Rain cover of fan junction box and operation method of rain cover

Abstract

The invention discloses a fan technology, and aims to provide a fan junction box rain cover and an operation method thereof, the fan junction box rain cover comprises a fixed seat welded on the peripheral side of a fan and used for fixedly installing a fan junction box and the fan junction box rain cover; the fan junction box rain cover is fixedly arranged on the fixed seat and is used for protecting the fan so as to ensure that the fan junction box has waterproof and dustproof effects; the fixing bolts are used for fixing the fan junction box and the fan junction box rain cover on the fixing seat; the fan junction box joint is arranged on the fan junction box and is used for connecting a field power line to control the fan to work; the fan junction box rain cover is further provided with an adjustable air bag system used for enhancing the wind-proof and rain-proof effects of the fan junction box rain cover. The invention is suitable for the technical field of fans.

Description

Technical Field

[0001] The present invention relates to a fan technology, and more specifically, to a rain cover for a fan junction box and an operating method thereof. Background Art

[0002] There are basically two structural forms of fan junction boxes for existing power systems and coolers: 1. Conventional fan junction box: It consists of a junction box body and a junction box cover, and is mostly formed by a casting process. It is thick and heavy, relatively rough and unsightly. The middle part of the bottom of the junction box body is a hollow structure. When assembling and using it, it is necessary to add a rubber pad to the bottom of the junction box body and the contact part with the product to play a sealing role. However, the rubber pad will age during use and rainwater will enter the fan junction box, causing the motor to burn out. In addition, when the lead-out power cord of the motor itself is connected to the internal wiring terminal of the fan junction box, it needs to pass through the outlet hole on the wind tube and then through the rubber pad, and finally pass into the fan junction box. These positions are not fully sealed, and there is a risk of rainwater entering the fan junction box, causing the motor to burn out.

[0003] 2. Sealed fan junction box: It adopts assembly and fixing method, with new structure, the bottom of the junction box is fully sealed, and no rubber pad is required for the contact part between the bottom of the junction box and the product. The lead-out power line of the motor itself is connected to the internal terminal of the fan junction box through the fan junction box connector, which can effectively avoid the risk of rainwater entering the fan junction box. The junction box mounting block is welded on the outer wall of the junction box body and is symmetrically distributed at 180°. The number of mounting bolts of the junction box is reduced by 50%, making assembly more convenient and quicker. In addition, it is more convenient to arrange and connect the power leads on site during product installation and use.

[0004] In practical applications, the fan junction box is basically the first type, and the fan is used outdoors. In severe weather conditions such as wind and rain, there is a certain risk of rainwater entering the fan junction box. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a windproof and rainproof rain cover for a fan junction box and an operating method thereof.

[0006] To achieve the above object, the present invention provides the following technical solution: a rain cover for a fan junction box, comprising: A fixing seat, welded to the outer peripheral side of the fan and used to fix the fan junction box and the fan junction box rain cover; The fan junction box rain cover is fixedly installed on the fixed base to protect the fan to ensure that the fan junction box has waterproof and dustproof effects; Fixing bolts are used to fix the fan junction box and the rainproof cover of the fan junction box to the fixing seat; The fan junction box connector is arranged on the fan junction box and is used to connect to the on-site power supply line to control the operation of the fan; An adjustable airbag system for enhancing the windproof and rainproof effects of the rainproof cover of the fan junction box is further arranged on the rainproof cover of the fan junction box.

[0007] The present invention is further configured such that: the fixing seat is arranged in a U shape, and a plurality of threaded holes for fixedly installing the fan junction box are penetrated and opened on the top surface of the U-shaped fixing seat. A lead hole for the motor lead is also penetrated and opened on the top surface of the U-shaped fixing seat. A double-sided protection coil is fixedly arranged in the lead hole. Three threaded holes for fixedly installing the rainproof cover of the fan junction box and distributed in an isosceles triangle are penetrated and opened on one side surface of the U-shaped fixing seat.

[0008] The present invention is further configured such that: the rainproof cover of the fan junction box has a semi-closed structure. The rainproof cover of the fan junction box is integrally formed by a baffle plate, a connecting plate, two side plates, a small plate, and a mounting plate, such that the baffle plate and the connecting plate are vertically arranged. The two side plates are symmetrically arranged and are both connected to the baffle plate and the connecting plate. The small plate is arranged parallel to the baffle plate and is connected to the connecting plate and the two side plates. The mounting plate is arranged parallel to the connecting plate and is connected to the small plate and the two side plates. Three mounting holes corresponding to the three threaded holes on the side surface of the U-shaped fixing seat are penetrated and opened on the mounting plate.

[0009] The present invention is further configured such that: the ratio of the length of the connecting plate to the length of the mounting plate is 1, and the ratio of the length of the baffle plate to the length of the connecting plate is 2.5 - 3.

