Biomass gasification furnace space capsule feeding weighing system
Patent Information
- Application Number
- CN202521918525.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-09-05
AI Technical Summary
[0004]本实用新型的目的是提供一种生物质气化炉太空舱进料称重系统，以解决现有生物质气化系统中进料计量不准确等问题，结构简单，使用方便，有效保证生物质进料的准确性
[0016] This invention provides a biomass gasifier with a space capsule feeding and weighing system. The buffer chamber serves as a preliminary buffer for raw materials, preparing for subsequent precise metering. The space capsule enables temporary storage and metering of raw materials. Upper and lower gate valves, in conjunction with the control system, achieve precise delivery and isolation of materials in different areas, effectively preventing gas leakage and the entry of outside air. The weighing system acquires weight data in real time, providing accurate basis for feeding and metering, which helps to accurately control the amount of biomass fed, thereby optimizing the operating efficiency and stability of the gasifier.
Smart Images
Figure CN224728486U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of biomass gasification furnace technology, and in particular to a biomass gasification furnace space capsule feeding and weighing system. Background Technology
[0002] With the country's active promotion of green energy utilization, biomass, as a zero-carbon and renewable energy source, plays an important role in achieving the national 30 / 60 carbon reduction target. Biomass gasification technology can convert various biomass raw materials into combustible gases to meet end-user energy needs.
[0003] Existing biomass gasification systems typically consist of ground-mounted feeding hoppers, electric augers, conveyor belts, top-mounted feeding hoppers, and screw feeders. However, conventional feeding systems suffer from severe deficiencies in raw material metering. Their methods, such as weighing on the transport vehicle using ground scales, weighing from the ground-mounted feeding hoppers, or weighing via conveyor belts, are crude and discontinuous. Because the time interval between the weighing point and the biomass feed entering the gasifier is relatively long, it fails to reflect the real-time participation of the feed in the reaction, making accurate metering of the biomass feed difficult. Biomass feed data is crucial for measuring and analyzing the efficiency of the gasification system and even the entire thermal system. The lack of continuous metering data prevents real-time monitoring and analysis of the gasification system's operating efficiency, hindering dynamic control and optimized operation of the entire system. Utility Model Content
[0004] The purpose of this invention is to provide a biomass gasifier capsule feeding and weighing system to solve the problems of inaccurate feeding measurement in existing biomass gasification systems. It has a simple structure, is easy to use, and effectively ensures the accuracy of biomass feeding.
[0005] To achieve the above objectives, this utility model provides the following solution:
[0006] This utility model provides a biomass gasifier capsule feeding and weighing system, including: a buffer chamber, a capsule, an upper baffle valve, a lower baffle valve, a weighing system, and a control system. The upper part of the buffer chamber is provided with a feed inlet to receive biomass raw materials. The capsule is located below the buffer chamber and communicates with the buffer chamber to temporarily store the biomass raw materials to be measured. The bottom of the capsule is sealed and communicated with the raw material inlet of the gasifier. The upper baffle valve is located between the buffer chamber and the capsule to isolate and seal or connect the buffer chamber and the capsule. The lower baffle valve is located at the bottom of the capsule to isolate and seal or connect the capsule and the raw material inlet of the gasifier. The weighing system includes multiple weighing sensors, each of which is located on the gasifier and contacts the bottom of the capsule to support the capsule and can monitor the total weight of the buffer chamber, the capsule, and the biomass raw materials inside in real time. The control system is signal-connected to the upper baffle valve, the lower baffle valve, and the weighing system.
[0007] Preferably, it also includes a water seal mechanism, which is disposed between the space capsule and the gasifier raw material inlet to seal and connect the space capsule and the gasifier raw material inlet.
[0008] Preferably, the water seal mechanism includes a water seal ring groove, which is fixedly disposed on the outside of the raw material inlet of the gasifier. A water seal ring plate is disposed at the bottom of the space capsule. The water seal ring groove is filled with water, and the bottom end of the water seal ring plate is inserted into the water in the water seal ring groove to form the water seal mechanism.
