A safety ventilation device applied to an integrated pipe gallery

Abstract

The present application relates to a safety ventilation device applied to an integrated pipe gallery, belonging to the technical field of integrated pipe galleries. It includes a plurality of partition members arranged in the integrated pipe gallery, which are evenly distributed along the length direction of the integrated pipe gallery. The partition members are used to divide the integrated pipe gallery into multiple independent chambers. It also includes multiple groups of ventilation components, which correspond to the independent chambers one by one. Each ventilation component includes an air inlet pipe and an air outlet pipe. Both the air inlet pipe and the air outlet pipe are communicated with the integrated pipe gallery. The air outlet of the air inlet pipe is located at the bottom of the integrated pipe gallery, the air inlet of the air outlet pipe is communicated with the top of the integrated pipe gallery, and the air outlet is located outside the integrated pipe gallery. A blower is arranged in the air inlet pipe, and a negative pressure machine is arranged in the air outlet pipe. The negative pressure machine is used to create a negative pressure environment in the air outlet pipe and push the air in the independent chamber to be discharged through the air outlet pipe. An air purifier for purifying the discharged air is arranged at the air outlet of the air outlet pipe. The present application has the advantage of improving the air exchange effect of the integrated pipe gallery.

Description

Technical Field

[0001] The present application relates to the technical field of utility tunnels, and in particular to a safety ventilation device applied to utility tunnels. Background Art

[0002] An underground utility tunnel is a public tunnel underground in a city for centralized laying of various municipal pipelines (such as electricity, communication (including monitoring lines), radio and television, water supply, drainage, heating, gas, fire pipes, traffic signals, and emergency optical cables). Its construction is crucial for solving urban problems, enhancing functions, and promoting economic growth.

[0003] Due to its underground location and diverse pipelines in the tunnel, and during the operation of municipal pipelines, such as electricity, etc., it will cause the temperature in the utility tunnel to rise. After the temperature in the utility tunnel rises, it will cause the lack of oxygen and the generation of harmful gases in the tunnel. To ensure the normal operation of the utility tunnel and personnel maintenance, an appropriate ventilation system needs to be designed (the utility tunnel ventilation system is a system used to maintain the air quality and temperature in the tunnel. It realizes the air circulation and ventilation in the tunnel by introducing fresh air and exhausting dirty air. This system usually consists of a fan, air treatment equipment, a duct network, and a control system, etc., to ensure the air circulation, cleanliness, and comfort in the tunnel).

[0004] However, when the operation and maintenance personnel enter the utility tunnel to repair the municipal pipelines, the ventilation system conducts air exchange operations in the utility tunnel. However, due to the large length of the utility tunnel during the air exchange operation, the air exchange effect of the utility tunnel is relatively average. Summary of the Invention

[0005] To improve the air exchange effect of the utility tunnel, the present application provides a safety ventilation device applied to the utility tunnel.

[0006] The safety ventilation device applied to the utility tunnel provided by the present application adopts the following technical solutions:

[0007] A safety ventilation device applied to a utility tunnel includes a plurality of partition members arranged in the utility tunnel. The partition members are evenly distributed along the length direction of the utility tunnel. The partition members are used to divide the utility tunnel into a plurality of independent chambers. It also includes a plurality of groups of ventilation components. The ventilation components correspond to the independent chambers one by one. The ventilation component includes an air inlet pipe and an air outlet pipe. Both the air inlet pipe and the air outlet pipe are communicated with the utility tunnel. The air outlet of the air inlet pipe is located at the bottom of the utility tunnel. The air inlet of the air outlet pipe is communicated with the top of the utility tunnel, and the air outlet is located outside the utility tunnel. A blower is arranged in the air inlet pipe, and a negative pressure machine is arranged in the air outlet pipe. The negative pressure machine is used to create a negative pressure environment in the air outlet pipe and push the air in the independent chamber to be discharged through the air outlet pipe. An air purifier for purifying the discharged air is arranged at the air outlet of the air outlet pipe.

[0008] Optionally, the partition member includes a first partition member and a second partition member. A plurality of the first partition members are provided and located between the municipal pipelines in the utility tunnel, and are used to partition both sides between the municipal pipelines. The second partition member is located in the middle of the utility tunnel and between the municipal pipelines on both sides. The first partition member and the second partition member jointly partition the utility tunnel.