[0010] An operation method for a rainproof cover of a fan junction box, characterized by comprising the following steps: S1. Material preparation: Select stainless steel sheet or carbon steel sheet as the basic material for the rainproof cover of the fan junction box and manufacture it according to the requirements of the drawing: S11. Processing and manufacturing of the fixing seat: Convert the stainless steel sheet or carbon steel sheet into an unfolded blanking drawing according to the drawing for laser cutting and blanking. The lead hole is also directly processed by laser cutting. Then process the threaded holes for fixedly installing the fan junction box and the three threaded holes on one side surface of the U-shaped fixing seat for fixedly installing the rainproof cover of the fan junction box. Then use a bending device to bend it into shape according to the requirements of the drawing. Finally, install a double-sided protection coil in the lead hole to prevent wire abrasion; S12. Processing and manufacturing of the rain shield for the fan junction box: Convert the stainless steel sheet material into an unfolded cutting diagram according to the drawing for laser cutting. Among them, three mounting holes corresponding to the three threaded holes on the side of the U-shaped fixing seat are also directly processed by laser cutting. Then, use a bending device to bend the raw material of the rain shield for the fan junction box according to the drawing requirements to ensure that the positions, dimensions, and angles of the baffle, connecting plate, two side plates, small plate, and mounting plate after bending are consistent with the drawing and form a semi-closed structure. Then, weld the gaps between the connecting plate, two side plates, and small plate; S2. Installation of the rain shield for the fan junction box: S21. Open a wire hole at the position on the fan where the fan junction box needs to be installed, and then install a double-sided protective coil at the wire outlet to ensure that the power cord attached to the motor can pass through smoothly and prevent wear; S22. Weld the U-shaped fixing seat to the fan so that the bottoms of the two side faces of the U-shaped fixing seat are in contact with the fan housing, so that the side face with three threaded holes faces upward. Then, install the fan junction box on the top surface of the U-shaped fixing seat through fixing bolts. Then, lead out the power cord through the wire outlet and then through the lead hole and connect it to the wiring terminal in the fan junction box to ensure that the wiring points are free of looseness and poor contact. Finally, tighten the fan junction box cover; S23. Finally, align the three mounting holes on the mounting plate in the rain shield for the fan junction box with the three threaded holes on the U-shaped fixing seat, and use fixing bolts to fixedly install the rain shield for the fan junction box on the U-shaped fixing seat to ensure that there is no looseness after installation; S3. Maintenance method: S31. Regular inspection: Regularly check whether the rain shield for the fan junction box is loose or damaged to ensure that it can effectively protect the fan junction box for a long time; S32. Cleaning and maintenance: Regularly clean the rain shield for the fan junction box to remove dust, debris, and dirt to avoid affecting the protection performance.

