Efficient and energy-saving tunnel ventilation and dust removal integrated system

Abstract

The invention relates to the technical field of tunnel ventilation and environmental protection, in particular to an efficient and energy-saving tunnel ventilation and dust removal integrated system. Data analysis and decision making; ventilation control; dust removal operation; and sewage treatment. The intelligent sensing module is installed in the tunnel, environment parameters of different positions can be accurately obtained in real time and transmitted to the central control system, the efficient and energy-saving draught fan is selected, the frequency conversion and speed regulation device is installed, energy consumption is reduced, and by arranging the air filtering device and the dust falling device, the dust falling efficiency is improved. The dust collection device and the dust blocking device arranged at the tunnel portal effectively control the air environment quality in the tunnel, sewage purification and cyclic utilization are achieved through sewage treatment, and the system is high in intelligent degree, can be flexibly adjusted according to the actual situation and is suitable for popularization and application. The problems that a traditional ventilation and dust removal mode is high in energy consumption, poor in effect, lack of intelligent control and the like are effectively solved, the health of constructors is guaranteed, and pollution to the surrounding environment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel ventilation and environmental protection, and in particular to an efficient and energy-saving integrated system for tunnel ventilation and dust removal. Background Art

[0002] During tunnel construction, due to operations such as excavation and transportation, a large amount of dust and harmful gases, such as particulate matter, carbon dioxide, carbon monoxide, nitrogen oxides, etc., will be generated. These dust and harmful gases not only pose a serious threat to the respiratory system, skin and other health of construction workers, but also reduce work efficiency and increase construction safety risks. At the same time, the dust and harmful gases generated by tunnel construction will also cause long-term pollution to the surrounding environment, affecting the ecological balance and the quality of life of residents.

[0003] Traditional tunnel ventilation and dust removal methods have many problems. First, ventilation equipment often consumes a lot of energy and has limited ventilation effects, which cannot meet the strict requirements of modern tunnel construction for environmental protection and energy conservation. Secondly, the dust removal methods are single and the effect is poor. Dust and harmful gases easily accumulate in the tunnel, posing a safety hazard. In addition, traditional tunnel ventilation and dust removal systems lack intelligent control and cannot be flexibly adjusted according to the actual situation in the tunnel, resulting in waste of resources and low efficiency.

[0004] Therefore, it is necessary to develop an efficient and energy-saving integrated tunnel ventilation and dust removal system to solve the above-mentioned problems existing in the prior art. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide a tunnel construction waste resource recycling system.

[0006] To achieve the above objectives, the present invention provides a highly efficient and energy-saving integrated tunnel ventilation and dust removal system, comprising the following steps:

[0007] 1) Install an intelligent sensing module in the tunnel to collect real-time data on dust concentration, harmful gas content and wind speed in the tunnel, and transmit the data to the central control system;

[0008] 2) Select high-efficiency and energy-saving fans, arrange the number and location of fans according to the tunnel length and construction requirements, and install variable frequency speed control devices on the fans to adjust the air volume and wind speed according to actual needs to reduce energy consumption;

[0009] 3) Install intelligent air valves on the ventilation ducts to automatically adjust the opening of the air valves according to the instructions of the central control system, control the direction and flow of the air flow, and achieve precise ventilation of different areas in the tunnel;

[0010] 4) Install activated carbon filters and electrostatic precipitators in the ventilation ducts to purify the fresh air entering the tunnel and remove impurities and harmful gases;

[0011] 5) Install spray dust suppression equipment at locations where more dust is generated in the tunnel. The spray dust suppression equipment can automatically start and stop according to the feedback signal of the dust concentration sensor.

[0012] 6) A mobile vacuum truck and fixed vacuum pipes are used to collect dust in the tunnel. The vacuum truck can move flexibly in the tunnel to clean local dust. The fixed vacuum pipes are distributed on both sides of the tunnel and used in conjunction with the vacuum truck to improve the vacuum efficiency.

[0013] 7) Install dust barriers at the tunnel entrance to prevent dust and harmful gases in the tunnel from escaping and reduce pollution to the environment outside the tunnel.

[0014] Furthermore, in the step 1), the installation of the intelligent sensing module includes evenly distributing multiple dust concentration sensors, multiple harmful gas sensors and multiple wind speed sensors in the tunnel along the longitudinal and transverse directions, so as to obtain the environmental parameters of different positions in the tunnel in real time and accurately; the central control system is a computer-based management platform built through the Internet.

