Tube blockage monitoring system of tubular furnace

Abstract

The utility model relates to a pipe blockage monitoring system of a tubular furnace, which is used for monitoring the blockage condition of a gas outlet pipe of the tubular furnace and comprises a monitoring device, a data acquisition device and an alarm device, the gas outlet pipe at least comprises a first pipe section and a second pipe section which are communicated with each other, the first pipe section is connected with a gas outlet of the tubular furnace, and a first included angle is formed between the first pipe section and the second pipe section; the monitoring device comprises a camera arranged on the outer wall of the second section of pipe and a gas flow meter mounted at the tail end of the gas outlet pipe, and the camera faces the pipe opening of the first section of pipe so as to shoot images in the first section of pipe; and the camera and the gas flowmeter are electrically connected with the alarm device through the data acquisition device. The pipe blockage monitoring system disclosed by the utility model can monitor whether the gas outlet pipe of the tubular furnace is blocked or not in real time and provide an alarm when an abnormality is found so as to prevent dangers from occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of tubular furnaces, in particular to a tube blockage monitoring system for tubular furnaces. Background Art

[0002] In the field of battery recycling, especially in the reuse of waste battery negative electrode materials, removing impurities from negative electrode materials is a key step. This process usually involves high-temperature treatment, including roasting or pyrolysis to remove organic matter from the negative electrode. In order to prevent the generation of dioxins or other harmful gases during this process, the operating conditions are often set in an anaerobic environment and the temperature range of 300-600°C is used.

[0003] When doing impurity removal experiments in the laboratory, tubular furnaces are often used to provide high temperature and anaerobic environment. In order to maintain the required anaerobic environment, inert gas needs to be continuously introduced into the tubular furnace. However, if the outlet pipe of the tubular furnace is blocked, continuing to introduce inert gas into the tubular furnace will cause the pressure in the furnace to continue to rise. When the pressure is too high, the exhaust gas will leak from other joints, causing pollution and safety hazards.

[0004] Therefore, it is necessary to develop an instrument or device that can monitor whether the outlet pipe of the tubular furnace is blocked, monitor the pipeline status in real time, and provide a warning when an abnormality is found to prevent the occurrence of danger and reduce the potential pollution of the exhaust gas to the environment. Utility Model Content

[0005] The utility model aims to provide a tube blockage monitoring system for a tube furnace to solve the above-mentioned problem.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, the present application provides a tube blockage monitoring system for a tube furnace, which is used to monitor the blockage of an outlet pipe of the tube furnace, and includes: a monitoring device, a data acquisition device, and an alarm device;

[0008] The gas outlet pipe at least comprises a first section of the pipe and a second section of the pipe which are connected to each other, wherein the first section of the pipe is connected to the gas outlet of the tube furnace, and the first section of the pipe and the second section of the pipe are arranged at a first angle;

[0009] The monitoring device includes a camera arranged on the outer wall of the second section of the pipe and a gas flow meter installed at the end of the outlet pipe. The camera is facing the pipe mouth of the first section of the pipe to capture the image inside the first section of the pipe. The camera and the gas flow meter are electrically connected to the alarm device through the data acquisition device.

[0010] Optionally, the shooting direction of the camera is parallel to the axial direction of the first tube section.

[0011] Optionally, a sealing tube is fixed on the outer wall of the second tube section, and the camera is sealed and installed in the sealing tube.

[0012] Optionally, a glass sealing block is provided at the butt joint between the second tube section and the sealing tube.

[0013] Optionally, the first section of the pipe is arranged obliquely upward, the second section of the pipe is arranged horizontally, and the first section of the pipe is detachably connected to the second section of the pipe.

[0014] Optionally, the gas outlet pipe further includes a third section of pipe connected to the second section of pipe, the third section of pipe is vertically arranged, and the gas flow meter is arranged at the outlet end of the third section of pipe.

[0015] Optionally, a simulation device is also included, and the simulation device is electrically connected to the data acquisition device and the air intake flow control device of the tubular furnace.

[0016] In a second aspect, the present application provides a tubular furnace, including an air outlet pipe and the above-mentioned tube blockage monitoring system of the tubular furnace.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The first section of the tube is directly connected to the outlet of the tube furnace, so the blockage will first occur in the first section of the tube. The camera is installed on the outer wall of the second section of the tube and faces the axis of the first section of the tube to capture the real-time image of the cross section of the first section of the tube and monitor the blockage in the first section of the tube. The gas flow meter is installed at the end of the outlet pipe to measure the exhaust gas flow passing through the end of the outlet pipe. The change in the exhaust gas flow is a direct indication of the blockage of the entire outlet pipe. When the camera or gas flow meter detects a blockage, the alarm device sounds an alarm to remind the operator to replace or clean the outlet pipe in time. The alarm device can sound an alarm by generating a loud alarm sound or by a red flashing light or other high-visibility indicator light to attract the attention of the staff on site. The data acquisition device can also be connected to the central monitoring system to transmit the image inside the first section of the tube and the data of the gas flow meter to the monitoring screen in real time, ensuring that the operator can monitor the entire process from a central location. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0021] Figure 1 Schematic diagram of the structure of the tube blockage monitoring system of the tube furnace in this embodiment;

[0022] Figure 2 Schematic diagram of the pipe blockage monitoring system of the tube furnace in this embodiment;

[0023] Figure 3 This is a schematic diagram of an image of a cross section of the first tube captured by a camera in this embodiment.

