Visual system for observing material reaction in tubular furnace

Abstract

The utility model discloses a visual system for observing material reaction in a tubular furnace, and belongs to the field of high-temperature equipment monitoring devices. The visualization system comprises a pipe body, a camera shooting unit, a light supplementing lamp and a cooling unit, the camera shooting unit and the light supplementing lamp are arranged at the bottom end of the interior of the pipe body, and a camera shooting hole and a light supplementing hole are formed in the bottom end of the pipe body and used for imaging and light supplementing; a gas inlet pipeline is arranged at the opening end of the pipe body and used for introducing protective gas to form a gas protective layer; a fixed flange is arranged on the tube body and is used for being connected with a tail flange of the tubular furnace; the cooling unit is arranged on the pipe body, is composed of three layers of concentric oval pipes and is used for achieving heat exchange cooling of the water inlet channel and the water outlet channel. The visualization system is compact in structure, can work for a long time in a high-temperature environment, can clearly observe and record the reaction state of materials in the tubular furnace, and effectively improves the imaging definition and the equipment durability.

Description

Technical Field

[0001] This utility model belongs to the field of high-temperature equipment monitoring devices, specifically relating to a visualization system for observing material reactions inside a tubular furnace. Background Technology

[0002] When sintering certain materials in small batches in the laboratory, such as materials for producing cathode materials, they are typically placed in ceramic boats and sintered in existing tube furnaces at a certain temperature rise rate. As the furnace temperature rises, the temperature of the material also gradually increases. When the material reaches a certain temperature, glucose, ethylene glycol, and other components inside undergo decomposition reactions, producing large amounts of water vapor, carbon dioxide, and other gases. As these gases rise, they carry small, lightweight particles from the upper surface out of the ceramic boat, resulting in waste of raw materials and contamination of the tube furnace. According to chemical reaction mechanisms, the higher the material temperature, the faster the chemical reaction rate, and the more products are generated per unit time. This means a greater gas flow rate at the product surface, thus carrying small, lightweight particles out of the ceramic boat.

[0003] In the sintering process of cathode materials, to reduce the decomposition rate of the carbon source, the output power of the heating device can be reduced at a certain point before it reaches the decomposition temperature. This decreases the heat flux density on the material surface, causing the temperature to rise slowly, thereby reducing the gas production per unit time and preventing the removal of smaller particles from the ceramic boat. Due to the special structure of the tube furnace, it is impossible to observe the state changes of the material inside the ceramic boat during sintering, or the relationship between the apparent temperature and gas production of the tube furnace. Therefore, a visualization system for observing the physical / chemical reactions inside the tube furnace was designed. Utility Model Content

[0004] The purpose of this invention is to provide a visualization system for observing the reaction of materials inside a tubular furnace, specifically for observing the changes in the reaction state of materials inside the furnace.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A visualization system for observing material reactions inside a tubular furnace, comprising:

[0007] Tube body, camera unit, fill light, cooling unit;

[0008] The camera unit and the fill light are located at the bottom inside the tube;

[0009] The bottom end of the tube is provided with a camera hole and a fill light hole, which are used for imaging by the camera unit and for fill light by the fill light lamp, respectively.

[0010] The tube body is provided with an air inlet pipe at its opening end, which is used to introduce gas into the camera hole and the fill light hole to form a gas protective layer;

[0011] The tube body is provided with a fixing flange for fixing the visualization system to the tail flange of the tubular furnace;

[0012] The cooling unit is disposed on the tube body and is used to cool the tube body.

[0013] Furthermore, the camera unit and the fill light are arranged side by side along the axis of the tube.

[0014] Furthermore, the camera unit is electrically connected to an external display device to transmit the acquired image information to the display device in real time, and supports image frame capture and saving functions.

[0015] Furthermore, the supplementary light is a brightness-adjustable light source.

[0016] Furthermore, the camera hole and the fill light hole are disposed on the lower inclined surface at the bottom end of the tube body.

