Energy-saving steam boiler with double combustors

Abstract

The invention discloses an energy-saving type steam boiler with double combustors, and relates to the technical field of steam boilers, the energy-saving type steam boiler comprises a boiler, a boiler shell is fixedly arranged in the boiler, a plurality of refractory bricks are fixedly arranged on the inner wall of the boiler shell, the combustors are arranged on the two sides of the boiler, the outlet ends of the two combustors communicate with the boiler, and the outlet ends of the two combustors communicate with the boiler. And fixing plates are fixedly arranged at the two ends of the boiler. The gas stove has the advantages that the combustion stabilizing structure is automatically switched according to a single-combustion mode and a double-combustion mode, the load adjusting range is expanded, flames are evenly diffused, the gas supply amount and the flame form are accurately matched, and it is guaranteed that the flames are concentrated and stable in the low load state and heated evenly in the high load state; under mode switching, the attaching position of the refractory brick protection plate is synchronously adjusted, precise matching of protection following during mode switching is achieved, abrasion is remarkably reduced, the service life of refractory bricks is prolonged, and the shutdown maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of steam boiler technology, and in particular to an energy-saving steam boiler with dual burners. Background Technology

[0002] In industrial production and district heating, steam boilers, as core heat energy supply equipment, directly impact production continuity and overall operating costs due to their operational stability, heat exchange efficiency, and energy consumption levels. Traditional equipment generally faces multiple technical bottlenecks that severely restrict operational efficiency, stability, and service life: Firstly, single-burner boilers have a narrow load adjustment range, and under low-load conditions, they are prone to flame instability and insufficient fuel burnout, resulting in energy waste. Dual-burner boilers, lacking an effective coordination mechanism, are prone to flame misalignment, leading to severely uneven heating of the furnace, with frequent instances of overheating on one side and underheating on the other, affecting steam quality and exacerbating localized equipment wear. Secondly, refractory brick wear is a significant problem. In single-burning mode, the flame continuously and concentratedly scours one side of the furnace wall, causing a sudden increase in local temperature and accelerated wear of the refractory bricks, resulting in an average service life of only 1-2 years. Frequent shutdowns for replacement are necessary, increasing maintenance costs and posing a risk of production interruption.

[0003] Therefore, the present invention proposes an energy-saving steam boiler with dual burners to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the background art and to propose an energy-saving steam boiler with dual burners.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An energy-saving steam boiler with dual burners includes a boiler, a boiler shell fixedly installed inside the boiler, a plurality of refractory bricks fixedly installed on the inner wall of the boiler shell, burners installed on both sides of the boiler, the outlet ends of the two burners being connected to the boiler, fixing plates fixedly installed at both ends of the boiler, and combustion stabilization structures installed between the two fixing plates and the corresponding burners. The combustion stabilization structures switch between single-burning and dual-burning modes to maintain combustion stability and simultaneously address localized wear of the refractory bricks.

[0007] In the above-mentioned energy-saving steam boiler with dual burners, tube sheets are fixedly installed at both ends of the boiler shell, and multiple fire tubes are fixedly connected between the two tube sheets. Combustion chambers are formed between the boiler shell and both ends of the boiler, and ignition tubes are fixedly connected to both ends of the boiler.

[0008] In the above-mentioned energy-saving steam boiler with dual burners, the boiler is equipped with a water supply pump group, which pressurizes and delivers softened water into the boiler shell to replenish the water consumed by steam generation and maintain the normal water level in the boiler shell.

[0009] In the above-mentioned energy-saving steam boiler with dual burners, a sludge removal component is provided at the bottom of the boiler. The sludge removal component is used to remove slag from the inside of the boiler shell where impurities have accumulated over a long period of time.

[0010] In the above-mentioned energy-saving steam boiler with dual burners, the boiler is equipped with a valve group, which includes a safety valve, a shut-off valve, and a pressure gauge valve. The boiler is equipped with a pressure gauge, and the pressure gauge valve is connected to the pressure gauge to monitor the steam pressure inside the boiler. When the steam pressure inside the boiler exceeds the set value, the safety valve automatically opens to release pressure and ensure equipment safety.

[0011] In the above-mentioned energy-saving steam boiler with dual burners, a bottom frame is provided at the bottom of the boiler, and a controller is fixedly installed on the bottom frame. The controller controls the operation of the electronic structure related to the boiler.

