Double-air-curtain protection device and method
By forming a double dustproof air curtain on the optical monitoring equipment through the double air curtain protection device, the impact of dust on the equipment in the mining environment is solved, achieving efficient dust prevention and low-cost maintenance, and adapting to changes in the external environment.
Patent Information
- Application Number
- CN202511155371.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-18
- Publication Date
- 2025-12-12
AI Technical Summary
Existing optical monitoring equipment is susceptible to dust, moisture, and mechanical vibration in mining environments, leading to a decrease in monitoring accuracy. Traditional maintenance methods are inefficient and costly, and existing dust prevention technologies have flaws, such as airflow generators blowing air out of direction or forming vortices that cause dust to adhere.
The device employs a dual air curtain protection system, which includes a protective cover, an airflow channel, an airflow generator, and a flow guide assembly. The airflow filtered by the filter forms a dual dustproof air curtain under the action of the flow guide assembly, preventing the airflow from directly acting on the surface of the optical monitoring equipment. The function of dust isolation and dust removal can be switched by adjusting the angle of the flow guide plate.
It effectively prevents dust from adhering, keeps optical monitoring equipment clean, improves monitoring accuracy, reduces maintenance costs, has a reasonable structure, adapts to changes in the external environment, and achieves a highly efficient dustproof effect.
Smart Images
Figure CN121111343A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of dustproof equipment and method, and particularly relates to a double-air-curtain protection device and method. BACKGROUND
[0002] In the development process of intelligent mines, environment perception and equipment state monitoring technology plays a crucial role. However, the working conditions of mine operation sites are complex, especially the high-concentration dust, humid mist and mechanical vibration generated in the process of underground mining, blasting and material transportation, which pose a serious challenge to the stable operation of optical and electromagnetic sensors. Optical monitoring equipment (such as visual camera, millimeter wave radar and laser radar, etc.) is exposed to harsh environments for a long time, and its optical window and signal transceiver end are easily affected by dust adhesion, fogging and mechanical shielding, which leads to a decrease in monitoring accuracy, and even causes false alarms or missed detection, seriously restricting the safe operation of intelligent mines.
[0003] The mine optical monitoring equipment is often fixed at a high place to cover a larger monitoring range, and the maintenance of the mine optical monitoring equipment mainly depends on regular cleaning by artificial. Due to the high-risk working environment, the wide distribution of equipment and the complex installation location, the traditional maintenance method is not only low in efficiency, but also difficult to meet the requirement of real-time cleaning, which not only has high operation and maintenance cost, but also may further aggravate the degradation of equipment performance due to untimely cleaning or improper operation. In view of this problem, the industry has proposed various technical solutions for dust removal and dust prevention of optical monitoring equipment, such as using dustproof sealing structure to prevent dust from adhering to the optical monitoring equipment, using mechanical scraping equipment to clean the surface of the monitoring equipment, using a flushing mechanism to emit water flow to flush the surface of the optical monitoring equipment, and using an air flow generator to blow the surface of the optical monitoring equipment. However, these technical solutions have different degrees of flaws: The dustproof sealing structure will also be contaminated with dust during long-term use, resulting in a decrease in light transmittance, and may introduce additional optical distortion, giving false monitoring signals; The way of cleaning the surface of the monitoring equipment by mechanical scraping equipment has high failure rate and maintenance cost in the later period due to the wear of the connection of the moving parts during long-term operation, and after wear, the monitoring equipment surface may not be scraped or the equipment surface may be scraped too hard, resulting in wear of the monitoring equipment; The way of flushing the optical monitoring equipment with water flow emitted by the flushing mechanism is easy to mix with dust on the surface of the optical monitoring equipment to form mud, which is more difficult to clean, and the surface of the optical monitoring equipment is more likely to be contaminated with dust after flushing; If the air flow generator needs to work continuously to achieve good dustproof effect, Figure 1 and Figure 2As shown, under the action of the wind blowing to the protection object area in the environment, the blowing air flow will greatly deviate from the set direction, and even the dust will be directly acted on the surface of the optical monitoring device, causing the dust to adhere to the surface of the optical monitoring device, and it is easy to form an air flow vortex between the blowing air flow and the optical monitoring device, the dust is not easy to escape from the vortex, causing the dust in the area to continuously gather and rub the surface of the optical monitoring device, causing the surface of the monitoring device to be easy to wear and thus affect the monitoring effect. SUMMARY
[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a double air curtain protection device with simple structure, good reliability and advantage of avoiding the blowing air flow directly acting on the surface of the optical monitoring device.
