A tethered aerostat dust suppression system and method

Abstract

The application provides a tethered floating dust-settling system and a dust-settling method. The tethered floating dust-settling system comprises a dust-settling device, which comprises a tethering rope, a spraying part and a plurality of floating parts. The plurality of floating parts are connected through a support. The spraying part is connected with the support through a first connecting piece. The spraying part is communicated with a water supply equipment through a water supply pipe. The first end of the tethering rope is connected with the support, and the second end is connected with a fixed base. The application provides a dust-settling method. A plurality of dust-settling devices are arranged at intervals in a predetermined area. Each floating part is started respectively, so that the spraying part is suspended to a predetermined height. The spraying part sprays water through the water supply equipment, and a dust-settling barrier is formed. The application has the beneficial effects that the dust-settling height and range adjustment flexibility are improved through the plurality of floating parts, the dust-settling stability is improved through the tethering rope, and different construction environments and dust-settling requirements are adapted.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and in particular relates to a tethered floating dust suppression system and dust suppression method. Background Technology

[0002] In existing technologies, construction dust control often employs methods such as water trucks and perimeter fencing spraying. However, water trucks struggle to cover dust at higher elevations, and perimeter fencing spraying is limited by the fixed position of the fencing structure, restricting its coverage height and location. These methods present technical challenges, including limitations on dust suppression height and range, and impacting dust suppression effectiveness. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a tethered floating dust suppression system and method, which is particularly suitable for construction sites and other work environments requiring large-scale dust suppression.

[0004] The technical solution adopted in this invention is: a tethered floating dust suppression system, including a dust suppression device, the dust suppression device including a tethering rope, a spraying part and multiple floating parts, the multiple floating parts being connected by a support, the spraying part being connected to the support by a first connector, the spraying part being connected to a water supply device by a water supply pipe, the first end of the tethering rope being connected to the support, and the second end being connected to a fixed foundation.

[0005] Furthermore, multiple floating components are evenly distributed along the circumference.

[0006] Furthermore, the number of first connectors is multiple and they are evenly distributed along the circumference.

[0007] Furthermore, the lengths of the multiple first connectors are equal.

[0008] Furthermore, the spraying unit includes a spraying body, which is connected between the first connector and the water supply pipe, and the spraying body is provided with multiple spray heads along the circumference.

[0009] Furthermore, it also includes a winding section, which includes a base fixed to a fixed foundation and a rotating shaft rotatably connected to the base, with a tether rope wound around the rotating shaft.

[0010] Furthermore, the present invention also provides a dust suppression method utilizing the above-mentioned tethered floating dust suppression system, comprising the following steps:

[0011] Multiple dust suppression devices are spaced apart in a predetermined area;

[0012] Each levitation unit is activated to suspend the spraying unit at a predetermined height. Water is then sprayed from the spraying unit via the water supply equipment to form a dust suppression barrier.

[0013] The advantages and positive effects of this invention are as follows: by adopting the above technical solution, the flexibility of adjusting the height and range of dust suppression is improved by using multiple floating parts, and the stability of dust suppression is improved by using tethering ropes; it has the advantages of simple structure, improved adaptability to different construction environments and dust suppression needs, and rapid deployment. Attached Figure Description

[0014] Figure 1 This is a schematic plan view of the combined structure of multiple floating parts in one embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram showing the connection relationship between multiple floating parts and spraying parts in one embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram illustrating a usage scenario of one embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the winding section in another embodiment of the present invention;

[0018] In the picture:

[0019] 1. Floating section; 2. Support frame; 3. First connecting piece; 4. Spraying body; 5. Spray head; 6. Water supply pipe; 7. Wire; 8. Water turbine generator; 9. Energy storage section; 10. Mooring rope; 11. Base; 12. Rotating shaft; 13. Bearing seat. Detailed Implementation

[0020] The embodiments of the present invention will now be described with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar units or units having the same or similar functions throughout.

[0022] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that terms such as "installation," "connection," and "fixing" should be interpreted broadly, and can refer to direct connection, installation, or fixing, or indirect connection, installation, or fixing. The present invention does not impose any limitations in this regard.

