Tunnel emergency calling equipment with gas detection function

Abstract

The invention relates to the technical field of constructional engineering, in particular to tunnel emergency calling equipment with a gas detection function. The emergency calling device comprises an emergency calling machine, an air inlet pipeline is arranged on the emergency calling machine and used for inputting air into the emergency calling machine, a gas sensor is arranged on the emergency calling machine, and an inductive head on the gas sensor extends into the air inlet pipeline and used for detecting gas flowing in the air inlet pipeline. According to the emergency calling machine, the gas sensor is arranged on the emergency calling machine, so that whether harmful gas exists around or not can be detected in the using process of the emergency calling machine, the using function of the emergency calling machine is increased, and therefore accident escape and rescue work are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering emergency equipment, and in particular to a tunnel emergency call device with a gas detection function. Background Art

[0002] Nowadays, in the use of tunnels, in order to be able to understand the situation and carry out rescue as soon as possible when fire, underground river, landslide and other accidents occur in the tunnel, it is necessary to install emergency call equipment in the tunnel, which can provide timely communication means for drivers and construction personnel in emergency situations so that they can seek help from the outside world or report dangerous situations. It has functions such as emergency calls, automatic dialing and recording. Therefore, tunnel emergency call equipment is an important guarantee for the safety of life and property of people in the tunnel, and it is an extremely important facility that tunnels must have. However, some of today's emergency call equipment lacks relevant gas sensors, so it is impossible to accurately judge the dangerous gases in the air after an accident, which is not conducive to the escape and rescue work of the tunnel.

[0003] In the prior art, there is a tunnel emergency telephone terminal (Announcement No.: CN206259999U), which includes a housing and a communication module fixed in the housing, the communication module includes a main control unit and a 2M interface circuit connected to the main control unit, a photoelectric sensor circuit and a voice circuit, the 2M interface circuit is connected to an external cable, the photoelectric sensor circuit is connected to at least one lever, and the voice circuit is connected to a speaker and a microphone. Although the entire housing of the terminal is sealed, it can be dustproof, moisture-proof, and electromagnetic interference-proof, etc., it has good reliability and comprehensive functions, and can meet the use requirements in the harsh environment of the tunnel.

[0004] However, in actual use, its functions are relatively simple and it lacks gas sensors, making it impossible to determine whether there are dangerous gases in the tunnel, which is not conducive to tunnel escape and rescue work. Summary of the invention

[0005] In view of the problems existing in the background technology, a tunnel emergency call device with a gas detection function is proposed.

[0006] The present invention proposes a tunnel emergency call device with a gas detection function, comprising an emergency call machine, an air intake pipe is arranged on the emergency call machine, which is used to input air into the emergency call machine, and a gas sensor is arranged on the emergency call machine. The sensing head on the gas sensor extends into the air intake pipe, which is used to detect the gas flowing in the air intake pipe; the emergency call machine is provided with an air intake mechanism, which is in a connected state with the air intake pipe, and is used to pre-treat the incoming gas before the external gas enters the air intake pipe, so as to avoid the impurity gas affecting the data detection of the gas sensor.

[0007] Preferably, the air intake mechanism is composed of a fixed box installed outside the emergency call machine, an air duct arranged in the fixed box, a gas heating assembly arranged in the fixed box, and an impurity filtering assembly installed on the fixed box, wherein the fixed box is divided into two chambers by a partition, the air duct is located in the chamber close to the right side, one end of the air duct is connected to the other chamber, and the other end of the air duct extends to the outside of the fixed box and is in a connected state with the impurity filtering assembly, an exhaust fan is arranged in the chamber of the fixed box away from the air duct, which is used to agitate the airflow so that the external gas can flow into the air intake duct faster, the air duct adopts a segmented design, the gas heating assembly is arranged between the two segments of the air duct, and is connected to the air duct by a threaded connection, and the impurity filtering assembly is used to preliminarily filter the gas entering the air intake duct.