[0017] Furthermore, the tube body is provided with a data cable channel for accommodating the data cable connecting the camera unit and the fill light, and the port of the data cable channel is located at the opening end of the tube body.

[0018] Furthermore, the cooling unit is composed of three concentric elliptical tubes, namely an outer elliptical tube, a middle elliptical tube, and an inner elliptical tube; a return water channel is formed between the outer elliptical tube and the middle elliptical tube, and a water inlet channel is formed between the middle elliptical tube and the inner elliptical tube.

[0019] Furthermore, the cooling unit includes a cooling water inlet and a cooling water outlet; the cooling water inlet is connected to the cooling water inlet pipe via a valve, and the cooling water outlet is connected to the cooling water return pipe.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. This visualization system can work stably in high-temperature environments, enabling long-term continuous observation and recording of the physical and chemical reaction processes of materials inside the reaction device. It has the ability to capture the instantaneous state of materials, improving the real-time performance and completeness of data acquisition.

[0022] 2. This visualization system has a compact structure and occupies little space. The camera unit and the supplementary lighting unit share a cooling water system, which reduces the number and volume of system components and has less interference with the airflow distribution inside the tube furnace. It is suitable for the tail end of high-temperature reaction devices with limited space.

[0023] 3. This visualization system integrates an adjustable light source unit, which has a built-in supplementary light unit to effectively compensate for light scattering on the material surface and ensure image clarity. At the same time, the camera unit has a manual adjustment function, which can flexibly control the position of the shooting area to adapt to different observation needs.

[0024] 4. This visualization system has a lens self-cleaning function, which can automatically remove dust adhering to the lens of the camera unit and the surface of the supplementary light, ensuring the quality of the observed images, reducing the maintenance frequency, and improving the continuity and reliability of system operation. Attached Figure Description

[0025] Figure 1 It is a frontal cross-sectional view of the visualization system.

[0026] Figure 2 It is a top-down sectional view of the visualization system.

[0027] Figure 3 It is the left view of the visualization system.

[0028] Figure 4 It is the right view of the visualization system.

[0029] Figure 5 It is a front sectional view of a tubular furnace with a visualization system.

[0030] Figure 6 This is a right view of a tubular furnace with a visualization system. Detailed Implementation

[0031] To make the various technical features, advantages, or effects of the present invention more apparent and understandable, detailed descriptions are provided below through embodiments.

[0032] This embodiment discloses a visualization system 100 for observing and recording the state changes of materials in a ceramic boat within a tube furnace during the sintering process. The system structure is as follows: Figures 1 to 4 As shown, it includes a main body pipe (not labeled) as well as an air intake pipe 101, a cooling water outlet 102, a fixed flange 103, a cooling unit 104, a camera hole 105, a supplementary light hole 106, a camera unit 107, a supplementary light 108, a cooling water inlet 109, and a data cable channel 110.

[0033] An air intake pipe 101 is located at the inlet of the pipe body and is connected to a fresh gas supply device via a valve. When fresh gas enters, it is guided into the inner elliptical tube of the cooling unit 104 at a set flow rate and flows sequentially through the camera hole 105 and the supplementary light hole 106 at a specific angle. A stable gas protective layer is formed on the lens surface of the camera unit 107 and the light-emitting surface of the supplementary light 108, thereby effectively preventing the adhesion of impurities such as dust and tar and ensuring the cleanliness of optical components.

[0034] The cooling unit 104 consists of three concentric elliptical tubes: an outer elliptical tube, a middle elliptical tube, and an inner elliptical tube, which structurally form the tube body of the visualization system 100. A return water channel is formed between the outer and middle elliptical tubes, and a water inlet channel is formed between the middle and inner elliptical tubes. The cooling water inlet 109 is connected to the cooling water inlet pipe via a valve, and the cooling water outlet 102 is connected to the cooling water return pipe to discharge the heat-absorbing circulating water.

