A ring-shaped water curtain device for quickly reducing dust in a diversion tunnel

Abstract

The utility model discloses a kind of annular water curtain devices for diversion tunnel rapid dust fall, it is related to tunnel dust fall setting technical field;Including:conveying pipeline, for semicircular ring structure, in working condition, it is installed on the upper semicircular vault of diversion tunnel body;Water mist sprayer, multiple are provided, multiple water mist sprayer is evenly distributed along the axial direction of conveying pipeline, and the direction of emission is directed to the center of the bending direction of conveying pipeline;Pressurized water pump, water outlet is connected with conveying pipeline, for the conveying pipeline input clean water.The utility model can realize diversion tunnel section 360° dead angle coverage, solve the dust fall defects of existing device, and water mist and dust are in large area contact, dust fall speed is fast, effect is good, applicable to various diversion tunnel construction scene.

Description

Technical Field

[0001] This utility model relates to the technical field of dust suppression devices for tunnels, specifically to an annular water curtain device for rapid dust suppression in water diversion tunnels. Background Technology

[0002] During the construction of water diversion tunnels, the SBE (Screen Enlarged Borehole Machine) and mechanical excavation operations generate a large amount of dust, which not only endangers the health of construction workers but also reduces visibility, seriously affecting construction safety and progress. The existing dust control method for water diversion tunnels is axial flow fan dust removal. However, axial flow fans mainly rely on airflow to remove dust, resulting in poor dust suppression targeting and an inability to accurately capture dust particles. Their effectiveness in reducing dust concentrations in localized high-concentration areas is limited. Furthermore, the strong airflow is highly likely to blow dust to other areas, expanding the pollution range and making effective control difficult, easily leading to dust diffusion. Moreover, to achieve the required dust removal effect, the machines need to operate continuously at high intensity, significantly increasing construction costs over long periods. Energy consumption is also high, and both purchase and rental costs are substantial. Additionally, the airflow generated by axial flow fans is insufficient to remove fine dust particles, resulting in weak dust suppression efficiency. Summary of the Invention

[0003] To address the technical problems existing in the dust removal of water diversion tunnels using axial flow fans, this utility model provides an annular water curtain device for rapid dust reduction in water diversion tunnels. It can achieve 360° coverage of the cross-section of the water diversion tunnel without dead angles, with fast dust reduction speed and good effect, and is suitable for various water diversion tunnel construction scenarios.

[0004] This utility model is achieved through the following technical solution: This utility model provides an annular water curtain device for rapid dust suppression in water diversion tunnels, comprising: a conveying pipe, which is a semi-circular annular structure and is fitted onto the upper semi-circular arch of the water diversion tunnel in the working state; multiple water mist nozzles, which are evenly distributed along the axial direction of the conveying pipe and spray in the direction of the pipe's curvature; and a pressurized water pump, whose outlet is connected to the conveying pipe for supplying clean water to the conveying pipe.

[0005] This utility model provides an annular water curtain device for rapid dust suppression in water diversion tunnels, comprising a delivery pipe and a pressurized water pump. The delivery pipe has a semi-circular structure and is fitted to the upper semi-circular arch of the water diversion tunnel in the working state, so that the delivery pipe is installed concentrically with the upper semi-circle of the water diversion tunnel after being installed on the arch. The pressurized water pump is connected to the delivery pipe, and multiple water mist nozzles are evenly distributed around the circumference of the delivery pipe, so that clean water is sprayed from the water mist nozzles after the pressurized water pump is connected to a water source (water storage tank). The water mist nozzles are evenly distributed around the circumference of the conveying pipeline, and the spray direction of the water mist nozzles points to the center of the bend in the conveying pipeline. Therefore, an annular water curtain can be formed to cover the end face of the water diversion tunnel 360°. This allows the water mist to fully contact the dust in the tunnel air, thereby achieving rapid settling of dust in the tunnel, achieving the purpose of dust reduction, solving the problem of dust suppression dead zones, and cutting off the dust generation area at the annular water curtain to prevent dust diffusion. This ensures the smooth progress of tunnel construction and is suitable for various water diversion tunnel construction scenarios.

[0006] The annular water curtain effectively captures dust, preventing its spread. It has a good dust reduction effect and high efficiency, and does not have the problems of continuous high-intensity operation of the machine or high purchase and rental costs. It can reduce energy consumption and construction costs, meet the requirements of green construction, and is easy to start and stop in real time according to the dust concentration, saving energy and water resources while effectively reducing dust.