[0008] Preferably, the gas heating assembly is composed of an adjusting cylinder and a heating element, the adjusting cylinder is arranged in a fixed box, the adjusting cylinder is composed of an inner cylinder and an outer cylinder, the heating element is arranged between the inner cylinder and the outer cylinder, the inner cylinder is composed of a heat-conducting material, a connecting piece is slidably installed on the inner cylinder of the adjusting cylinder, one end of the connecting piece extends to the outside of the adjusting cylinder, and an external thread is arranged on the outer side of the end portion of the extended connecting piece, an internal thread is arranged on the air guide pipe, one end of the connecting piece extends into the air guide pipe, and the external thread on the connecting piece is in a threaded connection state with the internal thread on the air guide pipe.

[0009] Preferably, a diverter for diverting gas is provided in the inner cylinder on the regulating cylinder. The diverter is cylindrical, and its outer side is fixedly connected to the inner wall of the inner cylinder. A plurality of air guide holes are provided on the diverter, which are distributed in a ring shape on the diverter and are arranged in a spiral shape.

[0010] Preferably, a water collecting cylinder for collecting water vapor is installed in the fixed box, and two exhaust pipes are installed on the water collecting cylinder. The other ends of the two exhaust pipes are connected to the inner cylinder on the adjusting cylinder, and the connection between the exhaust pipe and the inner cylinder on the adjusting cylinder is at the edge of the inner cylinder, thereby increasing the collection surface of the water vapor in the inner cylinder, and the exhaust pipe is arranged in an arc shape. When the exhaust pipe extends out of the adjusting cylinder, it is in an inclined upward state, and the highest point of the exhaust pipe is higher than the adjusting cylinder, thereby facilitating the movement of water vapor along the exhaust pipe. An opening one is provided on one side of the water collecting cylinder, and the water flow in the water collecting cylinder can be discharged through the opening one. A sealing head is provided in the opening one, and the sealing head is connected to the inner wall of the opening one by a threaded connection.

[0011] Preferably, the impurity filtering assembly is composed of an air intake cylinder installed on a fixed box and a filter cylinder installed in the air intake cylinder. The top and bottom ends of the air intake cylinder are both provided with through ports. The top port of the air intake cylinder is connected to one end of the air duct. External gas enters the air intake cylinder through the lower end port of the air intake cylinder, and then enters the air duct through the upper end port of the air intake cylinder after being filtered by the filter cylinder.

[0012] Preferably, the air intake cylinder is rotatably installed with a transmission frame, which is composed of a rotating rod and a horizontal bar. The rotating rod is rotatably installed in the air intake cylinder, and the bottom end of the rotating rod extends into the filter cylinder and is rotatably connected with the filter cylinder. The horizontal bar is installed at the bottom end of the rotating rod and is located in the filter cylinder. A cleaning plate is installed on one side of the horizontal bar, and a brush is provided on one side of the cleaning plate. The brush contacts the inner wall of the filter cylinder and is used to clean the inner wall of the filter cylinder to reduce the blockage of the filter cylinder caused by impurities. An impeller is provided on the top end of the rotating rod. The impeller rotates under the action of the airflow, driving the transmission frame and the cleaning plate to rotate, thereby providing power for cleaning the filter cylinder.

[0013] Preferably, a long air bag is provided on the inner wall of the air duct near the air inlet cylinder, the air bag and the inner wall of the air duct are in a state of close connection, a transmission rod is provided in the air duct, the bottom end of the transmission rod extends out of the air duct and is rotatably connected with the inner wall of the air duct, an end of the transmission rod located in the air duct is sleeved with an impeller 2, an adjusting disk is installed at the bottom end of the transmission rod, an adjusting frame is installed on the adjusting disk, an adjusting air cylinder is installed on the fixed box, a piston is slidably installed on the inner wall of the adjusting air cylinder, one side of the adjusting frame extends into the adjusting air cylinder and is connected with the adjusting air cylinder. A flexible connection is used to drive the piston to move. An air pipe is installed on the regulating air cylinder. The other end of the air pipe extends into the air guide tube and is connected to the air bag. Under the flow of air, impeller 2 drives the transmission rod to rotate, and indirectly drives the piston to move through the regulating disk and the regulating frame. Through the action of the air pipe, the gas in the regulating air cylinder and the air bag moves back and forth, thereby making the outer wall of the air bag in a state of contraction and expansion back and forth, thereby making impurities attached to the outer wall of the air bag fall off, reducing the impurities attached to the surface of the air bag and causing bacteria to grow.