[0012] In the above-mentioned energy-saving steam boiler with dual burners, both burners are fixedly connected to gas pipes, and one end of each gas pipe is fixedly connected to a burner delivery valve.

[0013] In the above-mentioned energy-saving steam boiler with dual burners, the combustion stabilization structure includes a motor fixedly mounted on a fixed plate, a second gear fixedly mounted on the drive end of the motor, the second gear being fixedly connected to the burner delivery valve, a toothed plate slidably mounted on the boiler and meshing with the second gear, a support frame fixedly mounted inside the boiler, a rotating shaft rotatably mounted on the support frame, a first gear fixedly mounted on the upper end of the rotating shaft and meshing with the toothed plate.

[0014] In the aforementioned energy-saving steam boiler with dual burners, two support rods are fixedly installed inside the boiler, and rotating rods are rotatably installed on both support rods. Two vertical shafts are rotatably installed at the ports of the burners, and guide plates are fixedly installed on both vertical shafts. One of the guide plates is fixedly connected to the two rotating rods. A gear three is fixedly installed on one of the vertical shafts. Torsion springs are installed at the ports of both vertical shafts and the burners. A gear four is fixedly installed on the other vertical shaft, and gear three meshes with gear four. Pulleys are fixedly installed on both the rotating shaft and one of the vertical shafts, and a track is rotatably installed between the two pulleys.

[0015] In the above-mentioned energy-saving steam boiler with dual burners, one end of each of the two rotating rods is fixedly equipped with a rope roller, a positioning ring is fixedly installed inside the boiler shell, a pull rope is wound around each of the two rope rollers, one end of each pull rope is fixedly installed on the corresponding rope roller, and the other end of each pull rope is fixedly installed with the positioning ring. Multiple springs are fixedly installed on one side of the positioning ring, and a refractory brick guard plate is provided between the multiple springs, and the refractory brick guard plate is slidably installed inside the boiler shell.

[0016] Compared with existing technologies, the advantages of this invention are as follows: This invention automatically switches between single-burning and dual-burning modes through a combustion stabilization structure, expands the load adjustment range, ensures uniform flame diffusion, and precisely matches the gas supply and flame shape, ensuring concentrated and stable flame at low loads and uniform heating at high loads; during mode switching, the fitting position of the refractory brick guard plate is adjusted synchronously, achieving precise adaptation of protection during mode switching, significantly reducing wear, extending the service life of refractory bricks, and reducing downtime maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an energy-saving steam boiler with dual burners proposed in this invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 In this invention Figure 2 Cross-sectional view of the structure along the AA direction;

[0020] Figure 4 In this invention Figure 3 Enlarged structural diagram of part a;

[0021] Figure 5 This is a schematic diagram of the tube sheet and toothed plate in this invention;

[0022] Figure 6 This is a schematic diagram of the structure of the guide plate and gear four in this invention.

[0023] In the diagram: 1. Boiler; 2. Burner; 3. Motor; 4. Mounting plate; 5. Controller; 6. Feed water pump set; 7. Sewage discharge assembly; 8. Combustion chamber; 9. Fire tube; 10. Boiler shell; 11. Tube sheet; 12. Spring; 13. Positioning ring; 14. Refractory brick guard plate; 15. Pull rope; 16. Rope roller; 17. Rotating rod; 18. Gear 1; 19. Support frame; 20. Burner delivery valve; 21. Gear 2; 22. Gear plate; 23. Track; 24. Gear 3; 25. Gear 4; 26. Guide plate; 27. Rotating shaft; 28. Support rod; 29. ​​Ignition tube. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] Reference Figures 1-5 An energy-saving steam boiler with dual burners includes a boiler 1, a water level gauge, and a boiler shell 10 fixedly installed inside the boiler 1. The boiler shell 10, as the core pressure-bearing component of the boiler 1, is integrally formed from high-strength steel plate, possessing excellent pressure resistance and sealing performance. It can safely accommodate high-temperature, high-pressure boiler water and steam, providing a stable space for heat exchange. Tube sheets 11 are fixedly installed at both ends of the boiler shell 10, and multiple fire tubes 9 are fixedly connected between the two tube sheets 11. Combustion chambers 8 are formed between the boiler shell 10 and both ends of the boiler 1. The tube sheets 11 are made of thick-walled alloy steel plate and are welded and fixed to the boiler shell 10 to form a sealed heat exchange cavity. Their core function is to fix the fire tubes 9 and separate the combustion chamber 8 from the boiler water area, ensuring that high-temperature flue gas flows orderly within the fire tubes 9 and preventing flue gas leakage from affecting heat exchange efficiency. Multiple fire tubes 9 are made of seamless steel pipes and are treated with anti-corrosion. The tubes are densely arranged and sealed with the tube sheet 11 to form a highly efficient convective heat exchange surface. When the high-temperature flue gas passes through the fire tubes 9 at high speed, the heat is quickly transferred to the boiler water outside the tubes through the tube wall. The dense layout of the fire tubes 9 greatly increases the heat exchange area. The combustion chamber 8 provides sufficient combustion space for the flame of the dual burners 2. The inner wall of the combustion chamber 8 is lined with refractory bricks, which can reduce heat reflection loss and form a stable combustion atmosphere to promote complete combustion of fuel.

