Isolation system and isolation method capable of isolating convection heat transfer inside and outside of large-section tunnel

Abstract

The present invention discloses an isolation system and an isolation method that can isolate the convective heat exchange inside and outside a large-section tunnel. The isolation system includes: an electrically connected general control system and an equipment monitoring system, an electrical box management and control system, a conveying control system, and an information acquisition system electrically connected to the equipment monitoring system, a hot air storage device electrically connected to the electrical box management and control system that can generate hot air and pressurize and store the hot air, an air pressure chamber connecting the hot air storage device and the tunnel, and an air duct device, a nozzle device, an air delivery duct, and a hot air outlet located in the tunnel. The isolation system or method of the present invention can isolate the convective heat exchange inside and outside a large-section tunnel, realize thermal insulation of large-section tunnels, meet the requirements for anti-freezing damage of high-speed railway tunnels in high-cold areas, and at the same time, greatly reduce power consumption, ensuring energy saving, safety, and comfort of high-speed railway operation.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel disease prevention and control devices in cold regions, and in particular to the technical field of an isolation system capable of isolating convective heat exchange inside and outside a large-section tunnel. Background Art

[0002] In severely cold regions, the construction and operation of large-section tunnels face complex geological conditions and harsh climatic environments. Among them, extremely low temperatures can cause adverse effects on tunnels, such as frost damage. Therefore, large-section tunnels in severely cold regions often require special design solutions to ensure stable temperatures inside the tunnel and normal operation of equipment. Common special design solutions include increasing thermal insulation and drainage measures, such as laying insulation materials such as polyurethane and rock wool on the surface of the tunnel lining or between the primary support and the secondary lining to reduce heat loss and reduce temperature fluctuations inside the tunnel; or strengthening the design of the tunnel drainage system, such as setting up deep-buried drainage ditches, insulation side ditches, waterproof layers and other facilities to reduce water evaporation and freezing inside the tunnel, ensure smooth drainage in the tunnel, and prevent groundwater from invading the cave and causing frost damage.

[0003] The aforementioned special design solutions, such as deep-buried drainage ditches, have the following drawbacks: In extremely low temperatures, the ditches can become blocked or even clogged due to ice formation, affecting the tunnel's normal drainage function. Furthermore, the ditches require regular cleaning and maintenance, which is highly susceptible to inclement weather and difficult to complete in extremely cold regions. Other special design solutions, such as the installation of thermal insulation materials, can affect ventilation within the tunnel, resulting in poor air flow and negatively impacting air quality. Furthermore, the installation of thermal insulation materials requires additional design and material costs, increasing the total cost of the tunnel project.

[0004] Other technical ideas that remain unrealized include installing industrial air curtains at tunnel entrances and exits to isolate convective heat transfer between the tunnel interior and exterior, thereby achieving thermal insulation. However, for large-cross-section tunnels, the spray distance often requires 10 meters, and the air velocity and air volume of a single air curtain cannot meet these requirements. Increasing the number of air curtains to achieve counter-blowing would waste energy at the intersection of airflows, resulting in significant electrical waste over long-term operation. Furthermore, the increased number of air curtains would significantly increase equipment maintenance costs. Summary of the Invention

[0005] In response to the defects of the existing technology, the purpose of the present invention is to propose a new isolation system and isolation method that can be applied to large-section tunnels. The isolation system can isolate the convective heat exchange inside and outside the large-section tunnel, realize thermal insulation of the large-section tunnel, and meet the requirements of anti-freezing damage of high-speed railway tunnels in cold areas. At the same time, the isolation system can form a stable thermal insulation layer at the entrance and exit of the tunnel and output high power while greatly reducing power consumption, ensuring energy saving, safety and comfort of high-speed railway operation.

[0006] The present invention first provides the following technical solutions:

[0007] An isolation system capable of isolating convection heat exchange inside and outside a large-section tunnel comprises: a general control system for unified management of the isolation system, an equipment monitoring system for real-time monitoring of changes in parameters and performance of each subsystem in the isolation system and providing feedback to the general control system and executing instructions of the general control system, a hot air storage device capable of generating hot air heated to a target temperature and pressurizing and storing the hot air, an air pressure chamber connecting the hot air storage device and the tunnel, an air duct device arranged on the inner wall of the tunnel for air circulation, and a plurality of nozzle devices arranged on the air duct device for ejecting air, which delivers the air after passing through the air pressure chamber to the air duct device and the nozzle device. An air duct, a plurality of hot air outlets connected to the nozzle device are arranged on the air duct, an electrical box control system that can remotely control the start and stop of the hot air storage device and the working parameters, a transmission control system that monitors and controls the air volume, wind speed and wind temperature of the hot air after further heating and pressurization in the air pressure chamber, an information collection system for collecting the wind speed and wind temperature of the hot air outlet, the ambient temperature inside and outside the tunnel, and the wind speed outside the tunnel, and a first temperature sensor located in the tunnel; wherein, the hot air storage device is located outside the tunnel, and includes a heating device that can heat natural wind to a target temperature, a heating device that can generate 3000-5000m 3 / h and a high-power fan with a large air volume of 25-40m / s and a high wind speed of 25-40m / s, a servo motor capable of adjusting the angle of the fan of the high-power fan, and a second temperature sensor and a wind speed sensor electrically connected to the equipment monitoring system; the electrical box management and control system can regulate the start and stop and working parameters of the high-power fan and the servo motor; the general control system is electrically connected to the equipment monitoring system, the equipment monitoring system is electrically connected to the electrical box management and control system, the conveying control system and the information acquisition system, and the electrical box management and control system is electrically connected to the hot air storage device.

[0008] According to some preferred embodiments of the present invention, the electrical box management and control system can also perform intelligent fault diagnosis on the high-power fan and the servo motor.

[0009] According to some preferred embodiments of the present invention, the hot air storage device is arranged outside the tunnel and 2 to 5 meters away from the tunnel.

[0010] According to some preferred embodiments of the present invention, the first temperature sensor is disposed in the tunnel at a distance of 2 to 5 meters from the tunnel entrance.

[0011] According to some preferred embodiments of the present invention, the air delivery duct is assembled from a plurality of assemblable duct units.

[0012] According to some preferred embodiments of the present invention, five of the nozzle devices and five of the hot air outlets are disposed on the lower side of each pipe unit.

[0013] According to some preferred embodiments of the present invention, the length of each of the pipeline units is 2-2.5 m, which may be equal or different.

[0014] According to some preferred embodiments of the present invention, the nozzle device is an elliptical nozzle, and the hot air outlet is an elliptical outlet.

[0015] According to some preferred embodiments of the present invention, the major axis of the elliptical air outlet is 0.4 m, the minor axis is 0.3 m, and the distance between the two hot air outlets is 0.1 m.

[0016] According to some preferred embodiments of the present invention, the air pressure chamber is in the shape of an ellipsoid.

[0017] The present invention further provides an isolation method using the above isolation system, which comprises:

[0018] S1 sets up the isolation system, wherein the hot air storage device is set 2 to 5 meters outside the tunnel entrance, the first temperature sensor is set 2 to 5 meters inside the tunnel entrance, and the air pressure chamber is set outside the tunnel;

[0019] S2 obtains the real-time temperature of the environment inside and outside the tunnel through the first temperature sensor and the second temperature sensor, and obtains the real-time wind speed outside the tunnel through the wind speed sensor, collects the real-time temperature information and real-time wind speed information through the information acquisition system, and feeds it back to the equipment monitoring system, and the equipment monitoring system further feeds back the real-time temperature information and real-time wind speed information to the general control system, and the general control system issues processing instructions to the equipment monitoring system according to the wind speed outside the tunnel, the temperature inside and outside the tunnel and the temperature difference, and the equipment monitoring system further regulates other subsystems to complete the processing instructions; the content of the processing instructions includes: when the temperature outside the tunnel is higher than 0°C, shut down the electrical box control system and the conveying control system system; when the temperature outside the tunnel is lower than 0°C and higher than -15°C, the electrical box management and control system and the conveying control system are turned on, and the control system operates at a low gear, that is, the wind speed at the hot air outlet is adjusted to 25-30m / s, the power of the high-power fan is 5kW, and the natural wind produced by the high-power fan is heated to 20-25°C; when the temperature outside the tunnel is lower than -15°C or the wind speed outside the tunnel is higher than 5m / s or the temperature inside the tunnel is lower than the temperature outside the tunnel, the electrical box management and control system and the conveying control system are turned on, and the control system operates at a high gear, that is, the wind speed at the hot air outlet is adjusted to 30-40m / s, the power of the high-power fan is 6kW, and the natural wind produced by the high-power fan is heated to 20-25°C;

[0020] S3 After the isolation system has been running at high speed for a certain period of time, the general control system issues a second processing instruction to the equipment monitoring system based on the new real-time temperature information and real-time wind speed information obtained, and the equipment monitoring system further controls other subsystems to complete the second processing instruction; the second processing instruction includes: if the current temperature outside the tunnel is higher than 0°C, the electrical box control system and the conveying control system are turned off; if the temperature outside the tunnel is lower than 0°C, higher than -15°C and the wind speed is lower than 5m / s and the temperature inside the tunnel is higher than the temperature outside the tunnel, the control system performs the low-speed operation; otherwise, the high-speed operation is continued until the temperature difference between the inside and outside of the tunnel reaches the set requirements.

