A biomass fuel calorific value analyzer

Abstract

This utility model relates to the field of detection technology, specifically to a biomass fuel calorific value detector. It includes a detector body, the internal cavity of which is equipped with a limiting component for supporting a metal container, ensuring the metal container remains within a certain area during testing. An auxiliary limiting component is provided on the inner wall of the detector body, cooperating with the limiting component to apply a vertically downward force to the metal combustion container. The limiting component forms a basic area restriction on the metal container, and the combined vertically downward force applied by the auxiliary limiting component effectively prevents the metal container from shifting or moving arbitrarily due to imbalance of gravity and buoyancy. This eliminates the risk of collision or obstruction between the stirring component and the metal container, ensuring the continuity and stability of the stirring process. The auxiliary limiting component forces the metal container to be completely submerged in water, ensuring full contact between the water and the container surface.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, specifically to a biomass fuel calorific value detector. Background Technology

[0002] Biomass fuel, as a renewable energy source, mainly comes from biomass materials such as crop straw, forestry waste, and livestock manure. It has the characteristics of low carbon emissions, abundant resources, and renewability. Against the backdrop of increasingly urgent needs for energy structure transformation and environmental protection, its application scope is constantly expanding and it is widely used in power generation, heating, industrial boilers and other fields. In biomass power plants, accurately determining the calorific value of fuel helps to optimize combustion processes and improve power generation efficiency. Therefore, accurate detection of the calorific value of biomass fuel has important practical significance.

[0003] For example, in the detection of the calorific value of biomass fuel, the oxygen bomb calorimetry is currently the most commonly used and standardized method. Its core logic is to calculate the calorific value per unit mass of fuel by measuring the heat released by the complete combustion of fuel under constant volume. The biomass fuel is crushed, dried and ground into a uniform powder, and placed in a combustion pan. The combustion pan is placed in a sealed metal container that is resistant to high temperature and pressure. An ignition wire is connected and brought into contact with the sample. High-pressure oxygen is introduced into the oxygen bomb to ensure that the sample can burn completely. The oxygen bomb is then placed in a metered amount of water in the inner cylinder of the calorimeter. The water temperature is made uniform by stirring. After ignition, the sample burns in the oxygen bomb, and the heat released is transferred to the water in the inner cylinder, causing the water temperature to rise. The instrument accurately records the water temperature change through a temperature sensor. For example, Chinese Patent No. CN221038800U discloses a calorimeter.

[0004] Considering that during the biomass fuel calorific value testing process, the metal container may shift or even move arbitrarily due to the interaction between its own weight and the buoyancy of the water, the stirring equipment may be obstructed or collided with due to the change in the position of the metal container when stirring the medium inside the tester, which may affect the uniformity and stability of the stirring, resulting in reduced heat transfer efficiency and uneven water temperature distribution. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned shortcomings and provide a biomass fuel calorific value detector;

[0006] To achieve the above objectives, this utility model provides a biomass fuel calorific value detector, including a detector body. The internal cavity of the detector body is provided with a limiting component for supporting a metal container to ensure that the metal container remains within a certain area during the testing process.

[0007] The inner wall of the detector body is provided with an auxiliary limiting component. The auxiliary limiting component cooperates with the limiting component to apply a vertically downward force to the metal combustion container to ensure that it is completely submerged in water.

[0008] The bottom of the inner cavity of the detector body is equipped with a stirring component to promote uniform water temperature distribution;

[0009] The limiting component is fixed inside the main body of the detector to form a regional positioning for the metal container, preventing it from moving randomly during the test. The auxiliary limiting component works in conjunction with the limiting component to force the metal container to be completely submerged by vertical downward pressure, eliminating buoyancy interference. The stirring component is arranged at the bottom of the cavity to ensure uniform water temperature and guarantee heat transfer efficiency through uniform stirring.

[0010] As a further improvement to this technical solution, the limiting component includes a support frame fixedly connected to the inner wall of the detector body, a connecting frame fixedly connected to the top of the support frame, a metal container placed inside the connecting frame, a threaded interface provided on the inner wall of the connecting frame, the inner wall of the threaded interface being threadedly connected to the auxiliary limiting component, and multiple slots opened on the surface of the connecting frame.

[0011] The support frame provides stable bottom support, while the connecting frame uses the inner wall contour to constrain the position of the metal container, ensuring that it remains within the preset area during the inspection process.

[0012] As a further improvement to this technical solution, the auxiliary limiting component includes a sealing plate that contacts the inner wall of the detector body, a threaded post that is fixedly connected to the bottom of the sealing plate, the surface of the threaded post being threadedly connected to a threaded interface, and a base plate that is fixedly connected to the bottom of the threaded post.

[0013] The sealing of the instrument body is achieved by the cooperation between the sealing plate and the inner wall of the instrument body. With the help of the threaded drive of the threaded column and the threaded interface, the bottom plate can be driven to rise and fall axially by rotating the sealing plate, thereby applying an adjustable vertical downward pressure to the metal container, ensuring that it is stably submerged in water during the testing process, while avoiding positional displacement caused by buoyancy or agitation of water flow.

