Novel tunnel ventilation system and method based on thrust fan

Abstract

The invention relates to the technical field of tunnel ventilation systems, and provides a novel tunnel ventilation system and method based on a thrust fan, and the system comprises a thrust fan terminal, a working condition data monitoring terminal, a tunnel data monitoring terminal, an intelligent analysis terminal and a feedback control terminal; the thrust fan terminal is installed at the entrance and exit of the tunnel and used for ventilating the tunnel. The working condition data monitoring terminal is used for monitoring working condition data of the thrust fan terminal in real time; the tunnel data monitoring terminal is used for monitoring traffic flow, gas concentration and wind speed in the tunnel and weather data outside the tunnel in real time; the intelligent analysis terminal is used for performing intelligent analysis according to the working condition data of the thrust fan terminal, the traffic flow, the gas concentration and the wind speed in the tunnel and the weather data outside the tunnel to generate analysis result information; and the feedback control terminal is used for generating and executing a feedback control instruction according to the analysis result information. The tunnel ventilation system has the effects that the construction cost of the tunnel ventilation system is reduced, and the ventilation effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel ventilation systems, and in particular to a novel tunnel ventilation system and method based on a thrust fan. Background Art

[0002] Thrust fans force a large amount of air into or out of the tunnel, using high-speed airflow to form an overall air flow in the tunnel to drive ventilation of the entire tunnel. This type of fan usually has a large power and can provide airflow over a long distance at one time. The tunnel ventilation system is an equipment system specially used for air circulation and air quality control in tunnels, aiming to keep the air inside the tunnel fresh and safe and ensure the normal passage of pedestrians and vehicles. General tunnel ventilation systems usually include fans, sensors, control systems and other equipment, and are suitable for tunnel structures such as roads, railways, subways, and mines.

[0003] Now many tunnel ventilation systems have been developed. After a lot of searching and reference, we found that the tunnel ventilation systems in the prior art are such as the tunnel ventilation systems disclosed in the publication numbers CN104453973A, CN115110982A, and CN102472105A. These tunnel ventilation systems generally include: jet fan groups and fan control terminals. Each group of jet fans is installed in the tunnel in sequence along the length of the tunnel. The fan control terminal is used to control all jet fans to achieve tunnel ventilation. Since the jet fans need to utilize the jet effect and are arranged in groups along the length of the tunnel, the power distribution cables are longer, the cable cost is higher, and the ventilation coverage effect is also lower, resulting in the defects of high construction cost of the tunnel ventilation system and reduced ventilation effect. Summary of the invention

[0004] The purpose of the present invention is to propose a new tunnel ventilation system and method based on thrust fans in view of the shortcomings of the above-mentioned tunnel ventilation system.

[0005] The present invention adopts the following technical solution:

[0006] A new tunnel ventilation system based on a thrust fan comprises a thrust fan terminal, a working condition data monitoring terminal, a tunnel data monitoring terminal, an intelligent analysis terminal and a feedback control terminal; the thrust fan terminal is installed at the entrance and exit of the tunnel for ventilating the tunnel; the working condition data monitoring terminal is used for real-time monitoring of the working condition data of the thrust fan terminal; the tunnel data monitoring terminal is used for real-time monitoring of the vehicle flow, gas concentration, wind speed in the tunnel and weather data outside the tunnel; the intelligent analysis terminal is used for performing intelligent analysis based on the working condition data of the thrust fan terminal and the vehicle flow, gas concentration, wind speed in the tunnel and weather data outside the tunnel to generate analysis result information; the feedback control terminal is used for generating and executing feedback control instructions based on the analysis result information.

[0007] The thrust fan terminal includes an inlet thrust fan module and an outlet thrust fan module; the inlet thrust fan module is installed at the tunnel entrance; the outlet thrust fan module is installed at the tunnel exit; the inlet thrust fan module and the outlet thrust fan module work in cooperation with each other to regulate tunnel ventilation.

[0008] Optionally, the number of the inlet thrust fan modules and the outlet thrust fan modules is at least two; the number of the inlet thrust fan modules and the outlet thrust fan modules are the same; the inlet thrust fan modules, which are at least two in number, are arranged in a uniform arrangement at the tunnel entrance; and the outlet thrust fan modules, which are at least two in number, are arranged in a uniform arrangement at the tunnel exit.

