A comprehensive pipe gallery ventilation demisting system

Abstract

This invention provides a ventilation and defogging system for integrated utility tunnel ventilation, relating to the field of ventilation control technology. The system further includes: a circulation pipe assembly fixedly connected to the main body of the utility tunnel and the ventilation shaft; and a mechanical ventilation component, the bottom of which is installed on top of a firewall, and the top of which is inserted into the ventilation shaft. Air within the main body of the utility tunnel is dehumidified and purified by the circulation pipe assembly, and then returned to the interior of the main body of the utility tunnel via the mechanical ventilation component. This isolates the external environment while achieving internal air circulation, dehumidification, and purification within the main body of the utility tunnel, thus optimizing the air quality inside the utility tunnel.

Description

Technical Field

[0001] This invention relates to the field of ventilation control technology, and in particular to a ventilation and defogging system for integrated pipe gallery ventilation. Background Technology

[0002] Urban underground utility tunnels, serving as underground tunnels to house various municipal pipelines such as electricity, communications, water supply and drainage, and gas, play a vital role in urban construction. To improve the safety of air circulation, they are typically equipped with air circulation systems that use natural or mechanical methods to expel waste heat, humid air, and harmful gases generated by the equipment inside the tunnel, while simultaneously introducing fresh air to maintain a safe and stable internal environment.

[0003] Among the existing published Chinese patents, publication number CN115289579A discloses a ventilation system and method for a long-distance integrated utility tunnel spanning a water area. The water-spanning section of the integrated utility tunnel is located between two land sections. Exhaust shafts and supply shafts are respectively set in the two land sections of the integrated utility tunnel. An exhaust fan is installed in the exhaust shaft, and a supply fan is installed in the supply shaft. An exhaust duct and a supply duct are provided on the top of the integrated utility tunnel. The exhaust shaft is connected to the exhaust duct, and the supply shaft is connected to the supply duct. The integrated utility tunnel includes several fire compartments. An exhaust outlet connected to each fire compartment is provided on the bottom plate or side wall of the exhaust duct, and a supply outlet connected to each fire compartment is provided on the bottom plate or side wall of the supply duct. Electric fire dampers are provided on both the exhaust outlet and the supply outlet.

[0004] Using existing ventilation methods, when both the external air humidity and the air humidity inside the pipe gallery are high (e.g., air humidity ≥ 50%), even if mechanical ventilation is used, it only increases air circulation. The humid air from the outside will continue to enter the interior of the pipe gallery, causing the interior of the pipe gallery to remain humid.

[0005] Therefore, it is necessary to provide a ventilation and defogging system for integrated utility tunnel ventilation to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a ventilation and defogging system for integrated utility tunnel ventilation, which solves the problem in related technologies that it is inconvenient to isolate the air in the utility tunnel from the outside air when the outside humidity is greater than the humidity in the utility tunnel.

[0007] To solve the above-mentioned technical problems, the present invention provides a ventilation and defogging system for integrated utility tunnel ventilation, comprising a utility tunnel body and a ventilation shaft, wherein a firewall is installed inside the utility tunnel body; the bottom of the ventilation shaft is fixedly connected to the top of the utility tunnel body, and louvers are installed on the ventilation shaft; the firewall is positioned directly below the ventilation shaft, and the system further comprises:

[0008] A circulation pipe assembly, which is fixedly connected to the main body of the pipe gallery and the ventilation shaft;

[0009] A mechanical ventilation assembly, the bottom of which is mounted on top of the firewall, and the top of which is inserted into the interior of the ventilation shaft;

[0010] A ventilation switch includes two diversion plates and a movable frame. The two diversion plates are symmetrically installed on the inner side of the ventilation shaft. The movable frame is sleeved on the mechanical ventilation assembly and is slidably installed inside the ventilation shaft. The two ends of the telescopic member are fixedly connected to the mechanical ventilation assembly and the movable frame.

[0011] A switch plate, the bottom of which is fixed to the top of the movable frame, the switch plate is slidably mounted on the inner surface of the ventilation shaft, and the switch plate is aligned with the output port of the circulation pipe assembly;

[0012] A switching mechanism is installed inside the ventilation shaft and is used to control the switch at the input end of the ventilation shaft.

[0013] The movable frame and the drainage plate are aligned vertically. When the movable frame and the drainage plate are separated, ventilation is allowed between them. When the movable frame and the drainage plate are in contact, ventilation is not allowed between them.

[0014] Preferably, the mechanical ventilation assembly includes a bracket, a drainage pipe, and a drainage fan. The bracket is fixed to the top of the firewall, the drainage pipe is fixed to the bracket, and the drainage fan is installed inside the drainage pipe.

[0015] Preferably, there are two circulation pipe groups, which are symmetrically arranged on both sides of the ventilation shaft. The number of circulation pipe groups, switch plates, diversion pipes and diversion fans are equal and they are arranged in a one-to-one correspondence.