[0009] Preferably, the weighing system further includes multiple support columns, which are installed in the water seal annular groove, with the top of the support column extending above the top surface of the water in the water seal annular groove, and one weighing sensor is installed on one of the support columns.
[0010] Preferably, the support columns are evenly arranged along the circumferential direction of the water seal annular groove.
[0011] Preferably, it also includes a level gauge, which is installed on the top of the space capsule and connected to the control system signal to detect whether the biomass raw materials in the space capsule have reached the preset upper limit position.
[0012] Preferably, the system further includes a ground-mounted feeding hopper, an electric auger, a conveyor belt, a furnace top hopper, and a screw feeder. The ground-mounted feeding hopper is installed on the ground to receive biomass feedstock transported by a material transport vehicle. The electric auger is located at the bottom of the ground-mounted feeding hopper to convey the biomass feedstock to the conveyor belt. The conveyor belt is used to convey the biomass feedstock to the furnace top hopper, which is fixedly connected to the top of the gasifier. The screw feeder is installed at the bottom of the furnace top hopper, and the output end of the screw feeder is connected to the feed inlet of the buffer chamber to convey the biomass feedstock to the buffer chamber. The electric auger, the conveyor belt, and the screw feeder are all signal-connected to the control system.
[0013] Preferably, the output end of the screw feeder extends into the feed inlet of the buffer chamber, and there is a gap between the upper and lower sides of the output end of the screw feeder and the feed inlet of the buffer chamber.
[0014] Preferably, the upper slide gate valve and the lower slide gate valve are one of a pneumatic slide gate valve, a hydraulic slide gate valve, and an electric slide gate valve.
[0015] The present invention achieves the following technical advantages over the prior art:
[0016] This invention provides a biomass gasifier with a space capsule feeding and weighing system. The buffer chamber serves as a preliminary buffer for raw materials, preparing for subsequent precise metering. The space capsule enables temporary storage and metering of raw materials. Upper and lower gate valves, in conjunction with the control system, achieve precise delivery and isolation of materials in different areas, effectively preventing gas leakage and the entry of outside air. The weighing system acquires weight data in real time, providing accurate basis for feeding and metering, which helps to accurately control the amount of biomass fed, thereby optimizing the operating efficiency and stability of the gasifier. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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.
[0018] Figure 1 A schematic diagram of the biomass gasification furnace space capsule feeding and weighing system provided by this utility model;
[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0020] Figure 3 for Figure 1 Enlarged view of point B in the middle;
[0021] In the diagram: 1. Buffer chamber; 2. Space capsule; 3. Upper slide gate valve; 4. Lower slide gate valve; 5. Weighing sensor; 6. Water seal ring groove; 7. Water seal ring plate; 8. Support column; 9. Level gauge; 10. Ground feeding hopper; 11. Electric auger; 12. Conveyor belt; 13. Furnace top hopper; 14. Screw feeder; 15. Gasifier; 16. Biomass raw material; 17. Spacing. Detailed Implementation
[0022] 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.
[0023] The purpose of this invention is to provide a biomass gasifier capsule feeding and weighing system to solve the problems of inaccurate feeding measurement in existing biomass gasification systems. It has a simple structure, is easy to use, and effectively ensures the accuracy of biomass feeding.
