Waste gas monitoring and protecting device

Abstract

The utility model relates to a waste gas monitoring protection device, which comprises a monitoring box, a monitoring probe and a waste gas monitoring controller arranged in the monitoring box, the monitoring probe extends out of the monitoring box, the monitoring box comprises a box body, a connecting frame and a bottom box, and the box body is connected with the bottom box through the connecting frame; the system further comprises a main control module, a temperature sensor, a humidity sensor, a heating unit and an exhaust unit. The temperature sensor, the humidity sensor, the heating unit and the exhaust unit are in control connection with the main control module. The heating unit is mounted in the bottom box and is used for heating the monitoring box; the exhaust unit is mounted at the top of the monitoring box and is used for exhausting gas in the monitoring box; the problem that an existing monitoring protection device adopts a drying agent for drying, and the drying effect is easily affected due to too high environment humidity is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas monitoring, in particular to a waste gas monitoring and protection device. Background Art

[0002] In the field of exhaust gas monitoring, it is crucial to ensure the normal operation of monitoring equipment and the accuracy of data. Exhaust gas monitoring and protection devices often need to work under various environmental conditions, including installation in outdoor high-humidity environments. If the exhaust gas monitoring and protection devices are not protected from rain and water, it is easy for rainwater to enter the exhaust gas monitoring and protection devices. If it rains and the air is relatively humid, humid air can also easily enter the exhaust gas monitoring and protection devices, causing problems such as metal rust and equipment failure inside the exhaust gas monitoring and protection devices, affecting normal use. Therefore, dehumidification technology has become an important consideration in the design of exhaust gas monitoring and protection devices.

[0003] Chinese patent publication number CN217646145U discloses a moisture-proof exhaust gas monitoring device comprising a monitoring box and a dust monitoring probe fixedly mounted on the monitoring box. The monitoring box has an opening on its top surface, an assembly frame fixedly connected to the top of the monitoring box outside the opening, a sealing cover fixedly mounted on the top end of the assembly frame, a moisture-proof box fixedly connected to the bottom surface of the sealing cover, a plurality of air holes spaced apart on the sides of the moisture-proof box, a desiccant placed inside the moisture-proof box, a stirring shaft rotatably mounted on the moisture-proof box via a connecting seat, and a plurality of stirring crossbeams fixedly connected to the surface of the stirring shaft at intervals. This patent stirs the desiccant in the moisture-proof box to promote uniform mixing. Although this patent achieves the purpose of drying, it requires regular replacement, which accumulates over the long term and increases operating and labor costs. Frequent replacement of the desiccant may also generate solid waste, which has a certain impact on the environment. The effectiveness of the desiccant may be greatly reduced by excessively high or low ambient humidity, thus having limitations.

[0004] Therefore, in view of this, the inventor provides an exhaust gas monitoring and protection device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an exhaust gas monitoring and protection device to solve the problem that the existing monitoring and protection devices use desiccant for drying, which is easily affected by excessively high ambient humidity and the drying effect.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] An exhaust gas monitoring and protection device comprises a monitoring box, a monitoring probe, and an exhaust gas monitoring controller installed in the monitoring box, wherein the monitoring probe extends out of the monitoring box, and the monitoring box comprises a box body, a connecting frame, and a bottom box, wherein the box body and the bottom box are connected via the connecting frame;

[0008] It also includes a main control module, a temperature sensor, a humidity sensor, a heating unit and an exhaust unit, wherein the temperature sensor, the humidity sensor, the heating unit and the exhaust unit are respectively control-connected to the main control module;

[0009] The heating unit is installed in the bottom box and is used to heat the monitoring box; the exhaust unit is installed on the top of the monitoring box and is used to exhaust the gas in the monitoring box.

[0010] According to the above technical solution, the monitoring probe will continuously collect exhaust gas samples from the environment and transmit this data to the exhaust gas monitoring controller for processing and analysis; at the same time, the temperature sensor and humidity sensor will continuously monitor the temperature and humidity data and feed this information back to the main control module; after receiving the temperature and humidity data, the main control module will make a judgment based on the preset standards and thresholds to decide whether it is necessary to start protective measures such as heating or exhaust; if the humidity in the monitoring box is too high, the main control module will control the heating unit to start and heat the inside of the monitoring box to reduce the humidity and prevent condensation or corrosion. By installing the heating unit in the bottom box, when it is started, it will increase the temperature inside the monitoring box, thereby reducing the impact of moisture on the equipment.