[0009] Optionally, the first partition member includes a first airbag disposed between the municipal pipelines and crimping plates located on both sides of the first airbag. The contact surface of the crimping plate with the municipal pipeline is consistent with the shape of the municipal pipeline. The first partition member further includes a first air pump communicated with the first airbag. The crimping plate is slidably disposed between the municipal pipelines. The first partition member further includes a first driving member for driving the crimping plates to move towards each other to compress the first airbag in the inflated state, so that the edge of the first airbag enters the lateral gap of the municipal pipeline.

[0010] Optionally, the second partition member includes mounting rods disposed in the utility tunnel. There are two mounting rods, and the two mounting rods are located on both sides of the center line of the utility tunnel and are in contact with the municipal pipelines on both sides. The crimping plates are disposed on the surfaces of the mounting rods in contact with the municipal pipelines. The second partition member further includes a winding shaft disposed between the two mounting rods and embedded in the top of the utility tunnel. A sealing cloth is wound on the winding shaft. The vertical edges of the sealing cloth are clamped in the mounting grooves opened on the mounting rods. The second partition member further includes a laying member for pulling the sealing cloth to be laid along the mounting rods to partition the utility tunnel.

[0011] Optionally, the laying member includes a first motor disposed at the bottom of the utility tunnel. A connecting rope is wound on the output shaft of the first motor. The free end of the connecting rope is fixedly disposed at the end of the sealing cloth. The connecting rope is located in the mounting groove. A winding cavity is opened at the bottom of the utility tunnel. The first motor is located in the winding cavity. An access gap communicated with the winding cavity is opened at the bottom of the utility tunnel. The sealing cloth enters the winding cavity through the access gap.

[0012] Optionally, a sealing liquid is disposed in the winding cavity, and the end of the sealing cloth is immersed below the liquid level of the sealing liquid.

[0013] Optionally, a second airbag is disposed on the mounting rod and in the mounting groove. The second airbag is strip-shaped. The second airbag is located on both sides of the sealing cloth. A second air pump communicated with the second airbag is disposed on the mounting rod. After the sealing cloth partitions the utility tunnel, the second airbag is inflated and abuts against the sealing cloth.

[0014] Optionally, a connecting pipe is arranged in the utility tunnel. The connecting pipe is in a vertical state and its end is close to the bottom wall of the utility tunnel. The connecting pipe is communicated with the air outlet pipe. The connecting pipe is hollow and has openings at both ends. A plurality of through holes are formed in the connecting pipe, and the through holes are formed along the circumferential and longitudinal directions of the connecting pipe.

[0015] Optionally, the connecting pipe is rotatably arranged at the end of the air outlet pipe. The rotation axis of the connecting pipe is coaxial with the air outlet pipe. A scraping plate is arranged on the connecting pipe. When the connecting pipe rotates, the scraping plate drives the air in the independent chamber to rotate and flow into the connecting pipe.

[0016] Optionally, the connecting pipe is hinged at the end of the air outlet pipe. The hinge axis of the connecting pipe is parallel to the bottom of the utility tunnel. A second driving member is arranged in the utility tunnel to drive the connecting pipe to rotate and fit against the top of the utility tunnel.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. When it is necessary to repair the municipal pipelines in the utility tunnel, first, the harmful gases in the utility tunnel are discharged. Before the harmful gases are discharged, the utility tunnel is partitioned by a partitioning member. The partitioning member divides the utility tunnel into multiple independent chambers. Then, the negative pressure machine in the air outlet pipe is started. The negative pressure machine forms a certain degree of negative pressure state in the air outlet pipe. Under the action of negative pressure, the gas in the independent chamber is sucked into the air outlet pipe, so as to discharge the harmful gases and the air that has been in a closed state for a long time in the independent chamber. Then, the blower is started. The blower injects the outside air into the independent chamber through the air inlet pipe. The gas injected into the independent chamber stays and then is discharged through the air outlet pipe. During this process, the newly injected air washes the gas in the independent chamber, thereby improving the air quality in the independent chamber and further improving the ventilation effect of the utility tunnel;