[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0025] This utility model provides a biomass gasification furnace space capsule feeding and weighing system, such as Figures 1-3As shown, the system includes: a buffer chamber 1, a space chamber 2, an upper baffle valve 3, a lower baffle valve 4, a weighing system, and a control system. The upper part of the buffer chamber 1 is provided with a feed inlet to receive biomass feedstock 16. The space chamber 2 is located below the buffer chamber 1 and is connected to the buffer chamber 1 to temporarily store the biomass feedstock 16 that needs to be measured. The bottom of the space chamber 2 is sealed and connected to the feedstock inlet of the gasifier 15. The upper baffle valve 3 is located between the buffer chamber 1 and the space chamber 2 to isolate and seal or connect the buffer chamber 1 and the space chamber 2. The lower baffle valve 4 is located at the bottom of the space chamber 2 to isolate and seal or connect the space chamber 2 and the feedstock inlet of the gasifier 15. The weighing system includes multiple weighing sensors 5. Each weighing sensor 5 is located on the gasifier 15 and is in contact with the bottom of the space chamber 2 to support the space chamber 2 and can monitor the total weight of the buffer chamber 1, the space chamber 2, and the biomass feedstock 16 inside in real time. The control system is connected to the upper baffle valve 3, the lower baffle valve 4, and the weighing system to form a complete biomass feed metering and control system. The buffer chamber 1 serves as a preliminary buffer for raw materials, preparing for subsequent precise metering; the space chamber 2 enables temporary storage and metering of raw materials; the upper and lower gate valves 4, in conjunction with the control system, enable precise delivery and isolation of materials in different areas, effectively preventing gas leakage and the entry of outside air; the weighing system acquires weight data in real time, providing accurate basis for feed metering, which helps to accurately control the amount of biomass fed, thereby optimizing the operating efficiency and stability of the gasifier 15.
[0026] In a preferred embodiment, the biomass gasifier capsule feeding and weighing system further includes a water seal mechanism. This water seal mechanism is positioned between the capsule 2 and the feed inlet of the gasifier 15 to ensure a sealed connection between them. The water seal mechanism further enhances the sealing performance between the capsule 2 and the feed inlet of the gasifier 15. In complex working environments, the water seal effectively prevents gas leakage within the gasifier 15 and the intrusion of outside air, improving the safety of the entire feeding device and ensuring stable and reliable operation. This sealing method significantly reduces potential risks, especially when handling hazardous or flammable gases.
[0027] In a preferred embodiment, the water seal mechanism includes a water seal annular groove 6, which is fixedly disposed on the outside of the raw material inlet of the gasifier 15. A water seal annular plate 7 is disposed at the bottom of the space capsule 2. The water seal annular groove 6 is filled with water, and the bottom end of the water seal annular plate 7 is inserted into the water in the water seal annular groove 6 to form a water seal mechanism. This specific structure of the water seal mechanism is simple and practical. The water seal annular groove 6 and the water seal annular plate 7, together with the use of water, form a good sealing barrier. During the operation of the device, it can effectively prevent gas leakage caused by tiny gaps. Moreover, the water seal has low maintenance costs and is easy to operate. As long as there is an appropriate amount of water in the water seal annular groove 6, the sealing effect can be maintained continuously, enhancing the practicality and economy of the device.
[0028] In a preferred embodiment, the weighing system further includes multiple support columns 8, which are installed in the water seal annular groove 6, with the top of the support column 8 extending above the top surface of the water in the water seal annular groove 6. A weighing sensor 5 is installed on one support column 8. The support column 8 provides a stable mounting base for the weighing sensor 5, ensuring the secure installation of the weighing sensor 5 and preventing the weighing accuracy from being affected by shaking or displacement. On the other hand, installing the support column 8 in the water seal annular groove 6 and having its top extend above the water surface ensures that the water seal effect is not affected, while also protecting the weighing sensor 5 from water immersion, extending its service life, ensuring the long-term stable operation of the weighing system, and further ensuring the accuracy of feed metering.
[0029] In a preferred embodiment, the support columns 8 are evenly distributed along the circumferential direction of the water seal annular groove 6. This even distribution of the support force on the bottom of the space capsule 2 helps maintain the stability of the space capsule 2, thereby ensuring that the weighing sensor 5 is subjected to uniform force, improving the accuracy and reliability of weighing. The evenly distributed support columns 8 also help reduce the risk of structural damage caused by uneven local force, enhancing the structural stability of the entire device.
