Intelligent detection and safety protection system for underground harmful gas

Abstract

The present application relates to the technical field of safety protection system, especially to an underground harmful gas intelligent detection safety protection system. It mainly aims at the problem that underground pipe trench is easy to generate, accumulate harmful gases such as methane, hydrogen sulfide and ammonia, and when the concentration of the harmful gases is in the explosion limit, it will cause explosion when meeting fire source or static electricity, which seriously damages the pipeline and threatens the city operation and personal safety. The technical scheme is as follows: including mutually connected control module and remote communication module, the remote communication module is wirelessly connected to the cloud, the cloud is connected with a control center and a personal terminal, the control center and the personal terminal are mutually connected; the servo motor connected with the control module and multiple groups of harmful gas sensors, the harmful gas sensor is used for monitoring the harmful gas concentration in the pipe trench and transmitting data to the control center in real time; the storage battery. The present application can guarantee the safety of the pipeline in the underground pipe trench, protect the safety of the ground buildings, vehicles and personnel, eliminate hidden dangers and reduce the risk of life and property loss.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety protection system, and particularly relates to an underground harmful gas intelligent detection safety protection system. BACKGROUND

[0002] In urban infrastructure, underground pipe trenches are widely distributed and undertake the task of laying various pipelines such as power, communication, water supply and drainage, which plays a crucial role in the normal operation of the city. However, due to its special environment, underground pipe trenches are prone to generate harmful gases such as methane, hydrogen sulfide and ammonia. This is mainly because there are various organic substances in the pipe trench, which will continuously generate harmful gases under the anaerobic decomposition of microorganisms, in addition, some sewage pipes, septic tanks and other pipes connected to the pipe trench will also become a source of harmful gases, continuously transporting into the pipe trench, causing the concentration of harmful gases in the pipe trench to gradually increase.

[0003] Methane, hydrogen sulfide and ammonia belong to flammable and explosive gases, and their explosion limit ranges are 4.4% to 15%, 4.3% to 46% and 15.4% to 28% (volume percentage) respectively. In actual situations, there are many possibilities for external fire or static electricity to enter the underground pipe trench, for example, during the construction of the ground around the pipe trench, the electric sparks generated by the construction equipment, the careless disposal of unextinguished cigarette butts, etc. may enter the pipe trench through the joint gap of the manhole cover or other opening parts. Once the concentration of harmful gases in the pipe trench is within the explosion limit range, an explosion will be quickly triggered, which will not only cause serious damage to various pipelines in the pipe trench, leading to power interruption, communication failure, water supply and drainage system paralysis and a series of problems, but also affect the normal operation of the city and pose a threat to ground buildings and pedestrian safety, causing immeasurable loss of life and property. In view of this, the present application proposes an underground harmful gas intelligent detection safety protection system. SUMMARY

[0004] The purpose of the present application is to solve the problem that underground pipe trenches are prone to generate and accumulate harmful gases, external fire or static electricity is easy to enter, and when the concentration is within the explosion limit, it will cause an explosion when meeting a fire source, causing serious damage to the pipelines and threatening the operation and safety of the city.

[0005] The technical solution of this invention: An intelligent underground hazardous gas detection and safety protection system, comprising an interconnected control module and a remote communication module, wherein the remote communication module is wirelessly connected to a cloud, the cloud is connected to a control center and a personal terminal, and the control center and the personal terminal are interconnected; a servo motor and multiple sets of hazardous gas sensors connected to the control module, the hazardous gas sensors being used to monitor the concentration of hazardous gases in the trench; a battery, the battery being used to power the hazardous gas sensors, the control module, the remote communication module, and the servo motor, the battery being connected to mains power, the battery being buried in the ground, and a battery box being provided on the outside of the battery; and a solar panel connected to the battery;

[0006] It also includes: a fixed cylinder; a first support ring fixedly connected to the inner side of the fixed cylinder; a cover plate disposed above the first support ring, the cover plate having multiple sets of exhaust holes; an exhaust mechanism disposed below the first support ring, the exhaust mechanism including an exhaust fan, the exhaust mechanism being used to exhaust harmful gases in the pipe trench after activation, the exhaust mechanism including a mounting plate and a servo motor, the servo motor being mounted on the bottom of the mounting plate, the output end of the servo motor penetrating the mounting plate and fixedly connected to the exhaust fan, a rubber sleeve being disposed at the position where the output end of the servo motor penetrates the mounting plate, the mounting plate having multiple sets of through holes; and an exhaust mechanism mounted on the first support ring. The sealing assembly below the mechanism is used to isolate harmful gases from electrical components. The sealing assembly includes a barrier box located outside the servo motor. The barrier box is a box-shaped structure with an open top. The control module and the remote communication module are both installed at the bottom of the mounting plate and are located inside the barrier box. The control module is connected to multiple sets of connecting wires. The connecting wires pass through the battery box and connect to the battery. The connecting wires pass through the barrier box and are fitted with rubber sleeves at the penetration points. Multiple sets of harmful gas sensors are installed on both sides of the barrier box, and the positions of the harmful gas sensors correspond to the through holes.