[0016] Preferably, the circulating pipe assembly includes an air duct and a dehumidifying pipe. The air duct is fixedly connected to the main body of the pipe gallery and the air shaft. The outlet of the air duct is aligned with the switching range of the switch plate. The dehumidifying pipe is fixedly installed inside the air duct and has multiple ventilation bends inside.

[0017] Preferably, the dehumidification pipe is equipped with a water-absorbing and dehumidifying material.

[0018] Preferably, dust filters are provided at both ends of the dehumidification pipe.

[0019] Preferably, the air duct is installed through the interior of the main body of the pipe gallery, and the dehumidification pipe is detachably installed on the air duct.

[0020] Preferably, the switching mechanism includes a drive component and a rotary valve plate, the drive component is fixedly disposed in the ventilation shaft, the rotary valve plate is fixedly disposed on the rotation shaft of the drive component, and the rotary valve plate is rotatably installed in the ventilation shaft;

[0021] When the rotary valve plate is set vertically, the air inlet of the air shaft is open; when the rotary valve plate is set horizontally, the air inlet of the air shaft is closed.

[0022] Preferably, it also includes an intelligent monitoring terminal, which includes a sensor module, a timing module, an AI management module, a remote control module, an operation module, and a display module that are connected to the PLC control module via signals.

[0023] The sensor module is used to detect the temperature, humidity, carbon dioxide, oxygen and harmful gas concentrations within the main body of the pipe gallery online;

[0024] The timing module is used to time the cycle of forced purification and circulating ventilation within the main body of the pipe gallery;

[0025] The AI ​​management module is used for intelligent and automated control and management of the equipment;

[0026] The remote control module is used to transmit control information to the corresponding drive device;

[0027] The operation module is used to manually adjust and control the parameters of the intelligent monitoring terminal;

[0028] The display module is used to display the current detection results and parameter adjustment data in real time;

[0029] The remote control module is connected to the duct fan, the telescopic component, and the drive component via signals.

[0030] This invention also provides a ventilation and defogging method for integrated utility tunnel ventilation, which uses the aforementioned ventilation and defogging system to detect and control the air within the main body of the utility tunnel, including the following steps:

[0031] Step S100: Online temperature and humidity detection. The intelligent monitoring terminal is used to monitor the air quality within the main body of the pipe gallery online and obtain air data.

[0032] Step S200, AI intelligent recognition: The intelligent monitoring terminal autonomously analyzes the collected air data, compares the air data with a preset threshold range, and obtains the comparison result.

[0033] Step S300, Equipment Early Warning and Control: The intelligent monitoring terminal analyzes the comparison results to determine whether an early warning is needed and remotely controls the ventilation mode.

[0034] Step S400: The ventilation mode is automatically switched, and the usage mode of the ventilation shaft is automatically switched according to the comparison results;

[0035] Step S500, ventilation behavior recording: The intelligent monitoring terminal automatically stores and records the early warning information and ventilation control information.

[0036] Compared with related technologies, the ventilation and demisting system for integrated pipe gallery ventilation provided by the present invention has the following beneficial effects:

[0037] When the natural ventilation volume inside the main body of the pipe gallery is insufficient and the humidity inside the main body of the pipe gallery is greater than the outside humidity, the mechanical ventilation component is activated, so that the equipment switches from natural ventilation mode to auxiliary ventilation mode, thereby increasing the ventilation rate entering the main body of the pipe gallery through the air shaft. Mechanical ventilation + natural ventilation is used to accelerate air circulation, reduce the air humidity inside the main body of the pipe gallery, and achieve natural ventilation and drying inside the main body of the pipe gallery.

[0038] When the humidity inside the main body of the pipe gallery is the same as the humidity of the external environment, and the humidity exceeds the set threshold, the equipment is first switched from natural ventilation mode to circulating ventilation mode. The air inlet of the air shaft is closed, and an internal circulating ventilation structure is formed between the circulating pipe group and the main body of the pipe gallery. The mechanical ventilation component is activated. After the air inside the main body of the pipe gallery is dehumidified and purified by the circulating pipe group, it is then returned to the interior of the main body of the pipe gallery through the mechanical ventilation component. While isolating the external environment, the internal circulation, dehumidification and purification of the air inside the main body of the pipe gallery are achieved, thus optimizing the air quality inside the main body of the pipe gallery. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 A three-dimensional diagram of a first embodiment of a ventilation and demisting system for integrated pipe gallery ventilation provided by the present invention;

[0041] Figure 2 for Figure 1 The front view of the AA cross-sectional structure shown;

[0042] Figure 3 for Figure 2 An enlarged schematic diagram of part A shown;

[0043] Figure 4 for Figure 1The right view of the BB cross-sectional structure shown;

[0044] Figure 5 for Figure 3 The top view of the induced draft fan connection structure shown;