[0007] In an optional embodiment of this application, a water storage container is also included, with the inlet of the pressurized water pump connected to the water storage container, so as to store clean water source through the storage container, avoid pollution of clean water source due to construction, and also get rid of dependence on construction water source.

[0008] In an optional embodiment of this application, a backup container is also included. The backup container is connected to the outlet pipe of the water storage container via an activation switch valve, so as to easily store backup clean water and ensure that the device operates continuously and stably during construction, avoiding the impact of water supply interruption on the dust suppression effect.

[0009] In an optional embodiment of this application, the water storage container is equipped with a level switch, which is controlled and connected to the activation switch valve. When the water level in the water storage container drops to the warning level, the level switch controls the activation switch valve to open, so as to automatically switch to the backup container for water supply when the water level in the water storage container drops to a certain threshold.

[0010] In an optional embodiment of this application, the water storage container and the backup container are arranged longitudinally side by side to reduce the cross-sectional space occupied by the water source in the water diversion tunnel and avoid interfering with construction.

[0011] In an optional embodiment of this application, a filter is also included, which is connected in series between the pressurized water pump and the delivery pipeline to filter out impurities in the water flow output by the pressurized water pump, thereby avoiding pipe blockage and nozzle damage, ensuring that the spraying process can proceed smoothly, and maintaining the normal operation of the entire dust suppression system.

[0012] In an optional embodiment of this application, multiple conveying pipes are arranged longitudinally at intervals, and each conveying pipe is equipped with multiple water mist nozzles to ensure that the dust suppression device can form multiple water curtains and prevent dust from escaping from the construction section of the water diversion tunnel.

[0013] In an optional embodiment of this application, the adjacent conveying pipelines are connected by an arch-top connecting pipe. When in operation, the arch-top connecting pipe is installed on the arch of the water diversion tunnel. This ensures the uniformity of moisture content distribution and reduces the space occupied by the dust suppression device on the ground of the water diversion tunnel, thereby minimizing interference with construction.

[0014] In an optional embodiment of this application, the conveying pipe is provided with three pipes.

[0015] In an optional embodiment of this application, each of the conveying pipes is provided with 7 water mist nozzles.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. The annular water curtain device for rapid dust suppression in water diversion tunnels provided by this utility model includes a conveying pipe and a pressurized water pump. The conveying pipe has a semi-circular structure and is fitted onto the upper semi-circular arch of the water diversion tunnel in the working state, so that the conveying pipe is installed concentrically with the upper semi-circle of the water diversion tunnel after being installed on the upper semi-circle of the arch. The pressurized water pump is connected to the conveying pipe, and multiple water mist nozzles are evenly distributed around the circumference of the conveying pipe, so that clean water is dispensed from the water mist nozzles after the pressurized water pump is connected to a water source (water storage tank). The water mist is sprayed upwards. Because the water mist nozzles are evenly distributed around the circumference of the conveying pipeline and the spray direction of the water mist nozzles is pointed towards the center of the bend in the conveying pipeline, an annular water curtain can be formed to cover the end face of the water diversion tunnel 360°. This allows the water mist to fully contact the dust in the tunnel air, thereby achieving rapid settling of dust inside the tunnel, achieving the purpose of dust reduction, solving the problem of dust suppression dead zones, and cutting off the dust generation area at the annular water curtain to prevent dust diffusion, ensuring the smooth progress of tunnel construction. It is suitable for various water diversion tunnel construction scenarios.

[0017] 2. The annular water curtain device for rapid dust suppression in water diversion tunnels provided by this utility model can effectively capture dust and prevent dust from spreading. It has a good dust suppression effect and high dust suppression efficiency. It does not have the problems of continuous high-intensity operation of the machine and high purchase and rental costs. It can reduce energy consumption and construction costs, meet the requirements of green construction, and is also easy to start and stop in real time according to the dust concentration. It saves energy and water resources while effectively suppressing dust. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] In the attached diagram: Figure 1 A schematic diagram of the cross-sectional structure after installing the annular water curtain device for rapid dust suppression in a water diversion tunnel, as provided in this embodiment of the utility model. Figure 2 A cross-sectional structural diagram of the annular water curtain device for rapid dust suppression in a water diversion tunnel, as provided in this embodiment of the utility model, after installation inside the tunnel.