[0021] According to some preferred embodiments of the present invention, in step S1, the air duct is arranged along the tunnel cross section at a distance of 15-25 cm from the tunnel lining surface.

[0022] According to some preferred embodiments of the present invention, the isolation method also includes: when the tunnel to which the isolation system is applied is a large-section tunnel with an entrance diameter greater than 10m, the general control system issues a third processing instruction to the equipment monitoring system, and the equipment monitoring system further controls other subsystems to complete the third processing instruction. The third processing instruction includes: the electrical box control system controls the blade angle of the high-power fan through the servo motor, so that the wind direction at the hot air outlet is horizontally deviated by 3-5° into the tunnel.

[0023] According to some preferred embodiments of the present invention, the isolation method also includes: when the nozzle device is also provided with a temperature sensor and a wind speed sensor electrically connected to the equipment monitoring system, namely, a nozzle temperature sensor and a nozzle wind speed sensor, if the general control system determines that the wind temperature obtained according to the nozzle temperature sensor and / or the wind speed obtained according to the nozzle wind speed sensor is not higher than 20% of the set wind temperature and / or wind speed value at the nozzle, the system is maintained to continue operating in the current operating mode; if it exceeds 20% of the set wind temperature and / or wind speed value at the nozzle, the general control system issues a fourth processing instruction to the equipment monitoring system, and the equipment monitoring system further controls other subsystems to complete the fourth processing instruction, and the fourth processing instruction includes: reducing the operating power of the heating device and / or high-power fan in the hot air storage device, so that the wind temperature and / or wind speed at the hot air outlet is lower than 20% of the set value.

[0024] According to some preferred embodiments of the present invention, the isolation method also includes: when the air pressure chamber is also provided with a heating device and a pressurizing device electrically connected to the equipment monitoring system, namely, an air pressure chamber heating device and a pressurizing device, and the nozzle device is also provided with the nozzle temperature sensor and the nozzle wind speed sensor, if the general control system determines that the wind temperature and / or the wind speed obtained according to the nozzle temperature sensor are lower than the required wind temperature and / or wind speed in the tunnel, a fifth processing instruction is issued to the equipment monitoring system, and the equipment monitoring system further controls the air pressure chamber heating device and the pressurizing device to complete the fifth processing instruction, and the fifth processing instruction includes: increasing the heating power of the air pressure chamber heating device and / or increasing the pressurizing power of the air pressure chamber pressurizing device, so that the wind temperature and wind speed at the hot air outlet are increased to the set value range.

[0025] According to some preferred embodiments of the present invention, an instant messaging tool is integrated into the equipment monitoring system. When abnormal wind temperature occurs in the isolation system and is fed back to the equipment monitoring system through the first and / or second temperature sensors, the equipment monitoring system sends fault information to the technician via the instant messaging tool.

[0026] The present invention has the following beneficial effects:

[0027] The isolation system or method of the present invention protects high-speed rail tunnels from freezing temperatures, enabling long-term stable train operation in cold regions and significantly extending the service life of tunnel facilities. Furthermore, an equipment monitoring system incorporated into the isolation system of the present invention monitors equipment parameters and environmental changes in real time, automatically controlling system startup and shutdown, and wind speed settings, significantly reducing electricity consumption and avoiding energy waste.

[0028] The isolation system of the present invention can eject a large amount of high-speed uniform airflow through a nozzle device, with the wind speed reaching up to 40m / s, which can fully cover the large cross-section of the tunnel entrance and exit, and play an excellent role in heat insulation and heat preservation. At the same time, it can improve the air flow in the tunnel, reduce fog and humidity, improve the driver's vision clarity, and further improve traffic safety.

[0029] The isolation system of the present invention can realize intelligent control and monitoring. For example, its opening or closing can be remotely controlled by the overall control system and the equipment monitoring system, which makes it convenient for maintenance personnel to carry out timely and convenient repairs on corresponding faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the connection structure of the isolation system in a specific embodiment;

[0031] Figure 2 Schematic diagram of the structure of the air delivery duct unit and the hot air outlet in a specific embodiment;

[0032] Figure 3 is a side view of an air duct unit in a specific embodiment;

[0033] Figure 4 Schematic diagram of the structure of the nozzle device in a specific embodiment;

[0034] Figure 5 FIG. 4 is a control flow chart of the isolation system in a specific implementation manner.