[0005] To solve the above technical problems, the present application adopts the following technical scheme: A double air curtain protection device, comprising a protection cover, wherein a natural air suction port, an air flow channel, an air flow generator and a mounting assembly for mounting a protection object are arranged on the protection cover, the air flow generator is arranged in the air flow channel, a filter is arranged at the air inlet end of the air flow channel, a flow guide assembly is arranged at the air outlet end of the air flow channel to form air flow outlets on both sides of the protection object, a gap is formed between the flow guide assembly and the protection object to form natural air outlets on both sides of the protection object, and the natural air outlets are located between the air flow outlets and the protection object.
[0006] As a further improvement of the above technical scheme: The flow guide assembly comprises an arc-shaped flow guide plate.
[0007] The flow guide assembly comprises a support, flow guide plates arranged on both sides of the support in opposition and an adjusting member for adjusting the included angle between the flow guide plates on both sides, and the flow guide plates are movably connected with the support.
[0008] The flow guide plate is hinged to the support, an adjusting portion arranged obliquely downward is arranged on the flow guide plate, and the adjusting member is a rotatable oval plate and abuts against the adjusting portion.
[0009] The air flow channel comprises a cylinder and a flow guide cover arranged at the lower end of the cylinder, the air flow generator is arranged in the cylinder, the flow guide cover comprises a flow guide portion and a sealing portion, the flow guide portion is arranged on both sides of the flow guide assembly, the air flow outlet is arranged between the flow guide portion and the flow guide assembly, the sealing portion is arranged at both ends of the flow guide assembly, the flow guide portion and the sealing portion form a cavity, and the flow guide assembly is arranged in the cavity.
[0010] The air flow channel further comprises air inlet channels arranged oppositely on two sides of the cylinder body, the filter is arranged at an air inlet end of the air inlet channel, and an air outlet end of the air inlet channel is connected with the upper end of the cylinder body.
[0011] The protective cover comprises an outer protective layer and a first inner protective layer arranged inside the outer protective layer, the air inlet channel is arranged between the outer protective layer and the first inner protective layer, the cylinder body is located inside the first inner protective layer, and the air flow generator is connected with the upper part of the outer protective layer through the connecting piece.
[0012] The first inner protective layer further comprises a second inner protective layer, the upper end of the cylinder body is provided with a first radial flange, the upper parts of the first inner protective layer and the second inner protective layer are connected with the first radial flange, and the lower end of the cylinder body is provided with a second radial flange connected with the second inner protective layer.
[0013] The air flow generator is a fan, and the mounting assembly comprises a pair of hoops, and the flow guide assembly is located between the pair of hoops.
[0014] A protection method of the double air curtain protective device, comprising the following steps: S1, starting the double air curtain protective device, judging whether the shutdown time of the double air curtain protective device is greater than a preset time threshold value, if yes, executing step S6, otherwise executing step S2; S2, starting the dust isolation mode, the air flow generated by the air flow generator flows out from the air flow outlet, and the dust isolation air curtains are formed on both sides of the protected object; S3, judging whether the environmental wind speed is greater than a preset wind speed value, if yes, executing step S4, otherwise executing step S5; S4, the adjusting piece increases the included angle between the flow guide plates on both sides; S5, judging whether the environmental dust concentration is greater than a preset concentration value, if yes, executing step S6, otherwise executing step S2; S6, starting the dust removal mode, and the adjusting piece periodically changes the included angle between the flow guide plates on both sides; S7, judging whether the dust removal time is greater than a preset working time, if yes, executing step S8, otherwise executing step S6; S8, judging whether the double air curtain protective device needs to be shut down, if yes, ending, otherwise executing step S2.