[0014] As a further improvement to this technical solution, the stirring assembly includes a rotating shaft rotatably connected to the bottom of the inner cavity of the detector body, and a stirring rod is fixedly connected to the top of the rotating shaft, with the top of the stirring rod located below the support frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this biomass fuel calorific value detector, the limiting component forms a basic area restriction on the metal container. Combined with the vertical downward force applied by the auxiliary limiting component, the dual constraint effectively avoids the positional deviation or random movement of the metal container due to the imbalance of gravity and buoyancy. It eliminates the risk of collision and obstruction between the stirring component and the metal container, ensuring the continuity and stability of the stirring process. The auxiliary limiting component forces the metal container to be completely submerged in water, so that the water and the container surface are in full contact. At the same time, the stirring component achieves uniform water temperature distribution in a non-interference state, reduces local temperature gradients, and ensures that the heat released by combustion is efficiently transferred to the water. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the limiting component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the stirring rod structure of this utility model;

[0020] The meanings of the labels in the diagram are as follows:

[0021] 1. Main body of the detector;

[0022] 2. Limiting component; 21. Support frame; 22. Connecting frame; 220. Threaded interface;

[0023] 3. Auxiliary limiting components; 31. Sealing plate; 32. Threaded post; 33. Base plate;

[0024] 4. Stirring assembly; 41. Rotating shaft; 42. Stirring rod. Detailed Implementation

[0025] 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.

[0026] Example

[0027] Please see Figures 1-3 As shown, this embodiment provides a biomass fuel calorific value detector, including a detector body 1. The internal cavity of the detector body 1 is provided with a limiting component 2 for supporting a metal container, so as to ensure that the metal container is kept in one area during the detection process.

[0028] The inner wall of the detector body 1 is provided with an auxiliary limiting component 3. The auxiliary limiting component 3 cooperates with the limiting component 2 to apply a vertically downward force to the metal combustion container to ensure that it is completely submerged in water.

[0029] A stirring assembly 4 is installed at the bottom of the inner cavity of the main body 1 of the detector to promote uniform water temperature distribution;

[0030] By rotating the auxiliary limiting component 3 to separate it from the limiting component 2, the oxygenated metal container is placed stably inside the limiting component 2. At this time, the limiting component 2 will restrict the position of the metal container, fixing it in the preset area. By connecting the auxiliary limiting component 3 to the inner wall of the detector body 1, and rotating the auxiliary limiting component 3 to connect it with the limiting component 2, and moving it downward, the metal container inside the limiting component 2 is completely submerged in water, preventing the container from floating or shaking due to buoyancy. After confirming that the metal container is firmly positioned, the stirring component 4 is started to stir the water at a low and uniform speed to make the water temperature evenly distributed. The sample inside the metal container is ignited by the ignition device. The heat released by the sample combustion is transferred to the water through the container wall, causing the water temperature to rise. The temperature sensor monitors the water temperature change in real time, and the control system records the temperature data before and after combustion.

[0031] The improvement in this embodiment is as follows:

[0032] Considering that during the biomass fuel calorific value testing process, the metal container may shift or even move arbitrarily due to the interaction between its own weight and the buoyancy of the water, the stirring equipment may be obstructed or collide with the medium inside the tester due to changes in the position of the metal container, thus affecting the uniformity and stability of the stirring, resulting in reduced heat transfer efficiency and uneven water temperature distribution. Therefore, the limiting component 2 forms a basic area restriction on the metal container, and the auxiliary limiting component 3 applies a vertical downward force. The dual constraint effectively avoids the position shift or arbitrary movement of the metal container due to the imbalance of gravity and buoyancy, eliminates the risk of collision and obstruction between the stirring component 4 and the metal container, and ensures the continuity and stability of the stirring process. The auxiliary limiting component 3 forces the metal container to be completely submerged in water, so that the water and the container surface are in full contact. At the same time, the stirring component 4 achieves uniform water temperature distribution without interference, reduces local temperature gradients, and ensures that the heat released by combustion is efficiently transferred to the water.

[0033] In order for the limiting component 2 to restrict the position of the metal container, the parts of the limiting component 2 need to be disclosed. Therefore, the limiting component 2 includes a support frame 21 fixedly connected to the inner wall of the detector body 1. A connecting frame 22 is fixedly connected to the top of the support frame 21, and the metal container is placed inside the connecting frame 22.

[0034] The surface of the connecting frame 22 has multiple slots. When the operator vertically places the oxygenated metal container into the connecting frame 22, the water in the inner cavity of the detector body 1 will flow into the connecting frame 22 through the slots, allowing the water to come into contact with the surface of the metal container.

[0035] In order to enable the limiting component 2 to be connected to the auxiliary limiting component 3, the inner wall of the connecting frame 22 is provided with a threaded interface 220, and the inner wall of the threaded interface 220 is threadedly connected to the auxiliary limiting component 3.