[0019] 2. The air in the air inlet pipe is injected into the independent chamber from the bottom of the utility tunnel. The injected air rises from the bottom to the top. During this process, it is convenient to drive the harmful gases in the independent chamber to gradually rise and be discharged through the air outlet pipe, further improving the ventilation effect of the utility tunnel; further, the injected air rises from the bottom of the utility tunnel, which is convenient for maintenance personnel to be in fresh air during subsequent municipal pipeline maintenance, thereby improving the safety of the maintenance personnel; further, when the maintenance personnel cannot stand due to harmful gases, the maintenance personnel can squat down and approach the air inlet of the air inlet pipe, further improving the safety of the maintenance personnel;

[0020] 3. Under the action of the partition member, the integrated pipe gallery is divided into multiple independent chambers, and the air in the independent chambers is processed. Compared with the air treatment in the entire integrated pipe gallery, the treatment efficiency and effect of harmful gases are improved; the harmful gases discharged from the independent chambers pass through the air purifier, and the air purifier treats the harmful gases, thereby reducing the pollution of harmful gases to the atmosphere and improving environmental protection. Description of the Drawings

[0021] Figure 1 is a schematic diagram of the overall structure of a safety ventilation device applied to an integrated pipe gallery according to an embodiment of the present application;

[0022] Figure 2 is a cross-sectional view of a safety ventilation device applied to an integrated pipe gallery according to an embodiment of the present application;

[0023] Figure 3 is a schematic diagram of the use of a partition member in a safety ventilation device applied to an integrated pipe gallery according to an embodiment of the present application;

[0024] Figure 4 is Figure 3 an enlarged schematic view of part A in

[0025] Figure 5 is Figure 2 an enlarged schematic view of part B in

[0026] Figure 6 is Figure 2 an enlarged schematic view of part C in

[0027] Figure 7 is a cross-sectional view of an air outlet pipe in a safety ventilation device applied to an integrated pipe gallery according to an embodiment of the present application;

[0028] Figure 8 is Figure 7 an enlarged schematic view of part D in

[0029] Description of the Reference Numerals: 1, integrated pipe gallery;

[0030] 2, partition member;

[0031] 21, first partition member; 211, first airbag; 212, crimping plate; 213, first air pump; 214, second motor; 215, bidirectional lead screw;

[0032] 22, second partition member; 221, mounting rod; 222, winding shaft; 223, sealing cloth; 224, first motor; 225, connecting rope; 226, winding rod;

[0033] 3. Independent chamber; 4. Air inlet pipe; 5. Air outlet pipe; 6. Air supply pipe; 7. Ventilation opening; 8. Blower; 9. Negative pressure machine; 10. Installation groove; 11. Winding chamber; 12. Entrance notch; 13. Second airbag; 14. Second air pump; 15. Connecting pipe; 16. Through hole; 17. Ring; 18. Third motor; 19. Driving wheel; 20. Bellows; 23. Worm gear; 24. Municipal pipeline; 25. Fourth motor; 26. Worm. Detailed implementation mode

[0034] The following further elaborates on this application in conjunction with the attached Figure 1-8 drawings.

[0035] The embodiment of this application discloses a safety ventilation device applied to an integrated pipe gallery. Referring to Figure 1 and Figure 2 , the safety ventilation device of the integrated pipe gallery includes a plurality of partition members 2 arranged in the integrated pipe gallery 1. The partition members 2 are evenly distributed along the length direction of the integrated pipe gallery 1. The partition members 2 are used to divide the integrated pipe gallery 1 into a plurality of independent chambers 3. It also includes multiple groups of ventilation components, and the ventilation components correspond to the independent chambers 3 one by one. The ventilation component includes an air inlet pipe 4 and an air outlet pipe 5. Both the air inlet pipe 4 and the air outlet pipe 5 are communicated with the integrated pipe gallery 1. The air outlet of the air inlet pipe 4 is located at the bottom of the integrated pipe gallery 1. Further, an air supply pipe 6 is arranged outside the integrated pipe gallery 1. The air supply pipe 6 is communicated with the air inlet pipe 4. The air supply pipe 6 is bent along the outside of the integrated pipe gallery 1 to the bottom of the integrated pipe gallery 1. The air supply pipe 6 is provided with a ventilation opening 7 at the bottom of the integrated pipe gallery 1. The bottom of the integrated pipe gallery 1 is provided with an air supply opening communicated with the ventilation opening 7. The air inlet of the air outlet pipe 5 is communicated with the top of the integrated pipe gallery 1, and the air outlet is located outside the integrated pipe gallery 1. A blower 8 is arranged in the air inlet pipe 4, and a negative pressure machine 9 is arranged in the air outlet pipe 5. The negative pressure machine 9 is used to create a negative pressure environment in the air outlet pipe 5 and push the air in the independent chamber 3 to be discharged through the air outlet pipe 5. An air purifier for purifying the discharged air is arranged at the air outlet of the air outlet pipe 5.