[0035] In the figure: 1- general control system, 2- equipment monitoring system, 3- electrical box control system, 4- conveying control system, 5- information acquisition system, 6- hot air storage device, 7- air pressure chamber, 8- temperature sensor, 9- wind speed sensor, 10- heating device, 11- high power fan, 12- servo motor, 13- air duct device, 14- nozzle device, 15- air supply pipeline, 16- hot air outlet. DETAILED DESCRIPTION

[0036] The present invention is described in detail below with reference to the embodiments and accompanying drawings. However, it should be understood that the embodiments and accompanying drawings are merely exemplary descriptions of the present invention and do not constitute any limitation on the scope of protection of the present invention. All reasonable variations and combinations within the scope of the inventive concept of the present invention fall within the scope of protection of the present invention.

[0037] Refer to the attached Figure 1-4 In some specific embodiments, the isolation system of the present invention includes: a general control system 1 for unified management of the isolation system, an equipment monitoring system 2 for real-time monitoring of changes in parameters and performance of each subsystem in the isolation system and providing feedback to the general control system 1 and executing instructions of the general control system, an electrical box control system 3 that can remotely control the start and stop and working parameters of the hot air storage device 6, a conveying control system 4 that monitors and controls the air volume, wind speed and wind temperature of the hot air that has been further heated and pressurized by the air pressure chamber 7, an information collection system 5 that collects information on the wind speed and wind temperature of the hot air outlet 16, the ambient temperature inside and outside the tunnel, and the wind speed outside the tunnel, a hot air storage device 6 that can generate hot air heated to a target temperature and store the hot air under pressure, and an air pressure chamber connecting the hot air storage device 6 and the tunnel. 7. An air duct device 13 provided on the inner wall of the tunnel for air circulation and a plurality of nozzle devices 14 provided on the air duct device 13 for ejecting air, an air delivery pipe 15 for delivering the air after passing through the air pressure chamber 7 to the air duct device 13 and the nozzle device 14, a plurality of hot air outlets 16 provided on the air delivery pipe 15 and in communication with the nozzle device 14, and a first temperature sensor located in the tunnel; wherein, the hot air storage device 6 is located outside the tunnel, the general control system 1 is electrically connected to the equipment monitoring system 2, the equipment monitoring system 2 is electrically connected to the electrical box control system 3, the transport control system 4 and the information collection system 5, and the electrical box control system 3 is electrically connected to the hot air storage device 6; the hot air storage device 6 includes a heating device 10 that can heat natural wind to a target temperature, a heating device 10 that can generate 3000-5000m 3 / h and a high-power fan 11 of natural wind with a high wind speed of 25-40m / s, a servo motor 12 that can adjust the angle of the fan of the high-power fan 11, and a second temperature sensor 8 and a wind speed sensor 9 electrically connected to the equipment monitoring system 2. The start and stop and working parameters of the high-power fan 11 and the servo motor 12 are specifically controlled by the electrical box control system 3.

[0038] In the above embodiment, the hot air stored in the hot air storage device 6 can be transported to different positions in the tunnel through the air duct device 13, and finally output by the nozzle device 14. The air pressure chamber 7 can adjust the temperature and wind pressure to meet the wind speed requirements for full coverage of large-section tunnels.

[0039] In this embodiment, the high-power fan 11 can generate natural wind with large air volume and high wind speed, and then the hot air of the target temperature can be obtained after being heated by the heating device 10. The servo motor 12 can accurately adjust the fan angle of the high-power fan 11 to meet the requirements of the wind speed and wind direction of the air outlet in different environments.

[0040] In this embodiment, the isolation system of the present invention can obtain real-time temperature data inside and outside the tunnel through a first temperature sensor located inside the tunnel and a second temperature sensor 8 located outside the tunnel, and transmit the temperature data to the equipment monitoring system 2. The equipment monitoring system 2 determines the temperature difference between the inside and outside of the tunnel. When the temperature inside the tunnel is higher than the temperature outside the tunnel, the equipment monitoring system 2 transmits a command to the electrical box control system 3, which controls the high-power fan 11 to draw natural air from the tunnel and heat it through the heating device 10. Conversely, when the temperature inside the tunnel is lower than the temperature outside the tunnel, the electrical box control system 3 controls the high-power fan 11 to draw natural air from outside the tunnel and heat it through the heating device 10. This method can reduce the power consumption of the heating device 10, thereby reducing electricity consumption.