[0045] Figure 6 for Figure 2 A schematic diagram of the cross-sectional structure of the dehumidification pipe shown;

[0046] Figure 7 This is a schematic diagram of the first embodiment of the ventilation and demisting system for integrated pipe gallery ventilation provided by the present invention, wherein, Figure 7 (a) shows the state diagram where the switch panel is pressed down to open the air duct output end. Figure 7 (b) in the diagram shows the state when the rotary valve plate closes the air shaft inlet;

[0047] Figure 8 for Figure 7 (b) Right view of the movable frame connection structure in state (b);

[0048] Figure 9 A three-dimensional cross-sectional view of a second embodiment of the ventilation and demisting system for integrated pipe gallery ventilation provided by the present invention;

[0049] Figure 10 This is a schematic diagram of the second embodiment of the ventilation and demisting system for integrated pipe gallery ventilation provided by the present invention, wherein... Figure 10 (a) in the diagram shows the connection status of the synchronization rod under natural ventilation mode. Figure 10 (b) in the diagram shows the connection status of the synchronization rod under the circulating ventilation mode.

[0050] Explanation of icon numbers:

[0051] 1. Main structure of the utility tunnel; 11. Firewall;

[0052] 2. Ventilation shaft; 201. Venetian blinds;

[0053] 3. Circulation pipe assembly; 31. Air duct; 32. Dehumidification pipe; 321. Ventilation bend;

[0054] 4. Mechanical ventilation components; 41. Support frame; 42. Drainage pipe; 43. Drainage fan;

[0055] 5. Telescopic components;

[0056] 6. Ventilation switch; 61. Drainage plate; 62. Movable frame;

[0057] 7. Switchboard;

[0058] 8. Switching mechanism; 81. Driving component; 82. Rotary valve plate;

[0059] 9. Intelligent monitoring terminal;

[0060] 821. Synchronizing rod.

[0061] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0063] This invention provides a ventilation and defogging system for integrated pipe gallery ventilation.

[0064] First embodiment:

[0065] Please refer to the following: Figures 1 to 4 In this invention, the ventilation and defogging system for the integrated utility tunnel includes a main tunnel body 1 and a ventilation shaft 2. A firewall 11 is installed inside the main tunnel body 1. The bottom of the ventilation shaft 2 is fixedly connected to the top of the main tunnel body 1. A louver 201 is installed on the ventilation shaft 2. The firewall 11 is positioned directly below the ventilation shaft 2. The ventilation and defogging system for the integrated utility tunnel also includes:

[0066] The circulation pipe assembly 3 is fixedly connected to the main body of the pipe gallery 1 and the ventilation shaft 2;

[0067] Mechanical ventilation assembly 4, the bottom of which is installed on the top of the firewall 11, and the top of which is inserted into the interior of the ventilation shaft 2;

[0068] Ventilation switch 6 includes two diversion plates 61 and a movable frame 62. The two diversion plates 61 are symmetrically installed on the inner side of the ventilation shaft 2. The movable frame 62 is sleeved on the mechanical ventilation assembly 4 and slidably installed in the ventilation shaft 2. The two ends of the telescopic member 5 are fixedly connected to the mechanical ventilation assembly 4 and the movable frame 62.

[0069] The bottom of the switch plate 7 is fixed to the top of the movable frame 62, the switch plate 7 is slidably installed on the inner surface of the ventilation shaft 2, and the switch plate 7 is aligned with the output port of the circulation pipe group 3.

[0070] A switching mechanism 8 is installed inside the ventilation shaft 2 and is used to control the switch at the input end of the ventilation shaft 2.

[0071] The movable frame 62 and the diversion plate 61 are aligned vertically. When the movable frame 62 and the diversion plate 61 are separated, ventilation is allowed between the movable frame 62 and the diversion plate 61. When the movable frame 62 and the diversion plate 61 are in contact, ventilation is not allowed between the movable frame 62 and the diversion plate 61.

[0072] In this embodiment, the telescopic component 5 can be any one of a hydraulic telescopic cylinder, a telescopic air cylinder, or an electric telescopic cylinder, used to directly drive the movable frame 62 to lift and adjust.

[0073] In this embodiment, the ventilation shaft 2 includes three ventilation modes:

[0074] In natural ventilation mode, the switching mechanism 8 controls the opening of the input end of the ventilation shaft 2, and ventilation is allowed after the movable frame 62 and the diversion plate 61 are opened. The switch plate 7 blocks the output port of the circulation pipe group 3, and the mechanical ventilation component 4 is closed. Natural wind enters the interior of the pipe gallery body 1 naturally downward through the top of the ventilation shaft 2. This mode is suitable for use when the air circulation inside the pipe gallery body 1 is sufficient.