[0036] When it is necessary to repair the municipal pipelines 24 in the utility tunnel 1, first, the harmful gases in the utility tunnel 1 are discharged. Before the harmful gases are discharged, the utility tunnel 1 is partitioned by a partition member 2 first. The partition member 2 divides the utility tunnel 1 into multiple independent chambers 3. Subsequently, the negative pressure machine 9 in the air outlet pipe 5 is started. The negative pressure machine 9 forms a certain degree of negative pressure state in the air outlet pipe 5. Under the action of negative pressure, the gas in the independent chamber 3 is sucked into the air outlet pipe 5, so as to discharge the harmful gases and the air that has been in a closed state for a long time in the independent chamber 3. Subsequently, the blower 8 is started. The blower 8 injects the outside air into the independent chamber 3 through the air inlet pipe 4. The gas injected into the independent chamber 3 stays and then is discharged through the air outlet pipe 5. During this process, the newly injected air washes the gas in the independent chamber 3 again, thereby improving the air quality in the independent chamber 3 and further improving the ventilation effect of the utility tunnel 1.

[0037] Refer to Figure 2 , because the municipal pipelines 24 are usually installed on both sides of the utility tunnel 1, the middle part of the utility tunnel 1 is a maintenance passage, and under the action of the municipal pipelines 24, there is a certain obstacle to the partition of the utility tunnel 1. Therefore, in the embodiment of the present application, the partition member 2 includes a first partition member 21 and a second partition member 22. There are multiple first partition members 21 and they are located between the municipal pipelines 24 in the utility tunnel 1, and are used to partition both sides between the municipal pipelines 24. The multiple first partition members 21 are arranged in the vertical direction. The second partition member 22 is located in the middle of the utility tunnel 1 and between the municipal pipelines 24 on both sides. The first partition member 21 and the second partition member 22 jointly partition the utility tunnel 1. The first partition member 21 partitions the gap between the municipal pipelines 24, and the second partition member 22 blocks the maintenance passage of the utility tunnel 1, thereby partitioning the utility tunnel 1. The operation is simple and convenient.

[0038] Refer to Figure 2 and Figure 3, in the embodiment of the present application, the first partition member 21 includes a first airbag 211 disposed between the municipal pipelines 24 and crimping plates 212 located on both sides of the first airbag 211. The first airbag 211 is located between the vertical municipal pipelines 24. The contact surface of the crimping plate 212 with the municipal pipeline 24 is consistent with the shape of the municipal pipeline 24. The first partition member 21 further includes a first air pump 213 communicated with the first airbag 211. The crimping plate 212 is slidably disposed between the municipal pipelines 24. When partitioning the gap between the municipal pipelines 24, the first air pump 213 is started. The first air pump 213 injects the air in the utility tunnel 1 into the first airbag 211. The volume of the first airbag 211 gradually increases. The first airbag 211 fills the gap between the municipal pipelines 24 to block the gap between the vertical municipal pipelines 24, and the operation is simple and convenient. Further, when the first air pump 213 inflates the first airbag 211, the extracted air is the harmful gas in the utility tunnel 1 and the air that has been sealed for a long time, further reducing the possibility of harmful gas being discharged outdoors, thereby reducing the damage to the environment. Under the action of the crimping plate 212, the expansion direction of the first airbag 211 is limited, which facilitates the first airbag 211 to partition the space between the municipal pipelines 24.

[0039] Refer to Figure 3 and Figure 4 , when the volume of the first airbag 211 increases, due to the existence of a certain small gap between the horizontal municipal pipelines 24, it is difficult for the first airbag 211 to enter the above-mentioned gap. Therefore, in the embodiment of the present application, the first partition member 21 further includes a first driving member for driving the crimping plates 212 to move towards each other to compress the first airbag 211 in the inflated state, so that the edge of the first airbag 211 enters the horizontal gap of the municipal pipeline 24. When the first airbag 211 is in the inflated state and the vertical municipal pipeline 24 is partitioned, the first driving member is used to drive the crimping plates 212 on both sides of the first airbag 211 to move towards each other. The crimping plates 212 slide to compress the first airbag 211. The compression of the first airbag 211 enables the edge of the first airbag 211 to enter the gap between the municipal pipelines 24, further improving the partitioning effect between the municipal pipelines 24.