[0014] Preferably, the air intake cylinder adopts a diamond design, and its top and bottom ends both adopt a conical structure. A sealing piece is slidably installed on the air intake cylinder, and the sealing piece is made of aluminum material. The sealing piece will seal the bottom opening of the air intake cylinder when only subjected to gravity. When the air intake cylinder stops being used, it will prevent outside gas from entering the air intake cylinder. Under the influence of the airflow of the exhaust fan, it will move upward and allow outside airflow to enter through the bottom opening of the air intake cylinder.

[0015] Preferably, the top of the sealing piece is conical, thereby preventing impurities from remaining on the top of the sealing piece. At the same time, the sealing piece is hollow, thereby reducing the weight of the sealing piece and allowing the external airflow to flow stably into the air inlet cylinder through the bottom opening of the air inlet cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: In the present invention, by arranging a gas sensor on the emergency call machine, the emergency call machine can detect whether there is harmful gas around during use, thereby increasing the use function of the emergency call machine, thereby facilitating accident escape and rescue work; By setting an exhaust fan on the emergency call machine, the speed of the external gas flowing to the gas sensor can be increased, and the detection efficiency of the gas sensor can be improved. At the same time, by setting an impurity filtering component and a gas heating component, the gas flowing to the gas sensor can be filtered for impurities and water vapor can be removed to prevent the impurity-containing gas from affecting the data detection of the gas sensor. In this way, the sensor head of the gas sensor can be protected to prevent it from being damaged by the influence of the external environment and affecting the detection results, and at the same time, the service life of the gas sensor is guaranteed. At the same time, an air bag is arranged in the pipeline for gas delivery to avoid direct contact between the inner wall of the pipeline and the gas, thereby preventing impurities from adhering to the inner wall of the pipeline and causing bacteria to grow. By arranging an adjusting gas cylinder and a piston, the gas in the air bag flows back and forth in the adjusting gas cylinder and the air bag, so that the outer wall of the air bag is in a state of contraction and expansion back and forth, thereby further preventing impurities from adhering to the surface of the air bag, ensuring that the pipeline for conveying gas is in a clean state. At the same time, in the process of heating the gas, part of the hot gas will also act on the pipeline for conveying gas, which is used to ensure the dryness of the pipeline, reduce the growth of bacteria, and ensure the accuracy of gas detection. At the same time, a sealing piece is arranged in the air intake cylinder to seal the air intake port of the air intake cylinder after stopping the gas detection to prevent the outside gas from entering therein. This can further ensure the protection of the internal environment of the gas transmission pipeline, avoid the adhesion of impurities or the breeding of bacteria, and indirectly ensure the accuracy of the gas detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the connection structure between the gas sensor and the air intake pipe in the present invention; Figure 3 It is a cross-sectional structural schematic diagram of the fixing box in the present invention; Figure 4 Another cross-sectional structural schematic diagram of the fixing box in the present invention; Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part A shown; Figure 6 It is a schematic cross-sectional structural diagram of the air intake cylinder in the present invention; Figure 7 It is a schematic diagram of the structure of the regulating cylinder and the water collecting cylinder in the present invention; Figure 8 It is a structural schematic diagram of the diverter in the present invention.

