A subway construction electrical safety warning system

Abstract

This invention discloses a safety warning system for electricity use in subway construction, belonging to the technical field of subway construction. It includes a sensing module, a first fire extinguishing module, a second fire extinguishing module, and a third fire extinguishing module. The sensing module includes a first flame sensor and a second flame sensor. The first flame sensor is installed in the power distribution room to detect flames inside the room, and the second flame sensor is installed in the construction tunnel to detect flames inside the tunnel. The first fire extinguishing module is installed in the power distribution room to extinguish flames inside the room and is electrically connected to the first flame sensor. The second fire extinguishing module is installed in the construction tunnel to extinguish flames at the location of the connecting lines. The third fire extinguishing module is installed in the construction tunnel to extinguish flames inside the tunnel. This application has the effect of facilitating rapid fire extinguishing at the fire location and improving fire extinguishing efficiency.

Description

Technical Field

[0001] This invention relates to the field of subway construction, and in particular to a safety warning system for electricity use in subway construction. Background Technology

[0002] During subway construction, the power system is crucial for driving the operation of various construction equipment and tools. However, due to the complexity of the construction environment and the diversity of electrical equipment, the risk of electrical accidents also increases. Installing an electrical safety warning system facilitates real-time monitoring of the power operation status within the subway construction area, enabling timely detection and early warning of potential electrical faults, thereby effectively preventing electrical accidents.

[0003] The power system typically includes a distribution room and connecting lines. The distribution room connects to the construction tunnel and houses the power distribution equipment. The connecting lines are used to connect to other power equipment. During construction, some connecting lines are installed close to the inner walls of the subway construction site. Safety warning systems for the power system typically include flame sensors and audible and visual alarms. When the flame sensor detects a fire, the audible and visual alarms sound, and then relevant personnel use fire extinguishers to extinguish the fire.

[0004] Regarding the aforementioned technologies, manually extinguishing a fire with a fire extinguisher after the audible and visual alarm sounds is cumbersome and slow. Summary of the Invention

[0005] To facilitate rapid fire suppression and improve firefighting efficiency, this application provides a subway construction electrical safety warning system.

[0006] The technical solution of the subway construction electrical safety warning system provided in this application is as follows:

[0007] A subway construction electrical safety warning system includes a sensing module, a first fire extinguishing module, a second fire extinguishing module, and a third fire extinguishing module. The sensing module includes a first flame sensor and a second flame sensor. The first flame sensor is installed in the power distribution room to detect flames within the room, and the second flame sensor is installed in the construction tunnel to detect flames within the tunnel. The first fire extinguishing module is installed in the power distribution room to extinguish flames within the room and is electrically connected to the first flame sensor. The second fire extinguishing module is installed in the construction tunnel to extinguish flames at the location of the connecting lines. The third fire extinguishing module is installed in the construction tunnel to extinguish flames within the tunnel. Both the second and third fire extinguishing modules are electrically connected to the second flame sensor.

[0008] By adopting the above technical solution, when a fire occurs in the power distribution room, the first flame sensor senses the signal and transmits it to the first fire extinguishing module, thereby quickly extinguishing the fire in the power distribution room. When a fire occurs in the construction tunnel, the second flame sensor senses the signal and transmits it to the second and third fire extinguishing modules. Subsequently, the second and third fire extinguishing modules extinguish the fire in the construction tunnel, respectively, in areas near and far from the connecting lines. During the fire extinguishing process, there is no need to manually treat the fire with fire extinguishers. The fire in the construction tunnel can be extinguished by the first, second, and third fire extinguishing modules, which is convenient, fast, and improves fire extinguishing efficiency. Furthermore, different fire extinguishing methods can be used to extinguish fires in different areas, which helps to reduce the impact on the surrounding environment during the fire extinguishing process and has strong applicability.

[0009] Optionally, the first fire extinguishing module includes a gas fire extinguisher and a first solenoid valve. The first solenoid valve is used to open and close the output end of the gas fire extinguisher. The first solenoid valve is electrically connected to the first flame sensor through a controller.