[0015] Furthermore, in step 2), the energy-saving fan includes an axial flow or centrifugal high-efficiency energy-saving fan.

[0016] Furthermore, in the step 3), the air valve includes a valve body, the valve body is rotatably connected to a valve plate, a drive motor is fixedly connected to the outer side of the valve body, the drive motor is transmission-connected to the valve plate, and to facilitate controlling the opening and closing angle of the valve plate, the drive motor is also connected to a control module to accurately control the opening of the valve plate according to the instructions of the central control system, thereby adjusting the ventilation volume and ventilation direction of the air valve.

[0017] Furthermore, in the step 5), the locations where more dust is generated include the tunnel face, excavation area and transportation channel.

[0018] Furthermore, in step 7), the dust blocking device includes an air curtain, a physical barrier and an air purification wall. The air curtain forms a barrier by ejecting air at high speed to prevent the overflow of dust and harmful gases; the physical barrier is a dust-proof net woven from high-density polyethylene material; the air purification wall has a built-in air purification device to purify the passing air to further reduce the concentration of dust and harmful gases.

[0019] Furthermore, it also includes a sewage treatment step. The sewage generated during the spray dust reduction and vacuuming process is collected into a sewage treatment system through a drainage pipe. The sewage treatment system uses sedimentation, filtration and disinfection processes to purify the sewage. After meeting the standards, it can be recycled for spray dust reduction or discharged.

[0020] Advantages of the invention: The invention provides an efficient and energy-saving tunnel ventilation and dust removal integrated system. By installing an intelligent sensing module in the tunnel, a variety of sensors are evenly distributed along the longitudinal and transverse directions, and environmental parameters of different positions can be accurately obtained in real time and transmitted to a central control system built on the basis of a computer. An efficient and energy-saving axial flow or centrifugal fan is selected, and a reasonable number and position are arranged, and a variable frequency speed regulating device is installed to reduce energy consumption. The intelligent air valve can accurately control the ventilation volume and direction according to the instruction to achieve precise ventilation. The activated carbon filter and electrostatic precipitator in the ventilation duct purify the fresh air. The automatic start-stop spray dust reduction equipment is installed at the location where the tunnel dust is high. At the same time, a mobile dust collection vehicle and a fixed dust collection duct are combined to collect dust. The dust barrier device at the tunnel entrance includes an air curtain, a dustproof net and an air purification wall, which effectively prevents dust and harmful gases from overflowing. In addition, it also includes a sewage treatment step to achieve sewage purification and recycling. The invention has a high degree of intelligence and can be flexibly adjusted according to actual conditions. It effectively solves the problems of high energy consumption, poor effect, lack of intelligent control, etc. in traditional ventilation and dust removal methods, not only protecting the health of construction personnel, reducing safety risks, but also reducing pollution to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a flow chart of an efficient and energy-saving integrated system for tunnel ventilation and dust removal according to the present invention;

[0022] Figure 2 It is a three-dimensional diagram of an intelligent air valve of a tunnel ventilation and dust removal integrated system with high efficiency and energy saving according to the present invention.

[0023] As shown in the figure: 1. Valve body; 2. Drive motor; 3. Valve plate; 4. Induction module. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is not limited to the specific implementation modes listed below, but also includes any reasonable combination of the specific implementation modes.

[0025] The present invention provides a highly efficient and energy-saving integrated tunnel ventilation and dust removal system, comprising the following steps:

[0026] 1) An intelligent sensing module is installed in the tunnel to collect data related to dust concentration, harmful gas content and wind speed in the tunnel in real time, and transmit the data to a central control system; the intelligent sensing module is installed to evenly distribute multiple dust concentration sensors, multiple harmful gas sensors and multiple wind speed sensors in the tunnel along the longitudinal and transverse directions, so as to obtain environmental parameters at different positions in the tunnel in real time and accurately; the central control system is a management platform based on computers and built through the Internet.

[0027] 2) Select high-efficiency energy-saving fans, arrange the number and position of fans according to the length of the tunnel and construction requirements, and install variable frequency speed control devices on the fans to adjust the air volume and wind speed according to actual needs to reduce energy consumption; the energy-saving fans include axial flow or centrifugal high-efficiency energy-saving fans. According to the length, cross-sectional area, and construction process of the tunnel, the model, quantity, and installation location of the fans should be reasonably determined. The fans use variable frequency speed control technology, which can automatically adjust the air volume and wind speed according to actual needs to achieve energy-saving operation. At the same time, the fans are equipped with noise reduction devices to reduce operating noise and reduce the impact on the construction environment.