[0009] Optionally, the inlet thrust fan module includes an inlet thrust fan body and an inlet track moving submodule; the inlet track moving submodule is installed at the tunnel entrance; all the inlet track moving submodules are arranged in a uniform manner at the tunnel entrance; the inlet thrust fan body is connected to the inlet track moving submodule; the inlet track moving submodule is used to adjust the distance between the inlet thrust fan body and the initial position within a specified distance range; the specified distance range is set according to the track travel of the inlet track moving submodule and the administrator's experience; the initial position is pre-set by the administrator; the exit thrust fan module includes an exit thrust fan body and an exit track moving submodule; the exit track moving submodule is installed at the tunnel exit; all the exit track moving submodules are arranged in a uniform manner at the tunnel exit; the exit thrust fan body is connected to the exit track moving submodule; the exit track moving submodule is used to adjust the distance between the exit thrust fan body and the initial position within a specified distance range; the specified distance range is set according to the track travel of the exit track moving submodule and the administrator's experience; the initial position is pre-set by the administrator.

[0010] Optionally, the operating condition data monitoring terminal includes a fan power monitoring module, a fan position monitoring module and a fan start-stop status monitoring module; the fan power monitoring module is used to monitor the fan power of the thrust fan body in real time when it is working; the fan position monitoring module is used to monitor the fan position of the thrust fan body in real time when it is working; the fan start-stop status monitoring module is used to monitor the start-stop status of the thrust fan body during operation in real time.

[0011] Optionally, the tunnel data monitoring terminal includes a vehicle flow monitoring module, a gas concentration monitoring module, a wind speed monitoring module and a weather data monitoring module; the vehicle flow monitoring module is used to monitor the vehicle flow in the tunnel in real time; the gas concentration monitoring module is used to monitor the gas concentration data in the tunnel in real time; the wind speed monitoring module is used to monitor the wind speed in the tunnel in real time; and the weather data monitoring module is used to monitor the weather data outside the tunnel in real time.

[0012] Optionally, the intelligent analysis terminal includes an intelligent gear selection analysis module, a fan position optimization analysis module and an analysis result information generation module; the intelligent gear selection analysis module is used to perform intelligent gear selection analysis according to the traffic volume, gas concentration, wind speed in the tunnel and weather data outside the tunnel, and generate gear selection analysis information; the gear content and gear division are pre-determined by the administrator according to the number and arrangement of fans; the fan position optimization analysis module is used to perform fan position optimization analysis according to fan power, gas concentration, fan position and fan start and stop status, and generate position optimization analysis information; the analysis result information generation module is used to generate analysis result information according to the gear selection analysis information and position optimization analysis information.

[0013] Optionally, the feedback control terminal includes an analysis result information reading module, a gear selection control module and a fan position adjustment module; the analysis result information reading module is used to read the analysis result information from the analysis result information generating module; the gear selection control module is used to generate and execute gear selection control instructions according to the gear selection analysis information; the fan position adjustment module is used to generate and execute fan position adjustment instructions according to the position optimization analysis information.

[0014] A novel tunnel ventilation method based on a thrust fan is applied to the novel tunnel ventilation system based on a thrust fan as described above, and the novel tunnel ventilation method comprises:

[0015] S1, real-time monitoring of the working condition data of the thrust fan terminal;

[0016] S2, real-time monitoring of traffic flow, gas concentration, wind speed in the tunnel and weather data outside the tunnel;

[0017] S3, performing intelligent analysis based on the operating condition data of the thrust fan terminal and the traffic volume, gas concentration, wind speed in the tunnel and weather data outside the tunnel, and generating analysis result information;

[0018] S4, generating and executing feedback control instructions according to the analysis result information.

[0019] The beneficial effects achieved by the present invention are:

[0020] 1. Through the setting of thrust fan terminal, working condition data monitoring terminal, tunnel data monitoring terminal, intelligent analysis terminal and feedback control terminal, the thrust fan only needs to be installed at the entrance and exit of the tunnel. Combined with real-time monitoring and intelligent control, it not only saves the pre-buried length of cables when building the system, but also helps to improve the ventilation coverage effect, improves the efficiency and quality of tunnel ventilation under the condition of cost saving, which is conducive to reducing the construction cost of the tunnel ventilation system and improving the effect of tunnel ventilation;