[0011] Furthermore, the temperature sensor includes a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor and the second temperature sensor are arranged on the inner side wall of the box body for monitoring the temperature inside the box body, and the first temperature sensor and the second temperature sensor are arranged at intervals;

[0012] The third temperature sensor is arranged on the outer wall of the box body and is used to monitor the temperature outside the box body.

[0013] According to the above technical solution, the first and second temperature sensors are installed on the inner wall of the box, spaced apart to capture temperature data at different locations within the box, reflecting the internal temperature distribution. A third temperature sensor is installed on the outer wall of the box to monitor the ambient temperature outside the box. The first, second, and third temperature sensors are electrically connected to the main control module and transmit real-time temperature data to the main control module for processing. Upon receiving the temperature data, the main control module performs comparative analysis to determine the temperature difference and trend between the inside and outside of the box. Based on this data, the main control module adjusts the operating status of the heating unit to ensure that the temperature and humidity inside the box remain within an appropriate range.

[0014] Furthermore, a partition net is installed in the connection frame, a heat preservation board is laid on the partition net, and at least two heat preservation cavities are opened on the heat preservation board.

[0015] According to the above technical solution, the screens can be installed to support and secure the insulation panels while allowing a certain degree of heat flow. The screens can be securely mounted within the connection frame through welding, screwing, or other suitable means to ensure stability and load-bearing capacity. A layer of insulation board is laid over the screens to reduce heat exchange between the interior and exterior of the enclosure, thereby maintaining a stable temperature within the enclosure and achieving the desired dehumidification effect.

[0016] Furthermore, a support plate is detachably connected to the connection frame; when the connection frame is mounted on the bottom of the box, the support plate is located in the box, and a plurality of air holes are provided on the support plate.

[0017] According to the above technical solution, the support plate is designed to be detachably connected to the connection frame, which is achieved by using screws, snaps or other quick connection mechanisms.

[0018] When the connection frame is installed at the bottom of the box, the support plate will be located inside the box.

[0019] Furthermore, the exhaust gas monitoring controller is detachably mounted on the support plate, and the support plate is used to support the exhaust gas monitoring controller;

[0020] A display screen is also provided on one side of the box body, and the display screen is connected to the exhaust gas monitoring controller.

[0021] According to the above technical solution, the support plate not only provides a stable platform for placing the exhaust gas monitoring controller, but also helps moisture diffuse through the air holes thereon to achieve the purpose of drying; a display screen is set on the box body, and the display screen is connected to the exhaust gas monitoring controller. The display screen can display the data collected and analyzed by the exhaust gas monitoring controller in real time, which is convenient for observation.

[0022] Furthermore, the humidity sensor is detachably mounted on the inner wall of the box.

[0023] Furthermore, the heating unit includes an electric heating seat and an electric heating wire installed in the bottom box, the electric heating seat is electrically connected to the electric heating wire; the electric heating seat is control-connected to the main control module.

[0024] According to the above technical solution, the electric heating seat and the electric heating wire are installed in the bottom box and electrically connected. When the main control module issues an instruction, the electric heating seat will be energized, thereby causing the electric heating wire to generate heat; as the electric heating wire heats, the temperature inside the bottom box and the entire box will gradually increase. The warm air can carry more water vapor and thus reduce the relative humidity of the air. When the temperature rises to a certain level, the moisture in the inner wall of the box and the internal air will evaporate faster, thereby accelerating the discharge of moisture.

[0025] Furthermore, the exhaust unit includes an exhaust hood and at least one fan, the exhaust hood is detachably mounted on the top of the box, and a plurality of exhaust strip holes are provided on the top of the exhaust hood; each fan is detachably mounted on the exhaust hood.

[0026] According to the above technical solution, the exhaust hood is designed to be a detachable structure for easy installation, cleaning and maintenance; the exhaust hood is detachably mounted on the top of the box through a suitable connection method (such as screws, clips, etc.), ensuring the stability of the exhaust hood while facilitating replacement or repair when necessary. A number of exhaust strip holes are opened on the top of the exhaust hood, and these strip holes are designed to effectively discharge exhaust gas or moisture inside the box while preventing external debris from entering the box.

[0027] Furthermore, a canopy and two support seats are provided on the top of the box body, and the two support seats are respectively provided on both sides of the exhaust hood; a support rod is respectively and telescopically provided in each support seat, and the two support rods are connected to the canopy.