[0010] By adopting the above technical solution, when a fire occurs in the power distribution room, the fire area in the power distribution room can be extinguished by a gas fire extinguisher. The installation of the gas fire extinguisher makes it less likely to damage the power distribution equipment during the fire extinguishing process, and no residue will be left after the fire is extinguished, which helps to reduce the recovery time and cost of the power distribution equipment after the fire is extinguished.

[0011] Optionally, the first fire extinguishing module further includes a fireproof roller shutter, which is used to open and close the connection port of the power distribution room. The bottom of the fireproof roller shutter has a clearance notch corresponding to the connection line.

[0012] By adopting the above technical solution, when a fire occurs in the power distribution room, the fireproof roller shutter facilitates the rapid sealing of the area inside the power distribution room, thereby further improving the fire extinguishing efficiency of gas fire extinguishers in extinguishing the fire in the power distribution room. In addition, the design of the clearance gap makes it less likely for the fireproof roller shutter to interfere with the connection lines, thus ensuring the stability of the connection lines.

[0013] Optionally, the second fire extinguishing module includes a fixed fire extinguishing base, a rotating fire extinguishing base, a dry powder fire extinguisher, a second solenoid valve, and a rotating fire extinguishing assembly. The fixed fire extinguishing base is fixedly installed on the inner wall of the construction tunnel. The rotating fire extinguishing base is rotatably installed on the fixed fire extinguishing base. The rotating fire extinguishing assembly is used to drive the rotating fire extinguishing base to rotate along the extension direction of the connecting line. The dry powder fire extinguisher is mounted on the rotating fire extinguishing base. The second solenoid valve is used to open and close the output end of the dry powder fire extinguisher. The second solenoid valve and the second flame sensor are electrically connected through a controller.

[0014] By adopting the above technical solution, after a fire breaks out in the area near the connecting line, the fire extinguishing rotating assembly drives the fire extinguishing rotating seat to rotate, so that the dry powder fire extinguisher rotates with the fire extinguishing rotating seat to the fire area. Then, the second solenoid valve opens and the dry powder fire extinguisher is used to extinguish the fire in the area near the connecting line. Because the dry powder fire extinguisher is non-toxic, non-corrosive, and non-conductive, it is beneficial to ensure that the dry powder fire extinguisher can stably extinguish the fire in the area near the connecting line.

[0015] Optionally, the fire extinguishing rotating assembly includes a rotating motor, a rotating lead screw, a rotating slider, and a rotating drive rod. The rotating lead screw is horizontally rotatably mounted on the fire extinguishing fixed base. The rotating motor is mounted on the fire extinguishing fixed base and is used to drive the rotating lead screw to rotate. The rotating slider is slidably fitted onto the fire extinguishing fixed base. The rotating lead screw passes through the rotating slider and is threadedly fitted onto the rotating slider. The rotating drive rod is fixedly mounted on the rotating shaft of the fire extinguishing rotating base. The top of the rotating slider has a fire extinguishing drive groove, and the rotating drive rod is slidably fitted into the fire extinguishing drive groove.

[0016] By adopting the above technical solution, when the rotating motor drives the rotating screw to rotate, the rotating slider moves horizontally due to the threaded engagement with the rotating screw and the limiting action of the fire extinguishing fixed seat, thereby driving the rotating drive rod to slide in the fire extinguishing drive groove, and finally realizing the rotation of the fire extinguishing rotating seat. The setting of the rotating screw helps to fully ensure the stability of the position of the fire extinguishing rotating seat during and after rotation, which is convenient and fast.

[0017] Optionally, the rotating drive rod is rotatably mounted with a rotating bearing, which is rolled in the fire extinguishing drive groove.

[0018] By adopting the above technical solution, the setting of the rotating bearing makes the friction between the rotating drive rod and the wall of the fire extinguishing drive groove smaller during the rotation of the rotating slider driving the fire extinguishing rotating seat. The rotating drive rod is less likely to wear due to repeated friction, which helps to ensure the service life of the rotating drive rod.