[0021] 2. By setting the number of inlet thrust fan modules and outlet thrust fan modules to at least two and installing them in a uniform arrangement, it is beneficial for the administrator to optimize the gear setting, enrich the control mode, improve the control efficiency and control accuracy of the control process, select the gear as needed, and achieve energy saving in mode control, which is beneficial to saving costs and improving ventilation effects;

[0022] 3. The setting of the inlet thrust fan body and the inlet track moving submodule and the setting of the outlet thrust fan body and the outlet track moving submodule are conducive to intelligently adjusting the specific position of the thrust fan at the corresponding tunnel entrance as needed, which is conducive to adapting to various ventilation scenes, improving the adaptability and accuracy of the tunnel ventilation system, and thus helping to improve the tunnel ventilation effect;

[0023] 4. Through the setting of fan power monitoring module, fan position monitoring module and fan start-stop status monitoring module, the independent acquisition of working condition data is realized, and the acquisition of various working condition data does not interfere with each other, which is conducive to improving the stability and accuracy of working condition data acquisition, thereby improving the ventilation effect of the tunnel;

[0024] 5. Through the setting of vehicle flow monitoring module, gas concentration monitoring module, wind speed monitoring module and weather data monitoring module, the independent acquisition of tunnel data is realized. The acquisition of various tunnel data does not interfere with each other, which is conducive to improving the stability and accuracy of tunnel data acquisition, thereby improving the ventilation effect of the tunnel;

[0025] 6. Through the setting of intelligent gear selection analysis module, fan position optimization analysis module and analysis result information generation module, it is conducive to realizing fast and accurate gear selection analysis and fan position optimization analysis, making the analysis result information more accurate, which is conducive to improving the tunnel ventilation effect;

[0026] 7. By setting the gear selection index calculation submodule and the gear selection analysis information generation submodule in conjunction with the gear selection index calculation algorithm, combined with the number of tunnel thrust fans, installation distribution and gear content settings, the gear selection index is calculated according to the traffic volume, gas concentration, wind speed in the tunnel and weather data outside the tunnel, so that the gear selection index is more compatible with the corresponding tunnel, the gear selection process is more stable and accurate, and the ventilation efficiency is further improved, which is conducive to saving costs and improving ventilation effects;

[0027] 8. Through the setting of the position influence index calculation submodule and the position optimization analysis information generation submodule in conjunction with the position influence index calculation algorithm, the position influence index of the corresponding fan at the current moment is calculated according to the energy consumption score, gas concentration score and airflow distribution score of each position of the fan, and then the optimal position of the corresponding thrust fan in the same gear is determined, thereby improving the fan position optimization effect and efficiency, which is beneficial to saving costs and improving ventilation effects.

[0028] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the inlet thrust fan module in the present invention;

[0031] Figure 3 It is a structural schematic diagram of the outlet thrust fan module in the present invention;

[0032] Figure 4 It is a structural schematic diagram of the intelligent file selection analysis module in the present invention;

[0033] Figure 5 This is a statistical diagram of the results of selecting files under different parameters in the present invention;

[0034] Figure 6 A schematic diagram of a method flow of a novel tunnel ventilation method based on a thrust fan in the present invention;

[0035] Figure 7 It is a structural schematic diagram of a fan position optimization analysis module in another embodiment of the present invention;

[0036] Figure 8 It is a statistical schematic diagram of the results of position optimization of different thrust fans at different times in the present invention. DETAILED DESCRIPTION

[0037] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0038] Embodiment 1: This embodiment provides a new tunnel ventilation system based on thrust fans. Figure 1 As shown, a new type of tunnel ventilation system based on thrust fans includes a thrust fan terminal, a working condition data monitoring terminal, a tunnel data monitoring terminal, an intelligent analysis terminal and a feedback control terminal; the thrust fan terminal is installed at the entrance and exit of the tunnel for ventilating the tunnel; the working condition data monitoring terminal is used for real-time monitoring of the working condition data of the thrust fan terminal; the tunnel data monitoring terminal is used for real-time monitoring of the vehicle flow, gas concentration, wind speed in the tunnel and the weather data outside the tunnel; the intelligent analysis terminal is used for performing intelligent analysis based on the working condition data of the thrust fan terminal and the vehicle flow, gas concentration, wind speed in the tunnel and the weather data outside the tunnel, and generating analysis result information; the feedback control terminal is used for generating and executing feedback control instructions based on the analysis result information.