[0028] According to the above technical solution, a canopy is installed on the top of the box to block natural elements such as rain and sunlight, and protect the exhaust hood and fan below from damage. Two support bases are respectively arranged on both sides of the exhaust hood to support and fix the canopy.

[0029] Furthermore, doors are provided on both sides of the box body, and the two doors are installed on the box body in an openable and closable manner.

[0030] According to the above technical solution, the setting of the box door allows the staff to easily open the box to maintain, inspect or replace the exhaust gas monitoring equipment inside, thereby improving the maintainability and ease of use of the equipment; when necessary, the box door can be opened to increase the ventilation of the box, which helps to dissipate heat from the equipment. At the same time, the design of the box door also provides convenience for possible future equipment upgrades or expansions, adding or removing equipment to meet ever-changing needs.

[0031] Beneficial effects of the utility model:

[0032] Through the effective cooperation of the heating unit and the exhaust unit, effective control of the humidity inside the monitoring box is achieved. The heating unit generates heat through the electric heating seat and the electric heating wire to increase the temperature inside the monitoring box, thereby reducing the impact of moisture on the equipment. It can reduce the relative humidity of the air and effectively prevent the equipment from malfunctioning or being damaged due to excessive humidity.

[0033] By installing a humidity sensor inside the monitoring box, the humidity level inside the box can be monitored in real time and the data can be transmitted to the main control module. The main control module intelligently controls the start and stop of the heating unit according to the preset humidity threshold, thereby ensuring that the humidity inside the box is maintained within a safe range. This not only improves the dehumidification efficiency, but also avoids unnecessary energy consumption. Through effective dehumidification, the utility model provides a dry and stable working environment for the exhaust gas monitoring equipment, which helps to extend the service life of the equipment and improve the accuracy and reliability of the monitoring data; at the same time, the dry environment can also reduce the risk of failure of electrical components inside the equipment due to moisture. Compared with the existing technology, it avoids the impact on the environment caused by the frequent replacement of desiccants that may generate solid waste. Moreover, the utility model does not adopt the form of uniformly mixed desiccants, and will not be greatly reduced due to excessively high or low environmental humidity. It can maintain an efficient and stable operating state under various environmental conditions, with a compact structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the explosion structure of the exhaust gas monitoring and protection device of the utility model;

[0035] Figure 2 This is a schematic diagram of the overall structure of the exhaust gas monitoring and protection device of the utility model;

[0036] Figure 3 This is a partial schematic diagram of the exhaust gas monitoring and protection device of the present utility model;

[0037] Figure 4 This is a schematic diagram of the structure of the exhaust hood part of the exhaust gas monitoring and protection device of the present utility model.

[0038] Among them, there are monitoring probe 1, exhaust gas monitoring controller 2, box body 3, connecting frame 4, partition net 41, bottom box 5, heating unit 6, electric heating seat 61, electric heating wire 62, exhaust unit 7, exhaust hood 71, exhaust strip hole 72, fan 73, temperature sensor 8, first temperature sensor 81, second temperature sensor 82, third temperature sensor 83, insulation board 9, insulation cavity 91, support plate 10, display screen 11, support seat 12, support rod 13, canopy 14, and box door 15. DETAILED DESCRIPTION

[0039] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended solely to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0040] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the drawings only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0041] This embodiment proposes an exhaust gas monitoring and protection device, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, it includes a monitoring box, a monitoring probe 1, and an exhaust gas monitoring controller 2 installed in the monitoring box, and the monitoring probe 1 extends out of the monitoring box. In this embodiment, the monitoring probe 1 is consistent with the dust monitoring probe in an exhaust gas monitoring device with moisture-proof function disclosed in Chinese Patent Publication No. CN217646145 U. The monitoring probe 1 continuously collects exhaust gas samples from the environment and transmits the collected data to the exhaust gas monitoring controller 2 for processing and analysis. When in use, the monitoring box is fixed in a position corresponding to the exhaust gas discharge, and the monitoring probe 1 is placed at the exhaust gas outlet. The monitoring probe 1 can be used to monitor the dust concentration in the exhaust gas discharged from the exhaust gas outlet.

