Semi-recumbent full-automatic biomass pellet steam generator

Abstract

The utility model belongs to the technical field of biomass particle steam generator, especially relates to semi -reclining full -automatic biomass particle steam generator, including frame, the top of frame is installed with combustion bin, evaporative bin and preheating bin, the inside installation of combustion bin has feed pipe, the bottom fixed connection of feed pipe has connecting frame, one end of feed pipe penetrates connecting frame, both sides of connecting frame all install vertical water -cooling pipe, and vertical water -cooling pipe equidistance arrangement sets up, the bottom fixed connection of vertical water -cooling pipe has connecting pipe, and both ends of multiple vertical water -cooling pipes are connected with connecting pipe through connecting frame respectively. This semi -reclining full -automatic biomass particle steam generator, through vertical water -cooling pipe, can make full use of the heat generated by fuel combustion, and cooperate with the design of semi -reclining combustion chamber, so that the fuel can more fully react with air during combustion, improve the thermal efficiency, so as to reduce the energy consumption of fuel.

Description

Technical Field

[0001] This utility model relates to the technical field of biomass pellet steam generators, and in particular to a semi-horizontal fully automatic biomass pellet steam generator. Background Technology

[0002] A fully automatic biomass pellet steam generator is a device that uses biomass pellets as fuel to generate steam through combustion. It adopts an automatic control system that can automatically complete a series of operations such as fuel supply, ignition, combustion control, and steam output, thereby achieving complete automation control. It generally consists of a fuel supply system module, a combustion module, a lubrication and cooling module, a safety protection module, a control module, and auxiliary facilities.

[0003] Currently, fully automatic biomass pellet steam generators typically operate by feeding fuel through a fuel supply module. Once the fuel supply system provides sufficient fuel, the automatic control system automatically ignites, adjusts the fuel supply, combustion temperature, and airflow to achieve a highly efficient combustion process. The high-temperature flue gas generated from pellet combustion flows from the combustion bed through corrugated flue pipes to the flue cyclone separator and induced draft fan before entering the desulfurization and purification system. The combustion system then heats the high-temperature flue gas generated from biomass pellet combustion through the air guide chamber and fan, thus generating steam. However, in actual operation, heat is transferred away through the furnace wall during combustion, leading to incomplete combustion and increased fuel consumption. When a specific amount of steam is required, more fuel needs to be burned. Therefore, a semi-horizontal fully automatic biomass pellet steam generator is urgently needed to solve these problems. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide a semi-horizontal fully automatic biomass pellet steam generator to solve the current technical problem that the heat of the fuel is transferred out through the furnace wall, resulting in incomplete combustion of the fuel and thus increasing fuel consumption.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A semi-horizontal fully automatic biomass pellet steam generator includes a frame. A combustion chamber, an evaporation chamber, and a preheating chamber are installed on the top of the frame. The combustion chamber is located on the side away from the preheating chamber. The evaporation chamber is located between the combustion chamber and the preheating chamber. A feed pipe is installed inside the combustion chamber. A connecting frame is fixedly connected to the bottom of the feed pipe. One end of the feed pipe passes through the connecting frame. Vertical water-cooling pipes are installed on both sides of the connecting frame. The vertical water-cooling pipes are arranged at equal intervals. A connecting pipe is fixedly connected to the bottom of the vertical water-cooling pipes. The two ends of multiple sets of vertical water-cooling pipes are connected to the connecting frame and the connecting pipe respectively.

[0008] As an improved technical solution, an igniter mounting base and a blower mounting base are fixedly connected to one side of the combustion chamber, and the igniter mounting base is located at the bottom of the blower mounting base.

[0009] As an improved technical solution, the bottom of the combustion chamber is provided with an air inlet duct, the top of the air inlet duct is provided with a support plate, the inside of the support plate is provided with a conical groove, and a screen is fixedly connected inside the conical groove.

[0010] As an improved technical solution, the evaporation chamber is provided with a smoke chamber inside. The evaporation chamber and the combustion chamber are connected by a first flue. The top of the smoke chamber is provided with a vertical fire tube. The vertical fire tubes are arranged at equal intervals. The top of the vertical fire tubes is fixedly connected to a second mounting plate and a first mounting plate, respectively. The vertical fire tubes are fixed inside the evaporation chamber by the second mounting plate and the first mounting plate.