[0019] Optionally, the third fire extinguishing module includes a fire extinguishing mounting base, a fire extinguishing mounting frame, a fire extinguishing nozzle, a third solenoid valve, and a fire extinguishing drive assembly. The fire extinguishing mounting base is fixedly installed on the inner wall of the construction tunnel. The fire extinguishing drive assembly is installed on the fire extinguishing mounting base and is used to drive the fire extinguishing mounting frame to rotate. The fire extinguishing nozzle is installed on the fire extinguishing mounting frame and is used to spray water towards the fire area. The third solenoid valve is installed on the fire extinguishing nozzle and is used to open and close the output end of the fire extinguishing nozzle. The third solenoid valve is electrically connected to the second flame sensor through a controller.

[0020] By adopting the above technical solution, after a fire breaks out in an area of ​​the construction tunnel far from the connecting line, the fire extinguishing drive component drives the fire extinguishing mounting frame to rotate. After the fire extinguishing nozzle rotates to the fire area, the third solenoid valve opens the fire extinguishing nozzle, and water is sprayed onto the fire area through the fire extinguishing nozzle to quickly and effectively prevent the spread of the fire. This helps to fully ensure the fire extinguishing efficiency in areas far from the connecting line.

[0021] Optionally, the fire extinguishing mounting bracket includes a first frame and a second frame. The first frame is rotatably mounted on the fire extinguishing mounting base about the x-axis, and the second frame is rotatably mounted on the first frame about the y-axis. The fire extinguishing nozzle is mounted on the second frame. The fire extinguishing drive assembly includes a first drive component and a second drive component. The first drive component is used to drive the first frame to rotate about the x-axis, and the second drive component is used to drive the second frame to rotate about the y-axis.

[0022] By adopting the above technical solution, when the first driving component and the second driving component drive the first frame and the second frame to rotate respectively, the fire extinguishing nozzles together adjust the rotation angle around the x-axis and y-axis, thereby facilitating the spraying of water to extinguish fires in more different locations, and making it highly applicable.

[0023] Optionally, the first driving component includes a first motor and a first driving wheel. The first driving wheel is coaxially fixedly mounted on the rotating shaft of the first frame, and the first motor is used to drive the first driving wheel to rotate. The second driving component includes a second motor, a second driving wheel, a driving bevel gear, and a driven bevel gear. The driven bevel gear is coaxially fixedly mounted on the rotating shaft of the second frame. The driving bevel gear meshes with the driven bevel gear and is rotatably mounted on the first frame. The second driving wheel is coaxially fixedly mounted on the driving bevel gear, and the second motor is used to drive the second driving wheel to rotate.

[0024] By adopting the above technical solution, when the first motor drives the first drive wheel to rotate, the first drive wheel drives the first frame to rotate; when the second motor drives the second drive wheel to rotate, the second drive wheel drives the second frame to rotate through the cooperation of the active bevel gear and the driven bevel gear. The arrangement of the first motor and the second motor makes the rotation of the first frame and the second frame convenient and fast.

[0025] Optionally, the first motor is mounted on the fire extinguishing mounting base, and a first drive wheel is fixedly mounted on the output end of the first motor. A first transmission belt is wound between the first drive wheel and the first driving wheel. The second motor is mounted on the fire extinguishing mounting base, and a second drive wheel is fixedly mounted on the output end of the second motor. A second transmission belt is wound between the second drive wheel and the second driving wheel. The first driving wheel and the second driving wheel are located on both sides of the first frame in the x-axis direction.