[0015] Compared with the prior art, the double air curtain protective device has the following advantages: The double-air-curtain protection device disclosed by the application works as follows: the protected object is installed on the installation assembly, the air flow generator is started, the air in the environment is filtered by the filter and then enters the air flow channel, and when reaching the air outlet end of the air flow channel, the air is sprayed downward from the two air outlets under the action of the air guide assembly, so that the double-dust-prevention air curtains are formed on both sides of the protected object, and the dust in the environment is prevented from adhering to the surface of the protected object. The air in the environment can also enter the gap between the air guide assembly and the protected object through the natural air inlet, and then flow out from the natural air outlets on both sides. Since the air outlets are located outside the natural air outlets, on the one hand, the distance between the air flow sprayed from the air outlets and the protected object is increased, and under the action of the wind blowing on the protected object, the wind does not deviate from the set direction and does not directly act on the surface of the protected object with dust, and on the other hand, the natural air outlets avoid the formation of negative pressure between the dust-prevention air curtain and the protected object, and the air flow vortex is formed in the area between the air outlets and the protected object, so that the structure is reasonable and effective.
[0016] The protection method of the double-air-curtain protection device disclosed by the application can adjust the included angle between the air guide plates on both sides through the adjusting piece when dust needs to be prevented, so that dust prevention is realized according to the external wind force (the greater the external wind force, the greater the included angle between the air guide plates on both sides), and when dust needs to be removed from the protected object, the included angle between the air guide plates on both sides is periodically changed to change the inclination angle of the dust-prevention air flow (for example, the air flow blows in the direction of the protected object), so that the conversion of the dust prevention and removal functions can also be realized.
[0017] Other features and advantages of the application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a simulation diagram of the downward air flow deviating under the action of the wind blowing on the protected object.
[0019] Figure 2 is a simulation diagram of the air flow vortex formed between the downward air flow and the protected object.
[0020] Figure 3 is a three-dimensional structure diagram of the double-air-curtain protection device of the application. Figure 4 is a cross-sectional structure diagram of the double-air-curtain protection device of the application.
[0021] Figure 5 is a front view structure diagram of the application after the protective cover is hidden.
[0022] Figure 6 is a front view structure diagram of the application after the protective cover is hidden.
[0023] Figure 7is a front view structural schematic diagram of the second embodiment of the flow guide assembly in the present application.
[0024] Figure 8 is a side view structural schematic diagram of the second embodiment of the flow guide assembly in the present application.
[0025] Figure 9 in (a) is a schematic diagram of the air flow field provided with the flow guide assembly in the present application, and (b) is a schematic diagram of the air flow field without the flow guide assembly.
[0026] Figure 10 in (a) is a schematic diagram of the air flow field provided with the natural air inlet in the present application, and (b) is a schematic diagram of the air flow field without the natural air inlet.
[0027] Figure 11 is a simulation schematic diagram of the working state of the present application, wherein the right half is an enlarged view of the boxed area of the left half.
[0028] Figure 12 is a simulation schematic diagram of the working state of the present application without the natural air inlet, wherein the right half is an enlarged view of the boxed area of the left half.
[0029] Figure 13 is a flow schematic diagram of the protection method of the double air curtain protection device in the present application.
[0030] In the figure, various reference signs represent: a, downward air flow; b, protection object area; c, air flow vortex; 1, protection cover; 11, outer protection layer; 12, first inner protection layer; 13, second inner protection layer; 14, natural air inlet; 15, natural air outlet; 2, air flow channel; 21, air flow outlet; 22, cylinder body; 221, first radial flange; 222, second radial flange; 23, air inlet channel; 24, flow guide cover; 241, flow guide part; 242, sealing part; 3, air flow generator; 31, connecting piece; 4, mounting assembly; 5, filter; 6, flow guide assembly; 61, support; 62, flow guide plate; 621, adjusting part; 63, adjusting piece; 7, protection object. DETAILED DESCRIPTION
[0031] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0033] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0035] Example 1 like Figure 3 and Figure 6 As shown, the dual-air curtain protective device of this embodiment includes a protective cover 1. The protective cover 1 is provided with a natural air intake 14, an airflow channel 2, an airflow generator 3, and a mounting assembly 4 for mounting the protected object 7. The airflow generator 3 is located inside the airflow channel 2. The air inlet end of the airflow channel 2 is provided with a filter 5, and the outlet end is provided with a flow guide assembly 6 to form airflow outlets 21 on both sides of the protected object 7. There is a gap between the flow guide assembly 6 and the protected object 7 to form natural air outlets 15 on both sides of the protected object 7. The natural air outlets 15 are located between the airflow outlets 21 and the protected object 7 (i.e., the natural air outlets 15 are located inside the airflow outlets 21). The protected object is, for example, a lidar, a millimeter-wave radar, etc., and the airflow generator 3 can be, for example, various types of fans, preferably axial flow fans.