[0026] Both ends of boiler 1 are fixedly connected to ignition tubes 29. Ignition tubes 29 are made of high-temperature resistant quartz tubes and can be equipped with electric spark igniters. Their installation position is directly opposite the nozzle of burner 2, which can accurately ignite the gas-air mixture. Ignition tubes 29 are sealed to prevent flue gas leakage and ensure the safety and reliability of the ignition process. Boiler 1 is equipped with a feedwater pump group 6, which consists of two vertical centrifugal pumps in a "one-in-use, one-out-of-use" configuration. The main pump and the standby pump can be automatically switched by controller 5 to ensure uninterrupted operation of the feedwater system. Its core function is to pressurize softened water (output pressure ≥ 0.8 MPa) and deliver it into the boiler shell 10 to replenish the water consumed by steam generation, maintain the normal water level in the boiler shell 10, and prevent the boiler shell 10 from being damaged by dry burning due to water shortage. At the same time, it provides a sufficient water source for continuous steam production.

[0027] Boiler 1 is equipped with a blowdown assembly 7 at the bottom. The blowdown assembly 7 is used to remove impurities that have accumulated inside the boiler shell 10 over a long period of time. The blowdown assembly 7 consists of a blowdown valve, a blowdown pipe, and a sludge chamber. The sludge chamber is fixedly connected to the bottom side of boiler 1. The blowdown pipe and the sludge chamber are interconnected. The blowdown valve is a wear-resistant gate valve, which is flexible in opening and closing and has good sealing performance. Its core function is to periodically remove scale, rust, and other impurities that have accumulated inside the boiler shell 10 over a long period of time, to prevent impurities from adhering to the walls of the fire tubes 9 and affecting the heat exchange efficiency, to avoid corrosion and scaling problems caused by the deterioration of boiler water quality, and to ensure the long-term efficient operation of boiler 1. During blowdown, the sludge chamber can temporarily store impurities, which is convenient for centralized cleaning and reduces water loss during the blowdown process.

[0028] Boiler 1 is equipped with a valve assembly, including a safety valve, a shut-off valve, and a pressure gauge valve. A pressure gauge is connected to the pressure gauge valve to monitor the steam pressure inside the boiler. The safety valve uses a spring-loaded structure with a precise opening pressure setting (deviation ≤ ±0.05MPa). When the steam pressure inside boiler 1 exceeds the set safety value, the safety valve automatically opens to quickly release pressure, preventing damage to the boiler shell 10 due to overpressure. It is a core safety component of boiler 1. The shut-off valve is used for manual control of the steam and water supply. The valve stem uses a trapezoidal thread design, resulting in low opening torque and reliable sealing, facilitating flow adjustment or shutdown maintenance by operators according to operational needs. The pressure gauge valve is connected to the pressure gauge to buffer pressure surges, preventing damage to the pressure gauge due to instantaneous pressure fluctuations and extending its service life. When the water level falls below the minimum safety threshold, the water level gauge can promptly alert the operator or trigger the controller 5 to cut off the gas supply to burner 2 and start replenishing water to the boiler shell 10, preventing damage to the boiler shell 10 and fire tubes 9 due to overheating caused by water shortage. Boiler 1 has a bottom frame, on which a controller 5 is fixedly installed. The controller 5 controls the operation of the electronic structure related to boiler 1. The controller 5 integrates a PLC control module and a touch operation panel, and has data acquisition, logic judgment, automatic control and fault alarm functions. It can centrally control the start and stop of burner 2, the switching of feedwater pump group 6, and the timed sewage discharge of sewage discharge component 7, etc., reducing manual intervention and improving the automation and stability of boiler 1 operation.