[0007] Optionally, the mounting plate has a fixing ring on its outer ring, the fixing ring has an L-shaped cross-section, the fixing ring is fixedly connected to the bottom of the fixing cylinder, the top of the fixing ring is fixedly connected to the first support ring, and a second support ring is provided below the mounting plate, the second support ring being fixedly connected to the inner side of the fixing ring.

[0008] Optionally, a support mesh plate is slidably connected in the first support ring, and multiple sets of mounting blocks are fixedly connected to the outer ring of the support mesh plate. Multiple sets of mounting grooves are opened on the first support ring, and the multiple sets of mounting grooves are distributed in a ring array. The multiple sets of mounting blocks are slidably connected in the multiple sets of mounting grooves respectively.

[0009] Optionally, the blocking box top is fixedly connected with a pressing plate, the pressing plate outer side is slidably connected with a positioning frame, and the positioning frame is fixedly connected to the mounting plate bottom.

[0010] Optionally, the blocking box outer side is slidably connected with two groups of positioning frames, the positioning frames are arranged in a "N" shape, the positioning frame cross section is an L-shaped structure, a plurality of groups of bolts are slidably connected to the positioning frame, the bolts are threadedly connected with threaded sleeves, the threaded sleeves are fixedly connected to the mounting plate bottom, and the pressing plate and the mounting plate are provided with a sealing gasket.

[0011] Optionally, the battery box top is fixedly connected with a stand, and the solar panel is mounted on the stand top.

[0012] Optionally, the servo motor, the battery, the remote communication module and the harmful gas sensor are electrically connected with the control module.

[0013] Optionally, the fixing cylinder outer side is provided with a positioning ring.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] The harmful gas sensor monitors the harmful gas concentration in the pipe trench in real time, and once the concentration is too high to reach the set threshold, the control module immediately starts the servo motor to drive the exhaust fan to rotate, and the harmful gas is discharged through the through hole and the exhaust hole, which can effectively reduce the risk of harmful gas accumulation in the pipe trench, avoid explosion caused by high concentration of harmful gas meeting fire source, protect the safety of various pipelines and surrounding facilities in the pipe trench, and reduce the influence on the normal operation of the city;

[0016] Further, through the setting of the sealing assembly, the harmful gas is prevented from being ignited by the servo motor electric spark, the positioning frame, the bolt and the threaded sleeve cooperate to extrude the pressing plate and the sealing gasket to improve the sealing performance, the rubber sleeve at the penetration position of the servo motor output end and the battery connection line also prevents the harmful gas from entering the dangerous area, the battery provides stable power supply, ensures the safe and stable operation of the whole system, and maximally reduces the possibility of safety accidents;

[0017] In summary, the present application can protect the safety of pipelines in the underground pipe trench, protect the safety of ground buildings, vehicles and personnel, eliminate hidden dangers, and reduce the risk of life and property loss. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A circuit schematic diagram of an underground harmful gas intelligent detection safety protection system is given;

[0019] Figure 2 A schematic diagram of an underground harmful gas intelligent detection safety protection system is given;

[0020] Figure 3 Structure diagram of fixing cylinder;

[0021] Figure 4 Structure diagram of fixing cylinder; Figure 2 Enlarged diagram of A in the middle.

[0022] Reference signs:

[0023] 1, fixing cylinder; 11, positioning ring;

[0024] 2, first supporting ring; 21, mounting groove;

[0025] 3, cover plate; 31, exhaust hole;

[0026] 4, supporting mesh plate; 41, mounting block;

[0027] 5, exhaust mechanism; 51, mounting plate; 52, servo motor; 53, exhaust fan; 54, through hole; 55, fixing ring; 56, second supporting ring;

[0028] 6, sealing assembly; 61, blocking box; 62, pressing plate; 63, positioning frame; 64, positioning bracket; 65, bolt; 66, threaded sleeve; 67, sealing gasket;

[0029] 7, battery; 71, battery box; 72, stand column; 73, solar panel;

[0030] 8, control module; 81, remote communication module; 82, connecting line; 9, harmful gas sensor. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0032] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0033] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] Embodiment:

[0037] As Figure 1 shown, the underground harmful gas intelligent detection safety protection system provided by the present application comprises a mutual connection control module 8 and a remote communication module 81, and the remote communication module 81 is wirelessly connected with a cloud; the cloud is connected with a control center and a personal terminal, and the control center and the personal terminal are mutually connected; a servo motor 52 connected with the control module 8 and a plurality of harmful gas sensors 9, the harmful gas sensors 9 are used for monitoring the harmful gas concentration in the pipe trench; a storage battery 7, the storage battery 7 is used for supplying power to the harmful gas sensors 9, the control module 8, the remote communication module 81 and the servo motor 52, and the storage battery 7 is connected with the commercial power; a solar panel 73 connected with the storage battery 7.

[0038] Further, please refer to Figure 2 and Figure 3 , the above safety protection system comprises a fixed cylinder 1, and a positioning ring 11 is arranged on the outer side of the fixed cylinder 1. Through the arrangement of the positioning ring 11, when the fixed cylinder 1 is fixed by being buried in concrete, the firmness is improved.

[0039] Further, the above safety protection system further comprises a first support ring 2 fixedly connected to the inner side of the fixed cylinder 1, a cover plate 3 arranged above the first support ring 2, and the first support ring 2 is used for supporting the cover plate 3. A plurality of exhaust holes 31 are formed in the cover plate 3, and the exhaust holes 31 are arranged to facilitate the exhaust of harmful gas below.

[0040] The first support ring 2 is slidably connected with a support net plate 4. The support net plate 4 prevents foreign matters from entering below while not hindering the discharge of harmful gas. The outer ring of the support net plate 4 is fixedly connected with a plurality of mounting blocks 41. A plurality of mounting grooves 21 are arranged in an annular array on the first support ring 2. The plurality of mounting blocks 41 are slidably connected in the plurality of mounting grooves 21. The mounting blocks 41 and the mounting grooves 21 facilitate the installation of the support net plate 4.

[0041] Specifically, the safety protection system further comprises an exhaust mechanism 5 arranged below the first support ring 2. The exhaust mechanism 5 comprises a discharge fan 53. The exhaust mechanism 5 is used to discharge the harmful gas in the pipe ditch after being started. The exhaust mechanism 5 comprises a mounting plate 51 and a servo motor 52. The servo motor 52 is installed at the bottom of the mounting plate 51. The output end of the servo motor 52 penetrates through the mounting plate 51 and is fixedly connected with the discharge fan 53. The servo motor 52 drives the discharge fan 53 to rotate after being started, which facilitates the discharge of the harmful gas. A rubber sleeve is arranged at the position where the output end of the servo motor 52 penetrates through the mounting plate 51, which prevents the harmful gas from being ignited by the electric spark generated when the servo motor 52 is started. A plurality of through holes 54 are arranged on the mounting plate 51, which facilitates the discharge of the harmful gas through the through holes 54. A fixing ring 55 is arranged at the outer ring of the mounting plate 51. The cross section of the fixing ring 55 is L-shaped structure. The fixing ring 55 is fixedly connected with the bottom of the fixed cylinder 1. The top of the fixing ring 55 is fixedly connected with the first support ring 2. The position of the fixing ring 55 is fixed. A second support ring 56 is arranged below the mounting plate 51. The second support ring 56 is fixedly connected with the inner side of the fixing ring 55. The position of the second support ring 56 is fixed, which is used to support the mounting plate 51.

[0042] Further, please refer to Figure 4The safety protection system comprises a sealing assembly 6 installed below the exhaust mechanism 5, which is used to isolate harmful gas from electrical elements. The sealing assembly 6 comprises a blocking box 61 arranged outside the servo motor 52, which is arranged in a box shape with an open top, and is used to isolate harmful gas. The top of the blocking box 61 is fixedly connected with a pressing plate 62, the outer side of the pressing plate 62 is slidingly connected with a positioning frame 63, the positioning frame 63 is fixedly connected to the bottom of the mounting plate 51, and the position of the positioning frame 63 is fixed, which is used to limit the pressing plate 62. The outer side of the blocking box 61 is slidingly connected with two groups of positioning racks 64, which are arranged in a "n" shape, the cross section of the positioning rack 64 is L-shaped structure, and the positioning rack 64 is used to push the pressing plate 62 upwards to extrude the sealing gasket 67, which is convenient to improve the sealing performance. A plurality of bolts 65 are slidingly connected to the positioning rack 64, and a plurality of threaded sleeves 66 are threadedly connected to the bolts 65, the plurality of threaded sleeves 66 are fixedly connected to the bottom of the mounting plate 51, and the positioning rack 64 is driven upwards to extrude the pressing plate 62 through the bolts 65 and the threaded sleeves 66. The sealing gasket 67 is arranged between the pressing plate 62 and the mounting plate 51, which is used to increase the sealing performance.