[0075] In auxiliary ventilation mode, the switching mechanism 8 controls the opening of the input end of the ventilation shaft 2, and ventilation is allowed after the movable frame 62 and the diversion plate 61 are opened. The switch plate 7 blocks the output port of the circulation pipe group 3, the mechanical ventilation component 4 is opened, and natural wind enters the interior of the pipe gallery body 1 naturally downward through the top of the ventilation shaft 2. At the same time, the mechanical ventilation component 4 is activated and accelerates the ventilation efficiency of the ventilation shaft 2 towards the pipe gallery body 1. This mode is suitable for use when the air circulation inside the pipe gallery body 1 is insufficient.

[0076] In the circulating ventilation mode, the switching mechanism 8 controls the input end of the ventilation shaft 2 to close, and ventilation is not allowed after the movable frame 62 and the diversion plate 61 are closed. The output port of the circulating pipe group 3 is opened, the mechanical ventilation component 4 is opened, and natural wind is not allowed. The mechanical ventilation component 4 is activated, so that the pipe gallery body 1 and the circulating pipe group 3 form an internal circulating ventilation structure. Outside air (with high humidity) will not enter the interior of the pipe gallery body 1. This mode is suitable for use when the air humidity inside the pipe gallery body 1 is high.

[0077] When the natural ventilation volume inside the main body 1 of the pipe gallery is insufficient and the humidity inside the main body 1 of the pipe gallery is greater than the outside humidity, the mechanical ventilation component 4 is activated, so that the equipment switches from the natural ventilation mode to the auxiliary ventilation mode, thereby increasing the ventilation rate entering the main body 1 of the pipe gallery through the ventilation shaft 2. The mechanical ventilation + natural ventilation is used to accelerate air circulation, reduce the air humidity inside the main body 1 of the pipe gallery, and achieve natural ventilation and drying inside the main body 1 of the pipe gallery.

[0078] When the humidity inside the main body 1 of the pipe gallery is the same as the humidity of the external environment, and the humidity exceeds the set threshold, the equipment is first switched from natural ventilation mode to circulating ventilation mode. The air inlet of the air shaft 2 is closed, and an internal circulating ventilation structure is formed between the circulating pipe group 3 and the main body 1 of the pipe gallery. The mechanical ventilation component 4 is activated. After the air inside the main body 1 of the pipe gallery is dehumidified and purified by the circulating pipe group 3, it is then returned to the interior of the main body 1 of the pipe gallery through the mechanical ventilation component 4. While isolating the external environment, the internal circulation, dehumidification and purification of the air inside the main body 1 of the pipe gallery are realized, thus optimizing the air quality inside the main body 1 of the pipe gallery.

[0079] When the air inside the main body of the pipe gallery is abnormal, the ventilation mode can be switched to the circulating ventilation mode directly, which can directly prevent the air inside the main body of the pipe gallery from being directly discharged to the outside, thus preventing the leakage of polluted air. At the same time, it can also dehumidify and purify the air inside the pipe gallery.

[0080] Please refer to the following: Figure 3 and Figure 5 The mechanical ventilation assembly 4 includes a bracket 41, a drainage pipe 42, and a drainage fan 43. The bracket 41 is fixed to the top of the firewall 11, the drainage pipe 42 is fixed to the bracket 41, the drainage fan 43 is installed inside the drainage pipe 42, and the bottom of the telescopic member 5 is fixedly connected to the bracket 41.

[0081] The drainage pipe 42 is fixedly installed on the firewall 11 by the bracket 41 and is vertically arranged in the ventilation range of the air shaft 2 to ensure the overall stability of the installation of the drainage pipe 42.

[0082] The induced draft fan 43 adopts a high-efficiency and energy-saving variable frequency fan, which can steplessly adjust the air volume according to the ventilation needs and reduce energy consumption.

[0083] The air intake fan 43 facilitates the downward drawing of air from the top of the intake pipe 42, forming auxiliary mechanical ventilation;

[0084] In auxiliary ventilation mode, the natural ventilation rate can be accelerated;

[0085] In the circulating ventilation mode, forced internal circulation ventilation can be performed to facilitate internal circulation ventilation of the air inside the main body 1 of the pipe gallery.

[0086] Please refer to the following: Figure 1 and Figure 2 There are two circulation pipe groups 3, which are symmetrically arranged on both sides of the ventilation shaft 2. The number of circulation pipe groups 3, switch plates 7, diversion pipes 42 and diversion fans 43 are equal and they are arranged in a one-to-one correspondence.

[0087] The two sets of circulating pipe groups 3 are symmetrically arranged on both sides of one of the ventilation shafts 2. In the circulating ventilation mode, they can simultaneously provide auxiliary ventilation or circulating ventilation dehumidification and drying to the ventilation range on both sides of the firewall 11, so as to facilitate ventilation or circulating dehumidification and drying of the main body of the pipe gallery 1 in two different directions under the air intake conditions of one of the ventilation shafts 2.