[0030] In a preferred embodiment, the biomass gasifier capsule feeding and weighing system further includes a level gauge 9. The level gauge 9 is located on the top of the capsule 2 and is connected to the control system to detect whether the biomass raw material 16 inside the capsule 2 has reached a preset upper limit. The level gauge 9 enables the control system to monitor the storage status of the raw material inside the capsule 2 in real time. When the raw material reaches the preset upper limit, the level gauge 9 sends a signal to the control system, which can then promptly stop the feeding device to prevent overloading of the capsule 2, which could cause blockages or other malfunctions. This ensures the orderly progress of the feeding process and improves the reliability and safety of the device operation.
[0031] In a preferred embodiment, the biomass gasifier capsule feeding and weighing system further includes a ground-mounted hopper 10, an electric auger 11, a conveyor belt 12, a furnace top hopper 13, and a screw feeder 14. The ground-mounted hopper 10 is installed on the ground to receive biomass feedstock 16 transported by a transport vehicle. The electric auger 11 is located at the bottom of the ground-mounted hopper 10 to convey the biomass feedstock 16 to the conveyor belt 12. The conveyor belt 12 is used to convey the biomass feedstock 16 to the furnace top hopper 13. The furnace top hopper 13 is fixedly connected to the top of the gasifier 15. The screw feeder 14 is installed at the bottom of the furnace top hopper 13, and the output end of the screw feeder 14 is connected to the feed inlet of the buffer chamber 1 to convey the biomass feedstock 16 to the buffer chamber 1. The electric auger 11, the conveyor belt 12, and the screw feeder 14 are all connected to the control system signal. The complete configuration of these feeding pretreatment devices realizes a series of orderly operations from receiving the biomass feedstock 16 on the ground to conveying it to the buffer chamber 1. The interconnected signals of each piece of equipment with the control system enable automated control, significantly improving feeding efficiency and reducing manual operation costs. Simultaneously, the coordinated operation of each piece of equipment ensures the continuity and stability of raw material delivery, laying a solid foundation for subsequent precise metering and the stable operation of the gasifier 15.
[0032] In a preferred embodiment, the output end of the screw feeder 14 extends into the feed inlet of the buffer chamber 1, and there is a gap 17 between the upper and lower sides of the output end of the screw feeder 14 and the feed inlet of the buffer chamber 1. This installation method ensures that the biomass raw material 16 is smoothly conveyed from the screw feeder 14 to the buffer chamber 1, and avoids problems such as jamming and friction that may occur if the output end of the screw feeder 14 is tightly connected to the feed inlet of the buffer chamber 1. The gap 17 between the upper and lower sides provides space for the small vertical displacement caused by the weight change of the biomass raw material 16 in the buffer chamber 1 and the space capsule 2, and avoids contact with the screw feeder 14 to avoid affecting the accuracy of the weighing sensor 5.
[0033] In a preferred embodiment, the upper slide gate valve 3 and the lower slide gate valve 4 are one of a pneumatic slide gate valve, a hydraulic slide gate valve, or an electric slide gate valve. These three types of slide gate valves each have their own advantages. Whether it's the rapid response of the pneumatic slide gate valve, the high driving force of the hydraulic slide gate valve, or the precise control of the electric slide gate valve, all can provide reliable opening and closing control for the device. Users can select the appropriate slide gate valve type according to actual working needs and site conditions, which helps to meet the control requirements of the feeding device in different application scenarios, increasing the flexibility and applicability of the device.
[0034] The method of using the biomass gasification furnace capsule feeding and weighing system provided by this utility model
[0035] Initial raw material conveying stage
[0036] The biomass raw material 16 transported by the material truck is poured into the ground feeding hopper 10. The control system starts the electric auger 11, which conveys the biomass raw material 16 at the bottom of the ground feeding hopper 10 to the conveyor belt 12.