[0043] The battery 7 is buried in the ground, which is used to provide electric energy for driving the servo motor 52, the control module 8, the remote communication module 81 and the harmful gas sensor 9. The outer side of the battery 7 is provided with a battery box 71 for protecting the battery 7. The top of the battery box 71 is fixedly connected with a stand 72, and the solar panel 73 is installed on the top of the stand 72, which is convenient for the fixation of the solar panel 73. The solar panel 73 is arranged to receive sunlight and generate electric energy, which is stored in the battery 7. The battery 7 is also connected with the mains for ensuring the normal operation of the battery 7 in case of long-term overcast weather.

[0044] Further, the control module 8 and the remote communication module 81 are installed at the bottom of the mounting plate 51, and the control module 8 and the remote communication module 81 are arranged inside the blocking box 61. A plurality of connecting lines 82 are connected to the control module 8, and the connecting lines 82 penetrate the blocking box 61 and are provided with rubber sleeves at the penetration positions to prevent harmful gas from entering the blocking box 61 through the connecting lines 82. Two groups of harmful gas sensors 9 are installed on both sides of the blocking box 61, and the harmful gas sensors 9 correspond to the positions of the through holes 54. The harmful gas sensors 9 are used to monitor the concentration of harmful gas. The servo motor 52, the battery 7, the remote communication module 81 and the harmful gas sensor 9 are electrically connected with the control module 8, which is used to send signals to the control module 8 when the harmful gas sensor 9 detects that the concentration of harmful gas is too high. The control module 8 controls the servo motor 52 to discharge harmful gas, and the harmful gas data and discharge record are sent to the cloud through the remote communication module 81 for statistics.

[0045] In this embodiment, when the harmful gas sensor 9 detects that the harmful gas concentration is too high and reaches the set threshold value that needs to be discharged, a signal will be sent to the control module 8 immediately. After the control module 8 receives the signal, it controls the servo motor 52 connected thereto to start. The remote communication module 81 sends harmful gas data and discharge records to the cloud for statistics, synchronizes information to the control center through the cloud for unified management and analysis, and also pushes relevant data to personal terminals, so that relevant personnel can understand the harmful gas concentration and discharge situation in real time.

[0046] After the servo motor 52 starts, its output end drives the discharge fan 53 to rotate. The harmful gas in the pipe ditch is blown out through the multiple groups of through holes 54 on the mounting plate 51 under the action of the discharge fan 53. Since the fixed ring 55 at the outer circle of the mounting plate 51 is fixedly connected to the bottom of the fixed cylinder 1 and the top is fixed with the first support ring 2, and the second support ring 56 below the mounting plate 51 is fixed inside the fixed ring 55, the position of the mounting plate 51 and related components is stable, which ensures the normal progress of the discharge process. In this process, the support net plate 4 continuously prevents sundries from entering, and the exhaust hole 31 on the cover plate 3 provides an outlet for the final discharge of harmful gas to the outside.

[0047] During the entire working process, the sealing assembly 6 plays an important role. The blocking box 61 isolates the servo motor 52 from the harmful gas, preventing the harmful gas from being ignited by the electric spark generated when the servo motor 52 starts. The pressing plate 62 at the top of the blocking box 61 is fixed on the bottom of the mounting plate 51 by the positioning frame 63 connected on the outside, and the two groups of "n" shaped positioning frames 64 connected on the outside can be pushed upwards to extrude the sealing gasket 67 by cooperating with the threaded sleeve 66 fixedly connected to the bottom of the mounting plate 51 through the bolts 65 connected on the outside, further improving the sealing performance. At the same time, the positions where the output end of the servo motor 52 penetrates the mounting plate 51 and the connection line 82 penetrates the blocking box 61 are provided with rubber sleeves to prevent harmful gas from entering the dangerous area. The battery 7 provides the required power for the servo motor 52, the control module 8, the remote communication module 81, and the harmful gas sensor 9, ensuring the stable operation of the entire system. In case of long-term overcast weather, the battery 7 is connected to the mains to ensure continuous power supply and maintain normal operation of the system.