[0024] Explanation of the reference numerals: 10, outlet pipe; 11, first section of pipe; 12, second section of pipe; 121, glass sealing block; 13, third section of pipe; 20, monitoring device; 21, camera; 210, sealing pipe; 22, gas flow meter; 30, data acquisition device; 40, alarm device; 50, simulation device; 60, air intake flow control device. DETAILED DESCRIPTION

[0025] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0027] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0028] Reference Figures 1 to 3 The pipe blockage monitoring system of the tubular furnace disclosed in this embodiment is used to monitor the blockage of the gas outlet pipe 10 of the tubular furnace, and includes: a monitoring device 20, a data acquisition device 30 and an alarm device 40;

[0029] The gas outlet pipe 10 at least includes a first section pipe 11 and a second section pipe 12 which are connected to each other, wherein the first section pipe 11 is connected to the gas outlet of the tube furnace, and the first section pipe 11 and the second section pipe 12 are arranged at a first angle;

[0030] The monitoring device 20 includes a camera 21 arranged on the outer wall of the second section of the pipe 12 and a gas flow meter 22 installed at the end of the outlet pipe 10. The camera 21 is facing the pipe mouth of the first section of the pipe 11 to capture the image inside the first section of the pipe 11. The camera 21 and the gas flow meter 22 are both electrically connected to the alarm device 40 through the data acquisition device 30.

[0031] The first section of the tube 11 is directly connected to the gas outlet of the tube furnace, so the blockage will first occur in the first section of the tube 11. The camera 21 is installed on the outer wall of the second section of the tube 12 and faces the axis direction of the first section of the tube 11 to capture the real-time image of the cross section inside the first section of the tube 11 and monitor the blockage inside the first section of the tube 11. The gas flow meter 22 is installed at the end of the outlet pipe 10 to measure the exhaust gas flow passing through the end of the outlet pipe 10. The change in the exhaust gas flow is a direct indication of the blockage of the entire outlet pipe 10. When the camera 21 or the gas flow meter 22 detects a blockage, the alarm device 40 sounds an alarm to remind the operator to replace or clean the outlet pipe 10 in time. The alarm device 40 can sound an alarm by generating a loud alarm sound or by a red flashing light or other high-visibility indicator light to attract the attention of the staff on site. The data acquisition device 30 can also be connected to the central monitoring system to transmit the image inside the first section of the tube 11 and the data of the gas flow meter 22 to the monitoring screen in real time, ensuring that the operator can monitor the entire process from a central location.

[0032] Furthermore, the shooting direction of the camera 21 is parallel to the axial direction of the first section of the pipe 11 to obtain a better shooting angle, so that the blockage situation in the first section of the pipe 11 can be accurately obtained.

[0033] Furthermore, a sealing tube 210 is fixed on the outer wall of the second section of the tube 12 , and the camera 21 is sealed and installed in the sealing tube 210 .

[0034] The sealing tube 210 is provided to accommodate the camera 21. The sealing tube 210 is fixed on the outer wall of the second section 12 of the outlet pipe 10. The camera 21 monitors the condition of the first section 11, and the sealing tube 210 protects the camera 21 from the high temperature in the tubular furnace and the medium (such as gas, dust, etc.) in the outlet pipe 10.

[0035] Furthermore, a glass sealing block 121 is provided at the joint position between the second section of the tube 12 and the sealing tube 210 .

[0036] The glass sealing block 121 is made of a highly heat-resistant and highly light-transmittance material such as quartz glass or sapphire glass, and is sealed and connected to the second section of the tube 12 via a high-temperature resistant sealing ring, which not only ensures the sealing, but also facilitates the camera 21 to capture a clear internal image of the first section of the tube 11 for blockage detection.

[0037] The first section of the pipe 11 is arranged obliquely upward, the second section of the pipe 12 is arranged horizontally, and the first section of the pipe 11 and the second section of the pipe 12 are detachably connected.

[0038] Since the exhaust gas from the outlet of the tube furnace carries high temperature, the first section of the tube 11 is arranged obliquely upward to help guide the exhaust gas to flow naturally from the bottom upward, reduce the heat accumulation that may be caused by direct rise, and facilitate the camera 21 to detect particles or other blocking materials deposited due to gravity; the horizontal arrangement of the second section of the tube 12 helps to stabilize the gas flow to a certain extent, and it is easier to determine the change in gas flow rate during monitoring. The first section of the tube 11 and the second section of the tube 12 are detachably connected to facilitate cleaning or replacement.