[0039] The thrust fan terminal includes an inlet thrust fan module and an outlet thrust fan module; the inlet thrust fan module is installed at the tunnel entrance; the outlet thrust fan module is installed at the tunnel exit; the inlet thrust fan module and the outlet thrust fan module work in cooperation with each other to regulate tunnel ventilation.

[0040] Optionally, the number of the inlet thrust fan modules and the outlet thrust fan modules is at least two; the number of the inlet thrust fan modules and the outlet thrust fan modules are the same; the inlet thrust fan modules, which are at least two in number, are arranged in a uniform arrangement at the tunnel entrance; and the outlet thrust fan modules, which are at least two in number, are arranged in a uniform arrangement at the tunnel exit.

[0041] Optional, combined Figure 2 and Figure 3As shown, the inlet thrust fan module includes an inlet thrust fan body and an inlet track moving submodule; the inlet track moving submodule is installed at the tunnel entrance; all the inlet track moving submodules are arranged in a uniform manner at the tunnel entrance; the inlet thrust fan body is connected to the inlet track moving submodule; the inlet track moving submodule is used to adjust the distance between the inlet thrust fan body and the initial position within a specified distance range; the specified distance range is set according to the track travel of the inlet track moving submodule and the administrator's experience; the initial position is pre-set by the administrator; the exit thrust fan module includes an exit thrust fan body and an exit track moving submodule; the exit track moving submodule is installed at the tunnel exit; all the exit track moving submodules are arranged in a uniform manner at the tunnel exit; the exit thrust fan body is connected to the exit track moving submodule; the exit track moving submodule is used to adjust the distance between the exit thrust fan body and the initial position within a specified distance range; the specified distance range is set according to the track travel of the exit track moving submodule and the administrator's experience; the initial position is pre-set by the administrator.

[0042] Optionally, the operating condition data monitoring terminal includes a fan power monitoring module, a fan position monitoring module and a fan start-stop status monitoring module; the fan power monitoring module is used to monitor the fan power of the thrust fan body in real time when it is working; the fan position monitoring module is used to monitor the fan position of the thrust fan body in real time when it is working; the fan start-stop status monitoring module is used to monitor the start-stop status of the thrust fan body during operation in real time.

[0043] Optionally, the tunnel data monitoring terminal includes a vehicle flow monitoring module, a gas concentration monitoring module, a wind speed monitoring module and a weather data monitoring module; the vehicle flow monitoring module is used to monitor the vehicle flow in the tunnel in real time; the gas concentration monitoring module is used to monitor the gas concentration data in the tunnel in real time; the wind speed monitoring module is used to monitor the wind speed in the tunnel in real time; and the weather data monitoring module is used to monitor the weather data outside the tunnel in real time.

[0044] Optionally, the intelligent analysis terminal includes an intelligent gear selection analysis module, a fan position optimization analysis module and an analysis result information generation module; the intelligent gear selection analysis module is used to perform intelligent gear selection analysis according to the traffic volume, gas concentration, wind speed in the tunnel and weather data outside the tunnel, and generate gear selection analysis information; the gear content and gear division are pre-determined by the administrator according to the number and arrangement of fans; the fan position optimization analysis module is used to perform fan position optimization analysis according to fan power, gas concentration, fan position and fan start and stop status, and generate position optimization analysis information; the analysis result information generation module is used to generate analysis result information according to the gear selection analysis information and position optimization analysis information.

[0045] Specific, combined Figure 4 As shown, the intelligent gear selection analysis module includes a gear selection index calculation submodule and a gear selection analysis information generation submodule; the gear selection index calculation submodule is used to calculate the gear selection index according to the vehicle flow, gas concentration, wind speed in the tunnel and the weather data outside the tunnel; the gear selection analysis information generation submodule is used to generate the gear selection analysis information according to the gear selection index.