[0041] In some preferred embodiments, the electrical box management and control system 3 can also perform intelligent fault diagnosis on the high-power fan 11 and its servo motor 12 .

[0042] In some preferred embodiments, the hot air storage device 6 is located 2 to 5 meters away from the tunnel. This preferred embodiment allows the second temperature sensor 8 and wind speed sensor 9 in the hot air storage device 6 to monitor the temperature and wind speed outside the tunnel, effectively eliminating the impact of traffic on these two parameters.

[0043] In some preferred embodiments, the first temperature sensor is disposed 2 to 5 meters inside the tunnel entrance to detect the ambient temperature inside the tunnel and enable the isolation system to more accurately determine the temperature difference between the inside and outside of the tunnel.

[0044] In some preferred embodiments, the air delivery duct 15 is assembled from a plurality of assemblable duct units, and the length of the air delivery duct 15 can be adjusted by adjusting the number of duct units.

[0045] More preferably, 5 nozzle devices 14 and 5 hot air outlets 16 are configured on the lower side of each pipe unit, which can further adjust the number and position of the hot air outlets by adjusting the number of pipe units to meet different air volume and wind speed requirements of the isolation system.

[0046] More preferably, the length of each pipeline unit is 2-2.5 m, which can be equal or unequal. The length of the entire air duct 15 can be adjusted through the pipeline units according to the actual situation of the large-section tunnel.

[0047] The material of the air delivery duct 15 is preferably a composite material with high strength and corrosion resistance.

[0048] In some preferred embodiments, the nozzle device 14 is an elliptical nozzle. This type of nozzle has uniform wind speed, is well matched with the cylindrical air duct 15, can maximize the use of materials, and is suitable for large-area coverage.

[0049] More preferably, the hot air outlet 16 connected to the elliptical nozzle is an elliptical outlet with a major axis of 0.4 m and a minor axis of 0.3 m, and the distance between the two hot air outlets 16 is 0.1 m.

[0050] In some preferred embodiments, the air pressure chamber 7 is in the shape of an ellipsoid to reduce the airflow resistance it encounters, lower wind resistance and energy, and make its internal stress distribution more uniform, reduce stress concentration, and improve the stability and bearing capacity of the structure.

[0051] In some preferred embodiments, the air duct device 13 uses thermal insulation materials to keep the hot air warm and insulate it, ensuring that the wind speed and temperature meet the requirements and reducing transmission losses.

[0052] In some preferred embodiments, the pressure chamber 7 is further provided with a heating and pressurizing device electrically connected to the equipment monitoring system 2, namely a pressure chamber heating device and a pressurizing device, so as to intelligently control the temperature and pressure of the hot air in the pressure chamber to meet the set requirements.

[0053] In some preferred embodiments, each nozzle device 14 is provided with a temperature sensor and a wind speed sensor electrically connected to the equipment monitoring system 2, namely, a nozzle temperature sensor and a nozzle wind speed sensor, so as to obtain the wind temperature and wind speed at the hot air outlet 16 which can be fed back to the equipment monitoring system 2 and the overall control system 1.

[0054] Further, see the attached Figure 5 In some preferred embodiments, the isolation method using the isolation system of the present invention includes:

[0055] S1 sets up the isolation system, wherein the hot air storage device 6 is set 2 to 5 meters outside the tunnel entrance, the first temperature sensor is set 2 to 5 meters inside the tunnel entrance, and the air pressure chamber 7 is set outside the tunnel entrance;

[0056] S2 obtains the real-time temperature of the environment inside and outside the tunnel through the first temperature sensor in the tunnel and the second temperature sensor 8 in the hot air storage device 6, and obtains the real-time wind speed outside the tunnel through the wind speed sensor 9 in the hot air storage device 6, collects the real-time temperature information and real-time wind speed information through the information acquisition system 5, and feeds it back to the equipment monitoring system 2, and the equipment monitoring system 2 further feeds back the real-time temperature information and real-time wind speed information to the general control system 1, and the general control system 1 issues a first processing instruction to the equipment monitoring system 2 according to the wind speed outside the tunnel, the temperature inside and outside the tunnel, and the temperature difference, and the equipment monitoring system 2 further controls other subsystems to complete the first processing instruction; the first processing instruction includes: when the temperature outside the tunnel is higher than 0°C, turn off the electrical box control system 3 and the conveying control system 4; when the temperature outside the tunnel is lower than 0°C and higher than -15°C, the electrical box control system 3 and the conveying control system 4 are turned on, and the control system operates at a low gear, that is, the wind speed at the hot air outlet 16 is adjusted to 25-30m / s, the power of the high-power fan 11 is 5kW, and the natural wind produced by the high-power fan 11 is heated to 20-25°C; when the temperature outside the tunnel is lower than -15°C or the wind speed outside the tunnel is higher than 5m / s or the temperature inside the tunnel is lower than the temperature outside the tunnel, the electrical box control system 3 and the conveying control system 4 are turned on, and the control system operates at a high gear, that is, the wind speed at the hot air outlet 16 is adjusted to 30-40m / s, the power of the high-power fan 11 is 6kW, and the natural wind produced by the high-power fan 11 is heated to 20-25°C;

