Ventilation pipeline of underground garage

Abstract

The invention relates to the technical field of ventilation pipelines, and provides an underground garage ventilation pipeline. The ventilation pipeline is mounted on the bearing frame; hanging brackets used for fixed installation are symmetrically arranged on the top of the bearing bracket, and gravity sensors and displacement sensors are installed at the joints of the hanging brackets and an external connection structure. The ventilation pipeline comprises an outer shell, a first baffle is arranged at one end of the outer shell, an air inlet is formed in the first baffle, a second baffle is arranged at the other end of the outer shell, and an air outlet is formed in the second baffle; a fan is arranged on the side, close to the air outlet, of the ventilation pipeline and connected with the air outlet. A sensor arrangement frame is arranged in the outer shell, and a vibration sensor and an acceleration sensor are arranged on the sensor arrangement frame. Through the arrangement of the vibration sensors and the acceleration sensors, the stress condition of the pipeline in a high-speed operation state can be analyzed, the pipeline fixing condition and the pipeline operation condition are judged, and it is guaranteed that abnormity is found and eliminated in time.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation ducts, and in particular to a ventilation duct for an underground garage. Background Art

[0002] The underground garage is equipped with ventilation ducts and smoke exhaust ducts. The ventilation and smoke exhaust ducts are usually used for ventilation in the underground garage to ensure that the air quality in the garage meets the standards; in case of fire, they are used for smoke exhaust to ensure the safe evacuation of personnel.

[0003] Under normal circumstances, the exhaust fan in the underground garage is dual-speed, with low speed used for normal ventilation. High speed is used in case of fire. After investigation, it was found that the underground garage is a closed place, and the existing operation status of the ventilation and exhaust ducts in the underground garage is prone to the accumulation of dust, exhaust gas, water vapor, etc., which adhere to the ventilation and exhaust ducts. During normal ventilation, there are a large number of ventilation and exhaust ducts in the underground garage, and they are hoisted on the top of the garage with a large height difference, making it difficult to inspect. For example, in the event of a fire, once the structure becomes loose or falls off, it will cause major safety hazards. The operation status of the ventilation and exhaust ducts in the underground garage cannot be judged, including fatigue, damage, service life, etc., and there is a lack of effective data. Therefore, the existing ventilation ducts in the underground garage are actually unreasonable in structural design, and there are major safety hazards. Summary of the invention

[0004] The purpose of the present invention is to solve at least one technical problem in the background technology and provide a ventilation duct for an underground garage.

[0005] To achieve the above object, the present invention provides an underground garage ventilation duct, comprising:

[0006] Support frame;

[0007] A ventilation duct is installed on the support frame;

[0008] A hanger for fixed installation is symmetrically arranged on the top of the support frame, and a gravity sensor and a displacement sensor are installed at the junction of the hanger and the external structure;

[0009] The ventilation duct comprises an outer shell, a first baffle is provided at one end of the outer shell, an air inlet is installed on the first baffle, and a second baffle is provided at the other end of the outer shell, an air outlet is installed on the second baffle;

[0010] A fan is provided on one side of the ventilation duct close to the air outlet, and the fan is connected to the air outlet;

[0011] A sensor arrangement frame is arranged in the outer shell, and a vibration sensor and an acceleration sensor are arranged on the sensor arrangement frame.

[0012] According to one aspect of the present invention, a humidity sensor is also provided on the sensor arrangement rack;

[0013] A plurality of exhaust valves are arranged at intervals at the bottom of the ventilation duct, and each exhaust valve is interlocked;

[0014] The humidity sensor monitors the humidity in the ventilation duct, and when the humidity reaches a preset value, each exhaust valve is controlled to open for dehumidification.

[0015] According to one aspect of the present invention, a filtering mechanism is provided in the ventilation duct for filtering the airflow entering the ventilation duct.

[0016] According to one aspect of the present invention, the filtering mechanism includes a plurality of mounting frames, which are connected end to end in sequence, and a rotating shaft is provided at the bottom of each mounting frame, a filter frame is mounted on the rotating shaft, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected to the filter frame, and the other end is connected to the mounting frame.

[0017] According to one aspect of the present invention, pressure sensors for monitoring the pressure applied to the filter frame are installed on both sides of the filter frame.