[0048] The above specific embodiments are only one optional embodiment of the present application, and based on the technical solutions of the present application and the related inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An intelligent detection and safety protection system for underground harmful gases, characterized in that, Including: A mutually connected control module (8) and a remote communication module (81), the remote communication module (81) being wirelessly connected to the cloud, the cloud being connected with a control center and a personal terminal, and the control center and the personal terminal being mutually connected; A servo motor (52) and multiple groups of harmful gas sensors (9) connected to the control module (8), the harmful gas sensors (9) being used to monitor the concentration of harmful gases in the trench; A storage battery (7) used to supply power to the harmful gas sensors (9), the control module (8), the remote communication module (81) and the servo motor (52), the storage battery (7) being connected to the mains power, the storage battery (7) being buried in the ground, and a battery box (71) being arranged outside the storage battery (7); A solar panel (73) connected to the storage battery (7); It further includes: A fixed cylinder (1); A first support ring (2) fixedly connected to the inside of the fixed cylinder (1), a cover plate (3) arranged above the first support ring (2), and multiple groups of exhaust holes (31) being opened on the cover plate (3); An exhaust mechanism (5) arranged below the first support ring (2), the exhaust mechanism (5) including an exhaust fan (53), the exhaust mechanism (5) being used to exhaust the harmful gases in the trench after being started, the exhaust mechanism (5) including a mounting plate (51) and a servo motor (52), the servo motor (52) being installed at the bottom of the mounting plate (51), the output end of the servo motor (52) penetrating through the mounting plate (51) and being fixedly connected to the exhaust fan (53), a rubber sleeve being arranged at the position where the output end of the servo motor (52) penetrates through the mounting plate (51), and multiple groups of through holes (54) being opened on the mounting plate (51); A sealing component (6) installed below the exhaust mechanism (5), the sealing component (6) being used to isolate harmful gases from electrical components, the sealing component (6) including a barrier box (61) arranged outside the servo motor (52), the barrier box (61) being arranged in a box shape with an open top, a pressing plate (62) being fixedly connected to the top of the barrier box (61), a positioning frame (63) being slidably connected to the outside of the pressing plate (62), the positioning frame (63) being fixedly connected to the bottom of the mounting plate (51), two groups of positioning brackets (64) being slidably connected to the outside of the barrier box (61), the positioning brackets (64) being arranged in a "U" shape, the cross section of the positioning brackets (64) being an L-shaped structure, multiple groups of bolts (65) being slidably connected to the positioning brackets (64), threaded sleeves (66) being threadedly connected to the bolts (65), and multiple groups of the threaded sleeves (66) being fixedly connected to the bottom of the mounting plate (51), and a sealing gasket (67) being arranged between the pressing plate (62) and the mounting plate (51); The control module (8) and the remote communication module (81) are both installed at the bottom of the mounting plate (51). The control module (8) and the remote communication module (81) are both located inside the barrier box (61). The control module (8) is connected to multiple sets of connecting lines (82). The connecting lines (82) pass through the battery box (71) and are connected to the battery (7). The connecting lines (82) pass through the barrier box (61) and are provided with rubber sleeves at the penetration positions. Multiple sets of harmful gas sensors (9) are respectively installed on both sides of the barrier box (61). The positions of the harmful gas sensors (9) and the through holes (54) correspond.

2. The intelligent underground hazardous gas detection and safety protection system according to claim 1, characterized in that, The mounting plate (51) is provided with a fixing ring (55) on its outer ring. The fixing ring (55) has an L-shaped cross-section. The fixing ring (55) is fixedly connected to the bottom of the fixing cylinder (1). The top of the fixing ring (55) is fixedly connected to the first support ring (2). The mounting plate (51) is provided with a second support ring (56) below it. The second support ring (56) is fixedly connected to the inside of the fixing ring (55).

3. The intelligent detection and safety protection system for underground harmful gases according to claim 2, characterized in that, A support mesh plate (4) is slidably connected in the first support ring (2). Multiple sets of mounting blocks (41) are fixedly connected to the outer ring of the support mesh plate (4). Multiple sets of mounting grooves (21) are opened on the first support ring (2). The multiple sets of mounting grooves (21) are arranged in a ring array. The multiple sets of mounting blocks (41) are slidably connected in the multiple sets of mounting grooves (21).

4. The intelligent underground hazardous gas detection and safety protection system according to claim 3, characterized in that, The battery box (71) is fixedly connected to a column (72) on top, and the solar panel (73) is installed on the top of the column (72).

5. The intelligent underground hazardous gas detection and safety protection system according to claim 4, characterized in that, The servo motor (52), battery (7), remote communication module (81) and harmful gas sensor (9) are all electrically connected to the control module (8).

6. The intelligent underground hazardous gas detection and safety protection system according to claim 5, characterized in that, A positioning ring (11) is provided on the outside of the fixed cylinder (1).

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