[0026] By adopting the above technical solution, the arrangement of the first transmission belt and the second transmission belt facilitates the adjustment of the installation positions of the first motor and the second motor, and enables the first motor and the second motor to stably drive the first frame and the second frame to rotate after the installation positions are adjusted. It has strong applicability. At the same time, the arrangement of the first drive wheel and the second drive wheel on both sides of the first frame in the x-axis direction helps to ensure the stability of the first frame and the second frame when rotating.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. During the fire extinguishing process, there is no need to manually treat the fire location with fire extinguishers. The fire can be extinguished in different locations in the construction tunnel by using the first, second and third fire extinguishing modules respectively. This is convenient, fast and improves the fire extinguishing efficiency. Different fire extinguishing methods can be used to extinguish different areas, which helps to reduce the impact on the surrounding environment during the fire extinguishing process. It has strong applicability.

[0029] 2. The installation of gas fire extinguishers makes it less likely to damage the power distribution equipment during the fire extinguishing process in the fire area of ​​the power distribution room, and leaves no residue after the fire is extinguished, which helps to reduce the time and cost of restoring the power distribution equipment after the fire is extinguished.

[0030] 3. After the dry powder fire extinguisher rotates to the fire area with the rotating base, the second solenoid valve opens and the dry powder fire extinguisher is used to extinguish the fire in the area near the connecting line. Due to the non-toxic, non-corrosive and non-conductive properties of the dry powder fire extinguisher, it is conducive to ensuring stable fire extinguishing in the area near the connecting line.

[0031] 4. After the fire extinguishing nozzle is rotated to the fire area, the fire extinguishing nozzle is opened through the third solenoid valve. The fire extinguishing nozzle sprays water on the fire area to quickly and effectively stop the spread of the fire, which helps to fully ensure the fire extinguishing efficiency for fire areas far away from the connecting lines. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0033] Figure 2 This is a schematic diagram of the main structure of the second fire extinguishing module in the embodiments of this application.

[0034] Figure 3 This is a schematic diagram of the main structure of the third fire extinguishing module in the embodiments of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. First flame sensor; 2. Second flame sensor; 3. Gas fire extinguisher; 4. First solenoid valve; 5. Fireproof roller shutter; 6. Clearance notch; 7. Power distribution room; 8. Fire extinguisher mounting base; 9. Fire extinguisher rotating base; 10. Dry powder fire extinguisher; 11. Second solenoid valve; 12. Rotating motor; 13. Rotating screw; 14. Rotating slider; 15. Rotating drive rod; 16. Rotating slide; 17. Fire extinguishing drive groove; 18. Rotating bearing; 19. Extinguishing... 20. Fire extinguishing mounting bracket; 201. First frame; 202. Second frame; 21. Fire extinguishing nozzle; 22. Third solenoid valve; 23. First motor; 24. First drive wheel; 25. First driving wheel; 26. First transmission belt; 27. Second motor; 28. Second drive wheel; 29. ​​Driving bevel gear; 30. Driven bevel gear; 31. Second driving wheel; 32. Second transmission belt; 33. Partition plate; 34. Connecting wiring. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0038] This application discloses a safety warning system for electricity use during subway construction. (Refer to...) Figure 1 The subway construction power safety warning system includes a sensing module, a first fire extinguishing module, a second fire extinguishing module, and a third fire extinguishing module. The sensing module includes a first flame sensor 1 and a second flame sensor 2. The first flame sensor 1 is installed in the power distribution room 7 and is used to detect flames in the power distribution room 7. The second flame sensor 2 is installed in the construction tunnel and is used to detect flames in the construction tunnel. In this embodiment, the extension direction of the construction tunnel is the x-axis direction, and the direction perpendicular to the construction tunnel is the y-axis direction.

[0039] Continue to refer to Figure 1 The first fire extinguishing module includes a gas fire extinguisher 3, a first solenoid valve 4, and a fireproof roller shutter 5. The fireproof roller shutter 5 is installed at the connection port of the power distribution room 7 to allow the fireproof shutter to open and close the connection port of the power distribution room 7. The bottom of the fireproof roller shutter 5 has a clearance notch 6 corresponding to the connecting line 34, so that when the fireproof roller shutter 5 closes the connection port of the power distribution room 7, it will not easily interfere with the connecting line 34, thereby helping to ensure the stability of the connecting line 34. After exiting the power distribution room 7, the connecting line 34 is close to the side wall of the construction tunnel and is arranged along the extension direction of the construction tunnel, i.e., the x-axis direction.