[0040] Refer to Figure 2 , Figure 5 and Figure 6, in the embodiment of the present application, the second partition member 22 includes mounting rods 221 fixedly arranged in the utility tunnel 1. The mounting rods 221 are perpendicular to the bottom wall of the utility tunnel 1. There are two mounting rods 221, and the two mounting rods 221 are located on both sides of the center line of the utility tunnel 1 and are in contact with the municipal pipelines 24 on both sides. The pressing plate 212 is arranged on the surface of the mounting rod 221 in contact with the municipal pipeline 24. The second partition member 22 further includes a winding shaft 222 arranged between the two mounting rods 221 and embedded in the top of the utility tunnel 1. The winding shaft 222 is rotatably arranged on the top of the utility tunnel 1, and a sealing cloth 223 is wound on the winding shaft 222. Further, a torsion spring is arranged on the winding shaft 222. One side of the torsion spring is arranged on the winding shaft 222, and the other side is arranged on the top of the utility tunnel 1. The vertical edge of the sealing cloth 223 is clamped in the mounting groove 10 opened on the mounting rod 221. The second partition member 22 further includes a laying member for pulling the sealing cloth 223 to be laid along the mounting rod 221 to partition the utility tunnel 1;

[0041] Referring to Figure 2 , Figure 5 and Figure 6 , the laying member includes a first motor 224 arranged at the bottom of the utility tunnel 1. A connecting rope 225 is wound on the output shaft of the first motor 224. The free end of the connecting rope 225 is fixedly arranged at the end of the sealing cloth 223. Further, a winding rod 226 is fixedly arranged at the end of the sealing cloth 223, and the connecting rope 225 is fixedly connected to the winding rod 226. The connecting rope 225 is located in the mounting groove 10; a winding cavity 11 is opened at the bottom of the utility tunnel 1, the first motor 224 is located in the winding cavity 11, an access notch 12 communicating with the winding cavity 11 is opened at the bottom of the utility tunnel 1, and the sealing cloth 223 enters the winding cavity 11 through the access notch 12.

[0042] When partitioning the maintenance passage of the utility tunnel 1, start the first motor 224. The first motor 224 winds the connecting rope 225. The winding of the connecting rope 225 drives the winding rod 226 to move downward. The winding rod 226 drives the sealing cloth 223 to move downward and enter the winding cavity 11, thereby partitioning the maintenance passage of the utility tunnel 1; the edge of the sealing cloth 223 is located in the mounting groove 10, reducing the possibility that the sealing cloth 223 is concave inward toward the inner side of the independent chamber 3 under the action of air pressure when the gas in the independent chamber 3 is discharged, thereby improving the partitioning effect of the sealing cloth 223 on the utility tunnel 1; and under the action of the torsion spring, it is convenient to wind the sealing cloth 223 on the winding shaft 222.

[0043] Referring to Figure 3 and Figure 4, in the embodiment of the present application, the first driving member includes a second motor 214 disposed on the mounting rod 221 and a bidirectional lead screw 215 disposed on the output shaft of the second motor 214. The length direction of the bidirectional lead screw 215 is parallel to the bottom wall of the integrated pipe gallery 1, and the crimping plates 212 on both sides are threadedly connected to the threaded sections on both sides of the bidirectional lead screw 215; when compressing the first airbag 211, start the second motor 214, and the second motor 214 drives the bidirectional lead screw 215 to rotate. The rotation of the bidirectional lead screw 215 drives the crimping plates 212 to move towards each other to compress the first airbag 211, and the operation is simple and convenient; further, under the action of the bidirectional lead screw 215, it is convenient to fix the crimping plates 212 at the moved positions, so as to facilitate the continuous compression of the first airbag 211 by the crimping plates 212.