[0057] S3 After the isolation system has been running at high speed for a certain period of time, the main control system 1 issues a second processing instruction to the equipment monitoring system 2 based on the new real-time temperature information and real-time wind speed information obtained, and the equipment monitoring system 2 further controls other subsystems to complete the second processing instruction; the second processing instruction includes: if the current temperature outside the tunnel is higher than 0°C, the electrical box control system 3 and the conveying control system 4 are turned off, and the equipment stops running; if the temperature outside the tunnel is lower than 0°C, higher than -15°C, the wind speed is lower than 5m / s, and the temperature inside the tunnel is higher than the temperature outside the tunnel, the control system performs the low-speed operation, otherwise it continues to operate at high speed until the temperature difference between the inside and outside of the tunnel reaches the set requirements.

[0058] In the above embodiment, the hot air outlet 16 can achieve the target wind speed, wind pressure, wind temperature and other parameters by calculating the start and stop status and operating parameters of each device in the system under the target parameters through a control algorithm and adjusting the corresponding start and stop status and operating parameters.

[0059] In the above embodiment, the overall control system 1 issues processing instructions which can be achieved through one or more methods including automatic program control, on-site manual control (such as on-site operators manually starting and stopping the electrical box control system and the conveying control system or adjusting the operating parameters of the two systems according to the requirements of the overall control system), and remote control (such as through regulation in a remote device via a remote control module installed in the overall control system).

[0060] In some preferred embodiments, the isolation method further comprises:

[0061] When the tunnel to which the isolation system is applied is a large-section tunnel with an entrance diameter greater than 10m, the general control system 1 issues a third processing instruction to the equipment monitoring system 2, and the equipment monitoring system 2 further regulates other subsystems to complete the third processing instruction. The third processing instruction includes: the electrical box control system 3 regulates the fan blade angle of the high-power fan 11 through the servo motor 12, so that the wind direction of the hot air outlet 16 is horizontally deflected by 3-5° toward the tunnel, so as to reduce the blind spots and poor ventilation of the isolation treatment.

[0062] Preferably, the electrical box control system 3 and the servo motor 12 transmit instructions via pulse signals.

[0063] In some preferred embodiments, when the nozzle device 14 is provided with a temperature sensor and a wind speed sensor, the isolation method further includes: when the overall control system 1 determines that the wind temperature and / or wind speed obtained according to the nozzle temperature sensor is not higher than 20% of the set wind temperature and / or wind speed value at the nozzle, the system maintains its current operating mode; if it exceeds 20% of the set wind temperature and / or wind speed value at the nozzle, the overall control system 1 issues a fourth processing instruction to the equipment monitoring system 2, and the equipment monitoring system 2 further regulates other subsystems to complete the fourth processing instruction, and the fourth processing instruction includes: reducing the operating power of the heating device 10 and / or the high-power fan 11 in the hot air storage device 6, so that the wind temperature and / or wind speed output by the hot air outlet 16 is lower than 20% of the set value.

[0064] In some preferred embodiments, when the air pressure chamber is provided with an air pressure chamber heating device and a pressurizing device, and the nozzle device 14 is provided with a temperature sensor and a wind speed sensor, the isolation method further includes: when the general control system 1 determines that the wind temperature and / or the wind speed obtained according to the nozzle temperature sensor are lower than the required wind temperature and / or wind speed in the tunnel, a fifth processing instruction is issued to the equipment monitoring system 2, and the equipment monitoring system further regulates the air pressure chamber heating device and the pressurizing device to complete the fifth processing instruction. The fifth processing instruction includes: increasing the heating power of the air pressure chamber heating device and / or increasing the pressurizing power of the air pressure chamber pressurizing device, so that the wind temperature and wind speed at the hot air outlet 16 are increased to the set value range.