[0018] Figure numerals: 1. Emergency call machine; 2. Air intake duct; 3. Fixed box; 4. Exhaust fan; 5. Air duct; 6. Adjustment cylinder; 7. Connector; 8. Heating element; 9. Diverter; 10. Gas sensor; 11. Air intake cylinder; 12. Filter cylinder; 13. Impeller 1; 14. Transmission frame; 15. Cleaning plate; 16. Sealing plate; 17. Exhaust pipe; 18. Water collecting cylinder; 19. Air bag; 20. Impeller 2; 21. Transmission rod; 22. Adjustment disk; 23. Adjustment frame; 24. Adjustment cylinder; 25. Piston; 26. Air supply pipe. DETAILED DESCRIPTION

[0019] like Figure 1-Figure 8 As shown, a tunnel emergency call device with a gas detection function proposed by the present invention comprises: an emergency call machine 1, which is constructed by the prior art. By tapping the emergency call machine 1, the cause of the accident and the location of the accident can be quickly uploaded and recorded, and transmitted to the outside world, which is convenient for the subsequent rescue. The surface of the emergency call machine 1 can be sprayed with a paint with a striking color to facilitate the identification of escapees. The emergency call machine 1 is provided with an air intake duct 2 for inputting air into the emergency call machine 1. The emergency call machine 1 is provided with a gas sensor 10. In this embodiment, the gas sensor 10 adopts The existing technology is constructed, and a plurality of different types of gas detection sensors can be used to set up the gas sensor 10, which is used to detect different harmful gases. The sensing head on the gas sensor 10 extends into the intake duct 2, and is used to detect the gas flowing in the intake duct 2; an intake mechanism is provided on the emergency call machine 1, and the intake mechanism is in a connected state with the intake duct 2, and is used to pre-treat the incoming gas before the external gas enters the intake duct 2, so as to avoid the impurity gas affecting the data detection of the gas sensor 10, and reduce the damage to the sensing head on the gas sensor 10 caused by harmful substances in the gas.

[0020] The air intake mechanism is composed of a fixed box 3 installed outside the emergency call machine 1, an air duct 5 arranged in the fixed box 3, a gas heating component arranged in the fixed box 3 and an impurity filtering component installed on the fixed box 3. One side of the fixed box 3 is set as opening 2, and a sealing plate is installed on one side of the fixed box 3 by bolts, and the sealing plate is used to block the opening 2, wherein the fixed box 3 is divided into two chambers by a partition, and the air duct 5 is located in the chamber close to the right side, one end of the air duct 5 is connected to the other chamber, and the other end of the air duct 5 extends to the outside of the fixed box 3 and is in a connected state with the impurity filtering component, and an exhaust fan 4 is arranged in the chamber of the fixed box 3 away from the air duct 5 for agitating airflow, one end of the air intake duct 2 is connected to the chamber containing the exhaust fan 4, and the other end of the air intake duct 2 is arranged with a one-way valve, and the setting of the one-way valve can prevent external gas impurities from entering the air intake duct 2, so that the external gas can flow into the air intake duct 2 faster, and the chamber with the exhaust fan 4 is arranged An L-shaped baffle is installed on the wall, and a filter screen is arranged on the L-shaped baffle for secondary filtering of impurities, and a collection frame is arranged below the filter screen for collecting impurities. The air duct 5 adopts a segmented design, and the gas heating component is arranged between the two segments of the air duct 5 and is connected to the air duct 5 by a threaded connection. The impurity filtering component is used to preliminarily filter the gas entering the air intake pipe 2. The gas heating component is composed of an adjusting cylinder 6 and a heating element 8. The adjusting cylinder 6 is arranged in the fixed box 3. The adjusting cylinder 6 is composed of an inner cylinder and an outer cylinder. The heating element 8 is arranged between the inner cylinder and the outer cylinder. The inner cylinder is composed of a heat-conducting material. A connecting piece 7 is slidably installed on the inner cylinder of the adjusting cylinder 6. One end of the connecting piece 7 extends to the outside of the adjusting cylinder 6, and an external thread is arranged on the outer side of the end of the extended connecting piece 7. An internal thread is arranged on the air duct 5, and one end of the connecting piece 7 extends into the air duct 5. The external thread on the connecting piece 7 is in a threaded connection state with the internal thread on the air duct 5.