[0035] The bottom of the tube of the visualization system 100 is equipped with a camera unit 107 and a fill light 108, which can maintain the appropriate temperature of the working components in high-temperature environments and improve heat dissipation efficiency through a cooling water circulation system to avoid heat radiation affecting the imaging effect.

[0036] The camera aperture 105 is located at an appropriate position on the inclined portion of the inner end face of the tube body. Its structure is specially designed to expose the photosensitive part of the camera unit 107, enabling it to acquire image information of the material inside the ceramic boat. At the same time, gas flows through the camera aperture 105 at a set angle, forming a stable gas protective layer on the lens surface. The supplementary light aperture 106 has a similar structure to the camera aperture 105 and is used to guide the light emitted by the supplementary light 108 to illuminate the area to be observed, while forming a protective airflow to prevent optical contamination.

[0037] The camera unit 107 is used for real-time imaging of the material's state, and has image acquisition and photo recording functions. This unit is connected to an external display unit via data cable channel 110. The acquired image information is transmitted to the display device in real time for monitoring, and specified image frames can be saved as needed. The supplementary light 108 serves as an auxiliary light source for the camera, providing uniform and stable illumination to the imaging area in low-light environments, ensuring image clarity and quality.

[0038] The data cable channel 110 is located on the tube body, and the channel port is located on the opening end of the tube body. The data cable channel 110 is used to transmit the image signal of the camera unit 107 and the control signal of the fill light 108, ensuring the overall data communication function of the system.

[0039] The fixed flange 103 is used to fix the visualization system 100 to the tail flange of the tube furnace. By adjusting the relative axial position between the visualization system 100 and the tube furnace, the imaging acquisition of the material state at different positions in the tube furnace can be realized, thereby improving the imaging flexibility and adaptability.

[0040] In this embodiment, the aforementioned visualization system 100 is specifically installed in the tubular furnace 200, such as... Figures 5 to 6As shown. The visualization system 100 is connected to the tail flange 202 of the tubular furnace 200 via its fixed flange 103, achieving reliable sealing and support between the visualization system 100 and the tubular furnace 200. The fixed flange 103 and the tail flange 202 are connected by an end face seal, and a sealing ring is provided between the fixed flange 103 and the visualization system 100 to ensure reliable sealing under high-temperature conditions.

[0041] The tubular furnace 200 includes components such as a ceramic boat 201, a tail flange 202, an exhaust port 203, a tail cooling water jacket 204, a cooling water outlet 205, a cooling water inlet 206, a furnace body 207, a furnace head flange 208, an air inlet 209, a furnace head cooling water jacket 210, a cooling water outlet 211, and a cooling water inlet 212. The ceramic boat 201 holds the materials to be heated and reacted, and is the main target area observed by the camera unit 107. The furnace body 207 is the core reaction chamber of the tubular furnace 200, with a tail flange 202 and a furnace head flange 208 at its two ends. The tail cooling water jacket 204 is installed at the furnace tail to reduce the temperature near the furnace tail and prevent the sealing ring from failing at high temperatures. Its cooling water outlet 205 and cooling water inlet 206 are connected to the cooling water return pipe and the cooling water inlet pipe, respectively. A furnace head cooling water jacket 210 is installed at the furnace head, also used to reduce the furnace head temperature and prevent seal failure. Its cooling water outlet 211 and cooling water inlet 212 are connected to the return water and inlet water pipes, respectively. The furnace tail flange 202 is installed in conjunction with the visualization system 100. The furnace head flange 208 is sealed to the pipeline, and the air inlet 209 is connected to the air intake system. The exhaust port 203 is connected to the exhaust pipe via a valve for discharging reaction gases from the furnace.