[0065] In some preferred embodiments, in step S1, the air duct 15 of the isolation system is set along the tunnel cross section at 15-25 cm from the tunnel lining surface, so that the heated and pressurized natural wind is radially ejected from the hot air outlet 16 along the tunnel cross section.

[0066] In some preferred embodiments, an instant messaging tool is integrated into the equipment monitoring system 2. When an abnormal wind temperature occurs in the isolation system and is fed back to the equipment monitoring system 2 through the temperature sensor, the equipment monitoring system 2 sends the fault information to the technician through the instant messaging tool, so that the technician can understand the situation and solve the fault problem as soon as possible.

[0067] The above embodiments are merely preferred embodiments of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of protection of the present invention are within the scope of protection of the present invention. It should be noted that improvements and modifications that can be made by a person skilled in the art without departing from the principles of the present invention are also considered to be within the scope of protection of the present invention.

Claims

1. An isolation system capable of isolating convection heat transfer inside and outside a large-section tunnel, characterized by: It includes: A general control system for unified management of the isolation system, a device monitoring system that monitors changes in parameters and performance of each subsystem in the isolation system in real time and provides feedback to the general control system and executes instructions from the general control system, a hot air storage device that can generate hot air heated to a target temperature and store the hot air under pressure, an air pressure chamber connecting the hot air storage device and the tunnel, an air duct device arranged on the inner wall of the tunnel for air circulation and a plurality of nozzle devices arranged on the air duct device for ejecting air, an air supply duct that transports the air after passing through the air pressure chamber to the air duct device and the nozzle device, a plurality of hot air outlets arranged on the air supply duct and connected to the nozzle device, an electrical box control system that can remotely control the start and stop and working parameters of the hot air storage device, a transport control system that monitors and controls the air volume, air speed and air temperature of the hot air that has been further heated and pressurized by the air pressure chamber, and controls the hot air outlet An information collection system for collecting wind speed and wind temperature at the tunnel entrance, as well as the ambient temperature inside and outside the tunnel and the wind speed information outside the tunnel, and a first temperature sensor located inside the tunnel; wherein the hot air storage device is located outside the tunnel, and includes a heating device that can heat natural wind to a target temperature, a high-power fan that can generate a large air volume of 3000-5000m³ / h and a high-speed natural wind of 25-40m / s, a servo motor that can adjust the fan angle of the high-power fan, and a second temperature sensor and a wind speed sensor electrically connected to the equipment monitoring system, the electrical box management and control system can regulate the start and stop and working parameters of the high-power fan and the servo motor; the general control system is electrically connected to the equipment monitoring system, the equipment monitoring system is electrically connected to the electrical box management and control system, the conveying control system and the information collection system, and the electrical box management and control system is electrically connected to the hot air storage device.

2. The isolation system according to claim 1, characterized in that The electrical box control system can also perform intelligent fault diagnosis on the high-power fan and the servo motor.

3. The isolation system according to claim 1, wherein: The hot air storage device is arranged outside the tunnel, 2 to 5 meters away from the tunnel, and / or the first temperature sensor is arranged inside the tunnel, 2 to 5 meters away from the tunnel entrance.

4. The isolation system according to claim 1, wherein: The air delivery duct is assembled from a plurality of assembleable duct units.

5. The isolation system according to claim 4, characterized in that Five nozzle devices and five hot air outlets are arranged on the lower side of each pipe unit.

6. The isolation system according to claim 4, characterized in that The length of each of the pipeline units is 2-2.5 m.

7. The isolation system according to claim 1, characterized in that The nozzle device is an elliptical nozzle, and the hot air outlet is an elliptical outlet.

8. The isolation system according to claim 7, characterized in that The major axis of the elliptical air outlet is 0.4m, the minor axis is 0.3m, and the distance between the two hot air outlets is 0.1m.