[0021] A flow divider 9 for diverting gas is arranged in the inner cylinder on the regulating cylinder 6. The flow divider 9 is cylindrical, and its outer side is fixedly connected to the inner wall of the inner cylinder. A plurality of air guide holes are opened on the flow divider 9. The air guide holes are annularly distributed on the flow divider 9, and the air guide holes are arranged in a spiral shape. A water collecting cylinder 18 for collecting water vapor is installed in the fixed box 3. Two exhaust pipes 17 are installed on the water collecting cylinder 18. The other ends of the two exhaust pipes 17 are connected to the inner cylinder on the regulating cylinder 6, and the exhaust pipes 17 are connected to the inner cylinder on the regulating cylinder 6. The joint is located at the edge of the inner cylinder, thereby increasing the collection surface of water vapor in the inner cylinder, and the exhaust pipe 17 is arranged in an arc shape. The exhaust pipe 17 is in an inclined upward state when extending out of the regulating cylinder 6, and the highest point of the exhaust pipe 17 is higher than the regulating cylinder 6, thereby facilitating the movement of water vapor along the exhaust pipe 17. An opening one is provided on one side of the water collecting cylinder 18, and the water flow in the water collecting cylinder 18 can be discharged through the opening one. A sealing head is provided in the opening one, and the sealing head is connected to the inner wall of the opening one by a threaded connection.

[0022] The impurity filtering assembly is composed of an air intake cylinder 11 installed on the fixed box 3 and a filter cylinder 12 installed in the air intake cylinder 11. The top and bottom ends of the air intake cylinder 11 are both provided with through ports. The top through port of the air intake cylinder 11 is connected with one end of the air guide pipe 5. The external gas enters the air intake cylinder 11 through the lower through port of the air intake cylinder 11, and then enters the air guide pipe 5 through the upper through port of the air intake cylinder 11 after being filtered by the filter cylinder 12. The air intake cylinder 11 is rotatably installed with a transmission frame 14, which is composed of a rotating rod and a horizontal bar. The rotating rod is rotatably installed in the air intake cylinder 11. The rotating rod The bottom end extends into the filter cartridge 12 and is rotatably connected to the filter cartridge 12. The horizontal bar is installed at the bottom end of the rotating rod and is located in the filter cartridge 12. A cleaning plate 15 is installed on one side of the horizontal bar. A brush is provided on one side of the cleaning plate 15. The brush contacts the inner wall of the filter cartridge 12 and is used to clean the inner wall of the filter cartridge 12 to reduce the blockage of the filter cartridge 12 caused by impurities. An impeller 13 is sleeved on the top end of the rotating rod. The impeller 13 rotates under the action of the airflow, driving the transmission frame 14 and the cleaning plate 15 to rotate, thereby providing power for cleaning the filter cartridge 12.

[0023] A long air bag 19 is arranged on the inner wall of the air duct 5 near the air inlet cylinder 11, and the air bag 19 is in a state of being fitted and connected with the inner wall of the air duct 5. A transmission rod 21 is arranged in the air duct 5, and the bottom end of the transmission rod 21 extends out of the air duct 5 and is rotatably connected with the inner wall of the air duct 5. An impeller 20 is sleeved on one end of the transmission rod 21 located in the air duct 5, and an adjusting disk 22 is installed at the bottom end of the transmission rod 21, and an adjusting frame 23 is installed on the adjusting disk 22. An adjusting air cylinder 24 is installed on the fixed box 3, and a piston 25 is slidably installed on the inner wall of the adjusting air cylinder 24. One side of the adjusting frame 23 extends into the adjusting air cylinder 24 and It is movably connected to drive the piston 25 to move. An air pipe 26 is installed on the regulating air cylinder 24. The other end of the air pipe 26 extends into the air guide tube 5 and is connected to the air bag 19. Under the flow of air, the impeller 20 drives the transmission rod 21 to rotate, and indirectly drives the piston 25 to move through the adjusting disk 22 and the adjusting frame 23. Through the action of the air pipe 26, the gas in the regulating air cylinder 24 and the air bag 19 moves back and forth, thereby making the outer wall of the air bag 19 in a state of contraction and expansion back and forth, thereby making impurities attached to the outer wall of the air bag 19 fall off, reducing the impurities attached to the surface of the air bag 19 and causing bacteria to grow.