[0011] As an improved technical solution, the evaporation chamber has an internal cavity located at the top of the second mounting plate. A second flue is provided on one side of the cavity, and a ash-cleaning furnace door is provided at the top of the cavity. One end of the ash-cleaning furnace door extends to the top of the evaporation chamber. An outlet valve mounting seat and a safety valve mounting seat are fixedly connected to the top of the evaporation chamber. The ash-cleaning furnace door is located between the outlet valve mounting seat and the safety valve mounting seat, and the outlet valve mounting seat and the safety valve mounting seat are far apart from each other.

[0012] As an improved technical solution, a first dust removal port, a pressure gauge mounting base, and a drain pipe are fixedly connected to one side of the evaporation chamber. The first dust removal port is located at the bottom of the evaporation chamber, the pressure gauge mounting base is located at the top of the evaporation chamber, and the drain pipe is located on one side of the first dust removal port.

[0013] As an improved technical solution, the preheating chamber is internally fixedly connected with a first partition and a second partition. The preheating chamber and the evaporation chamber are connected through a second flue. The first partition and the second partition are far apart from each other and are staggered. A heat exchange tube is installed between the first partition and the second partition. The heat exchange tubes are arranged at equal intervals, and one end of the heat exchange tube extends to the outside of the preheating chamber.

[0014] As an improved technical solution, a chimney outlet is fixedly connected to one end of the preheating chamber away from the second flue, and a second ash removal port is fixedly connected to one side of the preheating chamber.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. This utility model can make full use of the heat generated by fuel combustion through vertical water-cooled pipes. Combined with the semi-horizontal combustion chamber design, the fuel can react more fully with the air during combustion, improving the thermal energy utilization efficiency and thus reducing fuel consumption.

[0017] 2. This utility model can increase the heat exchange area by using vertical fire tubes, which can form a grid-like structure inside the evaporation chamber, thereby increasing the contact area of ​​water. In the heat transfer process of high-temperature flue gas, the larger the contact area between water and flue gas, the more sufficient the heat exchange, and the higher the thermal efficiency, thus making the heat exchange between flue gas and water more complete. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of the semi-horizontal fully automatic biomass pellet steam generator of this utility model.

[0020] Figure 2 This is a schematic diagram of the rear structure of the semi-horizontal fully automatic biomass pellet steam generator of this utility model.

[0021] Figure 3 This is a schematic cross-sectional view of the overall structure of the semi-horizontal fully automatic biomass pellet steam generator of this utility model.

[0022] Figure 4 This is a cross-sectional view of the combustion chamber of the semi-horizontal fully automatic biomass pellet steam generator of this utility model.

[0023] Figure 5 This is a schematic diagram of the vertical water-cooling pipe and feed pipe of the semi-horizontal fully automatic biomass pellet steam generator of this utility model.

[0024] Figure 6 This is a schematic diagram of the vertical fire tube structure of the semi-horizontal fully automatic biomass pellet steam generator of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Frame; 2. Combustion Chamber; 21. Feed Pipe; 22. Connecting Frame; 23. Vertical Water-Cooling Pipe; 24. Connecting Pipe; 25. Igniter Mounting Base; 26. Air Inlet Duct; 27. Support Plate; 28. Screen; 29. ​​Blower Mounting Base; 3. Evaporation Chamber; 31. Smoke Chamber; 32. Vertical Fire Tube; 321. First Mounting Plate; 322. Second Mounting Plate; 33. Cavity; 34. Ash Removal Furnace Door; 35. Gas Outlet Valve Mounting Base; 36. Safety Valve Mounting Base; 37. First Ash Removal Port; 38. Sewage Pipe; 39. Pressure Gauge Mounting Base; 4. Preheating Chamber; 41. First Baffle Plate; 411. Second Baffle Plate; 42. Heat Exchanger Tube; 43. Chimney Outlet; 44. Second Ash Removal Port; 5. First Flue; 6. Second Flue. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0030] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] like Figures 1 to 6 As shown in the figure, this embodiment provides a semi-horizontal fully automatic biomass pellet steam generator. This semi-horizontal fully automatic biomass pellet steam generator includes a frame 1. A combustion chamber 2, an evaporation chamber 3, and a preheating chamber 4 are installed on the top of the frame 1. The combustion chamber 2 is located on the side away from the preheating chamber 4, and the evaporation chamber 3 is located between the combustion chamber 2 and the preheating chamber 4.