[0040] Continue to refer to Figure 1The gas fire extinguisher 3 is installed in the power distribution room 7. The first solenoid valve 4 is used to open and close the output end of the gas fire extinguisher 3. The first solenoid valve 4 is electrically connected to the first flame sensor 1 through a controller so that when a fire occurs in the power distribution room 7, the fireproof roller shutter 5 can quickly close the area inside the power distribution room 7. The opening of the first solenoid valve 4 allows the gas fire extinguisher 3 to extinguish the fire in the area inside the power distribution room 7. The setting of the gas fire extinguisher 3 to extinguish the fire makes it less likely to damage the power distribution equipment during the fire extinguishing process, and no residue will be left after the fire is extinguished, which helps to reduce the recovery time and cost of the power distribution equipment after the fire is extinguished.

[0041] Reference Figure 1 and Figure 2 The second fire extinguishing module includes a fire extinguishing fixed base 8, a fire extinguishing rotating base 9, a dry powder fire extinguisher 10, a second solenoid valve 11, and a fire extinguishing rotating assembly. The fire extinguishing fixed base 8 is fixedly installed on the inner wall of the top of the construction tunnel. The fire extinguishing rotating base 9 is mounted on the fire extinguishing fixed base 8 and rotates around the y-axis via a rotating shaft. The dry powder fire extinguisher 10 is mounted on the fire extinguishing rotating base 9. The second solenoid valve 11 is used to open and close the output end of the dry powder fire extinguisher 10, and the second solenoid valve 11 is electrically connected to the second flame sensor 2 via a controller. The fire extinguishing rotating assembly is used for... The fire extinguishing rotating seat 9 is driven to rotate along the extension direction of the connecting line 34, i.e., around the y-axis, so that when a fire breaks out in the area near the connecting line 34, the fire extinguishing rotating assembly drives the fire extinguishing rotating seat 9 to rotate to the fire area. Then, the second solenoid valve 11 is opened to extinguish the fire in the area near the connecting line 34 through the dry powder fire extinguisher 10. Since the dry powder fire extinguisher 10 is non-toxic, non-corrosive, and non-conductive, it is beneficial to ensure that the dry powder fire extinguisher 10 can stably extinguish the fire in the area near the connecting line 34.

[0042] Reference Figure 2 Specifically, the fire extinguishing rotating assembly includes a rotating motor 12, a rotating lead screw 13, a rotating slider 14, and a rotating drive rod 15. The rotating lead screw 13 is horizontally arranged along the x-axis and rotatably mounted on the fire extinguishing mounting base 8. The rotating motor 12 is mounted on the fire extinguishing mounting base 8 and is used to drive the rotating lead screw 13 to rotate. The rotating motor 12 is electrically connected to the second flame sensor 2 through a controller. The fire extinguishing mounting base 8 has a rotating groove 16 extending along the x-axis. The rotating slider 14 slides within the rotating groove 16. The rotating lead screw 13 passes through the rotating slider 14 and is threadedly engaged with the rotating slider 14. When the rotating motor 12 drives the rotating lead screw 13 to rotate, the rotating slider 14 moves along the x-axis within the rotating groove 16.

[0043] Continue to refer to Figure 2The top of the rotating slider 14 is provided with a fire extinguishing drive groove 17. The rotating drive rod 15 is fixedly installed on the rotating shaft of the fire extinguishing rotating seat 9. The rotating drive rod 15 is rotatably installed with a rotating bearing 18. The rotating bearing 18 is rolled in the fire extinguishing drive groove 17 so that when the rotating screw 13 rotates, the rotating slider 14 moves horizontally due to the threaded engagement with the rotating screw 13 and the limiting action of the fire extinguishing fixed seat 8. This causes the rotating shaft bearing to slide in the fire extinguishing drive groove 17, and finally drives the fire extinguishing rotating seat 9 to rotate through the rotating drive rod 15. The setting of the rotating screw helps to fully ensure the stability of the position of the fire extinguishing rotating seat 9 during and after rotation.