[0028] 3) Install an intelligent air valve on the ventilation duct, and automatically adjust the opening of the air valve according to the instructions of the central control system to control the direction and flow of the air flow, so as to achieve precise ventilation of different areas in the tunnel; the air valve includes a valve body 1, and the valve body 1 is rotatably connected to a valve plate 3, and a drive motor 2 is fixedly connected to the outer side of the valve body 1, and the drive motor 2 is transmission-connected to the valve plate 3. In order to facilitate the control of the opening and closing angle of the valve plate 3, the drive motor is also connected to a control module 4, so as to accurately control the opening of the valve plate 3 according to the instructions of the central control system, thereby adjusting the ventilation volume and ventilation direction of the air valve.

[0029] 4) Install activated carbon filters and electrostatic precipitators in the ventilation ducts to purify the fresh air entering the tunnel and remove impurities and harmful gases.

[0030] 5) Install spray dust suppression equipment at locations where more dust is generated in the tunnel. The spray dust suppression equipment can automatically start and stop according to the feedback signal of the dust concentration sensor. The locations where more dust is generated include the tunnel face, excavation area and transportation channel. The spray system is equipped with an intelligent control device that can automatically start and stop according to the feedback signal of the dust concentration sensor and adjust the intensity and range of the spray.

[0031] 6) A combination of mobile vacuum trucks and fixed vacuum pipes is used to collect dust in the tunnel. The vacuum truck can move flexibly in the tunnel to clean local dust. Fixed vacuum pipes are distributed on both sides of the tunnel and used in conjunction with the vacuum truck to improve vacuum efficiency.

[0032] 7) A dust barrier is installed at the tunnel entrance to prevent dust and harmful gases in the tunnel from overflowing and reduce pollution to the environment outside the tunnel. The dust barrier includes an air curtain, a physical barrier and an air purification wall. The air curtain forms a barrier through high-speed air spray to prevent dust and harmful gases from overflowing; the physical barrier is a dust-proof net woven from high-density polyethylene material; the air purification wall has a built-in air purification device to purify the passing air and further reduce the concentration of dust and harmful gases.

[0033] Furthermore, it also includes a sewage treatment step. The sewage generated during the spray dust reduction and vacuuming process is collected into a sewage treatment system through a drainage pipe. The sewage treatment system uses sedimentation, filtration and disinfection processes to purify the sewage. After meeting the standards, it can be recycled for spray dust reduction or discharged.

[0034] The working principle of this system is as follows: various sensors in the intelligent sensing module collect environmental parameters such as dust concentration, harmful gas content, wind speed, etc. in the tunnel in real time, and transmit the data to the data acquisition and transmission unit. After the data is pre-processed by the data acquisition and transmission unit, the data is sent to the central control system through a wired or wireless communication network. After receiving the data, the central control system uses an intelligent decision-making algorithm to conduct an in-depth analysis of the data, and formulates the optimal ventilation and dust removal control strategy in combination with the real-time working conditions of the tunnel and the preset environmental standards. For example, if the dust concentration exceeds the set threshold, the system will automatically increase the spray intensity of the spray dust reduction equipment and the working frequency of the dust collection equipment; if the harmful gas content exceeds the standard, the system will adjust the operating parameters of the ventilation fan to increase the ventilation volume. According to the ventilation control strategy, the central control system sends control instructions to the high-efficiency energy-saving fan and the intelligent air valve. The fan adjusts the operating frequency according to the instructions, changes the air volume and wind speed; the intelligent air valve accurately adjusts the opening according to the instructions, controls the direction and flow of the air flow, and ensures that the ventilation effect in the tunnel is uniform and efficient. At the same time, the air purification device purifies the fresh air entering the tunnel to provide clean air in the tunnel. When the dust concentration sensor detects that the dust concentration exceeds the standard, the central control system immediately starts the spray dust reduction system and dust collection equipment. The spray dust reduction system uses a high-pressure micro-mist nozzle to atomize water into tiny particles, fully mixes with dust, and makes the dust settle to the ground. The dust collection equipment collects dust on the ground and in the air, separates the dust through the filtration system, and stores it in the dust collection box. The dust barrier device is activated at the tunnel entrance and key positions to prevent the overflow of dust and harmful gases and reduce the pollution to the environment outside the tunnel. The sewage generated during the spray dust reduction and dust collection process flows into the sewage treatment system through the drainage pipe. The sewage treatment system precipitates, filters, disinfects and other treatments on the sewage to remove impurities and harmful substances in it, so that the treated water meets the discharge standard or the recyclable standard. The treated water can be used to replenish the water of the spray dust reduction system to realize the recycling of water resources. The intelligent perception module continuously monitors the environmental parameters in the tunnel and feeds back the data to the central control system in real time. The central control system dynamically adjusts the ventilation and dust removal equipment according to the real-time data to ensure that the environment in the tunnel is always in good condition.