[0018] According to one aspect of the present invention, the top of the filter mechanism is detachably connected to the outer shell via an upper connecting mechanism, and the bottom of the filter mechanism is detachably connected to the outer shell via a supporting mechanism.

[0019] According to one aspect of the present invention, the upper connection mechanism comprises: a connection sleeve and an upper fastening bolt;

[0020] A mounting threaded hole is arranged on the top of the outer shell, and the upper fastening bolt passes through the mounting threaded hole and is connected to the connecting sleeve, and the connecting sleeve is sleeved on the top of the filter mechanism.

[0021] According to one aspect of the present invention, the bottom of the outer shell is provided with an inlet for the filter mechanism to be inserted into the ventilation duct, and the supporting mechanism is arranged at the inlet;

[0022] The supporting mechanism includes a supporting plate, which is U-shaped. A rectangular plug hole arranged opposite to the entrance is provided in the middle of the supporting plate. A lower sealing plate is inserted into the rectangular plug hole. The lower sealing plate includes a bottom plate and an upper protrusion arranged on the bottom plate. The bottom plate blocks the rectangular plug hole from the outside. The shape of the upper protrusion matches the entrance, and the upper protrusion abuts the bottom of the filtering mechanism.

[0023] According to one aspect of the present invention, the supporting mechanism further comprises a tensioning mechanism respectively arranged at both ends of the supporting plate, the tensioning mechanism comprising a guide plate fixed to the end of the supporting plate and an elastic plate arranged on the inner wall of the guide plate;

[0024] A tensioning bolt is provided in the middle of the guide plate, a sliding cavity is provided on each side of the entrance, an upper sliding hole is provided at the top of the sliding cavity, a lower sliding hole is provided at the bottom of the sliding cavity, a sliding block is slidably matched in the sliding cavity, an upper guide rod is fixedly connected to the upper part of the sliding block, the upper guide rod can slide along the upper sliding hole, an elastic sealing arc plate abutting against the outer wall of the bottom of the filtering mechanism is installed on the top of the upper guide rod close to the filtering mechanism, a rubber coating is provided on the surface of the elastic sealing arc plate, a lower guide rod is provided at the bottom of the sliding block, the lower guide rod can slide along the lower sliding hole, and a flexible spring is provided between the sliding block and the sliding block on the side of the sliding cavity close to the filtering mechanism;

[0025] The inner wall of the elastic plate is provided with two steps respectively engaged with the side walls of the two lower guide rods facing away from the filtering mechanism;

[0026] A groove is provided on the outer wall of the elastic plate, and the end of the tensioning bolt abuts against the groove after passing through the guide plate.

[0027] According to one aspect of the present invention, the supporting mechanism further comprises a tensioning mechanism respectively arranged at both ends of the supporting plate, the tensioning mechanism comprising a guide plate fixed to the end of the supporting plate and an elastic plate arranged on the inner wall of the guide plate;

[0028] A tensioning bolt is provided in the middle of the guide plate, a sliding cavity is provided on each side of the entrance, an upper sliding hole is provided at the top of the sliding cavity, a lower sliding hole is provided at the bottom of the sliding cavity, a sliding block is slidably matched in the sliding cavity, an upper guide rod is fixedly connected to the upper part of the sliding block, the upper guide rod can slide along the upper sliding hole, an elastic sealing arc plate abutting against the outer wall of the bottom of the filtering mechanism is installed on the top of the upper guide rod close to the filtering mechanism, a rubber coating is provided on the surface of the elastic sealing arc plate, a lower guide rod is provided at the bottom of the sliding block, the lower guide rod can slide along the lower sliding hole, and a flexible spring is provided between the sliding block and the sliding block on the side of the sliding cavity close to the filtering mechanism;

[0029] The inner wall of the elastic plate is provided with two steps respectively engaged with the side walls of the two lower guide rods facing away from the filtering mechanism;

[0030] A matching nut is provided in the middle of the elastic plate, and the matching nut is threadedly connected with the tensioning bolt, and the tensioning bolt abuts against the bottom of the filter mechanism.