[0023] like Figures 1 to 3The diagram shows an embodiment of the tethered floating dust suppression system of the present invention, comprising one or more dust suppression devices. Each dust suppression device includes a tethering rope 10, a spraying section, and multiple floating sections 1. The multiple floating sections 1 are connected by a support 2. The spraying section is connected to the support 2 via a first connector 3 and is connected to a water supply device via a water supply pipe 6. The first end of the tethering rope 10 is connected to the support 2, and the second end is connected to a fixed foundation. Preferably, the floating section 1 is a conventional ducted fan.

[0024] By cooperating with multiple floating parts 1, the flexibility of the spraying unit height setting is improved. The spraying unit is suspended below the bracket 2 through the first connector 3, which is simple in structure and reduces manufacturing cost. The floating part 1 is connected to the fixed foundation by the tethering rope 10, which limits the floating range and improves the stability of the dust suppression process. The water supply pipe 6 supplies water from the ground and sprays water droplets through the spraying unit. The water droplets come into full contact with the dust particles in the air, so that the dust particles adhere to the water droplets and then settle to the ground, thus achieving dust suppression.

[0025] Multiple buoyancy units 1 are evenly distributed along the circumference, which makes the thrust distribution uniform, reduces the risk of tilting when airborne, and improves flight stability.

[0026] The first connector 3 is multiple and evenly distributed along the circumference, so that the spraying part is subjected to uniform tension from all directions, reducing sway.

[0027] The lengths of the multiple first connectors 3 are equal, so that the spraying part is located directly below the center of the pattern formed by the multiple floating parts 1, and naturally maintains a vertical posture when suspended.

[0028] The spraying unit includes a spraying body 4, which is connected between the first connector 3 and the water supply pipe 6. Multiple spray heads 5 are arranged circumferentially on the spraying body 4 to increase the dust suppression coverage. Preferably, the spray heads 5 are conventional water mist spray heads.

[0029] Preferably, in different embodiments, such as Figure 4 As shown, the dust suppression device also includes a winding section, which includes a base 11 fixed to a fixed foundation and a rotating shaft 12 rotatably connected to the base 11. The tether rope 10 is wound around the rotating shaft 12. The winding section realizes the release and retraction of the tether rope 10 through the base 11 and the rotating shaft 12. The rotating shaft 12 can rotate in a matching manner as the floating part 1 rises to release the tether rope 10, and can also rotate in the opposite direction when the floating part 1 descends to retract the tether rope 10, making operation convenient.

[0030] On the other hand, the present invention also provides a dust suppression method, utilizing the above-mentioned tethered floating dust suppression system, comprising the following steps:

[0031] Multiple dust suppression devices are spaced apart in a predetermined area;

[0032] Each floating section 1 is activated to suspend the spraying section at a predetermined height. Water is then sprayed from the spraying section through the water supply equipment to form a dust suppression barrier.

[0033] Multiple dust suppression devices are arranged at intervals, and the water sprayed by multiple spraying units forms continuous or discontinuous dust suppression barriers in space, which can effectively restrict the spread of dust outside the construction area and improve the overall dust suppression efficiency.

[0034] Example 1:

[0035] like Figures 1 to 3 As shown, the floating section 1 of each dust suppression device is composed of a ducted fan. The ducted fan is a conventional device in the art, comprising a duct body, a fan motor, and multi-bladed fan blades. The fan motor is fixed to a mounting bracket inside the duct body, and the fan blades are bolted to the output shaft of the fan motor. Those skilled in the art can select a suitable ducted fan model and fan motor power control parameters through conventional calculations based on the required floating height and total load weight. In this embodiment, the number of ducted fans is six.

[0036] The bracket 2 is used to connect multiple ducted fans into a single unit. The bracket 2 is made of high-strength, low-density materials, such as carbon fiber composites or aluminum alloys, to reduce the equipment's weight while ensuring structural strength. The bracket 2 can be a ring-shaped integral frame. For example, in other embodiments, the ring-shaped bracket has mounting seats at equal angles along its circumference, and the mounting seats are bolted to the ducted fans; or, for example, in this embodiment, the bracket 2 is composed of multiple arc-shaped connecting rod assemblies, and the number of connecting rod assemblies is the same as the number of ducted fans. Every two adjacent ducted fans are connected by a connecting rod assembly, and the connection method can be conventional mechanical connection such as welding or bolts. A connecting ring or connecting ear plate is provided on the bracket 2 between adjacent ducted fans for connecting the first connecting member 3 that suspends the spray section. In this embodiment, the multiple ducted fans and the bracket 2 together form a centrally symmetrical thrust structure, improving stability during low-altitude suspension and helping to reduce the risk of tilting and swaying.