[0029] Multiple refractory bricks are fixedly installed on the inner wall of the boiler shell 10. These refractory bricks are made of high-alumina refractory material, which has strong high-temperature resistance (long-term temperature resistance ≥1200℃). They can effectively prevent the high temperature of the furnace from being directly conducted to the outer wall of the boiler shell 10, reducing heat loss, and at the same time protecting the boiler shell 10 from direct flame erosion, thus extending its service life. Burners 2 are installed on both sides of the boiler 1, and the outlet ends of both burners 2 are connected to the boiler 1. The two burners 2 are symmetrically arranged. This symmetrical design allows the flame to form a balanced opposing mixing flow in the combustion chamber 8, promoting combustion. The burner 2 has a built-in combustion-supporting fan and gas injection device, which can precisely control the mixing ratio of gas and air (air-fuel ratio suitable range 10:1-15:1), ensuring complete combustion of fuel and reducing harmful gas emissions. Both ends of the boiler 1 are fixedly equipped with fixing plates 4, and combustion stabilization structures are installed between the two fixing plates 4 and the corresponding burners 2. These structures switch between single-burning and dual-burning modes to solve the problem of overheating on one side and underheating on the other side due to flame offset, ensuring the stability of the burner 2 during combustion and preventing localized wear of the refractory bricks. Both burners 2 are fixedly connected to gas pipes, and one end of each gas pipe is fixedly connected to a burner delivery valve 20. The gas pipes fixedly connected to both burners 2 are made of seamless steel pipes with anti-corrosion treatment, ensuring safe gas delivery. The burner delivery valves 20, fixedly connected to the gas pipes, have a V-shaped valve orifice with a flow regulation accuracy of ±3%, allowing precise control of the gas supply. Simultaneously, they are linked with the combustion stabilization structure to achieve synchronous adjustment of the gas flow and the angle of the guide plate 26.

[0030] When the pressure gauge detects that the steam pressure inside boiler 1 exceeds the set value (e.g., rated pressure 1.2MPa, 10% overpressure triggers protection), the safety valve automatically opens to release pressure (pressure release rate reaches 1.5m³ / min). At the same time, the controller 5 triggers an audible and visual alarm and cuts off the gas supply to burner 2 until the pressure inside the boiler returns to the normal range, preventing damage to the boiler shell 10 due to overpressure. When the water level gauge detects that there is a lack of water inside the boiler shell 10 (the water level is lower than the minimum safe water level), the controller 5 immediately cuts off the gas supply to burner 2, stops the combustion process, starts the water supply pump group 6 to replenish water, and issues a continuous alarm signal to remind the operator to check the cause of the water shortage and prevent damage to the boiler shell 10 or the fire tube 9 due to dry burning.

[0031] The combustion stabilization structure includes a motor 3 fixedly mounted on a fixed plate 4. Motor 3 is a servo motor, characterized by precise speed control and rapid response (start-up response time ≤ 0.5 seconds), providing a stable power source for the entire linkage system. It can achieve stepless speed regulation via a controller 5, adapting to different load requirements. A gear 21 is fixedly mounted on the drive end of motor 3, and is fixedly connected to the burner delivery valve 20. A toothed plate 22 is slidably mounted on boiler 1, meshing with gear 21. The tooth surface of gear 21 is carburized and quenched, ensuring a precise transmission ratio (1:1 meshing) and eliminating the risk of tooth slippage. One end of gear 21 is fixedly connected to the burner delivery valve 20, directly driving valve opening adjustment, while the other end meshes with the toothed plate 22, achieving power distribution.