[0046] For a clearer explanation, in this embodiment, the specific number of fans, fan arrangement, fan position and gear content are preset as follows:

[0047] The number of thrust fan bodies at the tunnel entrance and exit: the number of inlet thrust fan bodies is 5, and the number of outlet thrust fan bodies is 5; the initial position of the fan arrangement: the inlet thrust fan bodies are evenly distributed along the inner wall of the tunnel at the tunnel entrance, with equal intervals, and the outlet thrust fan bodies are evenly distributed along the inner wall of the tunnel at the tunnel exit, with equal intervals; fan position control: the spacing of the inlet thrust fan bodies is adjustable, and the spacing adjustment range is 3m to 6m. The moving distance of the inlet thrust fan bodies into the tunnel is adjustable, and the moving distance adjustment range is 0m to 8m; gear content: when gear one is selected, the inlet thrust fan The number of openings of the main body and the outlet thrust fan body is 1, the opened fan is the closest to the top of the tunnel, and the fan is in the initial position; when gear position 2 is selected, the number of openings of the inlet thrust fan body and the outlet thrust fan body is 2 and close to the top of the tunnel, with a spacing of 3m and a moving distance of 8m; when gear position 3 is selected, the number of openings of the inlet thrust fan body and the outlet thrust fan body is 3 and close to the top of the tunnel, with a spacing of 4m and a moving distance of 3m; when gear position 4 is selected, the number of openings of the inlet thrust fan body and the outlet thrust fan body is 5, with a spacing of 6m and a moving distance of 0m.

[0048] Before and during the first ventilation task on the day of the work, the gear selection index calculation submodule works and performs gear selection analysis according to the following formula. The calculation period during the task execution is set by the administrator and can be but not limited to 1 hour, 6 hours, 12 hours, 24 hours and 48 hours.

[0049]

[0050] Where G represents the gear selection index; δ 1 Indicates the weight coefficient of the real-time parameter item. The more real-time parameters are selected, the greater the weight coefficient of the real-time parameter item. The value range is between 0.5 and 2. The specific value is set by the administrator based on experience; δ 2represents the weight coefficient of the summary parameter item. The more the total number of summary parameters, the greater the weight coefficient of the summary parameter item. The value range is between 0.5 and 1. The specific value is set by the administrator based on experience. C represents the real-time monitoring value of the traffic volume in the tunnel at the calculation time, that is, the number of vehicles per unit time. The unit time can be but is not limited to: every 1 minute, every 1 hour and every 2 hours, etc., preferably every minute. F represents the real-time monitoring value of the wind speed in the tunnel at the calculation time, and the unit of wind speed is m / s. W represents the real-time monitoring value of the relative humidity outside the tunnel at the calculation time. The relative humidity outside the tunnel is the weather data outside the tunnel. J CF represents the value of the interaction effect term between vehicle flow and wind speed; T represents the gas concentration in the tunnel at the time of calculation. The specific gases can be but are not limited to carbon monoxide, sulfur dioxide and nitrogen oxides; β represents the sensitivity normal number. The more types of toxic gases in the tunnel, the smaller the sensitivity normal number. The specific value is set by the administrator based on experience; k 1 , k 2 , k 3 , k 4 and k 5 They represent the normalization coefficients of parameter calculation for different parameters. The larger the value of the parameter item corresponding to the coefficient is, the smaller the normalization coefficient of parameter calculation is. The specific value is set by the administrator based on experience. ref Indicates the reference value of the air pollution index at the tunnel entrance and exit; Z i represents the reading of the i-th air pollution index monitor at the entrance and exit of the tunnel; I represents the total number of air pollution index monitors at the entrance and exit of the tunnel.

[0051] The larger G is, the greater the ventilation demand is, and the gear position is correspondingly increased. Therefore, the specific number of fans, fan arrangement, fan position and gear content preset need to cooperate with each other. The larger the gear, the stronger the ventilation capacity. The number of gears can be but is not limited to 2, 4, 10, 20 and 50. In the example of this embodiment, four gears are provided, and the ventilation capacity of gears one to four gradually increases. When the gear selection analysis information generation submodule generates the gear selection analysis information according to the gear selection index, it can be performed according to the following formula:

[0052]

[0053] Among them, g 1 tog 3 They represent different gear selection thresholds, which are set by the administrator based on experience; S represents the gear position.