[0044] Reference Figure 1 and Figure 3 The third fire extinguishing module includes a fire extinguishing mounting base 19, a fire extinguishing mounting frame 20, a fire extinguishing nozzle 21, a third solenoid valve 22, and a fire extinguishing drive assembly. The fire extinguishing mounting base 19 is fixedly installed on the inner wall of the top of the construction tunnel. The fire extinguishing mounting frame 20 includes a first frame 201 and a second frame 202. Specifically, the first frame 201 is mounted on the fire extinguishing mounting base 19 by rotating around the x-axis via a pivot, and the second frame 202 is mounted on the first frame 201 by rotating around the y-axis via a pivot. The fire extinguishing drive assembly includes a first drive component and a second drive component, which drive the first frame 201 and the second frame 202 to rotate, respectively.

[0045] Continue to refer to Figure 1 and Figure 3 The first driving component includes a first motor 23 and a first driving wheel 24. The first driving wheel 24 is coaxially fixedly mounted on the rotating shaft of the first frame 201. The first motor 23 is mounted on the fire extinguishing mounting base 19. The output end of the first motor 23 is fixedly mounted with a first drive wheel 25. A first transmission belt 26 is wound between the first drive wheel 25 and the first driving wheel 24, so that the first motor 23 drives the first driving wheel 24 to rotate through the first drive wheel 25 and the first transmission belt 26, thereby ultimately realizing the rotation of the first frame 201 around the x-axis.

[0046] Reference Figure 3 The second driving component includes a second motor 27, a second driving wheel 28, a driving bevel gear 29, and a driven bevel gear 30. The driven bevel gear 30 is coaxially fixedly mounted on the rotating shaft of the second frame 202. The driving bevel gear 29 meshes with the driven bevel gear 30 and is rotatably mounted on the first frame 201 around the x-axis. The second driving wheel 28 is coaxially fixedly mounted on the driving bevel gear 29. The second driving wheel 28 and the first driving wheel 24 are located on both sides of the first frame 201 in the x-axis direction, respectively. The rotating shaft of the first frame 201 passes through and rotatably engages with the driving bevel gear 29 and the second driving wheel 28 to fully ensure the stability of the first frame 201 and the second frame 202 when rotating.

[0047] Reference Figure 1 and Figure 3 The second motor 27 is installed on the fire extinguishing mounting base 19. The output end of the second motor 27 is fixedly installed with the second drive wheel 31. The first motor 23 and the second motor 27 are both electrically connected to the second flame sensor 2 through the controller. A second transmission belt 32 is wound between the second drive wheel 31 and the second drive wheel 28 so that the second motor 27 drives the second drive wheel 28 to rotate through the second drive wheel 31 and the second transmission belt 32, and then drives the second frame 202 to rotate around the y-axis through the drive bevel gear 29 and the driven bevel gear 30.

[0048] Continue to refer to Figure 1 and Figure 3 Fire extinguishing nozzle 21 is installed on the second frame 202. When the first frame 201 rotates, the second frame 202 drives the fire extinguishing nozzle 21 to rotate together with the first frame 201 around the x-axis. The fire extinguishing nozzle 21 is connected to a water source through a hose so that when the output end of the fire extinguishing nozzle 21 is opened, it can spray water towards the fire area. The third solenoid valve 22 is installed on the fire extinguishing nozzle 21 and is used to open and close the output end of the fire extinguishing nozzle 21. The third solenoid valve 22 is electrically connected to the second flame sensor 2 through a controller. When a fire breaks out in an area of ​​the construction tunnel away from the connecting line 34, the first motor 23 and the second motor 27 drive the fire extinguishing nozzle 21 to rotate to the fire area, and the third solenoid valve 22 opens the fire extinguishing nozzle 21. Spraying water from the fire extinguishing nozzle 21 to the fire area facilitates rapid and effective prevention of the fire spread, which helps to fully ensure the fire extinguishing efficiency in areas far from the connecting line 34. To prevent the sprayed water from affecting the connecting line 34, a partition plate 33 is fixedly installed inside the construction tunnel along the x-axis to separate the positions close to and far from the connecting line 34.