[0037] The conveyor belt 12 starts working, transporting the biomass raw material 16 to the furnace top hopper 13 fixed on the top of the gasifier 15.
[0038] Subsequently, the control system starts the screw feeder 14, and the biomass raw material 16 in the furnace top hopper 13 is transported to the buffer chamber 1 through the screw feeder 14. Since the output end of the screw feeder 14 extends into the feed inlet of the buffer chamber 1, and there is a gap 17 between the upper and lower sides of the output end and the feed inlet of the buffer chamber 1, the raw material can enter the buffer chamber 1 smoothly and stably.
[0039] Space Capsule 2 Feeding and Metering Stage
[0040] The buffer chamber 1 temporarily stores the biomass raw material 16 fed from the screw feeder 14. At this time, the upper gate valve 3 is closed and the lower gate valve 4 is also closed. The space capsule 2 is isolated and sealed from the buffer chamber 1 and the gasifier 15.
[0041] When the control system detects that the lower gate valve 4 is closed, it opens the upper gate valve 3 and continues to control the screw feeder 14 to work, so that the biomass raw material 16 in the buffer chamber 1 enters the space chamber 2.
[0042] Multiple weighing sensors 5 mounted on the gasifier 15 at the bottom of the capsule 2 monitor the total weight of the capsule 2 and its internal biomass feedstock 16 in real time. As the feeding process proceeds, the weight data is transmitted to the control system in real time.
[0043] A level gauge 9 installed on the top of the capsule 2 monitors the height of the biomass feedstock 16 inside the capsule 2 in real time. When the level gauge 9 detects that the biomass feedstock 16 has reached the preset upper limit position, it sends a signal to the control system. After receiving the signal, the control system closes the upper gate valve 3 and the screw feeder 14 to complete the feeding operation. At this time, the control system records the weight data W1 measured by the weighing sensor 5.
[0044] Feeding stage to gasifier 15
[0045] When the biomass feedstock 16 in the gasifier 15 decreases to a certain level (preset lower limit), the control system issues a command to open the lower gate valve 4. The biomass feedstock 16 in the capsule 2 enters the feedstock inlet of the gasifier 15 under the action of gravity.
[0046] After the materials inside capsule 2 are emptied, the control system closes the lower gate valve 4. At this time, the control system records the weight data W2 measured by the weighing sensor 5 again.
[0047] By calculating the difference between the two weight data points, ΔW = W1 - W2, the weight of the biomass feedstock 16 input from the spacecraft 2 to the gasifier 15 can be determined. Combined with the time interval 17 between the two openings of the lower gate valve 4, the biomass feed rate can also be calculated.
[0048] Equipment sealing and maintenance phase
[0049] Throughout the feeding process, the water seal mechanism plays a crucial sealing role. The water seal ring groove 6 located outside the raw material inlet of the gasifier 15 is filled with water, and the bottom end of the water seal ring plate 7 at the bottom of the space capsule 2 is inserted into the water. The water seal ring plate 7 and the water seal ring groove 6 form a water seal, effectively preventing gas leakage inside the gasifier 15 and the entry of outside air.
[0050] The support columns 8, installed in the water seal ring groove 6, are evenly distributed and their tops extend above the water surface, providing stable support for the load cell 5, ensuring its normal operation, and preventing it from being corroded by water. Regular inspection and maintenance of the device are necessary to ensure the normal operation of all valves, sensors, motors, and other components, and to maintain sufficient water in the water seal ring groove 6 to sustain the normal operation and functions of the device.