[0032] The combustion chamber 2 is equipped with a feed pipe 21. A connecting frame 22 is fixedly connected to the bottom of the feed pipe 21. One end of the feed pipe 21 passes through the connecting frame 22. Vertical water-cooling pipes 23 are installed on both sides of the connecting frame 22. The vertical water-cooling pipes 23 are arranged at equal intervals. A connecting pipe 24 is fixedly connected to the bottom of the vertical water-cooling pipes 23. The two ends of multiple sets of vertical water-cooling pipes 23 are connected to the connecting pipes 24 through the connecting frame 22. The top of the combustion chamber 2 is equipped with a feed cylinder and a controller. The feed cylinder is connected to the inside of the feed pipe 21 to facilitate fuel flow. At the same time, the end of the combustion chamber 2 away from the preheating chamber 4 is equipped with a third ash removal port and a furnace opening. In addition, the combustion chamber 2 is equipped with a combustion furnace. Vertical water-cooled pipes 23 are located on both sides of the combustion furnace to form water-cooled walls, which can make full use of the heat generated by fuel combustion. The high-temperature gas from fuel combustion flows through the vertical water-cooled pipes 23, and the water in the vertical water-cooled pipes 23 exchanges heat with the high-temperature gas. In this way, the heat of the fuel is fully utilized, and it can be burned more completely, thereby reducing fuel consumption. At the same time, the combustion chamber is designed as a semi-horizontal type, which has a larger combustion area and a smaller combustion chamber depth compared to the vertical design. This allows the fuel to react more fully with the air during combustion, improving the thermal energy utilization efficiency. The two work together to make the fuel used consume less energy when the same amount of steam needs to be produced.

[0033] An igniter mounting base 25 and a blower mounting base 29 are fixedly connected to one side of the combustion chamber 2. The igniter mounting base 25 is located at the bottom of the blower mounting base 29, which facilitates the installation of the igniter and the blower so that the combustion chamber 2 can have a high temperature.

[0034] The bottom of the combustion chamber 2 is provided with an air inlet duct 26, and the top of the air inlet duct 26 is provided with a support plate 27. The inside of the support plate 27 is provided with a conical groove, and a screen 28 is fixedly connected inside the conical groove. The support plate 27 can fix the connecting pipe 24. At the same time, the support plate 27 is also used to support fuel and combustion products, and can increase the contact area of ​​the combustion chamber and enhance mixing, making the gas composition more uniform. In addition, it can also increase the cooling area of ​​fuel and flue gas, thereby preventing high temperature phenomena on the surface of the combustion chamber and reducing NOx generation. The screen 28 can slow down the falling speed of fuel, increase the mixing of fuel and air, thereby achieving more complete and uniform combustion. At the same time, it can force the flue gas to flow, increase the heat exchange and mass transfer effect, and improve the thermal energy utilization rate. The conical groove can guide the fuel to the combustion zone, promote the complete combustion of fuel, and through the conical distribution, it can slow down the flue gas velocity, increase the contact area between flue gas and fuel, thereby improving the heat transfer efficiency.

[0035] The evaporation chamber 3 has a smoke chamber 31 inside. The evaporation chamber 3 is connected to the combustion chamber 2 through the first flue 5. The top of the smoke chamber 31 is provided with vertical fire tubes 32. The vertical fire tubes 32 are arranged at equal intervals. The top of the vertical fire tubes 32 is fixedly connected to the top of the first mounting plate 322 and the second mounting plate 321, respectively. The vertical fire tubes 32 are fixed inside the evaporation chamber 3 through the second mounting plate 322 and the first mounting plate 321. The smoke chamber 31 and the first flue 5 are connected to the inside of the combustion furnace to facilitate the movement of flue gas. The arrangement of the vertical fire tubes 32 can increase the heat exchange area. It can form a grid-like structure inside the evaporation chamber 3, thereby increasing the contact area of ​​water. In the heat transfer process of high-temperature flue gas, the larger the contact area between water and flue gas, the more complete the heat exchange and the higher the thermal efficiency. This allows for more complete heat exchange between flue gas and water.