[0044] Refer to Figure 2 , Figure 5 and Figure 6 , to improve the partition effect of the sealing cloth 223 on the maintenance passage of the integrated pipe gallery 1, sealing liquid is provided in the winding cavity 11, and the end of the sealing cloth 223 is immersed below the liquid level of the sealing liquid; under the action of the sealing liquid, the gap between the end of the sealing cloth 223 and the bottom of the winding cavity 11 is eliminated, thereby reducing the possibility of gas entering the independent chamber 3 through the above gap and improving the partition effect of the independent chamber 3.

[0045] Refer to Figure 2 and Figure 5 , to further reduce the possibility of the sealing cloth 223 falling off from the installation groove 10, a second airbag 13 is provided on the mounting rod 221 and within the installation groove 10. The surface of the second airbag 13 facing the side wall of the installation groove 10 is dot-fixed on the side wall of the installation groove 10. The second airbag 13 is in a long strip shape and is located on both sides of the sealing cloth 223. A second air pump 14 communicated with the second airbag 13 is provided on the mounting rod 221. After the sealing cloth 223 partitions the integrated pipe gallery 1, the second airbag 13 is inflated and abuts against the sealing cloth 223; after the end of the sealing cloth 223 enters the winding cavity 11, start the second air pump 14, and the second air pump 14 injects air into the second airbag 13. The second airbag 13 expands and presses between the sealing cloth 223 and the side wall of the installation groove 10, thereby fixing the sealing cloth 223 in the installation groove 10 and reducing the possibility of the sealing cloth 223 falling off due to accidental air pressure; and under the action of the second airbag 13, the gap between the sealing cloth 223 and the bottom of the installation groove 10 is blocked, thereby improving the partition effect of the sealing cloth 223 on the integrated pipe gallery 1.

[0046] Refer to Figure 2 , Figure 7 and Figure 8, to improve the removal effect of harmful gases in the independent chamber 3, a connecting pipe 15 is provided in the integrated pipe gallery 1. The connecting pipe 15 is in a vertical state and its end is close to the bottom wall of the integrated pipe gallery 1. The connecting pipe 15 is communicated with the air outlet pipe 5. The connecting pipe 15 is hollow and has openings at both ends. A plurality of through holes 16 are formed in the connecting pipe 15, and the through holes 16 are formed along the circumferential and longitudinal directions of the connecting pipe 15. Under the action of the connecting pipe 15, the gas in the independent chamber 3 enters the connecting pipe 15 through the through holes 16 and is discharged through the air outlet pipe 5. Under the action of the connecting pipe 15, the air inlet of the air outlet pipe 5 is lowered to the bottom of the integrated pipe gallery 1, and under the action of the circumferential through holes 16, it is convenient for the air in each height plane in the integrated pipe gallery 1 to enter the connecting pipe 15 through the through holes 16, further improving the discharge effect of harmful gases.

[0047] Referring to Figure 2 , Figure 7 and Figure 8 , in the embodiment of the present application, the connecting pipe 15 is rotatably arranged at the end of the air outlet pipe 5, and the rotation axis of the connecting pipe 15 is coaxial with the air outlet pipe 5. Further, a ring 17 is coaxially arranged at the end of the air outlet pipe 5, and the connecting pipe 15 is arranged on the ring 17 and communicated with the ring 17. Further, a third motor 18 is fixedly arranged on the air outlet pipe 5, a driving wheel 19 is arranged on the output shaft of the third motor 18, the driving wheel 19 is in circumferential contact with the ring 17, and a scraper is arranged on the connecting pipe 15. When the connecting pipe 15 rotates, the scraper drives the air in the independent chamber 3 to rotate and flow into the connecting pipe 15.

[0048] When harmful gases enter the connecting pipe 15, the third motor 18 is started. The third motor 18 drives the driving wheel 19 to rotate. The driving wheel 19 rotates to drive the ring 17 to rotate. The ring 17 rotates to drive the air outlet pipe 5 to rotate. The rotation of the air outlet pipe 5 adjusts the position of the through holes 16 circumferentially, thereby facilitating the input of harmful gases in all directions in the independent chamber 3 into the connecting pipe 15, thus improving the discharge effect of harmful gases; and under the action of the scraper, the rotation of the scraper drives the air in the independent chamber 3 to rotate circumferentially, further facilitating the entry of harmful gases in the independent chamber 3 into the connecting pipe 15.