[0035] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An energy-efficient integrated tunnel ventilation and dust removal system, characterized in that: The following steps are involved: 1) Install an intelligent sensing module in the tunnel to collect real-time data on dust concentration, harmful gas content and wind speed in the tunnel, and transmit the data to the central control system; 2) Select high-efficiency and energy-saving fans, arrange the number and location of fans according to the tunnel length and construction requirements, and install variable frequency speed control devices on the fans to adjust the air volume and wind speed according to actual needs to reduce energy consumption; 3) Install intelligent air valves on the ventilation ducts to automatically adjust the opening of the air valves according to the instructions of the central control system, control the direction and flow of the air flow, and achieve precise ventilation of different areas in the tunnel; 4) Install activated carbon filters and electrostatic precipitators in the ventilation ducts to purify the fresh air entering the tunnel and remove impurities and harmful gases; 5) Install spray dust suppression equipment at locations where more dust is generated in the tunnel. The spray dust suppression equipment can automatically start and stop according to the feedback signal of the dust concentration sensor. 6) A mobile vacuum truck and fixed vacuum pipes are used to collect dust in the tunnel. The vacuum truck can move flexibly in the tunnel to clean local dust. The fixed vacuum pipes are distributed on both sides of the tunnel and used in conjunction with the vacuum truck to improve the vacuum efficiency. 7) Install dust barriers at the tunnel entrance to prevent dust and harmful gases in the tunnel from escaping and reduce pollution to the environment outside the tunnel.

2. According to claim 1, a highly efficient and energy-saving integrated tunnel ventilation and dust removal system is characterized in that: In the step 1), the installation of the intelligent sensing module includes evenly distributing multiple dust concentration sensors, multiple harmful gas sensors and multiple wind speed sensors in the tunnel along the longitudinal and transverse directions to obtain the environmental parameters of different positions in the tunnel in real time and accurately; the central control system is a management platform based on computers and built through the Internet.

3. The high-efficiency and energy-saving integrated tunnel ventilation and dust removal system according to claim 1 is characterized in that: In the step 2), the energy-saving fan includes an axial flow or centrifugal high-efficiency energy-saving fan.

4. The high-efficiency and energy-saving integrated tunnel ventilation and dust removal system according to claim 1 is characterized in that: In the step 3), the air valve includes a valve body, the valve body is rotatably connected to a valve plate, a drive motor is fixedly connected to the outer side of the valve body, the drive motor is transmission-connected to the valve plate, and in order to facilitate the control of the opening and closing angle of the valve plate, the drive motor is also connected to a control module to accurately control the opening of the valve plate according to the instructions of the central control system, thereby adjusting the ventilation volume and ventilation direction of the air valve.

5. The high-efficiency and energy-saving integrated tunnel ventilation and dust removal system according to claim 1 is characterized in that: In the step 5), the locations where more dust is generated include the tunnel face, excavation area and transportation channel.

6. The high-efficiency and energy-saving integrated tunnel ventilation and dust removal system according to claim 1 is characterized in that: In the step 7), the dust blocking device includes an air curtain, a physical barrier and an air purification wall. The air curtain forms a barrier by ejecting air at high speed to prevent the overflow of dust and harmful gases; the physical barrier is a dust-proof net woven from high-density polyethylene material; the air purification wall has a built-in air purification device to purify the passing air to further reduce the concentration of dust and harmful gases.

7. The high-efficiency and energy-saving integrated tunnel ventilation and dust removal system according to claim 1 is characterized in that: It also includes the step of sewage treatment. The sewage generated during the spray dust reduction and vacuuming process is collected into the sewage treatment system through drainage pipes. The sewage treatment system uses sedimentation, filtration and disinfection processes to purify the sewage. After meeting the standards, it can be recycled for spray dust reduction or discharged.

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