Anti-clogging coal powder calorific value measuring device

Abstract

The utility model relates to coal quality analysis technical field discloses a kind of anti-blocking coal powder calorific value measuring device, including oxygen bomb tank, the oxygen bomb tank outside is uniformly connected with flange, the flange top side is fixedly connected with guide pipe, the oxygen bomb tank left and right sides are fixedly connected with adapter pipe, the adapter pipe right side is rotatably connected with shaft, the oxygen bomb tank bottom side is fixedly connected with sealing valve, the sealing valve right part top side is fixedly connected with motor frame, the motor frame top side is fixedly connected with motor, the motor drive end is fixedly connected in the shaft right side, the sealing valve left part top side is fixedly connected with air pump frame. In the utility model, the device is primarily filtered and sent to oxygen bomb tank, driven crushing knife and broken filter pipe realize double broken anti-blocking and send into combustion chamber, under the coordination of air pump etc. Full combustion is guaranteed, sensor collects data, and final controller calculates calorific value measuring process.

Description

Technical Field

[0001] This utility model relates to the field of coal quality analysis technology, and in particular to a coal powder calorific value measuring device that prevents clogging. Background Technology

[0002] Coal is a core energy source in industries such as power, chemical, and metallurgy. Its calorific value is a key indicator for measuring coal quality, calculating energy efficiency, and optimizing combustion processes. Accurate calorific value data directly determines the cost accounting of coal procurement, the setting of boiler combustion parameters, and the effectiveness of pollutant emission control.

[0003] The core of the traditional coal powder calorific value measurement device is the oxygen bomb calorimeter. Its working principle is based on the law of conservation of energy. It measures the heat released after the complete combustion of coal powder and transfers it to a medium with known mass and specific heat capacity. Then, it calculates the calorific value of the coal based on the temperature change of the medium.

[0004] However, existing traditional coal powder calorific value measuring devices, while capable of measuring the calorific value of coal powder, cannot integrate the addition of coal powder with oxygenation and depressurization during the measurement process, nor can they effectively prevent clogging caused by coal powder aggregation. Therefore, an anti-clogging coal powder calorific value measuring device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a coal powder calorific value measuring device that prevents clogging, aiming to improve the problems of difficulty in integrating oxygen filling and depressurization and coal powder agglomeration leading to clogging in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A coal powder calorific value measuring device with anti-clogging features includes an oxygen bomb canister. Flanges are fixedly connected to the outer sides of the oxygen bomb canister, and guide pipes are fixedly connected to the top of the flanges. Transfer pipes are fixedly connected to both the left and right sides of the oxygen bomb canister. A rotating shaft is rotatably connected to the right side of the transfer pipes. A sealing valve is fixedly connected to the bottom of the oxygen bomb canister. A motor frame is fixedly connected to the top right side of the sealing valve, and a motor is fixedly connected to the top of the motor frame. The motor drive end is fixedly connected to the right side of the rotating shaft. A pump frame is fixedly connected to the top left side of the sealing valve. A speed-changing ring is fixedly connected to the outer periphery of the rotating shaft. Multiple evenly distributed crushing blades are fixedly connected to the outer periphery of the middle part of the rotating shaft. A crushing and filtering pipe is rotatably connected to the inner side of the speed-changing ring.

[0008] As a further description of the above technical solution:

[0009] An air pump is fixedly connected to the left side of the left part of the transfer pipe, a flow meter is fixedly connected to the bottom side of the air pump, a pressure reducing valve is fixedly connected to the right side of the flow meter, the right side of the pressure reducing valve is fixedly connected to the left side of the oxygen bomb tank, and the bottom side of the flow meter is fixedly connected to the top side of the sealing valve.

[0010] As a further description of the above technical solution:

[0011] A combustion chamber is fixedly connected to the bottom side of the sealing valve, a base is fixedly connected to the bottom side of the combustion chamber, the top right side of the base is fixedly connected to the bottom side of the motor frame, and the top left side of the base is fixedly connected to the bottom side of the air pump frame.