[0036] In this embodiment of the dual-air curtain protective device, when the protected object 7 is installed on the mounting assembly 4, the airflow generator 3 is activated, causing the ambient air to enter the airflow channel 2 after being filtered by the filter 5. When the air reaches the outlet end of the airflow channel 2, under the action of the flow guiding assembly 6, it is sprayed downward from two airflow outlets 21 that are distributed in a figure-eight shape in the vertical plane (the airflow path is as follows). Figure 4 (As shown by the arrow in the image), thus forming a double dustproof air curtain on both sides of the protected object 7, preventing dust and other environmental particles from adhering to the surface of the protected object 7 (see details). Figure 9Guided by the flow guide component 6, the airflow generated by the airflow generator 3 can flow downwards. Without the flow guide component 6, it would be difficult to control both low and high airflow volumes generated by the airflow generator 3, making it difficult to form a dust-proof airflow; instead, the airflow would flow along the curved surface of the protected object. Air from the environment can also enter the area between the flow guide component 6 and the protected object 7 through the natural air intake 14, and then flow out from the natural air outlets 15 on both sides (see details). Figure 10 If the natural air intake 14 is not installed, the dust-proof airflow exits from near the curved surface of the lidar. Due to the viscosity of the gas flow, the airflow tends to flow along the curved surface of the lidar, thus compressing the dust-proof buffer space between the airflow and the lidar, resulting in a weakened dust-proof effect. With the natural air intake 14 installed, the negative pressure generated in areas with high flow velocity is eliminated. After exiting from the air outlet 21, the dust-proof airflow maintains a vertical downward movement, preventing external dust from adhering to it. See details... Figure 11 In the elliptical area on the right, natural air entering through the natural air intake 14 can flow out through the natural air outlet 15. Since the air outlet 21 is located outside the natural air outlet 15, it increases the distance between the airflow from the air outlet 21 and the protected object 7. This prevents the airflow from deviating significantly from its intended direction and carrying dust directly onto the surface of the protected object 7 under the influence of wind blowing towards it. Furthermore, the natural air outlet 15 also prevents negative pressure from forming between the dust curtain and the protected object 7, thus avoiding the formation of an airflow vortex in the area between the airflow from the air outlet 21 and the protected object 7 (see details...). Figure 12 The right half of the elliptical area, when the natural air intake 14 is not set, the natural wind in the external environment will enter the area between the air guide component 6 and the protected object 7 through the natural air outlet 15, which is reasonable and effective.
[0037] See details Figure 4 and Figure 6 In this embodiment, the flow guiding component 6 includes an arc-shaped flow guide plate. The arc-shaped flow guide plate can reduce gas flow resistance and better guide the airflow out of the airflow outlet 21.
[0038] Furthermore, in this embodiment, the airflow channel 2 includes a cylindrical body 22 and a flow guide hood 24 disposed at the lower end of the cylindrical body 22. The airflow generator 3 is disposed inside the cylindrical body 22. The flow guide hood 24 includes a flow guide portion 241 and a sealing portion 242. The flow guide portion 241 is disposed on both sides of the flow guide assembly 6, the airflow outlet 21 is disposed between the flow guide portion 241 and the flow guide assembly 6, and the sealing portion 242 is disposed at both ends of the flow guide assembly 6. The flow guide portion 241 and the sealing portion 242 together form a cavity, and the flow guide assembly 6 is disposed inside the cavity. The airflow generated by the airflow generator 3 flows downward along the cylindrical body 22 into the flow guide hood 24, then flows to the left and right sides along the arc surface of the flow guide assembly 6, and then flows out through the airflow outlet 21 between the flow guide portion 241 and the flow guide assembly 6, thereby forming a double dustproof air curtain on the left and right sides of the protected object 7.
[0039] Furthermore, in this embodiment, the airflow channel 2 also includes an air inlet channel 23 arranged opposite to each other on both sides of the cylinder 22. The filter 5 is located at the air inlet end of the air inlet channel 23, and the air outlet end of the air inlet channel 23 is connected to the upper end of the cylinder 22. During operation, the airflow generator 3 is activated, causing the air in the environment to enter the airflow channel 2 after being filtered by the filters 5 on both sides of the protective cover 1. Then, the air flows upward and towards the center into the upper end of the cylinder 22, and then flows downward. Finally, when it reaches the lower end of the cylinder 22, it is sprayed downward from two inverted U-shaped airflow outlets 21 under the action of the flow guiding component 6. The structure has good symmetry and can form a uniform protective air curtain on both sides of the protected object 7.