[0049] Referring to Figure 2 , Figure 7 and Figure 8, to reduce the obstruction of the connecting pipe 15 to the maintenance passage, in the embodiment of the present application, the connecting pipe 15 is hingedly arranged at the end of the air outlet pipe 5. The hinge axis of the connecting pipe 15 is parallel to the bottom of the utility tunnel 1. The connecting pipe 15 is hinged on the ring 17 and is hinged on the ring 17 through the mounting shaft. Further, the connecting pipe 15 is hermetically connected to the ring 17 through the bellows 20 and is in communication with each other. A second driving member for driving the connecting pipe 15 to rotate and fit on the top of the utility tunnel 1 is arranged in the utility tunnel 1. The second driving member includes a fourth motor 25 arranged on the ring 17. A worm 26 is arranged on the output shaft of the fourth motor 25, and a worm gear 23 meshing with the worm 26 is arranged on the mounting shaft. When maintaining the municipal pipeline 24, the fourth motor 25 is started. The fourth motor 25 drives the worm 26 to rotate. The rotation of the worm 26 drives the worm gear 23 to rotate. The rotation of the worm gear 23 drives the mounting shaft to rotate. The rotation of the mounting shaft drives the connecting pipe 15 to rotate, so that the connecting pipe 15 rotates towards the top of the utility tunnel 1, thereby avoiding the obstruction of the connecting pipe 15 to the maintenance personnel.

[0050] The implementation principle of a safety ventilation device applied to a utility tunnel in an embodiment of the present application is as follows:

[0051] When it is necessary to maintain the municipal pipeline 24 in the utility tunnel 1, first, the harmful gases in the utility tunnel 1 are discharged. Before the harmful gases are discharged, the utility tunnel 1 is first partitioned by the first airbag 211 and the sealing cloth 223. The partition member 2 divides the utility tunnel 1 into multiple independent chambers 3. Subsequently, the negative pressure machine 9 in the air outlet pipe 5 is started. The negative pressure machine 9 forms a certain degree of negative pressure state in the air outlet pipe 5. Under the action of negative pressure, the gas in the independent chamber 3 is sucked into the air outlet pipe 5, so as to discharge the harmful gases and the air in a closed state for a long time in the independent chamber 3. Subsequently, the blower 8 is started. The blower 8 injects the outside air into the independent chamber 3 through the air inlet pipe 4. The gas injected into the independent chamber 3 stays and then is discharged through the air outlet pipe 5. During this process, the newly injected air washes the gas in the independent chamber 3 again, thereby improving the air quality in the independent chamber 3 and further improving the ventilation effect of the utility tunnel 1.

[0052] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A safety ventilation device applied to a comprehensive pipe gallery, characterized in that: The invention comprises a plurality of partitions (2) arranged in an integrated pipe gallery (1), wherein the partitions (2) are evenly distributed along the length direction of the integrated pipe gallery (1), and the partitions (2) are used to divide the integrated pipe gallery (1) into a plurality of independent chambers (3). The invention also comprises a plurality of ventilation components, wherein the ventilation components correspond to the independent chambers (3) one by one, and the ventilation components comprise an air inlet pipe (4) and an air outlet pipe (5), wherein the air inlet pipe (4) and the air outlet pipe (5) are both connected to the integrated pipe gallery (1), and the air outlet of the air inlet pipe (4) is located at a position At the bottom of the integrated pipe gallery (1), the air inlet of the air outlet pipe (5) is connected to the top of the integrated pipe gallery (1), and the air outlet is located outside the integrated pipe gallery (1). A blower (8) is arranged in the air inlet pipe (4), and a negative pressure machine (9) is arranged in the air outlet pipe (5). The negative pressure machine (9) is used to create a negative pressure environment in the air outlet pipe (5) and push the air in the independent chamber (3) to be discharged through the air outlet pipe (5). The air outlet of the air outlet pipe (5) is provided with an air purifier for purifying the discharged air. The partition (2) comprises a first partition (21) and a second partition (22); the first partition (21) is provided with a plurality of partitions and is located between the municipal pipelines (24) of the integrated pipe gallery (1) and is used to partition the municipal pipelines (24) on both sides; the second partition (22) is located in the middle of the integrated pipe gallery (1) and between the municipal pipelines (24) on both sides; the first partition (21) and the second partition (22) jointly partition the integrated pipe gallery (1); The first partition member (21) comprises a first airbag (211) arranged between the municipal pipelines (24) and a crimping plate (212) located on both sides of the first airbag (211); the contact surface between the crimping plate (212) and the municipal pipeline (24) is consistent with the shape of the municipal pipeline (24); the first partition member (21) further comprises a first air pump (213) connected to the first airbag (211); the crimping plate (212) is slidably arranged between the municipal pipelines (24); the first partition member (21) further comprises a first driving member for driving the crimping plates (212) to move towards each other to compress the first airbag (211) in an inflated state, so that the edge of the first airbag (211) enters the transverse gap of the municipal pipeline (24).