[0012] As a further description of the above technical solution:

[0013] A detection tube is fixedly connected to the right side of the combustion chamber, and a controller is fixedly connected to the bottom side of the detection tube. A control key is installed on the outside of the controller.

[0014] As a further description of the above technical solution:

[0015] A storage tube is fixedly connected to the top side of the guide tube, and a sealing cap is slidably connected to the top side of the storage tube;

[0016] As a further description of the above technical solution:

[0017] A sliding plate is slidably connected to the inner side of the bottom of the storage tube, and a filter hole is fixedly connected to the inner side of the storage tube;

[0018] As a further description of the above technical solution:

[0019] The bottom side of the air pump is fixedly connected to the top side of the air pump frame;

[0020] As a further description of the above technical solution:

[0021] The outer side of the gearbox is fixedly connected to the inner side of the transfer tube, and the inner side of the oxygen bomb tank is fixedly connected to the crushing arm, with the inner side of the crushing arm abutting against the outer side of the crushing filter tube.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the rotating shaft structure driven by the motor drives the crushing blade and the speed change ring to work synchronously, and together with the crushing arm to squeeze the crushing filter tube, thereby achieving efficient crushing of coal lumps, avoiding the blockage of pipelines, and ensuring continuous operation of the device.

[0024] 2. In this utility model, the air pump structure fixed by the air pump frame drives the flow meter and pressure reducing valve to work together to accurately control the oxygen delivery volume. In conjunction with the sealing valve, heat loss is reduced, thereby achieving the effect of complete combustion of coal, improving the accuracy of calorific value measurement, and ensuring data reliability. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a coal powder calorific value measuring device for preventing clogging, as proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the crushed filter tube of the anti-clogging coal powder calorific value measuring device proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the filter hole structure of an anti-clogging coal powder calorific value measuring device proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the air pump structure of the anti-clogging coal powder calorific value measuring device proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the air pump frame of an anti-clogging coal powder calorific value measuring device proposed in this utility model.

[0030] Legend:

[0031] 1. Oxygen bomb canister; 2. Flange; 3. Transfer pipe; 4. Crusher blade; 5. Guide pipe; 6. Storage pipe; 7. Sealing cap; 8. Filter hole; 9. Sliding plate; 10. Motor; 11. Air pump; 12. Motor frame; 13. Base; 14. Air pump frame; 15. Sealing valve; 16. Controller; 17. Detection pipe; 18. Combustion chamber; 19. Shaft; 20. Flow meter; 21. Pressure reducing valve; 22. Control key; 23. Speed ​​changer; 24. Crusher arm; 25. Crusher filter pipe. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1-3This utility model provides an embodiment of a coal powder calorific value measuring device to prevent clogging, comprising an oxygen bomb tank 1. The oxygen bomb tank 1 is the core container and pretreatment vessel of the device, and is made entirely of high-temperature resistant and corrosion-resistant 304 stainless steel. It has a cylindrical structure to withstand the high pressure and high temperature environment generated inside, ensuring long-term stable operation. Flanges 2 are fixedly connected to the outside of the oxygen bomb tank 1. The flanges 2 serve as key interfaces for connecting the oxygen bomb tank 1 with other components. High-strength bolts are used to achieve a firm connection with other components, further enhancing the sealing of the connection points and preventing coal powder leakage. A guide pipe 5 is fixedly connected to the inner side of the oxygen bomb tank 1 and to the top side. The guide pipe 5 serves as a conveying channel for coal powder to enter the oxygen bomb tank 1 from the storage pipe 6. The inner wall is finely polished to reduce the frictional resistance between the coal powder and the pipe wall and prevent powder adhesion. Transfer pipes 3 are fixedly connected to both the left and right sides of the oxygen bomb tank 1. The transfer pipes 3 are divided into left and right groups. The left transfer pipe 3 is mainly used for gas transmission, and the right transfer pipe 3 is mainly used for power transmission. Both are made of stainless steel. A rotating shaft 19 is fixedly connected to the right side of the transfer pipe 3. The rotating shaft 19 is the core component for transmitting power from the motor 10. The bottom side of the oxygen bomb tank 1 is fixedly connected to... A sealing valve 15 is fixedly connected to the combustion chamber 18 and the oxygen bomb tank 1 to seal and separate them, preventing leakage during the experiment. A motor frame 12 is fixedly connected to the top right side of the sealing valve 15. The bottom side of the motor frame 12 is fixed to the base 13 with bolts to support the motor 10 and prevent the motor 10 from shifting during operation. The motor 10, which is the power source for the crushing part of the device, is fixedly connected to the top side of the motor frame 12. The drive end of the motor 10 is fixedly connected to the right side of the rotating shaft 19. An air pump frame 14 is fixedly connected to the top left side of the sealing valve 15. The bottom side of the air pump frame 14 is fixed to the base 13 with bolts. The shaft 19 is used to support the air pump 11 and prevent the air pump 11 from shifting during operation. The outer circumference of the shaft 19 is fixedly connected to the speed change ring 23. The speed change ring 23 has a built-in split rotating shaft, which is externally fixed to the inner side of the adapter pipe 3 and internally rotatably connected to an adjustable speed change rotating shaft. Multiple evenly distributed crushing blades 4 are fixedly connected to the outer circumference of the middle part of the shaft 19. The root of the blade is provided with an arc transition to reduce the accumulation of coal powder at the root and reduce the risk of blockage. The inner side of the speed change ring 23 is rotatably connected to the crushing filter pipe 25, which has a cylindrical tubular structure, spiral crushing ridges on the inner side, and densely distributed filter holes 8 on the pipe wall.