[0040] Furthermore, in this embodiment, the protective cover 1 includes an outer protective layer 11 and a first inner protective layer 12 disposed inside the outer protective layer 11. The air intake channel 23 is located between the outer protective layer 11 and the first inner protective layer 12. The cylinder 22 is located inside the first inner protective layer 12. The airflow generator 3 is connected to the upper part of the outer protective layer 11 through a connector 31 (e.g., a connecting shaft, a hanging rod, etc.). The cylinder 22 can make full use of the space inside the first inner protective layer 12, and the airflow generator 3 can make full use of the space inside the cylinder 22, making the entire double air curtain protective device reasonably laid out, compact in structure, and occupying little space.
[0041] Furthermore, in this embodiment, a second inner protective layer 13 is also provided inside the first inner protective layer 12. A first radial flange 221 is provided at the upper end of the cylinder 22. The upper parts of the first inner protective layer 12 and the second inner protective layer 13 are connected to the first radial flange 221. A second radial flange 222 is provided at the lower end of the cylinder 22, and the second radial flange 222 is connected to the second inner protective layer 13. The cylinder 22 strengthens the connection with the protective cover 1 through the first radial flange 221 and the second radial flange 222, which helps to improve the stability of the equipment during operation.
[0042] In a preferred embodiment, the mounting assembly 4 includes a pair of clamps that can secure both ends of the protected object 7 within the clamps, achieving reliable installation and facilitating easy assembly and disassembly. The flow guiding assembly 6 is located between the pair of clamps, thereby providing protection for the main body of the protected object 7 in the middle. Furthermore, a flexible buffer layer (such as a silicone layer, rubber layer, etc.) can be provided on the inner wall of the clamps to prevent damage to the protected object 7 due to compression.
[0043] Example 2 Figure 7 and Figure 8 This invention illustrates another embodiment of the double air curtain protective device. This embodiment is essentially the same as the first embodiment, except that: In this embodiment, the flow guiding assembly 6 includes a support 61, flow guiding plates 62 arranged opposite to each other on both sides of the support 61, and an adjusting member 63 for adjusting the included angle between the two flow guiding plates 62. The flow guiding plates 62 are movably connected to the support 61. The support 61 can be connected and fixed to the cylinder 22 or the flow guiding cover 24.
[0044] When the wind force blowing towards the protected object 7 increases (for example, by setting up a wind sensor for monitoring), the angle between the guide vanes 62 on the left and right sides can be adjusted to further deflect the airflow to both sides, preventing the airflow from being directly affected by the natural wind in the environment and acting on the surface of the protected object 7, thus achieving a dustproof effect that adapts to external wind conditions. After the equipment has been running for a period of time, when a lot of dust adheres to the protected object 7, the position of the airflow can also be changed periodically to use clean airflow to thoroughly blow away the dust from the protected object 7.
[0045] Furthermore, in this embodiment, the guide plate 62 is hinged to the support 61, and the guide plate 62 is provided with an adjustment part 621 arranged obliquely downward. The adjustment member 63 is a rotatable elliptical plate and abuts against the adjustment part 621.
[0046] When the elliptical plate rotates, it pushes the adjusting parts 621 on both sides, which in turn causes the guide plates 62 on both sides to rotate up and down around the hinge point with the support 61, thereby adjusting the included angle between the guide plates 62 on both sides. The structure is simple and the adjustment is convenient. The adjusting component 63 can be driven to rotate by a motor or the like, which will not be described in detail.
[0047] In a preferred embodiment, the deflector 62 is also an arc-shaped plate. Compared to a flat plate, the arc-shaped plate can reduce gas flow resistance and better guide the airflow out of the air outlet 21.