[0024] The air intake cylinder 11 adopts a prismatic design, and its top and bottom ends both adopt a conical structure. A sealing piece 16 is slidably installed on the air intake cylinder 11. The sealing piece 16 is made of aluminum material. When only subjected to gravity, the sealing piece 16 will complete the sealing of the bottom opening of the air intake cylinder 11. When the air intake cylinder 11 stops being used, it prevents external gas from entering the air intake cylinder 11. Under the influence of the airflow of the exhaust fan 4, it will move upward and allow the external airflow to enter through the bottom opening of the air intake cylinder 11. The top of the sealing piece 16 adopts a conical setting, thereby preventing impurities from remaining on the top of the sealing piece 16. At the same time, the sealing piece 16 also adopts a hollow setting, thereby reducing the weight of the sealing piece 16, so that the external airflow can stably flow into the air intake cylinder 11 through the bottom opening of the air intake cylinder 11.

[0025] In this embodiment, when in use, the emergency call machine 1 can be installed in the tunnel, and a gas sensor 10 is provided in the emergency call machine 1 for detecting external gas, so that when a fire, underground river, landslide or other accidents occur in the tunnel, it can accurately determine whether there is dangerous gas in the air in the tunnel after the accident, thereby ensuring the development of tunnel escape and rescue work, increasing the use function of the emergency call machine 1, and ensuring the safety of tunnel use; When the gas in the tunnel is detected by the gas sensor 10, the exhaust fan 4 is first started to encourage the external airflow to enter the air intake pipe 2, providing airflow for the induction of the gas sensor 10. At the same time, when the exhaust fan 4 encourages the airflow, it can also speed up the flow of the airflow in the tunnel toward the emergency call machine 1, thereby increasing the comprehensiveness of the detection of the airflow. When the exhaust fan 4 is started, the sealing piece 16 in the air intake cylinder 11 moves upward under the influence of the airflow, and the airflow enters the air intake cylinder 11, and then the airflow is preliminarily filtered by the filter cylinder 12. The filtered airflow flows into the air guide pipe 5 again, and the heating element 8 is heated by electricity, and the heat is conducted to the diverter 9. The gas flows through the air guide holes on the diverter 9. At this time, the heat will evaporate the water vapor in the incoming airflow to prevent the water vapor in the gas from damaging the sensor of the gas sensor 10. The heated gas flows into the air intake pipe 2 again, and the gas is detected by the gas sensor 10, thereby ensuring the accuracy of the detection result of the gas in the tunnel and ensuring the safety of tunnel rescue and escape. During the flow of gas, the impeller 13 and the impeller 2 20 will be driven to rotate respectively. The rotation of the impeller 13 can drive the transmission frame 14 and the cleaning plate 15 to rotate, thereby cleaning the impurities on the filter cartridge 12 to prevent the impurities from clogging the filter cartridge 12 and ensuring the normal flow of the airflow. The rotation of the impeller 20 can drive the transmission rod 21 and the adjustment disk 22 to rotate, and then the position of the piston 25 can be adjusted through the adjustment frame 23, thereby allowing the airflow to move back and forth in the adjustment cylinder 24 and the airbag 19, causing the outer wall of the airbag 19 to shrink or swell back and forth, so as to shake off the impurities on the outside of the airbag 19 and prevent the impurities from adhering to and breeding bacteria, thereby ensuring the accuracy of gas detection.

[0026] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A tunnel emergency call device with gas detection function, comprising: The emergency call machine (1) is characterized in that: The emergency call machine (1) is provided with an air intake duct (2) for inputting air into the emergency call machine (1); the emergency call machine (1) is provided with a gas sensor (10); a sensing head on the gas sensor (10) extends into the air intake duct (2) for detecting gas flowing in the air intake duct (2); The emergency call machine (1) is provided with an air intake mechanism, which is in a connected state with the air intake pipeline (2) and is used to pre-treat the incoming gas before the outside gas enters the air intake pipeline (2) to prevent the impurity-containing gas from affecting the data detection of the gas sensor (10).