[0034] Reference Figures 3-5An air pump 11 is fixedly connected to the left side of the adapter pipe 3. The air pump 11 is an oil-free, silent air pump. An air filter is installed at the air inlet of the air pump 11. The filter uses high-efficiency filter material to filter dust and impurities in the air, preventing impurities from entering the air pump 11 and affecting its service life. A one-way valve is installed at the air outlet to prevent gas backflow and ensure stable gas delivery. A flow meter 20 is fixedly connected to the bottom side of the air pump 11. The bottom side of the flow meter 20 is fixedly connected to the top side of the sealing valve 15 by a bracket made of angle steel. The bracket is connected to the flow meter 20 and the sealing valve 15 by bolts to ensure that the flow meter 20 is in a horizontal state and to avoid affecting the measurement accuracy due to tilting. A pressure reducing valve 21 is fixedly connected to the right side of the flow meter 20. It is used to reduce the pressure of the device after the experimental measurement is completed. The right side of the pressure reducing valve 21 is fixedly connected to the left side of the oxygen bomb tank 1, and the bottom side of the flow meter 20 is fixedly connected to the top side of the sealing valve 15.

[0035] Reference Figures 1-5A combustion chamber 18 is fixedly connected to the bottom side of the sealing valve 15. The combustion chamber 18 is the core area for coal powder combustion and calorific value release. It is made of high-temperature resistant corundum or silicon carbide material, which can withstand high temperatures and ensure that the coal powder can burn completely. A base 13 is fixedly connected to the bottom side of the combustion chamber 18. The base 13 is made of welded steel plate to ensure stable support for all components of the device and effectively prevent the device from sliding during operation. The top right side of the base 13 is fixedly connected to the bottom side of the motor frame 12, and the top left side of the base 13 is fixedly connected to the bottom side of the air pump frame 14. A detection tube 17 is fixedly connected to the right side of the combustion chamber 18 and communicates with the combustion chamber 18 to ensure that the sensor can accurately collect combustion gas samples. The bottom of the detection tube 17 is fixedly connected to a controller 16, which is simple and easy to operate. It can display the operating status of the device, various parameter data, and calorific value measurement results in real time. A control key 22 is installed on the outside of the controller 16 for adjusting the parameters and modes of the controller 16. The top of the guide tube 5 is fixedly connected to a storage tube 6, which is a pre-storage and preliminary filtration component for coal powder. It is made of transparent high-temperature resistant quartz glass or high-strength engineering plastic, which allows the operator to intuitively observe the remaining amount of coal powder inside. The top of the storage tube 6 is slidably connected to a sealing cover 7. An air gap is set between the two layers of glass to keep the temperature warm and prevent the coal powder inside the storage tube 6 from getting damp. The connection between the edge of the observation window and the main body of the sealing cover 7 is sealed with sealant to ensure airtightness and prevent dust from entering the storage tube 6. The sliding plate 9 is slidably connected to the bottom inner side of the storage tube 6 to control the amount of coal powder falling into the crushing filter tube 25 through the filter holes 8. The filter holes 8 are fixedly connected to the inner side of the storage tube 6 and are evenly and densely distributed to improve filtration efficiency. When the filter holes 8 are severely clogged, they can be removed from the storage tube 6 for cleaning or replacement. The disassembly process is simple and convenient, requiring no professional tools and reducing maintenance costs. The bottom side of the air pump 11 is fixedly connected to the top side of the air pump frame 14. The outer side of the gearbox 23 is fixedly connected to the inner side of the adapter pipe 3. The crushing arm 24 is fixedly connected to the inner side of the oxygen bomb tank 1. The crushing arm 24 and the inner wall of the oxygen bomb tank 1 are welded together to further enhance the structural strength of the crushing arm 24 and prevent bending or breakage due to excessive force during crushing. The inner side of the crushing arm 24 abuts against the outer side of the crushing filter tube 25.

[0036] Working principle: Before starting the device, the coal powder to be tested is placed in the storage tube 6 and the sealing cover 7 is closed to prevent moisture or contamination. The operator can observe the remaining powder through the transparent tube wall. The coal powder falls under the action of gravity and is initially screened through the filter hole 8. Fine powder that meets the requirements continues to fall. The falling speed and flow rate of the powder can be adjusted by sliding the sliding plate 9 to achieve preliminary control of the feed amount. The powder then enters the guide tube 5, whose inner wall is polished to effectively reduce powder adhesion and frictional resistance, ensuring that the powder enters the oxygen bomb tank 1 smoothly. The oxygen bomb canister 1, as the core reaction vessel, provides a sealed, high-pressure, and high-temperature environment for the crushing, conveying, and subsequent combustion processes. Power is supplied by a motor 10, whose output shaft transmits power to the interior of the device via a rotating shaft 19. Multiple crushing blades 4 are mounted on the rotating shaft 19, which further crush and disperse the falling coal powder during rotation. The arc-shaped design at the base of the blades effectively prevents powder accumulation. Simultaneously, the rotating shaft 19 drives the internal crushing and filtering tube 25 to rotate via a speed-changing ring 23. The inner side of this tube has spiral crushing ribs, and the tube wall is densely covered with filter holes 8. During rotation, it cooperates with the crushing arms 24 fixed to the inner wall of the oxygen bomb canister 1 to shear, compress, and grind the flowing powder, ensuring extremely fine powder particles and effectively breaking up any clumps, greatly reducing the risk of clogging. The final processed ultrafine powder passes through the filter holes of the crushing and filtering tube 25, ready to enter the combustion stage.