[0042] After the visualization system 100 is installed, it can be used to observe and record the state changes of materials inside the ceramic boat 201 during the reaction process in real time. The specific application steps are as follows:

[0043] Step 1: Load the material to be reacted into the ceramic boat 201, and send the ceramic boat 201 into the internal heating area of ​​the tube furnace 200, and install and fix the furnace tail flange 202;

[0044] Step 2: Install the visualization system 100 to the furnace tail flange 202 via the fixing flange 103 and the sealing ring. Adjust the position of the visualization system 100 so that the lens of the camera unit 107 is aligned with the center of the ceramic boat 201. Then tighten the bolts on the fixing flange 103.

[0045] Step 3: Turn on the cooling system of the tubular furnace 200, including the inlet and outlet water pipes connected to the cooling water inlets 212 and 206 and the cooling water outlets 211 and 205 of the furnace head cooling water jacket 210 and the furnace tail cooling water jacket 204, and at the same time open the valves corresponding to the air inlet 209 and the exhaust port 203.

[0046] Step 4: Open the valves of the cooling water inlet 109, cooling water outlet 102 and air intake pipe 101 of the visualization system 100 to ensure the normal operation of the gas protection layer and cooling system;

[0047] Step 5: Enter the working interface of the camera unit 107 in the display unit, start the camera function and set the data storage path;

[0048] Step Six: Set the heating curve for the tubular furnace 200 and start the heating system;

[0049] Step 7: During the heating process, the camera unit 107 continuously records the state change information of the material inside the ceramic boat 201. If it is necessary to record an image at a specific moment, the shooting function can be manually clicked.

[0050] Step 8: After the reaction is complete, once the tubular furnace 200 has cooled to a safe temperature, close the valves of the cooling water inlet 109, cooling water outlet 102, and air inlet pipe 101 of the visualization system 100.

[0051] Step 9: Turn off camera unit 107 to end this observation and recording process.

[0052] The application method provided in this embodiment enables real-time and clear recording of material reaction processes in a high-temperature environment inside a tubular furnace, significantly improving experimental repeatability and process visualization.

[0053] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any appropriate modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the protection scope of the present invention, which is defined by the claims.

Claims

1. A visualization system for observing material reactions inside a tubular furnace, characterized in that, include: Tube body, camera unit, fill light, cooling unit; The camera unit and the fill light are located at the bottom inside the tube; The bottom end of the tube is provided with a camera hole and a fill light hole, which are used for imaging by the camera unit and for fill light by the fill light lamp, respectively. The tube body is provided with an air inlet pipe at its opening end, which is used to introduce gas into the camera hole and the fill light hole to form a gas protective layer; The tube body is provided with a fixing flange for fixing the visualization system to the tail flange of the tubular furnace; The cooling unit is disposed on the tube body and is used to cool the tube body.

2. The visualization system as described in claim 1, characterized in that, The camera unit and the fill light are arranged side by side along the axis of the tube.

3. The visualization system as described in claim 1, characterized in that, The camera unit is electrically connected to an external display device to transmit the acquired image information to the display device in real time and supports image frame capture and saving functions.

4. The visualization system as described in claim 1, characterized in that, The supplementary light is an adjustable light source.

5. The visualization system as described in claim 1, characterized in that, The camera hole and the fill light hole are located on the lower inclined surface of the bottom end of the tube.

6. The visualization system as described in claim 1, characterized in that, The tube body is provided with a data cable channel for accommodating the data cable connecting the camera unit and the fill light, and the port of the data cable channel is located at the opening end of the tube body.

7. The visualization system as described in claim 1, characterized in that, The cooling unit consists of three concentric elliptical tubes: an outer elliptical tube, a middle elliptical tube, and an inner elliptical tube. A water return channel is formed between the outer elliptical tube and the middle elliptical tube, and a water inlet channel is formed between the middle elliptical tube and the inner elliptical tube.

8. The visualization system as described in claim 1 or 7, characterized in that, The cooling unit includes a cooling water inlet and a cooling water outlet; the cooling water inlet is connected to the cooling water inlet pipe via a valve, and the cooling water outlet is connected to the cooling water return pipe.

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