[0032] A support frame 19 is fixedly installed inside the boiler 1. A rotating shaft 27 is rotatably mounted on the support frame 19. A gear 18 is fixedly mounted on the upper end of the rotating shaft 27, and the gear 18 meshes with a gear plate 22. Two support rods 28 are fixedly installed inside the boiler 1, and rotating rods 17 are rotatably mounted on each of the two support rods 28. Two vertical shafts are rotatably mounted at the port of the burner 2, and guide plates 26 are fixedly mounted on each of the two vertical shafts. When the guide plates 26 rotate outward, they can guide the flame diffusion; when they rotate inward, they can concentrate the flame or form a barrier. One of the guide plates 26 is fixedly connected to the two rotating rods 17. One end of the rotating rod 17 is fixedly connected to the guide plate 26, and the other end is linked to the rope roller 16, which can convert the rotational motion of the guide plate 26. The winding action of the rope roller 16 enables simultaneous triggering of flame adjustment and guard plate operation. A gear 3 24 is fixedly installed on one of the vertical shafts, and torsion springs are installed at the ports of the burner 2 on both vertical shafts. A gear 4 25 is fixedly installed on the other vertical shaft, and gears 3 24 and 4 25 mesh with each other. A pulley is fixedly installed on the rotating shaft 27 and one of the vertical shafts. The pulleys are made of metal. A track 23 is installed between the two pulleys to rotate together. The track 23 is made of high-temperature resistant rubber. In combination with the metal pulleys, compared with traditional chain drive, the operating noise is low and no frequent lubrication is required. It is suitable for the high-temperature environment around the furnace (operating temperature ≤800℃), can stably transmit rotational power, and avoids transmission failure at high temperatures.

[0033] One end of each of the two rotating rods 17 is fixedly equipped with a rope roller 16, and a positioning ring 13 is fixedly installed inside the pot shell 10. Pull ropes 15 are wound around the two rope rollers 16. One end of each pull rope 15 is fixedly installed on the corresponding rope roller 16, and the other end of each pull rope 15 is fixedly installed to the positioning ring 13. Multiple springs 12 are fixedly installed on one side of the positioning ring 13. A refractory brick guard plate 14 is provided between the multiple springs 12, and the refractory brick guard plate 14 is slidably installed inside the pot shell 10.

[0034] When switching from high load to low load, the steam pressure remains higher than the high load threshold. Controller 5 initiates the switching program, first gradually reducing the gas supply to the non-working burner 2, then controlling the motor 3 on that side to complete the forward micro-rotation to disengage and reverse rotation to close the valve. The guide plate 26 rotates slowly inward at a rate of 1° / second to avoid sudden flame changes. At the same time, the refractory brick guard plate 14 moves slowly to ensure uninterrupted protection during the switching process, and the entire transition process is smooth and shock-free.

[0035] When switching from low load to high load, the steam pressure remains below the low load threshold. Controller 5 issues a switching command, and the non-working side motor 3 starts running in the forward direction. First, the burner delivery valve 20 is opened to a small opening to supply gas, and the ignition tube 29 ignites and activates the burner 2 on that side. Then, the motor 3 drives the guide plate 26 to rotate outward at a rate of 1° / second to a 30° angle. Finally, the gas supply is gradually increased to the dual-burning load level, achieving a smooth transition from single-burning to dual-burning and avoiding pressure fluctuations and the risk of flameout.

[0036] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0037] The specific operation steps of this invention are as follows:

[0038] Preparations before startup: Check whether the water level inside the boiler shell 10 is within the normal range, whether the drain valve is closed, whether the gas pipeline is sealed properly, and whether the various parameters (pressure, water level threshold) of the controller 5 are set correctly.

[0039] Ignition operation: The burner 2 is started by the controller 5, and the igniter in the ignition tube 29 ignites the gas and air mixture. The combustion stabilization structure automatically switches to dual-burning or single-burning mode (according to the initial load requirements).

[0040] When the controller 5 detects that the steam pressure inside the boiler is lower than the set value (high steam demand), it determines that it is a high load and starts the command for both burners 2 to run simultaneously. The drive ends of the motors 3 on both sides run synchronously in the forward direction, outputting stable rotational power to drive the gear 21 to rotate in the forward direction. The gear 21 is rigidly connected to the burner delivery valve 20. As the gear 21 rotates, it opens the valve port synchronously, increasing the gas supply to a flow rate suitable for the high load. As gear 21 rotates, it drives gear plate 22 to slide. Gear plate 22's sliding motion drives gear 18, which meshes with it, to rotate. Gear 18's rotation drives the corresponding vertical shaft to rotate via shaft 27 and track 23. This vertical shaft's rotation drives gear 324 to rotate, which in turn drives gear 425 to rotate. At this time, the angle between the two guide plates 26 increases, making the flame and flue gas distribution of burner 2 more uniform. Simultaneously, the two rotating rods 17 rotate, driving the corresponding rope rollers 16 to rotate. The rope rollers 16 rotate and wind the pull rope 15, which in turn pulls the refractory brick guard plate 14 closer to the positioning ring 13. This allows for adaptive movement based on the high temperature of the flame, forming a double protection by fitting the internal refractory bricks. This reduces the local temperature of the refractory bricks by 150-200℃, significantly reducing local wear and preventing excessive uneven heat inside the pot shell 10, which could cause local damage to the pot shell 10.