[0048] Example 3 like Figure 13 As shown, the protection method of the above-mentioned double air curtain protection device includes the following steps: S1. Start the double air curtain protection device and determine whether the shutdown time of the double air curtain protection device is greater than the preset time threshold. If yes, proceed to step S6; otherwise, proceed to step S2. S2. Start the dustproof mode. The airflow generated by the airflow generator 3 flows out from the airflow outlet 21 and forms a dustproof air curtain on both sides of the protected object 7. S3. Determine whether the ambient wind speed is greater than the preset wind speed value. If yes, proceed to step S4; otherwise, proceed to step S5. S4, Adjustment component 63 increases the included angle between the two guide vanes 62; S5. Determine whether the ambient dust concentration is greater than the preset concentration value. If yes, proceed to step S6; otherwise, proceed to step S2. S6. Start the dust removal mode. Adjust the component 63 to make the included angle between the guide plates 62 on both sides change periodically. S7. Determine whether the dust removal time is greater than the preset working time. If yes, proceed to step S8; otherwise, proceed to step S6. S8. Determine whether the double air curtain protection device needs to be shut down. If yes, end; otherwise, proceed to step S2.
[0049] The protection method of the double air curtain protection device in this embodiment can achieve adaptive dust prevention according to the external wind conditions when it is necessary to isolate the protected object 7 from dust. When it is necessary to remove dust from the protected object 7, the included angle between the two guide plates 62 is increased so that the airflow is deflected away from the protected object 7. When it is necessary to remove dust from the protected object 7, the included angle between the two guide plates 62 changes periodically so that the airflow covers the entire surface of the protected object 7 as much as possible. This can also achieve the conversion between dust isolation and dust removal functions.
[0050] The dust-proof function in this embodiment refers to using vertically downward or outward airflow to prevent dust from adhering to the mirror surface of the protected object 7 (specifically, the mirror surface of the lidar), thus isolating the protected object 7 from dust-laden airflow in the environment. The vertically downward and outward airflows can respectively cope with different wind directions and forces in the external environment, ensuring effective dust isolation and reducing the difficulty of subsequent dust removal work. The dust removal function refers to using airflow directed in a vector direction towards the lidar mirror surface to remove dust adhering to it.
[0051] It should be noted that during the dust removal process, a continuously changing airflow direction will be used to peel off dust from the lidar mirror surface from the center outwards and from top to bottom, gradually sweeping it from top to bottom. Through multiple even sweeps, the dust removal function is achieved. By continuously adjusting the airflow direction, the system periodically transitions from the dust isolation mode to the dust removal mode. The two functions complement each other: dust isolation reduces the difficulty of dust removal, while blowing away dust improves the thoroughness of dust isolation.
[0052] The specific protection method of the double air curtain protection device in this embodiment is as follows: ①When powered on, the default dustproof mode is activated, and the air shower direction is vertically downward.
[0053] ② An environmental wind sensor measures the ambient wind speed and dynamically adjusts the air shower angle based on the real-time wind parameters. This angle is the angle between the left and right guide plates 62, and it is positively correlated with the ambient wind speed (the basic principle is that the ambient wind speed V1 is decomposed into a horizontal component V1x and a vertical component V1y; similarly, the dust-proof wind speed V2 is decomposed into a horizontal component V2x and a vertical component V2y. The magnitude of V1x can be obtained through the wind speed sensor arranged next to the double air curtain protection device. Ensuring that V2x≈V1x ensures that the ambient wind carrying sand and dust will not impact the surface of the protected object 7 over a large area, thus achieving dust isolation and protection). That is, the greater the ambient wind speed, the larger the angle.
[0054] ③ An ambient dust concentration sensor switches to dust removal mode based on the ambient wind speed, dust concentration, and dust isolation duration. For example, if the ambient wind speed is high and the dust concentration is high, the dust isolation time will be short, and the system will automatically enter dust removal mode.
[0055] ④ Activate the dust removal mode. Unlike the dust isolation mode, in the dust removal mode, the air shower blows dust from the center outwards to the left and right sides, gradually removing dust from the radar surface. This process is repeated multiple times to achieve the dust removal effect. In the dust removal mode, the angle between the guide vanes 62 on the left and right sides changes.
[0056] This embodiment utilizes multi-parameter linkage control to ensure the air shower angle adapts to ambient wind force and enables precise triggering of mode switching through real-time dust concentration feedback, thereby improving the automation and precision of surface cleanliness control for the protected object 7. When the equipment starts up, the dust removal mode can be executed first, followed by the aforementioned continuous switching, achieving comprehensive protection of the radar surface.
[0057] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.