[0054] In summary, through the setting of thrust fan terminal, working condition data monitoring terminal, tunnel data monitoring terminal, intelligent analysis terminal and feedback control terminal, the thrust fan only needs to be installed at the entrance and exit of the tunnel. Combined with real-time monitoring and intelligent control, it not only saves the pre-buried length of cables when building the system, but also helps to improve the ventilation coverage effect, and improves the efficiency and quality of tunnel ventilation under the condition of saving costs; by setting the number of inlet thrust fan modules and outlet thrust fan modules to at least two and coordinating the installation method with uniform arrangement, it is beneficial for the administrator to optimize the gear setting, enrich the control mode, improve the control efficiency and control accuracy of the control process, select gears on demand, and achieve energy saving in mode control; by setting the inlet thrust fan body and the inlet track moving submodule and the outlet thrust fan body and the outlet track moving submodule, it is beneficial to intelligently control the specific position of the thrust fan at the corresponding tunnel entrance on demand, which is beneficial to adapt to various ventilation scenes and improve the adaptability and accuracy of the tunnel ventilation system; through the fan power monitoring module, the fan position monitoring module and the fan start-stop status monitoring module The setting of the vehicle flow monitoring module, the gas concentration monitoring module, the wind speed monitoring module and the weather data monitoring module can realize the independent acquisition of the tunnel data, and the acquisition of various tunnel data can be non-interfering with each other, which is conducive to improving the stability and accuracy of the acquisition of tunnel data; the setting of the intelligent gear selection analysis module, the fan position optimization analysis module and the analysis result information generation module is conducive to realizing fast and accurate gear selection analysis and fan position optimization analysis, making the analysis result information more accurate; the setting of the gear selection index calculation submodule and the gear selection analysis information generation submodule is coordinated with the gear selection index calculation algorithm, combined with the number setting, installation distribution and gear content setting of the tunnel thrust fan, and the gear selection index is calculated according to the vehicle flow, gas concentration, wind speed in the tunnel and the weather data outside the tunnel, so that the gear selection index is more compatible with the corresponding tunnel, the gear selection process is more stable and accurate, and the ventilation efficiency is further improved, which is conducive to saving costs and improving ventilation effects.

[0055] Combination Figure 5 , Figure 5 To provide a statistical chart of the results of selecting files under different parameters, the program code for the above calculation process is as follows:

[0056]

[0057]

[0058] Optionally, the feedback control terminal includes an analysis result information reading module, a gear selection control module and a fan position adjustment module; the analysis result information reading module is used to read the analysis result information from the analysis result information generating module; the gear selection control module is used to generate and execute gear selection control instructions according to the gear selection analysis information; the fan position adjustment module is used to generate and execute fan position adjustment instructions according to the position optimization analysis information.

[0059] A novel tunnel ventilation method based on thrust fans, applied to a novel tunnel ventilation system based on thrust fans as described above, combined with Figure 6 As shown, the novel tunnel ventilation method comprises:

[0060] S1, real-time monitoring of the working condition data of the thrust fan terminal;

[0061] S2, real-time monitoring of traffic flow, gas concentration, wind speed in the tunnel and weather data outside the tunnel;

[0062] S3, performing intelligent analysis based on the operating condition data of the thrust fan terminal and the traffic volume, gas concentration, wind speed in the tunnel and weather data outside the tunnel, and generating analysis result information;

[0063] S4, generating and executing feedback control instructions according to the analysis result information.

[0064] Embodiment 2: This embodiment includes all the contents of embodiment 1, and provides a new tunnel ventilation system based on thrust fans, combined with Figure 7 As shown, the fan position optimization analysis module includes a position influence index calculation submodule and a position optimization analysis information generation submodule; the position influence index calculation submodule is used to calculate the position influence index corresponding to the fan at the current moment according to the energy consumption score, gas concentration score and airflow distribution score of each position of the fan; the position optimization analysis information generation submodule is used to generate position optimization analysis information according to the position influence index.

[0065] After the gear selection is completed and the adjustment is performed according to the gear content and the ventilation operation is stably performed, the position influence index calculation submodule calculates the position influence index according to the following formula:

[0066] OPT=min P (λ 1 ·E(P)+λ 2 C(P)+λ 3 ·D(P));

[0067]

[0068] C(P)=η 2 ·e C / V ;

[0069]