2. The tunnel emergency call device with gas detection function according to claim 1 is characterized in that: The air intake mechanism is composed of a fixed box (3) installed outside the emergency call machine (1), an air guide pipe (5) arranged in the fixed box (3), a gas heating component arranged in the fixed box (3), and an impurity filtering component installed on the fixed box (3); The fixed box (3) is divided into two chambers by a partition, the air guide pipe (5) is located in the chamber close to the right side, one end of the air guide pipe (5) is connected to the other chamber, the other end of the air guide pipe (5) extends outside the fixed box (3) and is in communication with the impurity filtering component, and an exhaust fan (4) is provided in the chamber of the fixed box (3) away from the air guide pipe (5) for agitating air flow so that external gas can flow into the air intake pipe (2) faster; The air guide pipe (5) adopts a segmented design, the gas heating component is arranged between two segments of the air guide pipe (5), and is connected to the air guide pipe (5) by means of a threaded connection, and the impurity filtering component is used to preliminarily filter the gas entering the air intake pipe (2).

3. The tunnel emergency call device with gas detection function according to claim 2 is characterized in that: The gas heating assembly is composed of an adjusting cylinder (6) and a heating element (8). The adjusting cylinder (6) is arranged in a fixed box (3). The adjusting cylinder (6) is composed of an inner cylinder and an outer cylinder. The heating element (8) is arranged between the inner cylinder and the outer cylinder. The inner cylinder is composed of a heat-conducting material. A connecting piece (7) is slidably mounted on the inner cylinder of the adjusting cylinder (6). One end of the connecting piece (7) extends outside the adjusting cylinder (6). An external thread is arranged on the outer side of the end of the extending connecting piece (7). An internal thread is arranged on the air guide pipe (5). One end of the connecting piece (7) extends into the air guide pipe (5). The external thread on the connecting piece (7) is in a threaded connection state with the internal thread on the air guide pipe (5).

4. The tunnel emergency call device with gas detection function according to claim 3 is characterized in that: A flow diverter (9) for diverting gas is arranged in the inner cylinder on the regulating cylinder (6); the flow diverter (9) is cylindrical, and its outer side is fixedly connected to the inner wall of the inner cylinder; a plurality of air guide holes are provided on the flow diverter (9); the air guide holes are distributed in an annular shape on the flow diverter (9), and the air guide holes are arranged in a spiral shape.

5. The tunnel emergency call device with gas detection function according to claim 4 is characterized in that: A water collecting cylinder (18) for collecting water vapor is installed in the fixed box (3), and two exhaust pipes (17) are installed on the water collecting cylinder (18). The other ends of the two exhaust pipes (17) are both connected to the inner cylinder on the regulating cylinder (6), and the connection between the exhaust pipes (17) and the inner cylinder on the regulating cylinder (6) is located at the edge of the inner cylinder, thereby increasing the collection surface of the water vapor in the inner cylinder, and the exhaust pipes (17) are arranged in an arc shape. When the exhaust pipes (17) extend out of the regulating cylinder (6), they are in an inclined upward state, and the highest point of the exhaust pipes (17) is higher than the regulating cylinder (6); This facilitates the movement of water vapor along the exhaust pipe (17). An opening 1 is provided on one side of the water collecting cylinder (18), through which water in the water collecting cylinder (18) can be discharged. A plugging head is provided in the opening 1, and the plugging head is connected to the inner wall of the opening 1 by means of a threaded connection.

6. The tunnel emergency call device with gas detection function according to claim 5, characterized in that: The impurity filtering assembly is composed of an air intake cylinder (11) mounted on a fixed box (3) and a filter cylinder (12) mounted in the air intake cylinder (11). The top and bottom ends of the air intake cylinder (11) are both provided with openings. The top opening of the air intake cylinder (11) is connected to one end of the air guide pipe (5). External gas enters the air intake cylinder (11) through the lower opening of the air intake cylinder (11), and then enters the air guide pipe (5) through the upper opening of the air intake cylinder (11) after being filtered by the filter cylinder (12).