Claims
1. A double-air curtain protective device, characterized in that: The device includes a protective cover (1), which is provided with a natural air intake (14), an airflow channel (2), an airflow generator (3), and an installation assembly (4) for installing a protective object (7). The airflow generator (3) is located inside the airflow channel (2). The air inlet end of the airflow channel (2) is provided with a filter (5). The outlet end of the airflow channel (2) is provided with a guide assembly (6) to form airflow outlets (21) on both sides of the protective object (7). There is a gap between the guide assembly (6) and the protective object (7) to form natural air outlets (15) on both sides of the protective object (7). The natural air outlets (15) are located between the airflow outlets (21) and the protective object (7).
2. The double air curtain protective device according to claim 1, characterized in that: The flow guiding component (6) includes an arc-shaped flow guiding plate.
3. The double air curtain protective device according to claim 1, characterized in that: The flow guiding assembly (6) includes a support (61), flow guiding plates (62) arranged opposite to each other on both sides of the support (61), and an adjusting member (63) for adjusting the angle between the flow guiding plates (62) on both sides. The flow guiding plates (62) are movably connected to the support (61).
4. The double air curtain protective device according to claim 3, characterized in that: The guide plate (62) is hinged to the support (61). The guide plate (62) is provided with an adjustment part (621) arranged obliquely downward. The adjustment part (63) is a rotatable elliptical plate and abuts against the adjustment part (621).
5. The double air curtain protective device according to any one of claims 1 to 4, characterized in that: The airflow channel (2) includes a cylinder (22) and a flow guide hood (24) located at the lower end of the cylinder (22). The airflow generator (3) is located inside the cylinder (22). The flow guide hood (24) includes a flow guide (241) and a sealing part (242). The flow guide (241) is located on both sides of the flow guide assembly (6). The airflow outlet (21) is located between the flow guide (241) and the flow guide assembly (6). The sealing part (242) is located at both ends of the flow guide assembly (6). The flow guide (241) and the sealing part (242) together form a cavity. The flow guide assembly (6) is located inside the cavity.
6. The double air curtain protective device according to claim 5, characterized in that: The airflow channel (2) also includes an air inlet channel (23) arranged opposite to each other on both sides of the cylinder (22). The filter (5) is located at the air inlet end of the air inlet channel (23), and the air outlet end of the air inlet channel (23) is connected to the upper end of the cylinder (22).
7. The double air curtain protective device according to claim 6, characterized in that: The protective cover (1) includes an outer protective layer (11) and a first inner protective layer (12) disposed inside the outer protective layer (11). The air intake channel (23) is disposed between the outer protective layer (11) and the first inner protective layer (12). The cylinder (22) is located inside the first inner protective layer (12). The airflow generator (3) is connected to the upper part of the outer protective layer (11) through a connector (31).
8. The double air curtain protective device according to claim 7, characterized in that: The inner side of the first inner protective layer (12) is also provided with a second inner protective layer (13). The upper end of the cylinder (22) is provided with a first radial flange (221). The upper parts of the first inner protective layer (12) and the second inner protective layer (13) are connected to the first radial flange (221). The lower end of the cylinder (22) is provided with a second radial flange (222). The second radial flange (222) is connected to the second inner protective layer (13).
9. The double air curtain protective device according to any one of claims 1 to 4, characterized in that: The airflow generator (3) is a fan, the mounting assembly (4) includes a pair of clamps, and the flow guiding assembly (6) is located between the pair of clamps.
10. A protection method for a double air curtain protective device according to any one of claims 1 to 9, characterized in that: Includes the following steps: S1. Start the double air curtain protection device and determine whether the shutdown time of the double air curtain protection device is greater than the preset time threshold. If yes, proceed to step S6; otherwise, proceed to step S2. S2. Start the dustproof mode. The airflow generated by the airflow generator (3) flows out from the airflow outlet (21) and forms a dustproof air curtain on both sides of the protected object (7). S3. Determine whether the ambient wind speed is greater than the preset wind speed value. If yes, proceed to step S4; otherwise, proceed to step S5. S4, Adjustment component (63) increases the included angle between the guide vanes (62) on both sides; S5. Determine whether the ambient dust concentration is greater than the preset concentration value. If yes, proceed to step S6; otherwise, proceed to step S2. S6. Start the dust removal mode and adjust the component (63) to make the included angle between the guide plates (62) on both sides change periodically; S7. Determine whether the dust removal time is greater than the preset working time. If yes, proceed to step S8; otherwise, proceed to step S6. S8. Determine whether the double air curtain protection device needs to be shut down. If yes, end; otherwise, proceed to step S2.