[0088] Please refer to the following: Figure 2 and Figure 6 The circulating pipe assembly 3 includes a duct 31 and a dehumidifying pipe 32. The duct 31 is fixedly connected to the main body of the pipe gallery 1 and the air shaft 2. The outlet of the duct 31 is aligned with the switching range of the switch plate 7. The dehumidifying pipe 32 is fixedly installed inside the duct 31. Multiple ventilation bends 321 are provided inside the dehumidifying pipe 32.

[0089] Specifically, the dehumidification pipe 32 is integrated with a moisture-absorbing and dehumidifying material. This material absorbs moisture from the passing air, achieving a ventilation and dehumidification effect. This allows for internal circulation ventilation and dehumidification through the dehumidification pipe 32 when the air humidity inside the pipe gallery body 1 is high and external circulation ventilation and dehumidification are not feasible.

[0090] A ventilation bend 321 is provided on the dehumidification pipe 32 to facilitate full contact between the air and the dehumidification pipe 32, so that the moisture in the air is absorbed and dehumidified by the dehumidification pipe 32 as much as possible.

[0091] By setting the dehumidification pipe 32, in the circulating ventilation mode, the air in the main body 1 of the pipe gallery enters through the inlet of the air duct 31, and then the air humidity is reduced after being adsorbed and dehumidified by the dehumidification pipe 32, which facilitates the dehumidification and drying of the air in the internal circulation mode.

[0092] The dried air enters the top area of ​​the diversion pipe 42 through the outlet of the air duct 31, and then re-enters the interior of the pipe gallery body 1 after being diverted and transported by the diversion fan 43. This effectively eliminates condensation on the inner wall of the pipe gallery and the equipment.

[0093] Specifically, dust filters are provided at both ends of the dehumidification pipe 32. The dust filters effectively protect the ventilation range of the dehumidification pipe 32, reducing the range of dust entering the ventilation bend 321, reducing the impact of dust on the dehumidification pipe 32, and extending the service life of the dehumidification pipe 32.

[0094] In an optional embodiment of this example, the dust filter adopts a ventilation filter structure with activated carbon adsorption material, which facilitates air purification during internal circulation ventilation and improves the air quality inside the main body 1 of the pipe gallery.

[0095] In a preferred embodiment of this example, the air duct 31 is installed through the interior of the pipe gallery body 1, and the dehumidification pipe 32 is detachably installed on the air duct 31 (not shown in the figure).

[0096] Specifically, the bottom of the air duct 31 is provided with a disassembly port, and the dehumidification pipe 32 is inserted into the disassembly port and embedded in the air duct 31.

[0097] This allows for easy replacement of the dehumidification pipe 32 at the bottom of the air duct 31 within the main body of the pipe gallery 1, without the need to reserve replacement space above the circulation pipe assembly 3.

[0098] Please refer to the following: Figure 2 and Figure 4 The switching mechanism 8 includes a drive component 81 and a rotary valve plate 82. The drive component 81 is fixedly disposed in the ventilation shaft 2, and the rotary valve plate 82 is fixedly disposed on the rotation shaft of the drive component 81. The rotary valve plate 82 is rotatably installed in the ventilation shaft 2.

[0099] When the rotary valve plate 82 is set vertically, the air inlet of the air shaft 2 is open; when the rotary valve plate 82 is set horizontally, the air inlet of the air shaft 2 is closed.

[0100] In this embodiment, the driving component 81 is used to drive the rotary valve plate 82 to rotate and adjust.

[0101] When the rotary valve plate 82 is in a vertical state, the air inlet of the ventilation shaft 2 is opened, which facilitates the internal and external ventilation of the main body 1 of the pipe gallery in both natural ventilation mode and auxiliary ventilation mode.

[0102] When the rotary valve plate 82 is in a horizontal state, the air inlet of the ventilation shaft 2 is closed, which facilitates the internal circulation ventilation of the main body of the pipe gallery 1 in the circulating ventilation mode.

[0103] The rotation adjustment of the rotary valve plate 82 can be easily controlled by the drive component 81, thereby realizing the opening and closing adjustment of the air inlet of the air shaft 2.

[0104] Please refer to it again. Figure 2 The ventilation and defogging system of the integrated utility tunnel also includes an intelligent monitoring terminal 9, which includes a sensor module, a timing module, an AI management module, a remote control module, an operation module, and a display module that are connected to the PLC control module.

[0105] The sensor module is used to detect the temperature, humidity, carbon dioxide, oxygen and harmful gas concentrations within the main body 1 of the pipe gallery online;

[0106] The timing module is used to time the cycle of forced purification and circulating ventilation within the main body 1 of the pipe gallery;

[0107] The AI ​​management module is used for intelligent and automated control and management of the equipment;

[0108] The remote control module is used to transmit control information to the corresponding drive device;

[0109] The operation module is used to manually adjust and control the parameters of the intelligent monitoring terminal 9;

[0110] The display module is used to display the current detection results and parameter adjustment data in real time;

[0111] The remote control module is connected to the duct fan 43, the telescopic component 5, and the drive component 81 via signals.