[0051] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A biomass gasification furnace capsule feeding and weighing system, characterized in that: include: A buffer chamber (1) is provided with a feed inlet at the top to receive biomass raw materials (16); Space capsule (2), the space capsule (2) is located below the buffer chamber (1) and communicates with the buffer chamber (1) to temporarily store biomass raw materials (16) that need to be measured, and the bottom of the space capsule (2) is sealed and communicated with the raw material inlet of the gasifier (15). Upper gate valve (3), the upper gate valve (3) is disposed between the buffer chamber (1) and the space capsule (2) to isolate and seal or connect the buffer chamber (1) and the space capsule (2); The lower gate valve (4) is located at the bottom of the space capsule (2) to isolate and seal or connect the space capsule (2) and the raw material inlet of the gasifier (15); A weighing system comprising multiple weighing sensors (5), each weighing sensor (5) being mounted on the gasifier (15) and in contact with the bottom of the space capsule (2) to support the space capsule (2) and capable of real-time monitoring of the total weight of the buffer chamber (1), the space capsule (2), and the biomass raw materials (16) inside; and The control system is connected to the upper gate valve (3), the lower gate valve (4) and the weighing system via signal connection.
2. The biomass gasification furnace capsule feeding and weighing system according to claim 1, characterized in that: It also includes a water seal mechanism, which is disposed between the space capsule (2) and the raw material inlet of the gasifier (15) to make the space capsule (2) and the raw material inlet of the gasifier (15) sealed and connected.
3. The biomass gasification furnace capsule feeding and weighing system according to claim 2, characterized in that: The water seal mechanism includes a water seal ring groove (6), which is fixedly installed on the outside of the raw material inlet of the gasifier (15). A water seal ring plate (7) is provided at the bottom of the space capsule (2). The water seal ring groove (6) is filled with water, and the bottom end of the water seal ring plate (7) is inserted into the water in the water seal ring groove (6) to form the water seal mechanism.
4. The biomass gasification furnace capsule feeding and weighing system according to claim 3, characterized in that: The weighing system also includes multiple support columns (8), which are installed in the water seal ring groove (6), and the top of the support column (8) is higher than the top surface of the water in the water seal ring groove (6). A weighing sensor (5) is installed on one of the support columns (8).
5. The biomass gasifier capsule feeding and weighing system according to claim 4, characterized in that: The support columns (8) are evenly arranged along the circumferential direction of the water seal annular groove (6).
6. The biomass gasifier capsule feeding and weighing system according to claim 5, characterized in that: It also includes a level gauge (9), which is located on the top of the space capsule (2) and connected to the control system signal to detect whether the biomass raw material (16) in the space capsule (2) has reached the preset upper limit position.
7. The biomass gasification furnace capsule feeding and weighing system according to claim 6, characterized in that: It also includes a ground-mounted feeding hopper (10), an electric auger (11), a conveyor belt (12), a furnace top hopper (13), and a screw feeder (14). The ground-mounted feeding hopper (10) is installed on the ground to receive biomass feedstock (16) transported by a material transport vehicle. The electric auger (11) is located at the bottom of the ground-mounted feeding hopper (10) to convey the biomass feedstock (16) to the conveyor belt (12). The conveyor belt (12) is used to transport the biomass feedstock (16) to the furnace top. The hopper (13) is fixedly connected to the top of the gasifier (15). The screw feeder (14) is installed at the bottom of the hopper (13), and the output end of the screw feeder (14) is connected to the feed inlet of the buffer chamber (1) to transport the biomass raw material (16) to the buffer chamber (1). The electric auger (11), the conveyor belt (12) and the screw feeder (14) are all connected to the control system.
8. The biomass gasification furnace capsule feeding and weighing system according to claim 7, characterized in that: The output end of the screw feeder (14) extends into the feed inlet of the buffer chamber (1), and there is a gap (17) between the upper and lower sides of the output end of the screw feeder (14) and the feed inlet of the buffer chamber (1).
9. The biomass gasification furnace capsule feeding and weighing system according to claim 1, characterized in that: The upper slide gate valve (3) and the lower slide gate valve (4) are one of the following: pneumatic slide gate valve, hydraulic slide gate valve, and electric slide gate valve.