[0070] Where OPT represents the position influence index of the optimal position of the thrust fan at the time of calculation; E(P) represents the energy consumption score of position P; M represents the energy consumption value of the thrust fan at position P; p out Represents the output power value of the thrust fan when working at position P; η 1 represents the energy consumption score weight coefficient. The greater the service life of the thrust fan, the greater the energy consumption score weight coefficient. The specific value is set by the administrator based on experience. C(P) represents the gas concentration score of the thrust fan at position P. C represents the gas concentration at position P of the thrust fan. V represents the total volume of the tunnel. η 2 represents the gas concentration score weight coefficient. The smaller the total volume of the tunnel, the larger the gas concentration score weight coefficient. The specific value is set by the administrator based on experience. D(P) represents the airflow distribution score of the thrust fan at position P. H represents the distance value of the thrust fan at position P from the tunnel top. L represents the distance value of the thrust fan at position P from the near side tunnel opening. The near side tunnel opening refers to the tunnel opening that is shorter than the current thrust fan position among the two tunnel openings. η 3 Indicates the weight coefficient of the airflow distribution score. The longer the total length of the tunnel, the greater the weight coefficient of the airflow distribution score. The specific value is set by the administrator based on experience; 1 To 3 They represent different score item coefficients. The specific values ​​are set by the administrator based on experience. The larger the total volume of the tunnel, the greater the value of λ. 1 To 3 The larger the 1 To 3 The numerical relationship between them is gradually decreasing; min P () represents the minimization operation to find the minimum value of the function in the brackets, that is, to find the position P that satisfies the minimum value of the function in the brackets. The point P is the optimal position of the same thrust fan in the same gear at the calculation time, so as to determine the optimal position of the same thrust fan in the same gear at the calculation time.

[0071] In the above formula, the adjustable position P of each thrust fan is completely determined. In the historical work tasks, each thrust fan has also been running in the adjustable position P and generated corresponding data. If the new ventilation system in this embodiment is used in a new tunnel, it is necessary to preset each adjustable position P first, simulate or predict the parameters in the formula corresponding to the adjustable position P, and the parameters involved are: M, p out and C. If you need to outThe administrator may use, but is not limited to: 1. Simulate and set M, p by referring to a tunnel of the same type that has used the ventilation system described in this embodiment. out and C; 2. Set C with reference to the gas concentration data after the new tunnel is opened to traffic; 3. Set M and p with reference to the electrical parameters of the thrust fan out ; 4. Set M and p directly based on work experience out and C;

[0072] 5. Directly measure the corresponding parameters in real time on site. The data of the new ventilation system and the new tunnel during operation will be recorded, and the calculation data will be updated until enough historical data is collected to improve the accuracy of the optimal position determination.

[0073] Specifically, if the cost budget is sufficient, a gas concentration sensor can be provided at each adjustable position P for the value of C at each adjustable position P, which is conducive to improving data accuracy, thereby further improving the accuracy of thrust fan position optimization.

[0074] In summary, through the setting of the position influence index calculation submodule and the position optimization analysis information generation submodule in conjunction with the position influence index calculation algorithm, the position influence index of the fan corresponding to the current moment is calculated according to the energy consumption score, gas concentration score and airflow distribution score of each position of the fan, and then the optimal position of the corresponding thrust fan in the same gear is determined, which improves the fan position optimization effect and efficiency, thereby helping to save costs and improve ventilation effects.

[0075] Combination Figure 8 , Figure 8 The statistical diagram of the results of position optimization of different thrust fans at different times is as follows:

[0076]

[0077]

[0078]

[0079] The contents disclosed above are only preferred feasible embodiments of the present invention, and do not limit the protection scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the protection scope of the present invention. In addition, the elements therein can be updated as technology develops.

Claims

1. A new type of tunnel ventilation system based on thrust fans, characterized in that: It includes a thrust fan terminal, a working condition data monitoring terminal, a tunnel data monitoring terminal, an intelligent analysis terminal and a feedback control terminal; the thrust fan terminal is installed at the entrance and exit of the tunnel to ventilate the tunnel; the working condition data monitoring terminal is used to monitor the working condition data of the thrust fan terminal in real time; the tunnel data monitoring terminal is used to monitor the traffic flow, gas concentration, wind speed in the tunnel and the weather data outside the tunnel in real time; the intelligent analysis terminal is used to perform intelligent analysis based on the working condition data of the thrust fan terminal and the traffic flow, gas concentration, wind speed in the tunnel and the weather data outside the tunnel, and generate analysis result information; the feedback control terminal is used to generate and execute feedback control instructions based on the analysis result information; The thrust fan terminal includes an inlet thrust fan module and an outlet thrust fan module; the inlet thrust fan module is installed at the tunnel entrance; the outlet thrust fan module is installed at the tunnel exit; the inlet thrust fan module and the outlet thrust fan module work in cooperation with each other to regulate tunnel ventilation.