[0112] The integrated sensor structure of the intelligent monitoring terminal 9 facilitates online monitoring of the air quality inside the main body 1 of the pipe gallery. In conjunction with the use of the AI ​​management module, it is convenient to automatically switch the ventilation mode of the ventilation shaft 2 based on the online monitoring results, so as to ensure ventilation while minimizing energy consumption and extending the service life of the equipment.

[0113] The sensor module is equipped with a temperature and humidity sensor, a CO2 sensor, an oxygen sensor, and a harmful gas detector.

[0114] The hazardous gas detector is selected from:

[0115] Methane infrared sensor: Model: MH-741A. Features: High sensitivity, low power consumption, multiple output modes;

[0116] Hydrogen sulfide electrochemical sensor: Model: GS-250EP. Features: Measurement range 0-50 ppm, is one of the typical toxic gas sensors.

[0117] The timing module is used to time and count the usage cycle of the dehumidification pipe 32 in the circulating ventilation mode, which facilitates the subsequent replacement and maintenance of the dehumidification pipe 32.

[0118] The AI ​​management module adopts an existing management system for online monitoring, identification and analysis of data, and makes decisions on ventilation modes based on the analysis results (this AI management technology is relatively mature in the existing technology, and does not need to be elaborated on here).

[0119] The remote control module can adopt either a wired signal connection (suitable for remote control, direct wired connection) or a wireless signal connection (suitable for short-range control, wireless connection such as Wi-Fi or Bluetooth).

[0120] The operation module is a touch-sensitive button interface, which can be operated by pressing buttons or using a touch screen.

[0121] The display module uses an LCD screen to display the current ventilation mode, online monitoring data, and early warning information in real time.

[0122] In this embodiment, during the continuous circulation ventilation process inside the main body 1 of the pipe gallery, the sensor module also monitors the oxygen concentration in the air in real time.

[0123] When oxygen is insufficient, the equipment automatically switches from circulating ventilation mode to auxiliary ventilation mode, allowing outside air to quickly enter the interior of the main body 1 of the pipe gallery.

[0124] The working principle of the ventilation and defogging system for the integrated utility tunnel ventilation provided in this embodiment is as follows:

[0125] A1. When the air quality inside the main body 1 of the pipe gallery is normal, the equipment maintains the natural ventilation mode to facilitate the natural circulation of air inside the main body 1 of the pipe gallery.

[0126] A2, When the air circulation inside the main body 1 of the pipe gallery is insufficient, the mechanical ventilation component 4 is activated, and the ventilation mode is switched from natural ventilation mode to auxiliary ventilation mode to accelerate the air circulation rate of the air entering the main body 1 of the pipe gallery through the ventilation shaft 2, so as to quickly replace the air inside the main body 1 of the pipe gallery.

[0127] When the outside air is dry, but the air humidity inside the main body 1 of the pipe gallery is high (exceeding the preset warning threshold), the natural ventilation, dehumidification and drying of the air inside the main body 1 of the pipe gallery can also be achieved through the auxiliary ventilation mode.

[0128] A3, please refer to the reference. Figure 7 (a) to Figure 7 In (b), when both the external humidity and the air humidity inside the main body 1 of the pipe gallery are high (exceeding the preset warning threshold), the telescopic component 5 is activated first, and the telescopic component 5 drives the movable frame 62 to move downwards, such as... Figure 8 As shown, this closes the gap between the movable frame 62 and the diversion plate 61;

[0129] The switch plate 7 moves down synchronously with the movable frame 62, and the switch plate 7 gradually separates from the output port of the air duct 31, so that the output port of the air duct 31 opens synchronously.

[0130] Re-activate the drive unit 81, which drives the rotary valve plate 82 to rotate, as follows: Figure 8As shown, the rotary valve plate 82 switches from a vertical state to a horizontal state, thereby closing the air inlet of the ventilation shaft 2, isolating it from outside air, and facilitating the circulation ventilation between the main body of the pipe gallery 1 and the air duct 31.

[0131] When the humidity of the external environment and the air within the main body of the pipe gallery 1 is too high, the equipment can automatically switch from natural ventilation mode or auxiliary ventilation mode to circulating ventilation mode, so as to facilitate internal circulation dehumidification and purification of the air in the main body of the pipe gallery 1 and reduce the dryness of the external environment.

[0132] Second embodiment:

[0133] Please refer to the following: Figure 9 and Figure 10 Based on the ventilation and defogging system for integrated utility tunnels provided in the first embodiment of the present invention, the second embodiment of the present invention proposes another ventilation and defogging system for integrated utility tunnels. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0134] Specifically, the ventilation and defogging system for integrated pipe gallery ventilation provided in the second embodiment of the present invention is different in that the telescopic member 5 is a spring-supported pipe, the two ends of the telescopic member 5 are elastically connected to the bracket 41 and the movable frame 62, and the two ends of the synchronizing rod 821 are respectively hinged to the rotating valve plate 82 and the movable frame 62.