2. A safety ventilation device for use in a comprehensive pipe gallery according to claim 1, characterized in that: The second partition member (22) comprises a mounting rod (221) arranged in the integrated pipe gallery (1), wherein two mounting rods (221) are arranged, and the two mounting rods (221) are located on both sides of the center line of the integrated pipe gallery (1) and abut against the municipal pipelines (24) on both sides, and the crimping plate (212) is arranged on the surface of the mounting rod (221) abutting against the municipal pipeline (24). The second partition member (22) further comprises a winding shaft (222) arranged between the two mounting rods (221) and embedded in the top of the integrated pipe gallery (1), and a sealing cloth (223) is wound on the winding shaft (222), and the vertical edge of the sealing cloth (223) is clamped in the mounting groove (10) provided in the mounting rod (221). The second partition member (22) further comprises a laying member for pulling the sealing cloth (223) to be laid along the mounting rod (221) to partition the integrated pipe gallery (1).

3. A safety ventilation device for use in a comprehensive pipe gallery according to claim 2, characterized in that: The laying member comprises a first motor (224) arranged underground in the integrated pipe gallery (1); a connecting rope (225) is wound on the output shaft of the first motor (224); the free end of the connecting rope (225) is fixedly arranged on the end of the sealing cloth (223); the connecting rope (225) is located in the installation groove (10); a winding chamber (11) is opened underground in the integrated pipe gallery (1); the first motor (224) is located in the winding chamber (11); an entry notch (12) connected to the winding chamber (11) is opened at the bottom of the integrated pipe gallery (1); the sealing cloth (223) enters the winding chamber (11) through the entry notch (12).

4. A safety ventilation device for use in a comprehensive pipe gallery according to claim 3, characterized in that: Sealing liquid is provided in the winding chamber (11), and the end of the sealing cloth (223) is immersed below the liquid level of the sealing liquid.

5. A safety ventilation device for use in a comprehensive pipe gallery according to claim 2, characterized in that: A second airbag (13) is arranged on the installation rod (221) and located in the installation groove (10); the second airbag (13) is in the shape of an elongated strip and is located on both sides of the sealing cloth (223); a second air pump (14) connected to the second airbag (13) is arranged on the installation rod (221); after the sealing cloth (223) separates the integrated pipe gallery (1), the second airbag (13) is inflated and abuts against the sealing cloth (223).

6. A safety ventilation device for use in a comprehensive pipe gallery according to claim 1, characterized in that: A connecting pipe (15) is arranged in the integrated pipe gallery (1); the connecting pipe (15) is in a vertical state and its end is close to the bottom wall of the integrated pipe gallery (1); the connecting pipe (15) is connected to the air outlet pipe (5); the connecting pipe (15) is hollow and has openings at both ends; a plurality of through holes (16) are provided on the connecting pipe (15); the through holes (16) are opened along the circumference and length direction of the connecting pipe (15).

7. A safety ventilation device for use in a comprehensive pipe gallery according to claim 6, characterized in that: The connecting pipe (15) is rotatably arranged at the end of the air outlet pipe (5); the rotation axis of the connecting pipe (15) is coaxial with the air outlet pipe (5); a scraper is arranged on the connecting pipe (15); the scraper is used to drive the air in the independent chamber (3) to rotate and flow into the connecting pipe (15) when the connecting pipe (15) rotates.

8. A safety ventilation device for use in a comprehensive pipe gallery according to claim 6, characterized in that: The connecting pipe (15) is hingedly arranged at the end of the air outlet pipe (5), and the hinge axis of the connecting pipe (15) is parallel to the bottom of the integrated pipe gallery (1). A second driving member is arranged in the integrated pipe gallery (1) for driving the connecting pipe (15) to rotate and fit on the top of the integrated pipe gallery (1).

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