[0031] According to the solution of the present invention, the present invention designs a seismic hanger fixation, which serves as a fixed node of the ventilation duct and plays a good fixing role. A gravity sensor is integrated on the ventilation duct, which can analyze and judge the dust and water vapor accumulation in the duct, judge the load of the bracket, and perform maintenance and warranty in advance before exceeding the allowable value. Vibration, acceleration, and displacement sensors are set on the ventilation duct, and the operation status of the ventilation duct can be judged in real time through historical data analysis. The filter mechanism is improved, which usually plays a good filtering role. In the event of serious blockage or fire, the filter can be automatically opened to quickly exhaust smoke and ensure the safety of personnel. An automatic exhaust valve is added, which can automatically open the exhaust port according to the humidity in the pipeline, reduce water vapor accumulation, and ensure the stability of the pipeline operation environment. The tensioning mechanism is designed to effectively enhance the sealing effect between the filter mechanism and the outer shell and reduce the influence of ventilation duct vibration on the filter mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a front view of a ventilation duct for an underground garage according to an embodiment of the present invention;

[0033] Figure 2 A side cross-sectional view schematically showing a ventilation duct for an underground garage according to an embodiment of the present invention;

[0034] Figure 3 A schematic diagram showing a structural arrangement of a filter mechanism according to an embodiment of the present invention;

[0035] Figure 4 A side cross-sectional view schematically showing a ventilation duct for an underground garage according to another embodiment of the present invention;

[0036] Figure 5 for Figure 4 Enlarged view of middle part B;

[0037] Figure 6 for Figure 4 Enlarged view of part A in the middle;

[0038] Figure 7 Schematically showing a side bottom view of a supporting mechanism according to an embodiment of the present invention;

[0039] Figure 8 A cross-sectional view schematically showing the structural arrangement of a supporting mechanism according to another embodiment of the present invention;

[0040] Fig. 9 A side bottom view of a supporting mechanism according to another embodiment of the present invention is schematically shown. DETAILED DESCRIPTION

[0041] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only to enable those skilled in the art to better understand and thus implement the present invention, rather than implying any limitation on the scope of the present invention.

[0042] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”

[0043] Figure 1 A schematic diagram of a front view of a ventilation duct for an underground garage according to an embodiment of the present invention;

[0044] Figure 2 A schematic side cross-sectional view of an underground garage ventilation duct according to an embodiment of the present invention is shown. Figure 1 and Figure 2 As shown, in this embodiment, the underground garage ventilation duct includes:

[0045] Support bracket 2;

[0046] The ventilation duct 1 is mounted on a support frame 2;

[0047] A hanger 3 for fixing on the ceiling is symmetrically arranged on the top of the support frame 2, and a gravity sensor and a displacement sensor are installed at the junction of the hanger 3 and the ceiling; by collecting gravity data and displacement data, the operation status in the pipeline is analyzed, and when the accumulated dust and water vapor reaches the upper limit threshold, a reminder is given to inspect, maintain and clean the pipeline;

[0048] Furthermore, in the present embodiment, the support bracket 2 includes a bottom support plate 21, and the bottom support plate 21 is provided with through holes on both sides, and screws 22 are installed in the through holes. The screws 22 pass through the bottom support plate 21 and are threadedly connected with fastening nuts 24. An upper pressure plate 23 is sleeved on the screw 22, and an upper pressure nut (not shown in the figure) is installed on the screw 22. The upper pressure nut is located above the upper pressure plate, and the upper pressure nut can make the upper pressure plate rest against the ventilation duct. The above-mentioned hanger 3 is installed on the top of the screw 22.

[0049] Further, in this embodiment, the ventilation duct 1 includes an outer shell 11, a first baffle 12 is provided at one end of the outer shell 11, an air inlet 13 is installed on the first baffle 12, and a second baffle 14 is provided at the other end of the outer shell 11, and an air outlet 15 is installed on the second baffle 14;

[0050] A fan 4 is provided on one side of the ventilation duct 1 close to the air outlet 15, and the fan 4 is connected to the air outlet 15;

[0051] A sensor arrangement frame 5 is provided in the outer shell, and a vibration sensor and an acceleration sensor are provided on the sensor arrangement frame 5. In this way, the stress condition of the pipeline under high-speed operation can be analyzed by setting a plurality of vibration sensors and acceleration sensors, which can be used to judge the fixing condition and operation condition of the pipeline, so as to ensure that abnormalities are discovered and eliminated in time.