[0135] When the rotary valve plate 82 is in the open state, the movable frame 62 is open and the switch plate 7 is closed; when the rotary valve plate 82 is in the closed state, the movable frame 62 is closed and the switch plate 7 is open.

[0136] In this embodiment, the drive component 81 adopts an energy-saving motor structure and is equipped with a stop brake mechanism.

[0137] Under the driving action of the driving component 81, not only can the rotary valve plate 82 be rotated and switched, but the movable frame 62 can also be adjusted up and down synchronously through the synchronous rod 821. When the movable frame 62 is adjusted up and down, the switch plate 7 is also moved up and down.

[0138] This design facilitates the automatic closing of the airflow guide plate 61 and the movable frame 62 while simultaneously switching the rotary valve plate 82 from the open to the closed state, and also allows for the opening of the air duct 31 outlet. This facilitates the circulation and purification of air within the pipe gallery body 1; reduces energy consumption during drive and switching adjustments; and extends the equipment's service life.

[0139] Please refer to the following: Figure 10 (a) to Figure 10(b) The working principle of the ventilation and demisting system for the integrated pipe gallery provided in this embodiment:

[0140] B1. When it is necessary to circulate and purify the air inside the main body 1 of the pipe gallery, the drive component 81 is activated. On the one hand, the drive component 81 drives the rotary valve plate 82 to rotate, which facilitates the rotary valve plate 82 to switch from the open state to the closed state.

[0141] B2. On the other hand, during the rotation of the rotary valve plate 82, the rotary valve plate 82 pushes the movable frame 62 downward through the synchronous rod 821. When the movable frame 62 moves downward, it gradually comes into contact with the diversion plate 61, which facilitates switching the movable frame 62 and the diversion plate 61 from the open state to the closed state.

[0142] B3, At the same time, the switch plate 7 moves down synchronously with the movable frame 62, and the switch plate 7 controls the output port of the air duct 31 to switch from the closed state to the open state;

[0143] Under the independent driving action of the driving component 81, the ventilation shaft 2 can be switched from natural ventilation mode to circulating ventilation mode.

[0144] A ventilation and defogging method for integrated utility tunnel ventilation.

[0145] The ventilation and defogging method for the integrated utility tunnel uses the ventilation and defogging system to detect and control the air within the main body 1 of the utility tunnel, and includes the following steps:

[0146] Step S100: Online temperature and humidity detection. The intelligent monitoring terminal 9 is used to monitor the air quality within the main body 1 of the pipe gallery online and obtain air data.

[0147] Step S200, AI intelligent recognition: The intelligent monitoring terminal 9 autonomously analyzes the collected air data, compares the air data with a preset threshold range, and obtains the comparison result.

[0148] Step S300, Equipment Early Warning and Control: The intelligent monitoring terminal 9 analyzes the comparison results to determine whether an early warning is needed and remotely controls the ventilation mode.

[0149] When the comparison result is within the threshold, the device is in natural ventilation mode and no warning is issued;

[0150] When the comparison result exceeds the threshold, the equipment issues a warning and automatically selects an auxiliary ventilation mode based on the range exceeded.

[0151] Step S400: The ventilation mode is automatically switched, and the usage mode of the ventilation shaft 2 is automatically switched according to the comparison results;

[0152] When it is necessary to increase the ventilation volume, the ventilation shaft 2 is switched from natural ventilation mode to enhanced ventilation mode. The diversion fan 43 increases the air intake of the ventilation shaft 2 through the diversion pipe 42. The combined mode of natural ventilation and mechanical ventilation is adopted to directly increase the ventilation rate in the main body of the pipe gallery 1 and accelerate air circulation.

[0153] When it is necessary to purify the air within the main body of the pipe gallery 1, the ventilation shaft 2 is switched from natural ventilation mode to circulating purification mode. The duct fan 43 circulates the air in the main body of the pipe gallery 1 from inside the duct 31 for internal purification. On the one hand, it isolates the external environment and prevents polluted gas from being discharged to the outside. On the other hand, it realizes the circulation purification of the air in the main body of the pipe gallery 1 and reduces the degree of air pollution.

[0154] Step S500, ventilation behavior recording: The intelligent monitoring terminal 9 automatically stores and records the early warning information and ventilation control information.

[0155] It facilitates automatic warning and control of ventilation mode switching of the ventilation shaft 2 based on automatically collected air quality information. Each time the mode is switched, the warning information and control behavior information can be recorded and saved, which facilitates the maintenance and management of equipment operation.