[0041] When controller 5 detects that the steam pressure inside the boiler is higher than the set value (low steam demand), it determines it as a low load and initiates the operation of one of the burners 2. The drive end of motor 3 continues to rotate forward for 0.1 seconds and then reverses direction. (During this 0.1-second forward rotation, motor 3 drives gear 21 to disengage from the teeth on gear plate 22. At this time, the rotating shaft 27 is no longer subjected to the meshing force of gear plate 22, and the vertical shaft is no longer subjected to the resisting force generated by the meshing. Under the action of the torsion spring, it drives the two guide plates 26 to rotate in the opposite direction, returning to the initial parallel state.) Figure 6 At this time, the rope roller 16 also returns to its initial state, outputting stable rotational power. After rotating forward for 0.1 seconds, the drive end of the motor 3 drives the gear 21 to continue rotating in the reverse direction. The gear 21 is rigidly connected to the burner delivery valve 20. As the gear 21 rotates, the valve port is closed synchronously, reducing the gas supply to a flow rate suitable for low load. As gear 21 rotates, it drives gear plate 22 to slide. The sliding of gear plate 22 drives gear 18, which meshes with it, to rotate. The rotation of gear 18 drives the corresponding vertical shaft to rotate through shaft 27 and track 23. The rotation of the vertical shaft drives gear 3 24 to rotate. The rotation of gear 3 24 drives gear 4 25 to rotate. At this time, the angle between the two guide plates 26 becomes smaller and the angle between the guide plates 26 becomes concentrated, maintaining combustion stability. At the same time, the two rotating rods 17 rotate, and the rotation of the two rotating rods 17 drives the corresponding rope rollers 16 to rotate. The rotation of the rope rollers 16 releases part of the pull rope 15. At this time, under the action of spring 12, the refractory brick guard plate 14 moves away from the positioning ring 13 (when the two guide plates 26 are parallel, the spring 12 is in a compressed state).

[0042] When only one burner 2 is running, the non-working gear 21 on the other side rotates in the opposite direction, causing the burner delivery valve 20 to close synchronously, completely cutting off the gas supply to the non-working side and avoiding fuel waste and the risk of gas leakage. At this time, the non-working motor 3 on the other side rotates in the opposite direction, driving the vertical shaft to rotate in the opposite direction through the toothed plate 22, gear set and track 23. The torsion spring assists in the reset, causing the two guide plates 26 to rotate inward synchronously to a 15° angle, forming a flow barrier, effectively preventing the flame on the working side from shifting to the empty side, and controlling the flame shift to ≤10mm; the guide plate 26 on the working side maintains a 30° angle to ensure that the flame diffuses stably to the center area of ​​the furnace.

[0043] Load regulation: The controller 5 automatically adjusts the gas supply of the burner 2 according to the change of steam pressure, and synchronously adjusts the angle of the guide vane 26 to maintain stable combustion and uniform heat exchange.

[0044] Water supply and sewage discharge: Water supply pump group 6 automatically replenishes water according to the water level gauge signal, and sewage discharge component 7 discharges sewage at set intervals to ensure the quality and stability of boiler water.

[0045] Shutdown procedure: Turn off burner 2 via controller 5. After the pressure inside the boiler drops to a safe range, close the gas pipeline valve. If necessary, start the drain assembly 7 to drain the remaining water inside the boiler.