2. A novel tunnel ventilation system based on thrust fans as claimed in claim 1, characterized in that: The number of the inlet thrust fan modules and the number of the outlet thrust fan modules are both at least two; the number of the inlet thrust fan modules and the number of the outlet thrust fan modules are the same; the inlet thrust fan modules, which are at least two in number, are arranged in a uniform arrangement at the tunnel entrance; the outlet thrust fan modules, which are at least two in number, are arranged in a uniform arrangement at the tunnel exit.

3. A novel tunnel ventilation system based on thrust fans as claimed in claim 2, characterized in that: The inlet thrust fan module includes an inlet thrust fan body and an inlet track moving submodule; the inlet track moving submodule is installed at the tunnel entrance; all the inlet track moving submodules are arranged in a uniform manner at the tunnel entrance; the inlet thrust fan body is connected to the inlet track moving submodule; the inlet track moving submodule is used to adjust the distance between the inlet thrust fan body and the initial position within a specified distance range; the outlet thrust fan module includes an outlet thrust fan body and an outlet track moving submodule; the outlet track moving submodule is installed at the tunnel exit; all the outlet track moving submodules are arranged in a uniform manner at the tunnel exit; the outlet thrust fan body is connected to the outlet track moving submodule; the outlet track moving submodule is used to adjust the distance between the outlet thrust fan body and the initial position within a specified distance range; the initial position is pre-set by an administrator.

4. A novel tunnel ventilation system based on thrust fans as claimed in claim 3, characterized in that: The operating condition data monitoring terminal includes a fan power monitoring module, a fan position monitoring module and a fan start-stop status monitoring module; the fan power monitoring module is used to monitor the fan power of the thrust fan body in real time when it is working; the fan position monitoring module is used to monitor the fan position of the thrust fan body in real time when it is working; the fan start-stop status monitoring module is used to monitor the start-stop status of the thrust fan body during operation in real time.

5. A novel tunnel ventilation system based on thrust fans as claimed in claim 4, characterized in that: The tunnel data monitoring terminal includes a vehicle flow monitoring module, a gas concentration monitoring module, a wind speed monitoring module and a weather data monitoring module; the vehicle flow monitoring module is used to monitor the vehicle flow in the tunnel in real time; the gas concentration monitoring module is used to monitor the gas concentration data in the tunnel in real time; the wind speed monitoring module is used to monitor the wind speed in the tunnel in real time; the weather data monitoring module is used to monitor the weather data outside the tunnel in real time.

6. A novel tunnel ventilation system based on thrust fans as claimed in claim 5, characterized in that: The intelligent analysis terminal includes an intelligent gear selection analysis module, a fan position optimization analysis module and an analysis result information generation module; the intelligent gear selection analysis module is used to perform intelligent gear selection analysis based on the traffic volume, gas concentration, wind speed in the tunnel and weather data outside the tunnel, and generate gear selection analysis information; the fan position optimization analysis module is used to perform fan position optimization analysis based on fan power, gas concentration, fan position and fan start and stop status, and generate position optimization analysis information; the analysis result information generation module is used to generate analysis result information based on the gear selection analysis information and the position optimization analysis information.

7. A novel tunnel ventilation system based on thrust fans as claimed in claim 6, characterized in that: The feedback control terminal includes an analysis result information reading module, a gear selection control module and a fan position adjustment module; the analysis result information reading module is used to read the analysis result information from the analysis result information generating module; The gear selection control module is used to generate and execute gear selection control instructions according to the gear selection analysis information; the fan position adjustment module is used to generate and execute fan position adjustment instructions according to the position optimization analysis information.

8. A novel tunnel ventilation method based on a thrust fan, applied to a novel tunnel ventilation system based on a thrust fan as claimed in claim 7, characterized in that: The novel tunnel ventilation method comprises: S1, real-time monitoring of the working condition data of the thrust fan terminal; S2, real-time monitoring of traffic flow, gas concentration, wind speed in the tunnel and weather data outside the tunnel; S3, performing intelligent analysis based on the operating condition data of the thrust fan terminal and the traffic volume, gas concentration, wind speed in the tunnel and weather data outside the tunnel, and generating analysis result information; S4, generating and executing feedback control instructions according to the analysis result information.

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