[0156] The specific structure of the ventilation and defogging system for the integrated utility tunnel is as described in the above embodiments. Since the ventilation and defogging method for the integrated utility tunnel adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0157] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A ventilation and defogging system for a comprehensive utility tunnel, comprising a utility tunnel body and a ventilation shaft, wherein a firewall is installed inside the utility tunnel body; the bottom of the ventilation shaft is fixedly connected to the top of the utility tunnel body, and louvers are installed on the ventilation shaft; the firewall is positioned directly below the ventilation shaft, characterized in that... Also includes: A circulation pipe assembly, which is fixedly connected to the main body of the pipe gallery and the ventilation shaft; A mechanical ventilation assembly, the bottom of which is mounted on top of the firewall, and the top of which is inserted into the interior of the ventilation shaft; A ventilation switch includes two diversion plates and a movable frame. The two diversion plates are symmetrically installed on the inner side of the ventilation shaft. The movable frame is sleeved on the mechanical ventilation assembly and is slidably installed inside the ventilation shaft. The two ends of the telescopic member are fixedly connected to the mechanical ventilation assembly and the movable frame. A switch plate, the bottom of which is fixed to the top of the movable frame, the switch plate is slidably mounted on the inner surface of the ventilation shaft, and the switch plate is aligned with the output port of the circulation pipe assembly; A switching mechanism is installed inside the ventilation shaft and is used to control the switch at the input end of the ventilation shaft. The movable frame and the drainage plate are aligned vertically. When the movable frame and the drainage plate are separated, ventilation is allowed between them. When the movable frame and the drainage plate are in contact, ventilation is not allowed between them. The mechanical ventilation assembly includes a bracket, a drainage pipe, and a drainage fan. The bracket is fixed to the top of the firewall, the drainage pipe is fixed to the bracket, the drainage fan is installed inside the drainage pipe, and the bottom of the telescopic component is fixedly connected to the bracket. The circulating pipe assembly includes an air duct and a dehumidifying pipe. The air duct is fixedly connected to the main body of the pipe gallery and the air shaft. The outlet of the air duct is aligned with the switching range of the switch plate. The dehumidifying pipe is fixedly installed inside the air duct and has multiple ventilation bends inside. The switching mechanism includes a drive component and a rotary valve plate. The drive component is fixed inside the ventilation shaft, and the rotary valve plate is fixed on the rotation shaft of the drive component. The rotary valve plate is rotatably installed inside the ventilation shaft. When the rotary valve plate is set vertically, the air inlet of the ventilation shaft is open; when the rotary valve plate is set horizontally, the air inlet of the ventilation shaft is closed. The telescopic component is a spring-supported tube, and its two ends are elastically connected to the bracket and the movable frame. The two ends of the synchronizing rod are respectively hinged to the rotary valve plate and the movable frame. When the rotary valve plate is in the open state, the movable frame is open and the switch plate is closed; when the rotary valve plate is in the closed state, the movable frame is closed and the switch plate is open. When it is necessary to circulate and purify the air inside the main body of the pipe gallery, the drive unit is activated. On the one hand, the drive unit drives the rotary valve plate to rotate, which facilitates the rotary valve plate to switch from the open state to the closed state. On the other hand, during the rotation of the rotary valve plate, the rotary valve plate pushes the movable frame to move down through the synchronizing rod. When the movable frame moves down, it gradually comes into contact with the diversion plate, which facilitates switching the movable frame and the diversion plate from the open state to the closed state.

2. The ventilation and demisting system for integrated utility tunnel ventilation according to claim 1, characterized in that, There are two circulation pipe groups, which are symmetrically arranged on both sides of the ventilation shaft. The number of circulation pipe groups, switch plates, diversion pipes and diversion fans are equal and they are arranged in a one-to-one correspondence.

3. The ventilation and demisting system for integrated utility tunnel ventilation according to claim 2, characterized in that, The dehumidification pipe is equipped with water-absorbing and dehumidifying material.

4. The ventilation and demisting system for integrated utility tunnel ventilation according to claim 3, characterized in that, Dust filters are installed at both ends of the dehumidification pipe.

5. The ventilation and demisting system for integrated utility tunnel ventilation according to claim 4, characterized in that, The air duct is installed inside the main body of the pipe gallery, and the dehumidification pipe is detachably installed on the air duct.

6. The ventilation and demisting system for integrated utility tunnel ventilation according to claim 5, characterized in that, It also includes an intelligent monitoring terminal, which includes a sensor module, a timing module, an AI management module, a remote control module, an operation module, and a display module that are connected to the PLC control module via signals. The sensor module is used to detect the temperature, humidity, carbon dioxide, oxygen and harmful gas concentrations within the main body of the pipe gallery online; The timing module is used to time the cycle of forced purification and circulating ventilation within the main body of the pipe gallery; The AI ​​management module is used for intelligent and automated control and management of the equipment; The remote control module is used to transmit control information to the corresponding drive device; The operation module is used to manually adjust and control the parameters of the intelligent monitoring terminal; The display module is used to display the current detection results and parameter adjustment data in real time; wherein, the remote control module is connected to the duct fan, the telescopic component and the drive component respectively.

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