[0049] The implementation principle of a subway construction electrical safety warning system according to an embodiment of this application is as follows: When a fire occurs in the power distribution room 7, the first flame sensor 1 senses the signal and transmits the signal to the first solenoid valve 4 of the first fire extinguishing module. After the fireproof roller shutter 5 closes the power distribution room 7, the gas fire extinguisher 3 of the first fire extinguishing module quickly extinguishes the fire in the fire area within the power distribution room 7. When a fire occurs in the construction tunnel, the second flame sensor 2 senses the signal and transmits the signal to the second and third fire extinguishing modules. When the fire source is located in the tunnel near the connecting line 34... When the fire source is located in the tunnel, the dry powder fire extinguisher 10 of the second fire extinguishing module can quickly extinguish the fire in the affected area. When the fire source is located in the tunnel far from the connecting line 34, the fire extinguishing nozzle 21 of the third fire extinguishing module can quickly extinguish the fire in the affected area. The fire can be extinguished in the construction tunnel by using the first, second, and third fire extinguishing modules respectively. This is convenient, fast, and improves fire extinguishing efficiency. Different fire extinguishing methods can be used to extinguish fires in different areas, which helps to reduce the impact on the surrounding environment during the fire extinguishing process. It is highly applicable.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A subway construction electrical safety warning system, characterized in that: The system includes a sensing module, a first fire extinguishing module, a second fire extinguishing module, and a third fire extinguishing module. The sensing module includes a first flame sensor (1) and a second flame sensor (2). The first flame sensor (1) is installed in the power distribution room (7) and is used to detect flames in the power distribution room (7). The second flame sensor (2) is installed in the construction tunnel and is used to detect flames in the construction tunnel. The first fire extinguishing module is installed in the power distribution room (7) and is used to extinguish flames in the power distribution room (7). The first fire extinguishing module is electrically connected to the first flame sensor (1). The second fire extinguishing module is installed in the construction tunnel and is used to extinguish flames at the location of the connecting line (34). The third fire extinguishing module is installed in the construction tunnel and is used to extinguish flames in the construction tunnel. Both the second fire extinguishing module and the third fire extinguishing module are electrically connected to the second flame sensor (2). The first fire extinguishing module includes a gas fire extinguisher (3) and a first solenoid valve (4). The first solenoid valve (4) is used to open and close the output end of the gas fire extinguisher (3). The first solenoid valve (4) is electrically connected to the first flame sensor (1) through a controller. The first fire extinguishing module also includes a fireproof roller shutter (5), which is used to open and close the connection port of the power distribution room (7). The bottom of the fireproof roller shutter (5) is provided with a clearance notch (6) corresponding to the connection line (34). The second fire extinguishing module includes a fire extinguishing fixed base (8), a fire extinguishing rotating base (9), a dry powder fire extinguisher (10), a second solenoid valve (11), and a fire extinguishing rotating assembly. The fire extinguishing fixed base (8) is fixedly installed on the inner wall of the construction tunnel. The fire extinguishing rotating base (9) is rotatably installed on the fire extinguishing fixed base (8). The fire extinguishing rotating assembly is used to drive the fire extinguishing rotating base (9) to rotate along the extension direction of the connecting line (34). The dry powder fire extinguisher (10) is installed on the fire extinguishing rotating base (9). The second solenoid valve (11) is used to open and close the output end of the dry powder fire extinguisher (10). The second solenoid valve (11) is electrically connected to the second flame sensor (2) through a controller. The fire extinguishing rotating assembly includes a rotating motor (12), a rotating lead screw (13), a rotating slider (14), and a rotating drive rod (15). The rotating lead screw (13) is horizontally rotatably mounted on the fire extinguishing fixed base (8). The rotating motor (12) is mounted on the fire extinguishing fixed base (8) and is used to drive the rotating lead screw (13) to rotate. The rotating slider (14) is slidably fitted to the fire extinguishing fixed base (8). The rotating lead screw (13) passes through the rotating slider (14) and is threadedly fitted to the rotating slider (14). The rotating drive rod (15) is fixedly mounted on the rotating shaft of the fire extinguishing rotating base (9). The top of the rotating slider (14) is provided with a fire extinguishing drive groove (17). The rotating drive rod (15) is slidably fitted in the fire extinguishing drive groove (17).