[0042] In this embodiment, if Figure 1 、 Figure 2 and Figure 3As shown, the monitoring box includes a box body 3, a connecting frame 4 and a bottom box 5, and the box body 3 and the bottom box 5 are connected by the connecting frame 4; it also includes a main control module (not shown), a temperature sensor 8, a humidity sensor (not shown), a heating unit 6 and an exhaust unit 7, and the temperature sensor 8, the humidity sensor, the heating unit 6 and the exhaust unit 7 are respectively connected to the main control module for control;

[0043] The heating unit 6 is installed in the bottom box 5 and is used to heat the monitoring box. The exhaust unit 7 is installed on the top of the box 3 and is used to exhaust the gas inside the box 3. At the same time, the temperature sensor 8 and the humidity sensor continuously monitor the temperature and humidity data and feed this information back to the main control module. After receiving the temperature and humidity data, the main control module determines whether to initiate protective measures such as heating or exhaust according to preset standards and thresholds. If the humidity inside the box 3 is detected to be too high, the main control module will control the heating unit 6 to activate. When activated, it will increase the temperature inside the box 3 and heat the bottom box 5 at the bottom of the box 3 to reduce the humidity, prevent condensation and corrosion, and thus reduce the impact of moisture.

[0044] As a preferred embodiment, Figure 2 As shown, the temperature sensor 8 includes a first temperature sensor 81, a second temperature sensor 82 and a third temperature sensor 83. The first temperature sensor 81 and the second temperature sensor 82 are arranged on the inner wall of the box body 3 for monitoring the temperature inside the box body 3, and the first temperature sensor 81 and the second temperature sensor 82 are arranged at intervals; the third temperature sensor 83 is arranged on the outer wall of the box body 3 for monitoring the temperature outside the box body 3.

[0045] According to the above technical solution, the first temperature sensor 81 and the second temperature sensor 82 are installed on the inner wall of the box 3, and the two are arranged at intervals to obtain temperature data at different positions in the box 3. When the main control module simultaneously collects the temperature data of the first temperature sensor 81 and the second temperature sensor 82, and the difference between the two temperature data is less than the threshold, the average temperature of the first temperature sensor 81 and the second temperature sensor 82 is used as the temperature data inside the box 3 to reflect the distribution of the temperature inside the box 3; the third temperature sensor 83 is installed on the outer wall of the box 3 to monitor the ambient temperature outside the box 3; of course, it can be understood that there can be multiple third temperature sensors 83. When there are multiple third temperature sensors 83, the average value of the multiple third temperature sensors 83 is used to monitor the ambient temperature outside the box 3.

[0046] The humidity sensor is detachably mounted on the inner wall of the box 3 (e.g., by bolting, gluing, etc.). The humidity sensor, the first temperature sensor 81, the second temperature sensor 82, and the third temperature sensor 83 are electrically connected to the main control module, and transmit the real-time measured temperature data to the main control module for processing. After receiving the temperature data, the main control module will perform a comparative analysis to determine the temperature difference and change trend inside and outside the box 3. Based on this data, the main control module can adjust the working state of the heating unit 6 to ensure that the temperature and humidity inside the box 3 remain within an appropriate range. For example, when the humidity sensor detects that the humidity inside the box 3 is too high, the main control module can control the heating unit 6 to start or increase the power to reduce the humidity of the box 3; conversely, the main control module can control the heating unit 6 to reduce the power or turn off the heating unit 6 to prevent overheating. Through continuous monitoring and adjustment, the system can maintain a relatively stable temperature environment inside the box 3.

[0047] like Figure 1 As shown, a partition net 41 is installed in the connection frame 4, and an insulation board 9 is laid on the partition net 41. The insulation board 9 is provided with at least two insulation cavities 91. The installation of the partition net 41 can support and fix the insulation board 9, while allowing hot air to circulate to a certain extent. The partition net 41 can be firmly installed in the connection frame 4 by welding, screwing or other suitable methods to ensure its stability and load-bearing capacity. A layer of insulation board 9 is laid on top of the partition net 41. When the heating unit 6 is started, the insulation board 9 is used to reduce the heat exchange between the inside and outside of the box 3, thereby maintaining the temperature inside the box 3 stable, and can achieve the purpose of dehumidification to a certain extent. In one possible embodiment, the insulation cavity 91 can also be used to install a rock wool board to reduce the thermal bridge effect.

[0048] Further, if Figure 1 As shown, a support plate 10 is connected to the connection frame 4. When the connection frame 4 is installed at the bottom of the housing 3, the support plate 10 is located inside the housing 3 and is provided with several ventilation holes. The support plate 10 is detachably connected to the connection frame 4 using screws, snaps, or other quick-connect mechanisms. The exhaust gas monitoring controller 2 is detachably mounted on the support plate 10 and supports it. A display screen 11 is also provided on one side of the housing 3 and is connected to the exhaust gas monitoring controller 2.