[0020] The attached diagram shows the markings and corresponding component names: 1-Transportation pipeline, 2-Water intake tunnel, 3-Water mist nozzle, 4-Pressure pump, 5-Water storage container, 6-Spare container, 7-Filter, 8-Arc top connecting pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] In the description of the embodiments of this application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0025] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example

[0026] Combination Figure 1 and Figure 2 This embodiment provides an annular water curtain device for rapid dust suppression in water diversion tunnels, comprising: a conveying pipe 1, which is a semi-circular annular structure and is fitted onto the upper semi-circular arch of the water diversion tunnel body 2 in the working state; multiple water mist nozzles 3, which are evenly distributed along the axial direction of the conveying pipe 1 and spray in the direction of the bend of the conveying pipe 1; and a pressurized water pump 4, whose outlet is connected to the conveying pipe 1 for supplying clean water to the conveying pipe 1.

[0027] Continue to combine Figure 2 The conveying pipe 1 is arranged longitudinally at multiple intervals, and each conveying pipe 1 is equipped with multiple water mist nozzles 3 to ensure that the dust suppression device can form multiple water curtains to prevent dust from escaping from the construction section of the water diversion tunnel.

[0028] It is understood that the adjacent conveying pipes 1 are connected by the arch connecting pipe 8. When in operation, the arch connecting pipe 8 is installed on the arch of the water diversion tunnel. On the one hand, this can ensure the uniformity of moisture content conveying and distribution. On the other hand, it can reduce the space occupied by the dust suppression device on the ground of the water diversion tunnel, thereby reducing interference with construction.

[0029] Specifically, this embodiment includes three conveying pipes 1, each equipped with seven water mist nozzles 3. The conveying pipes 1 connect to the opening and are arranged circumferentially along the arch of the water intake tunnel 2. Each conveying pipe 1 is longitudinally connected via an arch connecting pipe 8, achieving a combined circumferential and longitudinal arrangement. This ensures even water distribution within the water supply lines, guaranteeing a stable and appropriate water volume for each water mist nozzle 3, thereby ensuring the formation of a uniformly covered annular water curtain.

[0030] The water mist nozzles 3 are evenly distributed along the top arch, with 7 water mist nozzles 3 arranged on each water curtain. The direct spray distance of the water mist nozzles 3 is 2m. Thus, under the action of the water flow delivered by the conveying pipe 1, the water mist nozzles 3 spray the water at a set angle and pressure to form a ring-shaped water curtain.

[0031] The booster pump 4 needs to be able to output a certain water pressure to ensure that the water flow has sufficient power to ensure that a stable and impactful annular water curtain is formed at the water mist nozzle 3 in the delivery pipeline 1. A centrifugal water pump with a power of 7.5 kW and a flow rate of 3 m³ / h can be used.

[0032] It should be understood that this embodiment also includes a water storage container 5, and the inlet of the pressurized water pump 4 is connected to the water storage container 5 so as to store clean water source through the storage container, avoid the clean water source from being polluted by construction, and also get rid of the dependence on construction water source.

[0033] Based on this, this embodiment also includes a backup container 6, which is connected to the outlet pipe of the water storage container 5 by an activation switch valve, so as to easily store backup clean water and ensure that the device operates continuously and stably during construction, avoiding the impact of water supply interruption on the dust suppression effect.

[0034] The water storage container 5 is equipped with a level switch, which is connected to the activation switch valve. When the water level in the water storage container 5 drops to the warning level, the level switch controls the activation switch valve to open, so that when the water level in the water storage container 5 drops to a certain threshold, the water supply is automatically switched to the backup container 6.

[0035] Furthermore, the water storage container 5 and the backup container 6 are arranged longitudinally side by side to reduce the cross-sectional space occupied by the water source in the water diversion tunnel and avoid interfering with construction.

[0036] Specifically, in this embodiment, the water source tank consists of one main water tank and one backup water tank. Both are of the same specifications, being cylindrical structures with a height of 2m and a diameter of 1.5m. The combined water storage capacity of the two tanks is 353m³, thus ensuring that they can provide sufficient clean water.

[0037] For level switches, there can be either float-type or electronic level switches. When the level switch is a float-type, the activation valve can be a mechanical valve linked to the level switch (opened by the gravity of the float) or an electric valve (opened by the float energizing a power switch). When the level switch is an electronic level switch, the activation valve is an electric valve that automatically opens upon receiving a feedback signal from the level switch.