7. The tunnel emergency call device with gas detection function according to claim 6, characterized in that: The air intake cylinder (11) is rotatably mounted with a transmission frame (14), the transmission frame (14) being composed of a rotating rod and a horizontal bar, the rotating rod being rotatably mounted in the air intake cylinder (11), the bottom end of the rotating rod extending into the filter cylinder (12) and being rotatably connected to the filter cylinder (12), the horizontal bar being mounted at the bottom end of the rotating rod and being located in the filter cylinder (12), a cleaning plate (15) being mounted on one side of the horizontal bar, a brush being arranged on one side of the cleaning plate (15), the brush being in contact with the inner wall of the filter cylinder (12) and being used for cleaning the inner wall of the filter cylinder (12) to reduce clogging of the filter cylinder (12) caused by impurities; The top end of the rotating rod is sleeved with an impeller 1 (13), and the impeller 1 (13) rotates under the action of the airflow, driving the transmission frame (14) and the cleaning plate (15) to rotate, thereby providing power for cleaning the filter cartridge (12).

8. The tunnel emergency call device with gas detection function according to claim 7, characterized in that: A long air bag (19) is arranged on the inner wall of the air guide tube (5) near the air inlet cylinder (11), and the air bag (19) is in a state of being fitted and connected with the inner wall of the air guide tube (5). A transmission rod (21) is arranged in the air guide tube (5), and the bottom end of the transmission rod (21) extends out of the air guide tube (5) and is rotatably connected with the inner wall of the air guide tube (5). One end of the transmission rod (21) located in the air guide tube (5) is sleeved with an impeller 2 (20), and an adjustment disk (22) is installed at the bottom end of the transmission rod (21), and an adjustment frame (23) is installed on the adjustment disk (22). The fixing box (3) An adjusting air cylinder (24) is installed on the upper part, a piston (25) is slidably installed on the inner wall of the adjusting air cylinder (24), one side of the adjusting frame (23) extends into the adjusting air cylinder (24) and is movably connected to drive the piston (25) to move, an air delivery pipe (26) is installed on the adjusting air cylinder (24), the other end of the air delivery pipe (26) extends into the air guide pipe (5) and is connected to the air bag (19), under the flow of air, the impeller 2 (20) drives the transmission rod (21) to rotate, and indirectly drives the piston (25) to move through the adjusting disk (22) and the adjusting frame (23); Through the action of the gas delivery pipe (26), the gas in the regulating gas cylinder (24) and the air bag (19) moves back and forth, thereby causing the outer wall of the air bag (19) to be in a state of contraction and expansion back and forth, thereby causing impurities attached to the outer wall of the air bag (19) to fall off, thereby reducing the impurities attached to the surface of the air bag (19) and causing bacterial growth.

9. The tunnel emergency call device with gas detection function according to claim 8, characterized in that: The air intake cylinder (11) is designed in a diamond shape, and its top and bottom ends are both conical structures. A blocking piece (16) is slidably mounted on the air intake cylinder (11). The blocking piece (16) is made of aluminum material. When only subjected to gravity, the blocking piece (16) will block the bottom opening of the air intake cylinder (11). When the air intake cylinder (11) is out of use, it prevents external gas from entering the air intake cylinder (11). Under the influence of the airflow of the exhaust fan (4), the blocking piece (16) will move upward and allow external airflow to enter through the bottom opening of the air intake cylinder (11).

10. The tunnel emergency call device with gas detection function according to claim 9, characterized in that: The top of the blocking piece (16) is conical, thereby preventing impurities from being retained on the top of the blocking piece (16). At the same time, the blocking piece (16) is also hollow, thereby reducing the weight of the blocking piece (16) and allowing external airflow to stably flow into the air intake cylinder (11) through the bottom opening of the air intake cylinder (11).

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