[0052] Furthermore, in this embodiment, a humidity sensor is also provided on the sensor arrangement frame 5;

[0053] A plurality of exhaust valves 9 are arranged at intervals at the bottom of the ventilation duct 1, and each exhaust valve 9 is interlocked;

[0054] The humidity sensor monitors the humidity in the ventilation duct 1. When the humidity reaches a preset value, each exhaust valve 9 is controlled to open for dehumidification. In this way, the humidity in the ventilation duct 1 can be monitored in real time by the humidity sensor. When the humidity reaches a preset value or exceeds a preset value, the control structure automatically opens each exhaust valve 9 according to the signal sent by the humidity sensor, thereby removing moisture from the ventilation duct 1 and ensuring that the ventilation duct operating environment is dry and stable.

[0055] Furthermore, if Figure 2 As shown, according to one embodiment of the present invention, a filter mechanism 6 is provided in the ventilation duct to filter the airflow entering the ventilation duct. Figure 2 As shown, in this embodiment, the filter mechanism 6 is inserted into the ventilation duct 1 from the opening at the bottom of the ventilation duct 1, and the top and bottom ends of the filter mechanism 6 are respectively fixedly connected to the top and bottom of the outer shell 11. In this way, the filter mechanism 6 can effectively reduce external dust and sand.

[0056] However, the following problems also exist when the filter mechanism 6 is set up: if the filter is clogged, it is difficult to detect in time if the sensor fails, which may easily lead to increased wind pressure in the pipeline, which is not energy-saving in long-term operation and damages the pipeline; in the event of a fire, it hinders rapid smoke exhaust and endangers personnel safety. In order to solve this problem, Figure 3 As shown, according to one embodiment of the present invention, the filtering mechanism 6 includes a plurality of mounting frames 61, and the plurality of mounting frames 61 are connected end to end in sequence. A rotating shaft 63 is provided at the bottom of each mounting frame 61, and a filter frame 62 is mounted on the rotating shaft 63. A torsion spring (not shown in the figure) is sleeved on the rotating shaft, and one end of the torsion spring is connected to the filter frame 62, and the other end is connected to the mounting frame 61.

[0057] Furthermore, in this embodiment, pressure sensors for monitoring the pressure of the filter frame 62 are installed on both sides of the filter frame 62. In this way, when dust and sand accumulate to a certain extent and the pressure difference between the two pressure sensors exceeds a threshold, data is transmitted to the monitoring center, an alarm is sounded, and the filter is reminded to replace the filter.

[0058] In extreme cases, when the pressure sensor fails or the pressure sensor transmission fails, the filter frame 62 of the filter mechanism 6 can automatically open according to the wind pressure due to the setting of the torsion spring, without affecting the safety of fire smoke exhaust.

[0059] Specifically, the working principle of the filter mechanism 6 is: in normal times, the underground garage uses low-speed ventilation, and the wind pressure is F1. When fire smoke exhaust is used, the underground garage uses high-speed smoke exhaust, and the wind pressure is F2. A torsion spring is installed in the installation frame, and the action pressure of the torsion spring is F3.

[0060] F1≤F3+θ≤F2;

[0061] Among them, Θ is a preset safety threshold. By adjusting Θ, it is ensured that the installation frame can be in a closed state at normal times. When the filter frame 62 is blocked or a fire occurs, the torsion spring can be stretched to open the filter frame 62, thereby ensuring that the installation frame can be ventilated normally.

[0062] Further, Figure 4 A side cross-sectional view of an underground garage ventilation duct according to another embodiment of the present invention is schematically shown. Figure 4 As shown, in this embodiment, the top of the filter mechanism 6 is detachably connected to the outer shell 11 through the upper connecting mechanism, and the bottom of the filter mechanism 6 is detachably connected to the outer shell 11 through the supporting mechanism. Such an arrangement can make the filter mechanism 6 easy to disassemble, repair and replace, thereby ensuring the overall function and life of the underground garage ventilation duct.

[0063] Further, Figure 5 for Figure 4 The enlarged view of the middle B. Figure 5 As shown, in this embodiment, the upper connection mechanism includes: a connection sleeve 71 and an upper fastening bolt 72;

[0064] A mounting threaded hole 111 is provided on the top of the outer shell 11 , and the upper fastening bolt 72 passes through the mounting threaded hole 111 and is connected to the connecting socket 71 , and the connecting socket 71 is sleeved on the top of the filter mechanism.