[0037] The first connecting member 3 uses a flexible connecting line (such as a steel wire rope). The spraying unit includes a spraying body 4 and multiple spray heads 5. The spraying body 4 is a hollow cavity structure with an internal water flow channel. Its inlet is connected to the water supply pipe 6, and multiple spray heads 5 are evenly arranged around its circumference to distribute water from the water supply pipe 6 to each spray head 5. The spraying body 4 is provided with multiple connecting rings or connecting lugs, and their number is equal to the number of the first connecting member 3, for connecting the second end of the first connecting member 3. The multiple connecting lines are of equal length, so that the spraying body 4 is suspended below the bracket 2 and located on the central axis of the pattern formed by multiple ducted fans, improving the uniformity and stability of the spraying.

[0038] Multiple spray heads 5 are evenly arranged circumferentially around the outer periphery of the spray body 4. The spray heads 5 are fixed to the spray body 4 by threaded connection or snap-fit. For example, the outer periphery of the spray body 4 has multiple installation interfaces, each with an internal thread on its inner wall. The water inlet end of the spray head 5 has a matching external thread, and the two are connected by threads and sealed with PTFE tape. Alternatively, a quick-clamping structure can be used, with sealing rings and spring clips to achieve quick installation and removal of the spray head 5, facilitating maintenance and replacement. The spray heads 5 are conventional atomizing nozzles, which can form fine water droplets or mist when high-pressure water flows through them. The specific selection of the spray head 5 can be based on the general technical knowledge of those skilled in the art and can be conventionally selected according to the required dust suppression needs.

[0039] The water supply pipe 6 is a flexible water pipe, one end of which is connected to the water inlet on the spray body 4 via a quick connector, and the other end is connected to a water supply device (such as a water tank, water pump, or municipal water supply interface) installed on the ground via a water pipeline. The quick connector adopts a conventional snap-fit ​​or threaded structure in this field, and a sealing ring is provided between the water pipe and the spray body 4 to reduce the risk of leakage under water supply pressure.

[0040] Preferably, it also includes an energy storage unit 9, which supplies power to the buoyancy unit 1. For example, the energy storage unit 9 is a lithium battery electrically connected to the fan motor of the ducted fan via wire 7. A water turbine generator 8 is connected in series in the water supply pipeline, and the water flows to the spraying unit after passing through the water turbine generator 8. The water turbine generator 8 is connected to the energy storage unit 9 (lithium battery) through a charging control circuit, which can switch between charging mode and no-load mode. When the dust at the construction site is not serious and the requirement for spraying water pressure is low, the charging control circuit switches the water turbine generator 8 to charging mode. The water flow drives the turbine to rotate, which drives the generator to generate electricity to replenish the energy storage unit 9 (lithium battery). At this time, the water pressure is reduced after passing through the turbine, but it can still meet the dust suppression requirements under light dust conditions. When the dust at the construction site is serious and it is necessary to increase the spraying water pressure to enhance the dust suppression effect, the charging control circuit switches the water turbine generator 8 to no-load mode (stop charging). At this time, the generator does not generate additional resistance to the water flow, the water pressure loss is minimized, and the spraying unit can obtain higher water pressure, thereby more effectively suppressing severe dust. The control method for switching the hydro-generator 8 to charging mode or no-load mode via the charging control circuit is existing technology.

[0041] The tethering rope 10 is made of high-strength nylon rope or steel wire rope, and its first end is fixed to the support 2 by a tethering ring or a buckle. The fixed foundation can be the ground, counterweight, or fixed piles on the construction platform, etc., which can be flexibly selected according to the actual construction environment. The second end of the tethering rope 10 is fixedly connected to the fixed foundation by a hook or a buckle. The length of the tethering rope 10 can be preset according to the floating height requirements of the construction area. When the floating part 1 rises to the point where the tethering rope 10 is taut, the tethering rope 10 restricts its further rise, thereby limiting the floating range of the floating part 1, reducing the risk of it deviating from the preset area under the action of wind, and improving the safety of the dust suppression process.