[0036] The evaporation chamber 3 has an internal cavity 33, which is located on the top of the second mounting plate 322. A second flue 6 is provided on one side of the cavity 33.

[0037] The top of the cavity 33 is provided with a ash removal furnace door 34. One end of the ash removal furnace door 34 extends to the top of the evaporation chamber 3. The top of the evaporation chamber 3 is fixedly connected with an exhaust valve mounting seat 35 and a safety valve mounting seat 36. The ash removal furnace door 34 is located between the exhaust valve mounting seat 35 and the safety valve mounting seat 36, and the exhaust valve mounting seat 35 and the safety valve mounting seat 36 are far apart from each other.

[0038] A first dust removal port 37, a pressure gauge mounting base 39, and a drain pipe 38 are fixedly connected to one side of the evaporation chamber 3. The first dust removal port 37 is located at the bottom of the evaporation chamber 3, the pressure gauge mounting base 39 is located at the top of the evaporation chamber 3, and the drain pipe 38 is located on one side of the first dust removal port 37.

[0039] The preheating chamber 4 is internally fixedly connected with a first partition 41 and a second partition 411. The preheating chamber 4 is connected to the evaporation chamber 3 through a second flue 6. The first partition 41 and the second partition 411 are far apart from each other and are staggered. A heat exchange tube 42 is installed between the first partition 41 and the second partition 411. The heat exchange tubes 42 are arranged at equal intervals. One end of the heat exchange tube 42 extends to the outside of the preheating chamber 4. The heat exchange tubes 42 are connected in series. The staggered arrangement of the first partition 41 and the second partition 411 facilitates the passage of flue gas through each set of heat exchange tubes 42. The heat exchange tubes 42 can preheat the water source.

[0040] A chimney outlet 43 is fixedly connected to one end of the preheating chamber 4 away from the second flue 6. A second ash removal port 44 is fixedly connected to one side of the preheating chamber 4. A cyclone dust collector and an induced draft fan are connected to one end of the chimney outlet 43. The induced draft fan is used to extract the flue gas.

[0041] In use, fuel is transferred to the feed pipe 21 through the feed cylinder and moved into the combustion furnace. The igniter and blower are started to heat the inside of the combustion furnace and burn the fuel. During this process, the vertical water-cooled pipe 23 can make full use of the heat generated by the fuel combustion. The high-temperature gas from the fuel combustion flows through the vertical water-cooled pipe 23, and the water in the vertical water-cooled pipe 23 exchanges heat with the high-temperature gas, which can make the fuel burn more completely and reduce fuel consumption. At the same time, the combustion chamber is designed as a semi-horizontal type, which has a larger combustion area and a smaller combustion chamber depth compared to the vertical design. This allows the fuel to react more fully with the air during combustion, improving the thermal energy utilization efficiency. The two work together to reduce fuel consumption.

[0042] Subsequently, the flue gas drifts through the first flue 5 into the smoke chamber 31 and moves towards the vertical fire tube 32. The vertical fire tube 32 can increase the heat exchange area and can form a grid-like structure inside the evaporation chamber 3, thereby increasing the contact area of ​​water. During the heat transfer process of high-temperature flue gas, the larger the contact area between water and flue gas, the more complete the heat exchange and the higher the thermal efficiency, which in turn makes the heat exchange between flue gas and water more complete.

[0043] The flue gas drifts through the second flue 6 to one side of the first baffle 41, and then drifts towards the heat exchange tube 42 near the bottom of the first baffle 41. Finally, it drifts through the top of the second baffle 411 towards the chimney outlet 43, thus completing the overall operation.

[0044] In the above process, the flue gas is drawn out by the induced draft fan, which allows the flue gas to drift. At the same time, water can be heated through the heat exchange tube 42 and the vertical fire tube 32, and finally discharged through the ash removal furnace door 34 to generate steam.