[0065] Further, Figure 6 for Figure 4 Enlarged view of part A in the middle; Figure 7 Schematically shows a side view of a supporting mechanism according to an embodiment of the present invention. Figure 6 As shown, in this embodiment, an inlet 10 for inserting the filter mechanism into the ventilation duct 1 is provided at the bottom of the outer shell 11, and a supporting mechanism is provided at the inlet 10;

[0066] like Figure 6 and Figure 7As shown, in the present embodiment, the supporting mechanism includes a supporting plate 700, which is U-shaped. A rectangular plug hole 701 arranged opposite to the entrance port 10 is provided in the middle of the supporting plate 700. A lower sealing plate 91 is inserted into the rectangular plug hole 701. The lower sealing plate 91 includes a bottom plate 911 and an upper protrusion 912 arranged on the bottom plate 911. The bottom plate 911 blocks the rectangular plug hole 701 from the outside. The shape of the upper protrusion 912 matches the entrance port 10 (for example, a rectangle), and the upper protrusion 912 abuts against the bottom of the filtering mechanism 6.

[0067] Furthermore, if Figure 6 and Figure 7 As shown, in this embodiment, the supporting mechanism further includes tensioning mechanisms respectively arranged at both ends of the supporting plate 700, and the tensioning mechanism includes a guide plate 73 fixed to the end of the supporting plate 700 and an elastic plate 87 arranged on the inner wall of the guide plate 73;

[0068] A tensioning bolt 74 is provided in the middle of the guide plate 73, and a sliding cavity 81 is provided on each side of the entrance 10. An upper sliding hole 82 is provided at the top of the sliding cavity 81, and a lower sliding hole 85 is provided at the bottom of the sliding cavity 81. A sliding block 88 is slidably matched in the sliding cavity 81. An upper guide rod 83 is fixedly connected to the upper part of the sliding block 88, and the upper guide rod 83 can slide along the upper sliding hole 82. An elastic sealing arc plate 84 that abuts against the outer wall of the bottom of the filtering mechanism 6 is installed on the side of the top of the upper guide rod 83 close to the filtering mechanism 6, and a rubber coating is provided on the surface of the elastic sealing arc plate 84. A lower guide rod 86 is provided at the bottom of the sliding block 88, and the lower guide rod 86 can slide along the lower sliding hole 85. A flexible spring 89 is provided between the side of the sliding cavity 81 close to the filtering mechanism 6 and the sliding block 88;

[0069] The inner wall of the elastic plate 87 is provided with two steps 871 respectively engaged with the side walls of the two lower guide rods 86 facing away from the filter mechanism 6;

[0070] A groove 872 is formed on the outer wall of the elastic plate 87 , and the end of the tensioning bolt 74 passes through the guide plate 73 and abuts against the groove 872 . When the filter mechanism 6 is in the filter housing 6, the filter housing 6 is in the filter housing 6. ...

[0071] Further, Figure 8 A cross-sectional view schematically showing the structural arrangement of a supporting mechanism according to another embodiment of the present invention; Fig. 9 Schematically shows a side view of a supporting mechanism according to another embodiment of the present invention. Figure 8 and Fig. 9 As shown, in this embodiment, the supporting mechanism further includes tensioning mechanisms respectively arranged at both ends of the supporting plate 700, and the tensioning mechanism includes a guide plate 73 fixed to the end of the supporting plate 700 and an elastic plate 87 arranged on the inner wall of the guide plate 73;

[0072] A tensioning bolt 74 is provided in the middle of the guide plate 73, and a sliding cavity 81 is provided on each side of the entrance 10. An upper sliding hole 82 is provided at the top of the sliding cavity 81, and a lower sliding hole 85 is provided at the bottom of the sliding cavity 81. A sliding block 88 is slidably matched in the sliding cavity 81. An upper guide rod 83 is fixedly connected to the upper part of the sliding block 88, and the upper guide rod 83 can slide along the upper sliding hole 82. An elastic sealing arc plate 84 that abuts against the outer wall of the bottom of the filtering mechanism 6 is installed on the side of the top of the upper guide rod 83 close to the filtering mechanism 6, and a rubber coating is provided on the surface of the elastic sealing arc plate 84. A lower guide rod 86 is provided at the bottom of the sliding block 88, and the lower guide rod 86 can slide along the lower sliding hole 85. A flexible spring 89 is provided between the side of the sliding cavity 81 close to the filtering mechanism 6 and the sliding block 88;