[0042] In one specific embodiment, the relevant parameter settings and dust reduction method process are as follows:

[0043] S1. Pre-construction preparation stage:

[0044] Investigate the dust-affected areas and determine dust parameters.

[0045] The equipment status was checked, including the ducted fan's individual thrust of 50N-80N, the lithium battery voltage of 48V and capacity of 200Ah, the water pipe diameter of 50mm and the working pressure of 1.2MPa. At the same time, the performance of the ducted fan's fan motor and fan blades was tested, and the signal of the wireless communication module between the control system and the ducted fan was tested to confirm that the control commands could be accurately transmitted to the corresponding equipment end of the dust suppression device and that all core components were functioning normally, thereby reducing potential quality risks.

[0046] Develop a dust suppression operation plan, such as a floating height of 5m-20m, a coverage radius of 10m-15m, and a water curtain flow rate of 5L / min-15L / min.

[0047] S2. Dust suppression operation phase:

[0048] When the equipment is started, the floating part 1 is powered on, with a total power of 3kW-6kW and a starting current not exceeding 100A.

[0049] The ducted fan thrust is adjusted to initiate ascent, allowing it to rise slowly at a speed of 0.5m / s-1m / s, with a stable levitation accuracy of ±0.5m and a wind resistance level not exceeding level 6. During ascent, the operating status of the ducted fans and the stress on the mooring rope 10 are closely monitored. The thrust generated by multiple ducted fans overcomes their own weight, as well as the weight of components such as the water supply pipe 6 and the spray unit, achieving low-altitude levitation and maintaining stability in the air.

[0050] After the ducted fan levitates to the predetermined height and position, the tether rope 10 is fixed. The tether rope 10 has a diameter of 8mm and a tensile strength of not less than 5kN, and its position adjustment range is within a radius of 30m. The tether rope 10 can provide stable restraint for the ducted fan when it is levitating, without affecting its normal lifting and horizontal movement. By limiting the floating position and height of the ducted fan by the tether rope 10, the dust suppression effect and safety are improved.

[0051] When the water supply system is started, the water pipe is 30m-50m long and the filtration accuracy is no more than 50μm. Water is delivered to the spraying body 4 through the water supply pipe 6 and sprayed into the air in the form of water mist through the spray head 5. The water mist comes into contact with the dust particles in the air, causing the dust particles to adhere to the water droplets and then settle to the ground, thus achieving dust suppression.

[0052] Select the treatment method based on the dust concentration:

[0053] When the dust is relatively light, water is supplied to the spraying section at a low pressure. At the same time, the water flow drives the turbine of the water turbine generator 8 to rotate. The turbine speed is 1500r / min-2000r / min, the flow rate is 5L / min-8L / min, and the working water pressure is 0.3MPa-0.5MPa. The water turbine generator 8 replenishes the lithium battery of the energy storage section 9 with a power output of 300W-500W, a charging current of 5A-10A, and a conversion efficiency of not less than 75%.

[0054] When dust is severe, switch the water turbine generator 8 to no-load mode (stop charging). The lithium battery can work continuously for no less than 4 hours after a single charge. It supplies water to the spraying section with high water pressure, with a working water pressure of 0.8MPa-1.2MPa and a flow rate of 10L / min-15L / min.

[0055] When dust suppression is carried out under the above two dust conditions, the water spraying unit can form mist droplets with a diameter of 50-100μm, and the dust suppression coverage area is 300㎡-500㎡. Multiple dust suppression devices are set up at intervals to form a water curtain barrier, and the deployment method can be flexibly applied to different construction scenarios.

[0056] The system monitors dust levels in real time and adjusts equipment parameters accordingly. During monitoring, a conventional dust concentration sensor can be used, with a detection range of 0-10 mg / m³. The data transmission interval is 5 seconds, and the remote control response time is no more than 1 second.

[0057] Once the dust suppression standard is met, stop the water supply and lower the ducted fan. Allow the ducted fan to slowly descend to the ground at a speed of 0.3m / s-0.5m / s. Closely monitor the descent speed and status during the process to minimize the risk of damage from rapid descent. Perform a 10-second self-check before shutdown. Disconnect the lithium battery from all components. Clean and inspect the dust suppression device, removing any residual water from the spray nozzles and water supply pipes 6. Ensure the residual water level in the pipes does not exceed 100ml. Repair or replace any damaged parts promptly. Store the equipment properly for future use.