[0037] The air pump 11 starts, purifies the outside air through its inlet air filter, and then pumps it into the oxygen bomb tank 1 through the adapter pipe 3. The airflow is monitored in real time by the flow meter 20 and adjusted to the required pressure and flow rate for the experiment by the pressure reducing valve 21, providing sufficient and controllable oxygen for the combustion of coal powder. After the processed ultrafine coal powder is fully mixed with oxygen, the bottom sealing valve 15 is opened, and the mixture enters the combustion chamber 18 under the action of gravity and airflow. The combustion chamber 18 is made of high-temperature resistant material to ensure that the coal powder is ignited and fully burned in it, releasing all heat energy. The gas generated by combustion is guided to the sensor integrated inside the controller 16 through the detection tube 17 for analysis. The controller 16 processes the sensor data in real time, calculates and displays the calorific value of the coal powder. The operator can set parameters, start and stop the device or view historical data through the control key 22 on the outside of the controller 16. After the experiment, the pressure reducing valve 21 is opened to safely release the pressure inside the device. The entire device is kept stable by the base 13. Each support, such as the motor frame 12 and the air pump frame 14, ensures that the power and airflow components such as the motor 10 and the air pump 11 are stable and do not shift during operation.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clogging-proof coal powder calorific value measuring device comprising an oxygen bomb can (1), characterized by: Flanges (2) are fixedly connected to the outer side of the oxygen bomb tank (1). A guide pipe (5) is fixedly connected to the top side of the flange (2). A transfer pipe (3) is fixedly connected to both the left and right sides of the oxygen bomb tank (1). A rotating shaft (19) is rotatably connected to the right side of the transfer pipe (3). A sealing valve (15) is fixedly connected to the bottom side of the oxygen bomb tank (1). A motor frame (12) is fixedly connected to the top right side of the sealing valve (15). A motor (10) is fixedly connected to the top side of the motor frame (12). The drive end of the motor (10) is fixedly connected to the right side of the rotating shaft (19). A gas pump frame (14) is fixedly connected to the top left side of the sealing valve (15). A speed change ring (23) is fixedly connected to the outer periphery of the rotating shaft (19). Multiple evenly distributed crushing blades (4) are fixedly connected to the outer periphery of the middle part of the rotating shaft (19). A crushing filter pipe (25) is rotatably connected to the inner side of the speed change ring (23).

2. A clog resistant coal powder heating value measurement device according to claim 1, wherein: An air pump (11) is fixedly connected to the left side of the transfer pipe (3). A flow meter (20) is fixedly connected to the bottom side of the air pump (11). A pressure reducing valve (21) is fixedly connected to the right side of the flow meter (20). The right side of the pressure reducing valve (21) is fixedly connected to the left side of the oxygen bomb canister (1). The bottom side of the flow meter (20) is fixedly connected to the top side of the sealing valve (15).

3. A clog resistant coal powder heating value measurement device according to claim 1, wherein: The sealing valve (15) is fixedly connected to the bottom of the combustion chamber (18), and the bottom of the combustion chamber (18) is fixedly connected to the base (13). The top right side of the base (13) is fixedly connected to the bottom of the motor frame (12), and the top left side of the base (13) is fixedly connected to the bottom of the air pump frame (14).

4. A non-clogging coal powder calorific value measuring device according to claim 3, characterized in that: A detection tube (17) is fixedly connected to the right side of the combustion chamber (18), and a controller (16) is fixedly connected to the bottom side of the detection tube (17). A control key (22) is installed on the outside of the controller (16).

5. A clog resistant coal powder heating value measurement device according to claim 1, wherein: The top side of the guide tube (5) is fixedly connected to the storage tube (6), and the top side of the storage tube (6) is slidably connected to the sealing cap (7).

6. A non-clogging coal powder calorific value measuring device according to claim 5, characterized in that: The storage tube (6) is slidably connected to the inner side of the bottom of the sliding plate (9), and the storage tube (6) is fixedly connected to the inner side of the filter hole (8).

7. A clog resistant coal powder heating value measurement device according to claim 2, wherein: The bottom side of the air pump (11) is fixedly connected to the top side of the air pump frame (14).

8. A clog resistant coal powder heating value measurement device according to claim 1, wherein: The outer side of the gearbox (23) is fixedly connected to the inner side of the transfer tube (3), and the inner side of the oxygen bomb tank (1) is fixedly connected to the crushing arm (24), and the inner side of the crushing arm (24) abuts against the outer side of the crushing filter tube (25).

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