[0073] The inner wall of the elastic plate 87 is provided with two steps 871 respectively engaged with the side walls of the two lower guide rods 86 facing away from the filter mechanism 6;

[0074] A matching nut 810 is provided in the middle of the elastic plate 87, and the matching nut 810 is supported on the inner wall of the elastic plate 87. The matching nut 810 is threadedly connected with the tensioning bolt 74, and the top end of the tensioning bolt 74 abuts against the bottom of the filter mechanism. With such arrangement, after the tensioning bolt 74 is screwed, the mating nut 810 will move in the direction away from the filter mechanism 6 (i.e. downward), so that the elastic plate 87 is compressed. After the middle part of the elastic plate 87 is compressed, the two ends will be tightened toward the middle. At this time, the lower guide rod 86 can be pulled toward the direction of the filter mechanism 6 through the step 871, so that the sliding block 88 connected to the lower guide rod 86 and the upper guide rod 83 move together. When the upper guide rod 83 moves toward the filter mechanism 6, it will squeeze the elastic sealing arc plate 84 on the right side of its top, so that the end of the elastic sealing arc plate 84 will tightly abut against the outer wall of the filter mechanism 6, so that the elastic sealing arc plate 84 will press the filter mechanism 6 on the one hand, so that the filter mechanism 6 is limited, so that its position is stable and firm, and it is not easy to move and shift. On the other hand, the sealing of the bottom corner of the filter mechanism 6 is strengthened to ensure that the bottom corner of the filter mechanism 6 will not be ventilated, and dust and sand will not drill out through its bottom, thereby improving the filtering effect.

[0075] According to the above scheme of the present invention, the present invention designs a seismic hanger fixation, which serves as a fixed node of the ventilation duct and plays a good fixing role. A gravity sensor is integrated on the ventilation duct, which can analyze and judge the dust and water vapor accumulation in the duct, judge the load of the bracket, and perform maintenance and warranty in advance before exceeding the allowable value. Vibration, acceleration, and displacement sensors are set on the ventilation duct, and the operation status of the ventilation duct can be judged in real time through historical data analysis. The filter mechanism is improved, which usually plays a good filtering role. In the event of serious blockage or fire, the filter can be automatically opened to quickly exhaust smoke and ensure the safety of personnel. An automatic exhaust valve is added, which can automatically open the exhaust port according to the humidity in the pipeline, reduce water vapor accumulation, and ensure the stability of the pipeline operation environment. The tensioning mechanism is designed to effectively enhance the sealing effect between the filter mechanism and the outer shell and reduce the influence of ventilation duct vibration on the filter mechanism.

[0076] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. Underground garage ventilation duct, characterized in that: include: Support frame; A ventilation duct is installed on the support frame; A hanger for fixed installation is symmetrically arranged on the top of the support frame, and a gravity sensor and a displacement sensor are installed at the junction of the hanger and the external structure; The ventilation duct comprises an outer shell, a first baffle is provided at one end of the outer shell, an air inlet is installed on the first baffle, and a second baffle is provided at the other end of the outer shell, an air outlet is installed on the second baffle; A fan is provided on one side of the ventilation duct close to the air outlet, and the fan is connected to the air outlet; A sensor arrangement frame is arranged in the outer shell, and a vibration sensor and an acceleration sensor are arranged on the sensor arrangement frame.

2. The underground garage ventilation duct according to claim 1, characterized in that: The sensor arrangement frame is also provided with a humidity sensor; A plurality of exhaust valves are arranged at intervals at the bottom of the ventilation duct, and each exhaust valve is interlocked; The humidity sensor monitors the humidity in the ventilation duct, and when the humidity reaches a preset value, each exhaust valve is controlled to open for dehumidification.

3. The underground garage ventilation duct according to claim 1, characterized in that: The ventilation duct is provided with a filtering mechanism for filtering the airflow entering the ventilation duct.

4. The underground garage ventilation duct according to claim 3 is characterized in that: The filtering mechanism comprises a plurality of mounting frames, which are connected end to end in sequence, a rotating shaft is provided at the bottom of each mounting frame, a filtering frame is mounted on the rotating shaft, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected to the filtering frame, and the other end is connected to the mounting frame.