[0058] It should be noted that the above equipment parameters can be adjusted according to the size of the construction site, dust concentration and working height, and the listed values ​​are reference ranges for normal working conditions.

[0059] Example 2:

[0060] like Figure 4 As shown, compared to Embodiment 1, this embodiment further includes a winding section, which includes a base 11 and a rotating shaft 12 rotatably connected to the base 11. The base 11 is made of metal or high-strength plastic and has mounting holes. It can be fixed to a fixed foundation (such as the ground or construction platform) by anchor bolts, or it can be pressed and fixed by counterweights to keep the base 11 stable and not move during use.

[0061] The rotating shaft 12 is horizontally positioned, with its two ends rotatably connected to the base 11 via bearing seats 13, allowing the rotating shaft 12 to rotate freely around its own axis. The second end of the tethering rope 10 is wound around the rotating shaft 12 and located between the two bearing seats 13, which restrict the tethering rope 10 from moving axially along the rotating shaft 12.

[0062] In use, the tether rope 10 is wound around the rotating shaft 12 in several loops. When the buoyancy section 1 rises, the tether rope 10 is pulled upwards, causing the rotating shaft 12 to rotate. During rotation, the rotating shaft 12 gradually releases the tether rope 10, allowing its length to freely increase as the buoyancy section rises without external drive. Operators can also control the rotation of the rotating shaft 12 to adjust the length and tension of the tether rope 10. When the buoyancy section 1 descends, the tension of the tether rope 10 decreases, and the rotating shaft 12 can be rotated in the opposite direction under operator control, gradually retracting the excess tether rope 10 back onto the rotating shaft 12. The maximum release length of the tether rope 10 is limited by the initial loop length on the rotating shaft 12. Once the loop is fully released, the tether rope 10 is straightened, thus limiting the continued ascent of the buoyancy section 1.

[0063] This embodiment allows for convenient release, take-up, and storage of the tethering rope 10.

[0064] It should be understood that the specific model selection of the ducted fans, the flight control parameter settings, the selection of the spray head 5, and the connection methods between the components in the above two embodiments are all solutions that can be implemented by those skilled in the art based on conventional technical knowledge. The core inventive point of this invention lies in the overall structure of connecting multiple ducted fans into a whole structure via the bracket 2 and suspending the spray unit, and the dust suppression method of limiting the floating range by the tether rope 10 and combining it with ground water supply. The selection and connection methods of each specific component can be achieved using various conventional means known in the art. The number of tether ropes, the specific connection positions, and the fixing points on the bracket can be flexibly adjusted by those skilled in the art according to the actual floating stability requirements and construction environment. The figures shown are only a schematic example and do not constitute a limitation on the scope of protection of this invention.

[0065] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A tethered floating dust suppression system, comprising a dust suppression device, characterized in that, The dust suppression device includes a tethering rope, a spraying section, and multiple floating sections. The multiple floating sections are connected by a support frame. The spraying section is connected to the support frame via a first connector. The spraying section is connected to a water supply device via a water supply pipe. The first end of the tethering rope is connected to the support frame, and the second end is connected to a fixed foundation.

2. The tethered floating dust suppression system according to claim 1, characterized in that, The multiple floating parts are evenly distributed along the circumference.

3. The tethered floating dust suppression system according to claim 2, characterized in that, The number of the first connectors is multiple and they are evenly distributed along the circumference.

4. The tethered floating dust suppression system according to claim 3, characterized in that, The lengths of the multiple first connectors are equal.

5. The tethered floating dust suppression system according to any one of claims 1-4, characterized in that, The spraying unit includes a spraying body, which is connected between the first connector and the water supply pipe, and the spraying body is provided with multiple spray heads along the circumference.

6. The tethered floating dust suppression system according to any one of claims 1-4, characterized in that, It also includes a winding section, which includes a base fixed to the fixed foundation and a rotating shaft rotatably connected to the base, and the tethering rope is wound around the rotating shaft.

7. A dust suppression method, utilizing the tethered floating dust suppression system according to any one of claims 1-6, characterized in that, Includes the following steps: Multiple dust suppression devices are spaced apart in a predetermined area; Each of the aforementioned floating units is activated to suspend the spraying unit at a predetermined height, and water is sprayed from the spraying unit through the water supply equipment to form a dust suppression barrier.

Images