[0049] According to the above technical solution, the support plate 10 not only provides a stable platform for placing the exhaust gas monitoring controller 2, but also helps moisture diffuse through the air holes thereon to achieve the purpose of drying; a display screen 11 is set on the box body 3, and the display screen 11 is connected to the exhaust gas monitoring controller 2. The display screen 11 can display the data collected and analyzed by the exhaust gas monitoring controller 2 in real time, which is convenient for observation.

[0050] As a preferred embodiment, the heating unit 6 includes an electric heating seat 61 and an electric heating wire 62 mounted within the bottom box 5. The electric heating seat 61 is electrically connected to the electric heating wire 62, which is in turn controlled by the main control module. When the main control module issues a command, the electric heating seat 61 is energized, causing the electric heating wire 62 to generate heat. As the electric heating wire 62 heats, the temperature of the bottom box 5 and the entire interior of the box 3 gradually rises. The warm air can carry more water vapor to evaporate, thereby reducing the relative humidity of the air. When the temperature rises to a certain level, the moisture on the inner wall of the box 3 and the internal air will evaporate faster, accelerating the discharge of moisture.

[0051] As a preferred embodiment, Figure 3 and Figure 4 As shown, the exhaust unit 7 includes an exhaust hood 71 and at least one fan 73. The exhaust hood 71 is detachably mounted on the top of the box body 3. A plurality of exhaust strip holes 72 are provided on the top of the exhaust hood 71. Each fan 73 is detachably mounted on the exhaust hood 71. The exhaust hood 71 is designed to be detachable for easy installation, cleaning and maintenance. The exhaust hood 71 is detachably mounted on the top of the box body 3 by a suitable connection method (such as screws, snaps, etc.), which ensures the stability of the exhaust hood 71 and facilitates replacement or maintenance when necessary. A plurality of exhaust strip holes 72 are provided on the top of the exhaust hood 71. These exhaust strip holes 72 are designed to effectively discharge exhaust gas or moisture from the inside of the box body 3 while preventing external debris from entering the box body 3.

[0052] Furthermore, a canopy 14 and two support bases 12 are provided on the top of the box body 3 , and the two support bases 12 are respectively provided on both sides of the exhaust hood 71 ; a support rod 13 is respectively provided in each support base 12 , and the two support rods 13 are connected to the canopy 14 .

[0053] According to the above technical solution, the canopy 14 is installed on the top of the box body 3 to block rain, sunlight and other natural elements, and protect the exhaust hood 71 and the fan 73 below from damage. Two support bases 12 are respectively arranged on both sides of the exhaust hood 71 to support and fix the canopy 14. Specifically, the support base 12 can be installed on the top of the box body 3 by welding, screwing or other secure means. In one possible embodiment, a telescopic mechanism (such as a telescopic rod) is designed inside the support base 12 to allow the telescopic adjustment of the support rod 13. The two support rods 13 are respectively arranged in the two support bases 12, one end of the support rod 13 is connected to the telescopic mechanism in the support base 12, and the other end is connected to the canopy 14, playing the role of supporting the canopy 14; by adjusting the telescopic length of the support rod 13, it can adapt to installation requirements of different heights and angles.

[0054] As a preferred embodiment, Figure 1 、 Figure 2 and Figure 3As shown, doors 15 are provided on both sides of the box body 3, and the two doors 15 are installed on the box body 3 in an openable and closable manner. The provision of the doors 15 allows the staff to easily open the box body 3 to maintain, inspect or replace the exhaust gas monitoring equipment inside, thereby improving the maintainability and ease of use of the equipment. When necessary, the doors 15 can also be opened to increase the ventilation of the box body 3, which helps to dissipate heat from the equipment. At the same time, the design of the doors 15 also provides convenience for possible future equipment upgrades or expansions, adding or removing equipment to meet ever-changing needs.