[0038] In addition, this embodiment also includes a filter 7, which is connected in series between the pressurized water pump 4 and the delivery pipe 1 to filter out impurities in the water output from the pressurized water pump 4, thereby avoiding pipe blockage and nozzle damage, ensuring smooth spraying, and maintaining the normal operation of the entire dust suppression system.

[0039] In summary, the annular water curtain device for rapid dust suppression in water diversion tunnels provided in this embodiment includes a delivery pipe 1, a pressurized water pump 4, a filter 7, and a water tank. In use, the delivery pipe 1 is fitted and installed against the upper semicircular arch of the water diversion tunnel body 2, so that the delivery pipe 1 is installed concentrically with the upper semicircle of the water diversion tunnel arch. The pressurized water pump 4 is connected to the water tank so that clean water is sprayed from the water mist nozzles 3 via the pressurized water pump 4.

[0040] Since the water mist nozzles 3 are evenly distributed around the circumference of the conveying pipe 1 and the spray direction of the water mist nozzles 3 is directed towards the center of the bend in the conveying pipe 1, an annular water curtain can be formed to cover the end face of the water diversion tunnel in 360°. This allows the water mist to fully contact the dust in the tunnel air, thereby achieving rapid settling of dust in the tunnel, achieving the purpose of dust reduction, solving the problem of dust suppression dead zones, and cutting off the dust generation area at the annular water curtain to prevent dust diffusion, ensuring the smooth progress of tunnel construction. This method is suitable for various water diversion tunnel construction scenarios.

[0041] The annular water curtain effectively captures dust, preventing its spread. It has a good dust reduction effect and high efficiency, and does not have the problems of continuous high-intensity operation of the machine or high purchase and rental costs. It can reduce energy consumption and construction costs, meet the requirements of green construction, and is easy to start and stop in real time according to the dust concentration, saving energy and water resources while effectively reducing dust.

[0042] In summary, this embodiment can achieve 360° coverage of the water diversion tunnel cross section without dead angles, with fast dust reduction speed and good effect, and is suitable for various water diversion tunnel construction scenarios.

[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A ring-shaped water curtain device for rapid dust suppression in water diversion tunnels, characterized in that, include: The conveying pipeline (1) is a semi-circular ring structure, which is installed on the upper semi-circular arch of the water diversion tunnel (2) in the working state; Multiple water mist nozzles (3) are provided, and the multiple water mist nozzles (3) are evenly distributed along the axial direction of the conveying pipe (1), and the spraying direction is directed towards the center of the bending direction of the conveying pipe (1). A pressurized water pump (4) has its outlet connected to the conveying pipe (1) and is used to input clean water into the conveying pipe (1); The water storage container (5) is connected to the inlet of the pressurized water pump (4); The spare container (6) is connected to the outlet pipe of the water storage container (5) by activating the switch valve; The water storage container (5) is equipped with a liquid level switch, which is connected to the activation switch valve. When the liquid level in the water storage container (5) drops to the warning level, the liquid level switch controls the activation switch valve to open.

2. The annular water curtain device for rapid dust suppression in water diversion tunnels according to claim 1, characterized in that, The water storage container (5) and the spare container (6) are arranged longitudinally side by side.

3. The annular water curtain device for rapid dust suppression in water diversion tunnels according to claim 1, characterized in that, It also includes a filter (7) connected in series between the pressurized water pump (4) and the delivery pipe (1).

4. The annular water curtain device for rapid dust suppression in water diversion tunnels according to any one of claims 1 to 3, characterized in that, The conveying pipes (1) are arranged longitudinally at intervals, and each conveying pipe (1) is adapted to multiple water mist nozzles (3).

5. The annular water curtain device for rapid dust suppression in water diversion tunnels according to claim 4, characterized in that, The adjacent conveying pipes (1) are connected by an arch connecting pipe (8), which is installed on the arch of the water diversion tunnel in the working state.

6. The annular water curtain device for rapid dust suppression in water diversion tunnels according to claim 4, characterized in that, The conveying pipeline (1) is provided with three pipes.

7. The annular water curtain device for rapid dust suppression in water diversion tunnels according to claim 4, characterized in that, Each of the aforementioned conveying pipes (1) is equipped with 7 of the aforementioned water mist nozzles (3).

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