9. The isolation system according to claim 1, wherein: The air pressure chamber is in the shape of an ellipsoid.

10. An isolation method using the isolation system according to any one of claims 1 to 9, characterized in that: It includes: S1: Setting up the isolation system, wherein the hot air storage device is set 2-5 m outside the tunnel entrance, the first temperature sensor is set 2-5 m inside the tunnel entrance, and the air pressure chamber is set outside the tunnel; S2 obtains the real-time temperature of the environment inside and outside the tunnel through the first temperature sensor and the second temperature sensor, and obtains the real-time wind speed outside the tunnel through the wind speed sensor, collects the real-time temperature information and real-time wind speed information through the information acquisition system, and feeds it back to the equipment monitoring system, and the equipment monitoring system further feeds back the real-time temperature information and real-time wind speed information to the general control system, and the general control system issues processing instructions to the equipment monitoring system according to the wind speed outside the tunnel, the temperature inside and outside the tunnel, and the temperature difference, and the equipment monitoring system further controls other subsystems to complete the processing instructions; the content of the processing instructions includes: when the temperature outside the tunnel is higher than 0°C, shut down the electrical box control system and the conveying control system ; When the temperature outside the tunnel is lower than 0°C and higher than -15°C, the electrical box management and control system and the conveying control system are turned on, and the control system operates at a low gear, that is, the wind speed at the hot air outlet is adjusted to 25-30m / s, the power of the high-power fan is 5kW, and the natural wind produced by the high-power fan is heated to 20-25°C; when the temperature outside the tunnel is lower than -15°C or the wind speed outside the tunnel is higher than 5m / s or the temperature inside the tunnel is lower than the temperature outside the tunnel, the electrical box management and control system and the conveying control system are turned on, and the control system operates at a high gear, that is, the wind speed at the hot air outlet is adjusted to 30-40m / s, the power of the high-power fan is 6kW, and the natural wind produced by the high-power fan is heated to 20-25°C; S3 After the isolation system has been running at high speed for a certain period of time, the general control system issues a second processing instruction to the equipment monitoring system based on the new real-time temperature information and real-time wind speed information obtained, and the equipment monitoring system further controls other subsystems to complete the second processing instruction; the second processing instruction includes: if the current temperature outside the tunnel is higher than 0°C, the electrical box control system and the conveying control system are turned off; if the temperature outside the tunnel is lower than 0°C, higher than -15°C and the wind speed is lower than 5m / s and the temperature inside the tunnel is higher than the temperature outside the tunnel, the control system performs the low-speed operation; otherwise, the high-speed operation is continued until the temperature difference between the inside and outside of the tunnel reaches the set requirements.

11. The isolation method according to claim 10, characterized in that: In step S1, the air duct is arranged along the tunnel cross section at a distance of 15-25 cm from the tunnel lining surface.

12. The isolation method according to claim 10, characterized in that: The isolation method further comprises: When the tunnel to which the isolation system is applied is a large-section tunnel with an entrance diameter greater than 10m, the general control system issues a third processing instruction to the equipment monitoring system, and the equipment monitoring system further controls other subsystems to complete the third processing instruction. The third processing instruction includes: the electrical box control system controls the blade angle of the high-power fan through the servo motor, so that the wind direction at the hot air outlet is horizontally deflected by 3-5 degrees toward the tunnel; and / or, When the nozzle device is further provided with a temperature sensor and a wind speed sensor electrically connected to the equipment monitoring system, namely, a nozzle temperature sensor and a nozzle wind speed sensor, if the overall control system determines that the wind temperature obtained according to the nozzle temperature sensor and / or the wind speed obtained according to the nozzle wind speed sensor is not higher than 20% of the set wind temperature and / or wind speed value at the nozzle, the system is maintained to continue operating in the current operating mode; if it exceeds 20% of the set wind temperature and / or wind speed value at the nozzle, the overall control system issues a fourth processing instruction to the equipment monitoring system, and the equipment monitoring system further regulates other subsystems to complete the fourth processing instruction, the fourth processing instruction including: reducing the operating power of the heating device and / or the high-power fan in the hot air storage device, so that the wind temperature and / or wind speed at the hot air outlet is lower than 20% of the set value; and / or, When the pressure chamber is also provided with a heating device and a pressurizing device electrically connected to the equipment monitoring system, namely, the pressure chamber heating device and the pressurizing device, and the nozzle device is also provided with the nozzle temperature sensor and the nozzle wind speed sensor, if the general control system determines that the wind temperature and / or the wind speed obtained according to the nozzle temperature sensor are lower than the required wind temperature and / or wind speed in the tunnel, a fifth processing instruction is issued to the equipment monitoring system, and the equipment monitoring system further controls the pressure chamber heating device and the pressurizing device to complete the fifth processing instruction. The fifth processing instruction includes: increasing the heating power of the pressure chamber heating device and / or increasing the pressurizing power of the pressure chamber pressurizing device, so that the wind temperature and wind speed at the hot air outlet are increased to the set value range.

13. The isolation method according to claim 10, characterized in that: The equipment monitoring system is integrated with an instant messaging tool. When the isolation system has abnormal air temperature and the temperature is fed back to the equipment monitoring system through the first and / or second temperature sensors, the equipment monitoring system sends fault information to the technician via the instant messaging tool.

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