[0036] In order to enable the auxiliary limiting component 3 to connect with the connecting frame 22 and assist the metal container to be completely submerged in water, the auxiliary limiting component 3 includes a sealing plate 31 that contacts the inner wall of the detector body 1. A threaded post 32 is fixedly connected to the bottom of the sealing plate 31. The surface of the threaded post 32 is threadedly connected to the threaded interface 220. A base plate 33 is fixedly connected to the bottom of the threaded post 32. The threaded post 32 of the auxiliary limiting component 3 is aligned with the threaded interface 220 on the inner wall of the connecting frame 22. The sealing plate 31 is rotated clockwise, and the auxiliary limiting component 3 is moved downward through the threaded connection. The rotation continues until the base plate 33 contacts the top of the metal container. The rotation continues to apply vertical downward pressure to ensure that the metal container is completely submerged in water. At the same time, the sealing plate 31 and the sealing ring on the inner wall of the detector body 1 are sealed.

[0037] In order to enable the stirring assembly 4 to stir the water in the inner cavity of the detector body 1 and make the water temperature uniform, it is necessary to further disclose the parts of the stirring assembly 4. Therefore, the stirring assembly 4 includes a rotating shaft 41 rotatably connected to the bottom of the inner cavity of the detector body 1, and a stirring rod 42 is fixedly connected to the top of the rotating shaft 41. The rotating shaft 41 drives the stirring rod 42 to rotate, and the stirring rod 42 located below the support frame 21 stirs the water and makes the water temperature uniformly distributed.

[0038] In order to prevent the stirring rod 42 from contacting the limiting component 2 when it rotates, the top of the stirring rod 42 is positioned below the support frame 21.

[0039] In practical use, the biomass fuel calorific value detector of this utility model involves grinding and weighing the biomass fuel sample, placing it into a metal container, and filling it with high-pressure oxygen. The auxiliary limiting component 3 is rotated to separate it from the limiting component 2. The auxiliary limiting component 3 is then raised to a sufficient height, and the oxygen-filled metal container is vertically placed inside the connecting frame 22. Water from the detector body 1 flows naturally into the frame through the groove on the surface of the connecting frame 22, making full contact with the outer surface of the metal container. The threaded post 32 of the auxiliary limiting component 3 is aligned with the threaded interface 220 of the connecting frame 22. The sealing plate 31 is rotated clockwise to allow the auxiliary limiting component to... As part 3 moves downward along the thread, the base plate 33 gradually approaches and contacts the top of the metal container, and continues to rotate to apply vertical pressure until the metal container is completely submerged in water. At the same time, the sealing plate 31 seals with the inner wall of the detector body 1 through the sealing ring. The stirring assembly 4 is started, and the rotating shaft 41 drives the stirring rod 42 to rotate. The stirring rod 42 located below the support frame 21 stirs the water and ignites the sample in the metal container through the ignition device. The heat released by the combustion is transferred to the water through the container wall. The temperature sensor collects water temperature data in real time. The stirring assembly 4 continues to work to ensure that the heat is evenly distributed in the water and eliminate the temperature gradient.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A biomass fuel calorific value detector, comprising a detector main body (1), characterized in that: The internal cavity of the detector body (1) is provided with a limiting component (2) for supporting the metal container, so as to ensure that the metal container is kept in one area during the detection process; The inner wall of the detector body (1) is provided with an auxiliary limiting component (3). The auxiliary limiting component (3) cooperates with the limiting component (2) to apply a vertical downward force to the metal combustion container to ensure that it is completely submerged in water. The bottom of the inner cavity of the detector body (1) is provided with a stirring component (4) to promote uniform water temperature distribution.

2. The biomass fuel calorific value detector according to claim 1, characterized in that: The limiting component (2) includes a support frame (21) fixedly connected to the inner wall of the detector body (1), and a connecting frame (22) fixedly connected to the top of the support frame (21). The interior of the connecting frame (22) is used to place a metal container.

3. The biomass fuel calorific value detector according to claim 2, characterized in that: The surface of the connecting frame (22) has multiple slots.

4. The biomass fuel calorific value detector according to claim 3, characterized in that: The inner wall of the connecting frame (22) is provided with a threaded interface (220), and the inner wall of the threaded interface (220) is threadedly connected to the auxiliary limiting component (3).

5. The biomass fuel calorific value detector according to claim 4, characterized in that: The auxiliary limiting component (3) includes a sealing plate (31) that contacts the inner wall of the detector body (1). A threaded post (32) is fixedly connected to the bottom of the sealing plate (31). The surface of the threaded post (32) is threadedly connected to the threaded interface (220). A base plate (33) is fixedly connected to the bottom of the threaded post (32).

6. The biomass fuel calorific value detector according to claim 1, characterized in that: The stirring assembly (4) includes a rotating shaft (41) rotatably connected to the bottom of the inner cavity of the detector body (1), and a stirring rod (42) is fixedly connected to the top of the rotating shaft (41).

7. The biomass fuel calorific value detector according to claim 6, characterized in that: The top of the stirring rod (42) is located below the support frame (21).

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