Claims

1. An energy-saving steam boiler with dual burners, comprising a boiler (1), characterized in that, The boiler (1) is fixedly provided with a boiler shell (10), and multiple refractory bricks are fixedly provided on the inner wall of the boiler shell (10). Burners (2) are provided on both sides of the boiler (1), and the outlet ends of the two burners (2) are connected to the boiler (1). Fixed plates (4) are fixedly provided at both ends of the boiler (1). Combustion stabilization structures are provided between the two fixed plates (4) and the corresponding burners (2). The combustion stabilization structures switch between single-burning and double-burning modes to maintain combustion stability and simultaneously solve the problem of local wear of refractory bricks.

2. The energy-saving steam boiler with dual burners according to claim 1, characterized in that, Both ends of the pot shell (10) are fixedly provided with tube plates (11), and multiple fire tubes (9) are fixedly connected between the two tube plates (11). Combustion chambers (8) are formed between the two ends of the pot shell (10) and the boiler (1), and ignition tubes (29) are fixedly connected to both ends of the boiler (1).

3. An energy-saving steam boiler with dual burners according to claim 1, characterized in that, The boiler (1) is equipped with a water supply pump group (6), which pressurizes and delivers softened water to the boiler shell (10) to replenish the water consumed by steam generation and maintain the normal water level in the boiler shell (10).

4. An energy-saving steam boiler with dual burners according to claim 1, characterized in that, The boiler (1) is equipped with a sewage discharge component (7) at the bottom. The sewage discharge component (7) is used to discharge the impurities that have been deposited inside the boiler shell (10) for a long time.

5. An energy-saving steam boiler with dual burners according to claim 1, characterized in that, The boiler (1) is equipped with a valve group, which includes a safety valve, a shut-off valve and a pressure gauge valve. The boiler (1) is equipped with a pressure gauge, and the pressure gauge valve is connected to the pressure gauge to monitor the steam pressure inside the boiler. When the steam pressure inside the boiler (1) exceeds the set value, the safety valve automatically opens to release pressure and ensure equipment safety.

6. An energy-saving steam boiler with dual burners according to claim 1, characterized in that, The boiler (1) has a bottom frame at the bottom, and a controller (5) is fixedly installed on the bottom frame. The controller (5) controls the operation of the electronic structure related to the boiler (1).

7. An energy-saving steam boiler with dual burners according to claim 1, characterized in that, Both burners (2) are fixedly connected to a gas pipe, and one end of each gas pipe is fixedly connected to a burner delivery valve (20).

8. An energy-saving steam boiler with dual burners according to claim 7, characterized in that, The combustion stabilization structure includes a motor (3) fixedly mounted on a fixed plate (4), a gear two (21) fixedly mounted on the drive end of the motor (3), the gear two (21) being fixedly connected to the burner delivery valve (20), a toothed plate (22) being slidably mounted on the boiler (1), and the toothed plate (22) meshing with the gear two (21), a support frame (19) being fixedly mounted inside the boiler (1), a rotating shaft (27) being rotatably mounted on the support frame (19), a gear one (18) being fixedly mounted on the upper end of the rotating shaft (27), and the gear one (18) meshing with the toothed plate (22).

9. An energy-saving steam boiler with dual burners according to claim 8, characterized in that, Two support rods (28) are fixedly installed inside the boiler (1). Rotating rods (17) are rotatably installed on both support rods (28). Two vertical shafts are rotatably installed at the port of the burner (2). Guide plates (26) are fixedly installed on both vertical shafts. One of the guide plates (26) is fixedly connected to the two rotating rods (17). Gear three (24) is fixedly installed on one of the vertical shafts. Torsion springs are installed at the port of the burner (2) on both vertical shafts. Gear four (25) is fixedly installed on the other vertical shaft. Gear three (24) meshes with gear four (25). Pulleys are fixedly installed on both the rotating shaft (27) and one of the vertical shafts. Tracks (23) are rotatably installed between the two pulleys.

10. An energy-saving steam boiler with dual burners according to claim 9, characterized in that, One end of each of the two rotating rods (17) is fixedly provided with a rope roller (16), and a positioning ring (13) is fixedly provided inside the pot shell (10). Pull ropes (15) are wound around the two rope rollers (16). One end of the two pull ropes (15) is fixedly provided on the corresponding rope rollers (16), and the other end of the two pull ropes (15) is fixedly provided with the positioning ring (13). Multiple springs (12) are fixedly provided on one side of the positioning ring (13). A refractory brick guard plate (14) is provided between the multiple springs (12), and the refractory brick guard plate (14) is slidably provided inside the pot shell (10).

Images