5. The underground garage ventilation duct according to claim 4, characterized in that: Pressure sensors for monitoring the pressure on the filter frame are installed on both sides of the filter frame.

6. The underground garage ventilation duct according to claim 3, characterized in that: The top of the filter mechanism is detachably connected to the outer shell through an upper connecting mechanism, and the bottom of the filter mechanism is detachably connected to the outer shell through a supporting mechanism.

7. The underground garage ventilation duct according to claim 6, characterized in that: The upper connecting mechanism comprises: a connecting sleeve and an upper fastening bolt; A mounting threaded hole is provided on the top of the outer shell, and the upper fastening bolt passes through the mounting threaded hole and is connected to the connecting sleeve, and the connecting sleeve is sleeved on the top of the filter mechanism.

8. The underground garage ventilation duct according to claim 6, characterized in that: The bottom of the outer shell is provided with an inlet for the filter mechanism to be inserted into the ventilation duct, and the supporting mechanism is arranged at the inlet; The supporting mechanism includes a supporting plate, which is U-shaped. A rectangular plug hole arranged opposite to the entrance is provided in the middle of the supporting plate. A lower sealing plate is inserted into the rectangular plug hole. The lower sealing plate includes a bottom plate and an upper protrusion arranged on the bottom plate. The bottom plate blocks the rectangular plug hole from the outside. The shape of the upper protrusion matches the entrance, and the upper protrusion abuts the bottom of the filtering mechanism.

9. The underground garage ventilation duct according to claim 8, characterized in that: The supporting mechanism also includes tensioning mechanisms respectively arranged at both ends of the supporting plate, and the tensioning mechanism includes a guide plate fixed to the end of the supporting plate and an elastic plate arranged on the inner wall of the guide plate; A tensioning bolt is provided in the middle of the guide plate, a sliding cavity is provided on each side of the entrance, an upper sliding hole is provided at the top of the sliding cavity, a lower sliding hole is provided at the bottom of the sliding cavity, a sliding block is slidably matched in the sliding cavity, an upper guide rod is fixedly connected to the upper part of the sliding block, the upper guide rod can slide along the upper sliding hole, an elastic sealing arc plate abutting against the outer wall of the bottom of the filtering mechanism is installed on the top of the upper guide rod close to the filtering mechanism, a rubber coating is provided on the surface of the elastic sealing arc plate, a lower guide rod is provided at the bottom of the sliding block, the lower guide rod can slide along the lower sliding hole, and a flexible spring is provided between the sliding block and the sliding block on the side of the sliding cavity close to the filtering mechanism; The inner wall of the elastic plate is provided with two steps respectively engaged with the side walls of the two lower guide rods facing away from the filtering mechanism; A groove is provided on the outer wall of the elastic plate, and the end of the tensioning bolt abuts against the groove after passing through the guide plate.

10. The underground garage ventilation duct according to claim 8, characterized in that: The supporting mechanism also includes tensioning mechanisms respectively arranged at both ends of the supporting plate, and the tensioning mechanism includes a guide plate fixed to the end of the supporting plate and an elastic plate arranged on the inner wall of the guide plate; A tensioning bolt is provided in the middle of the guide plate, a sliding cavity is provided on each side of the entrance, an upper sliding hole is provided at the top of the sliding cavity, a lower sliding hole is provided at the bottom of the sliding cavity, a sliding block is slidably matched in the sliding cavity, an upper guide rod is fixedly connected to the upper part of the sliding block, the upper guide rod can slide along the upper sliding hole, an elastic sealing arc plate abutting against the outer wall of the bottom of the filtering mechanism is installed on the top of the upper guide rod close to the filtering mechanism, a rubber coating is provided on the surface of the elastic sealing arc plate, a lower guide rod is provided at the bottom of the sliding block, the lower guide rod can slide along the lower sliding hole, and a flexible spring is provided between the sliding block and the sliding block on the side of the sliding cavity close to the filtering mechanism; The inner wall of the elastic plate is provided with two steps respectively engaged with the side walls of the two lower guide rods facing away from the filtering mechanism; A matching nut is provided in the middle of the elastic plate. The matching nut is supported on the inner wall of the elastic plate. The matching nut is threadedly connected with a tensioning bolt. The tensioning bolt abuts against the bottom of the filter mechanism.

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