[0039] Furthermore, the gas outlet pipe 10 also includes a third pipe section 13 connected to the second pipe section 12 . The third pipe section 13 is vertically arranged, and the gas flow meter 22 is arranged at the outlet end of the third pipe section 13 .

[0040] The third section pipe 13 is arranged vertically so that the exhaust gas flows from the second section pipe 12 into the third section pipe 13 and is decelerated and cooled again. When the exhaust gas reaches the outlet end of the third section pipe 13, the gas flow is relatively stable, which can provide a more accurate flow measurement environment for the gas flow meter 22. Placing the gas flow meter 22 at the outlet end of the third section pipe 13 can provide an additional data point for overall monitoring. Combined with the image data provided by the camera 21, the operator or the automatic monitoring system can more accurately analyze the status of the entire outlet pipe 10 and take corresponding measures in time when signs of blockage are found.

[0041] The pipe blockage monitoring system further comprises a simulation device 50 , which is electrically connected to the data acquisition device 30 and an air intake flow control device 60 of the tube furnace.

[0042] The machine learning algorithm built into the simulation device 50 analyzes the relationship between the mass, temperature, and time parameters input for each pyrolysis experiment and the exhaust gas condensation and ash deposition blockage conditions based on the mass, temperature, and time input for each previous pyrolysis experiment, as well as the collected images of the interior of the first section of the tube 11 and the data from the gas flow meter 22. It also analyzes at what temperature the exhaust gas will condense in the first section of the tube 11 when discharged, and analyzes how much airflow will cause ash to be deposited in the first section of the tube 11 when the temperature is not too high at the initial stage of heating. It simulates the blockage of the first section of the tube 11 during the next pyrolysis, so as to predict in advance whether the first section of the tube 11 will meet the requirements for the next pyrolysis experiment. If not, the operator is reminded to replace or clean the first section of the tube 11 in time.

[0043] Furthermore, the simulation device 50 also outputs an airflow adjustment signal to the air intake flow control device 60. The air intake flow control device 60 receives the instructions manually input before pyrolysis and introduces a stable flow of gas into the tubular furnace. During the operation of the pyrolysis program, when the simulation device 50 receives the airflow adjustment signal, the air intake flow is adjusted to ensure that the pressure in the tubular furnace will not be too high during the pyrolysis operation.

[0044] This embodiment further provides a tubular furnace, comprising an air outlet pipe 10 and the above-mentioned tube blockage monitoring system for the tubular furnace.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tube blockage monitoring system for a tube furnace, used for monitoring the blockage of an outlet pipe (10) of a tube furnace, characterized in that: include: A monitoring device (20), a data acquisition device (30) and an alarm device (40); The gas outlet pipe (10) comprises at least a first pipe section (11) and a second pipe section (12) which are connected to each other, wherein the first pipe section (11) is connected to the gas outlet of the tube furnace, and the first pipe section (11) and the second pipe section (12) are arranged at a first angle; The monitoring device (20) comprises a camera (21) arranged on the outer wall of the second pipe section (12) and a gas flow meter (22) installed at the end of the gas outlet pipe (10); the camera (21) faces the pipe opening of the first pipe section (11) to capture an image inside the first pipe section (11); and the camera (21) and the gas flow meter (22) are both electrically connected to the alarm device (40) via the data acquisition device (30).

2. The tube blockage monitoring system for a tube furnace according to claim 1, characterized in that: The shooting direction of the camera (21) is parallel to the axial direction of the first section of the tube (11).

3. The tube blockage monitoring system for a tube furnace according to claim 1, characterized in that: A sealing tube (210) is fixed on the outer wall of the second tube section (12), and the camera (21) is sealed and installed inside the sealing tube (210).

4. The tube blockage monitoring system for a tube furnace according to claim 3, characterized in that: A glass sealing block (121) is provided at the butt joint between the second section of the tube (12) and the sealing tube (210).

5. The tube blockage monitoring system for a tube furnace according to claim 1, characterized in that: The first section of the pipe (11) is arranged obliquely upward, the second section of the pipe (12) is arranged horizontally, and the first section of the pipe (11) and the second section of the pipe (12) are detachably connected.

6. The tube blockage monitoring system for a tube furnace according to claim 1, characterized in that: The gas outlet pipe (10) further comprises a third pipe section (13) connected to the second pipe section (12); the third pipe section (13) is arranged vertically, and the gas flow meter (22) is arranged at the outlet end of the third pipe section (13).

7. The tube blockage monitoring system for a tube furnace according to claim 1, characterized in that: It also includes a simulation device (50), wherein the simulation device (50) is electrically connected to the data acquisition device (30) and the air intake flow control device (60) of the tube furnace.

8. A tubular furnace, characterized in that: A tube blockage monitoring system for a tube furnace comprising a gas outlet pipe (10) and any one of claims 1 to 7.

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