2. The subway construction electrical safety warning system according to claim 1, characterized in that: The rotating drive rod (15) is rotatably mounted with a rotating bearing (18), which is rolled in the fire extinguishing drive groove (17).

3. The subway construction electrical safety warning system according to claim 1, characterized in that: The third fire extinguishing module includes a fire extinguishing mounting base (19), a fire extinguishing mounting frame (20), a fire extinguishing nozzle (21), a third solenoid valve (22), and a fire extinguishing drive assembly. The fire extinguishing mounting base (19) is fixedly installed on the inner wall of the construction tunnel. The fire extinguishing drive assembly is installed on the fire extinguishing mounting base (19) and is used to drive the fire extinguishing mounting frame (20) to rotate. The fire extinguishing nozzle (21) is installed on the fire extinguishing mounting frame (20) and is used to spray water towards the fire area. The third solenoid valve (22) is installed on the fire extinguishing nozzle (21) and is used to open and close the output end of the fire extinguishing nozzle (21). The third solenoid valve (22) is electrically connected to the second flame sensor (2) through a controller.

4. A subway construction electrical safety warning system according to claim 3, characterized in that: The fire extinguishing mounting bracket (20) includes a first frame (201) and a second frame (202). The first frame (201) is rotatably mounted on the fire extinguishing mounting base (19) about the x-axis, and the second frame (202) is rotatably mounted on the first frame (201) about the y-axis. The fire extinguishing nozzle (21) is mounted on the second frame (202). The fire extinguishing drive assembly includes a first drive member and a second drive member. The first drive member is used to drive the first frame (201) to rotate about the x-axis, and the second drive member is used to drive the second frame (202) to rotate about the y-axis.

5. A subway construction electrical safety warning system according to claim 4, characterized in that: The first driving component includes a first motor (23) and a first driving wheel (24). The first driving wheel (24) is coaxially fixedly mounted on the shaft of the first frame (201). The first motor (23) is used to drive the first driving wheel (24) to rotate. The second driving component includes a second motor (27), a second driving wheel (28), a driving bevel gear (29), and a driven bevel gear (30). The driven bevel gear (30) is coaxially fixedly mounted on the shaft of the second frame (202). The driving bevel gear (29) meshes with the driven bevel gear (30) and is rotatably mounted on the first frame (201). The second driving wheel (28) is coaxially fixedly mounted on the driving bevel gear (29). The second motor (27) is used to drive the second driving wheel (28) to rotate.

6. A subway construction electrical safety warning system according to claim 5, characterized in that: The first motor (23) is mounted on the fire extinguishing mounting base (19). The output end of the first motor (23) is fixedly mounted with a first drive wheel (25). A first transmission belt (26) is wound between the first drive wheel (25) and the first drive wheel (24). The second motor (27) is mounted on the fire extinguishing mounting base (19). The output end of the second motor (27) is fixedly mounted with a second drive wheel (31). A second transmission belt (32) is wound between the second drive wheel (31) and the second drive wheel (28). The first drive wheel (24) and the second drive wheel (28) are located on both sides of the first frame (201) in the x-axis direction.

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