[0055] The present invention effectively controls the humidity inside the monitoring box through the effective coordination of the heating unit 6 and the exhaust unit 7. The heating unit 6 generates heat through the electric heating seat 61 and the electric heating wire 62, raising the temperature inside the monitoring box, thereby reducing the impact of moisture on the equipment, reducing the relative humidity of the air, and effectively preventing the equipment from malfunctioning or being damaged due to excessive humidity. By installing a humidity sensor inside the monitoring box 3, the humidity level inside the box 3 can be monitored in real time and the data can be transmitted to the main control module. The main control module controls the start and stop of the heating unit 6 according to the preset humidity threshold, thereby ensuring the dryness of the box 3 and providing a dry and stable working environment. This helps to extend the service life of the equipment, improve the accuracy and reliability of the monitoring data, and reduce the risk of malfunction of the electrical components inside the equipment due to moisture. Compared with the prior art, which avoids the frequent replacement of desiccant, the present invention does not use the method of uniformly mixing desiccant for dehumidification, and will not be greatly reduced due to excessively high or low ambient humidity. It can maintain an efficient and stable operating state under various environmental conditions, with a compact structure and strong practicality.

[0056] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by those skilled in the art based on the present invention shall fall within the protection scope of the present invention.

Claims

1. An exhaust gas monitoring and protection device, comprising a monitoring box, a monitoring probe (1), and an exhaust gas monitoring controller (2) installed in the monitoring box, wherein the monitoring probe (1) extends out of the monitoring box, and is characterized in that: The monitoring box comprises a box body (3), a connecting frame (4) and a bottom box (5), wherein the box body (3) and the bottom box (5) are connected via the connecting frame (4); It also includes a main control module, a temperature sensor (8), a humidity sensor, a heating unit (6), and an exhaust unit (7), wherein the temperature sensor (8), the humidity sensor, the heating unit (6), and the exhaust unit (7) are respectively connected to the main control module for control; The heating unit (6) is installed in the bottom box (5) and is used to heat the box body (3); the exhaust unit (7) is installed on the top of the box body (3) and is used to exhaust the gas in the box body (3).

2. The exhaust gas monitoring and protection device according to claim 1, characterized in that: The temperature sensor (8) comprises a first temperature sensor (81), a second temperature sensor (82) and a third temperature sensor (83), wherein the first temperature sensor (81) and the second temperature sensor (82) are arranged on the inner side wall of the box (3) for monitoring the temperature inside the box (3), and the first temperature sensor (81) and the second temperature sensor (82) are arranged at intervals; The third temperature sensor (83) is arranged on the outer wall of the box (3) and is used to monitor the temperature outside the box (3).

3. The exhaust gas monitoring and protection device according to claim 2, characterized in that: A partition net (41) is installed in the connection frame (4), a heat preservation board (9) is laid on the partition net (41), and at least two heat preservation cavities (91) are opened on the heat preservation board (9).

4. The exhaust gas monitoring and protection device according to claim 3, characterized in that: The connection frame (4) is further detachably connected to a support plate (10); when the connection frame (4) is mounted on the bottom of the box body (3), the support plate (10) is located inside the box body (3), and a plurality of air holes are provided on the support plate (10).

5. The exhaust gas monitoring and protection device according to claim 4, characterized in that: The exhaust gas monitoring controller (2) is detachably mounted on the support plate (10), and the support plate (10) is used to support the exhaust gas monitoring controller (2); A display screen (11) is also provided on one side of the box body (3), and the display screen (11) is connected to the exhaust gas monitoring controller (2).

6. The exhaust gas monitoring and protection device according to claim 1, characterized in that: The humidity sensor is detachably mounted on the inner side wall of the box body (3).

7. The exhaust gas monitoring and protection device according to claim 1, characterized in that: The heating unit (6) comprises an electric heating seat (61) and an electric heating wire (62) installed in the bottom box (5), wherein the electric heating seat (61) is electrically connected to the electric heating wire (62); and the electric heating seat (61) is control-connected to the main control module.

8. The exhaust gas monitoring and protection device according to claim 7, characterized in that: The exhaust unit (7) comprises an exhaust hood (71) and at least one fan (73); the exhaust hood (71) is detachably mounted on the top of the box body (3); a plurality of exhaust strip holes (72) are provided on the top of the exhaust hood (71); and each fan (73) is detachably mounted on the exhaust hood (71).

9. The exhaust gas monitoring and protection device according to claim 8, characterized in that: A canopy (14) and two support seats (12) are provided on the top of the box body (3), and the two support seats (12) are respectively provided on both sides of the exhaust hood (71); a support rod (13) is respectively provided in each support seat (12) in a telescopic manner, and the two support rods (13) are connected to the canopy (14).

10. The exhaust gas monitoring and protection device according to any one of claims 1 to 9, characterized in that: Box doors (15) are provided on both sides of the box body (3), and the two box doors (15) are installed on the box body (3) in an openable and closable manner.

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