[0045] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A semi-horizontal fully automatic biomass pellet steam generator, characterized in that: Includes a frame (1), on the top of which are mounted a combustion chamber (2), an evaporation chamber (3) and a preheating chamber (4), the combustion chamber (2) being located on the side away from the preheating chamber (4), and the evaporation chamber (3) being located between the combustion chamber (2) and the preheating chamber (4); The combustion chamber (2) is equipped with a feed pipe (21). The bottom of the feed pipe (21) is fixedly connected to a connecting frame (22). One end of the feed pipe (21) passes through the connecting frame (22). Vertical water-cooling pipes (23) are installed on both sides of the connecting frame (22). The vertical water-cooling pipes (23) are arranged at equal intervals. The bottom of the vertical water-cooling pipes (23) is fixedly connected to a connecting pipe (24). The two ends of multiple sets of vertical water-cooling pipes (23) are respectively connected to the connecting pipes (24) through the connecting frame (22).

2. The semi-horizontal fully automatic biomass pellet steam generator according to claim 1, characterized in that: An igniter mounting base (25) and a blower mounting base (29) are fixedly connected to one side of the combustion chamber (2), and the igniter mounting base (25) is located at the bottom of the blower mounting base (29).

3. The semi-horizontal fully automatic biomass pellet steam generator according to claim 2, characterized in that: The bottom of the combustion chamber (2) is provided with an air inlet duct (26), and the top of the air inlet duct (26) is provided with a support plate (27). The inside of the support plate (27) is provided with a conical groove, and a screen (28) is fixedly connected inside the conical groove.

4. The semi-horizontal fully automatic biomass pellet steam generator according to claim 3, characterized in that: The evaporation chamber (3) has a smoke chamber (31) inside. The evaporation chamber (3) and the combustion chamber (2) are connected by a first flue (5). The top of the smoke chamber (31) is provided with a vertical fire tube (32). The vertical fire tubes (32) are arranged at equal intervals. The top of the vertical fire tubes (32) is fixedly connected to a second mounting plate (322) and a first mounting plate (321). The vertical fire tubes (32) are fixed inside the evaporation chamber (3) by the second mounting plate (322) and the first mounting plate (321).

5. The semi-horizontal fully automatic biomass pellet steam generator according to claim 4, characterized in that: The evaporation chamber (3) has an internal cavity (33) located at the top of the second mounting plate (322), and a second flue (6) is provided on one side of the cavity (33). The top of the cavity (33) is provided with a ash removal furnace door (34), one end of which extends to the top of the evaporation chamber (3). The top of the evaporation chamber (3) is fixedly connected with an exhaust valve mounting seat (35) and a safety valve mounting seat (36). The ash removal furnace door (34) is located between the exhaust valve mounting seat (35) and the safety valve mounting seat (36), and the exhaust valve mounting seat (35) and the safety valve mounting seat (36) are far apart from each other.

6. The semi-horizontal fully automatic biomass pellet steam generator according to claim 5, characterized in that: The evaporation chamber (3) is fixedly connected to one side of a first cleaning port (37), a pressure gauge mounting base (39) and a drain pipe (38). The first cleaning port (37) is located at the bottom of the evaporation chamber (3), the pressure gauge mounting base (39) is located at the top of the evaporation chamber (3), and the drain pipe (38) is located on one side of the first cleaning port (37).

7. The semi-horizontal fully automatic biomass pellet steam generator according to claim 1, characterized in that: The preheating chamber (4) is internally fixedly connected with a first partition (41) and a second partition (411). The preheating chamber (4) and the evaporation chamber (3) are connected through a second flue (6). The first partition (41) and the second partition (411) are far apart from each other and are staggered. A heat exchange tube (42) is installed between the first partition (41) and the second partition (411). The heat exchange tubes (42) are arranged at equal intervals, and one end of the heat exchange tube (42) extends to the outside of the preheating chamber (4).

8. The semi-horizontal fully automatic biomass pellet steam generator according to claim 7, characterized in that: The preheating chamber (4) is fixedly connected to a chimney outlet (43) at one end away from the second flue (6), and a second ash removal port (44) is fixedly connected to one side of the preheating chamber (4).

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