[0011] The present invention is further provided that: the adjustable airbag system includes a monitoring module arranged in the surrounding area of the rain shield for the fan junction box for real-time collection of wind speed and rainfall intensity, a central control module for receiving the data of the monitoring module and making timely analysis and corresponding control, an airbag module arranged in the rain shield for the fan junction box for being controlled by the central control module, and a pressure sensing module arranged in the airbag for real-time monitoring of air pressure changes and transmitting real-time data to the central control module. The airbag module includes an airbag and a pressure valve for adjusting the inflation amount of the airbag according to the control of the central control module. The control method of the adjustable airbag system includes the following steps: S1-1. Real-time monitoring of wind speed and rainfall intensity: The monitoring module collects wind speed and rainfall intensity in real time. Through these data, the central control module can comprehensively judge the current weather conditions and determine whether to enter the adjustment mode, including the increase or decrease of wind speed and the intensity of rainfall, to provide accurate basic data for subsequent adjustment of the airbag inflation volume. The preset wind speed threshold is A, and the preset rainfall threshold is B. The specific judgment is: If the wind speed A1 shows an upward trend for 5 consecutive seconds and A1 ≥ A, the central control module enters the wind speed response mode and starts to adjust the inflation volume of the airbag through the air pressure valve; If the rainfall B1 is monitored to be B1 ≥ B for three consecutive times, the central control module enters the rainfall intensity response mode and starts to adjust the inflation volume of the airbag through the air pressure valve; S1-2. Data transmission to the central control system: The data from the monitoring module will be sent to the central control module via wireless transmission or wired network. The central control module has powerful data processing capabilities, can receive data in real time, and conduct effective integrated analysis. This data flow is the basis for airbag adjustment decisions, ensuring that the system can respond immediately to environmental changes. If data transmission is interrupted or abnormal, the central control module will trigger an alarm and move to the backup communication method; If the data transmission delay exceeds 3 s, the central control module determines that the data is unreliable and relies on historical data to make supplementary decisions; S1-3. Data analysis and judgment: Once the central control module receives various meteorological data, it will conduct a comprehensive analysis and make judgments on the data. The judgment rules include: If the current wind speed A1≥A and B1≥B, the rainfall intensity adjustment is prioritized to prevent rainwater penetration; S1-4, airbags are adjusted according to wind speed: The central control module adjusts the inflation volume of the airbag through the air pressure valve according to the data analysis results. The specific judgment rules include: If the wind speed A1≥A, the central control module controls to increase the airbag inflation volume to 50% of the preset value; If the wind speed continues to increase and reaches wind speed A2, that is, A2>A1, the central control module further controls the airbag to increase the inflation volume until it reaches the maximum preset value; If the wind speed A1 fluctuates by more than 20% within 5 seconds, the wind speed is considered unstable and inflation is temporarily stopped to avoid airbag damage; S1-5, Real-time feedback of airbag inflation process: The process of airbag inflation needs to be continuously monitored. The air pressure sensor module provides real-time feedback on the air pressure changes in the airbag. The central control module adjusts the inflation strategy based on the feedback information. The specific determination method is as follows: If the air pressure sensing module detects that the air pressure reaches 90% of the maximum preset value, it enters the buffer inflation stage; If the air pressure increases too quickly and exceeds the preset pressure increase speed T, it is judged that the inflation is too fast and the inflation speed is slowed down; If the air pressure is lower than 10% of the minimum preset value, the central control module will control the inflation speed to increase; S1-6, airbags are adjusted according to rainfall: In an environment with heavy rainfall, the airbags are adjusted not only to enhance wind resistance, but also to prevent rain from seeping in through the edges. The specific judgment rules include: If the rainfall B1≥B, the central control module controls and adjusts the airbag inflation volume to prevent rainwater from entering; If the rainfall exceeds twice of B within 15 minutes, that is, B1>2B, it is judged as heavy rainfall, and the central control module controls the increase of the airbag inflation volume to the maximum preset value to enhance the waterproof ability; S1-7, inflation volume and stability adjustment of the fan junction box rain cover: The adjustment of the inflation volume is not only to cope with external meteorological changes, but also involves the stability of the cover and the durability of the airbag. Too much or too little inflation will affect the stability of the cover, and may even cause the airbag to rupture or over-expand, resulting in deformation of the appearance of the fan junction box rain cover. Therefore, the central control module monitors the air pressure sensor module to achieve precise inflation volume adjustment to ensure that the airbag can meet the requirements of wind speed and rainfall intensity without excessively affecting the appearance and structure of the fan junction box rain cover. S1-8, air bag deflation: When the wind speed or rainfall reaches the reverse change of the threshold, the deflation mechanism of the airbag is activated. The judgment method is: If the wind speed A1 is less than A and the rainfall B1 is less than B, the environment is determined to be stable, and the central control module automatically controls the air pressure in the airbag to be released until it drops to the minimum preset value; If the air pressure in the airbag exceeds the maximum preset value, the central control module will actively start deflation to reduce the pressure until it is less than or equal to the maximum preset value; If an abnormality occurs during the normal deflation of the airbag, including but not limited to excessively fast deflation or uneven deflation, the central control module will immediately stop deflation and report the fault; S1-9, System Adaptability: The adjustable airbag system also has strong adaptive capabilities; as the use time increases, the airbag will age or wear, resulting in the inflation effect being less than expected. The system can monitor the health status of the airbag in real time and adjust it according to the actual situation of the airbag, including but not limited to automatically increasing the inflation volume or adjusting the inflation speed after the airbag ages, ensuring that even when the airbag performance decreases, it can still provide reliable protection.

[0012] The beneficial effects of the present invention are as follows: 1. Compared with the prior art, the rainproof cover of the fan junction box of the present invention can effectively protect the fan junction box from external factors such as wind, rain, and dust through the reasonable configuration of components such as the fixing seat, the rainproof cover of the fan junction box, and the fixing bolts, ensuring the normal operation of the fan junction box. The design of the rainproof cover of the fan junction box can not only protect the fan junction box from environmental factors, but also ensure the electrical safety of the fan, extend the service life of the fan junction box and the fan. At the same time, the structure is simple, convenient for production and installation, and easy to maintain, with high applicability, capable of providing stable protection for the fan and reducing the failure rate.

[0013] 2. Through the optimization of the design of the fixing seat, the rainproof cover of the fan junction box of the present invention adopts a C-shaped structure and is provided with threaded holes and lead holes, with extremely high structural stability. The design of the threaded holes enables the fan junction box to be more firmly fixed on the C-shaped fixing seat, preventing loosening or deformation caused by external forces; the setting of the lead holes facilitates the introduction of the power cord and effectively prevents wire abrasion through the double-sided protective coil, ensuring the safety and stability of the electrical connection. This structural design not only improves the convenience of assembly but also enhances the protection performance of the fan junction box.

[0014] 3. In the present invention, a semi-closed structure is adopted, which is composed of a baffle, a connecting plate, two side plates, a small plate, and a mounting plate, enabling good protection effects, effectively preventing external substances such as rain and dust from entering the fan junction box, and preventing electrical connectors from short-circuiting or being damaged. This structure has strong stability and can withstand large wind pressures and rain impacts, thereby reducing the risk of the fan junction box being affected by environmental factors. Through precise design, the rainproof cover of the fan junction box not only has high practicality but also good durability and anti-aging ability, and can provide high-quality protection for the fan for a long time.

[0015] 4. The structure of the present invention is simple and reasonable, easy to manufacture, easy to operate, avoids the defects in the prior art, and is suitable for popularization and implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the structural diagram of the present invention.

[0017] Figure 2 is the structural diagram of the fixing seat of the present invention.

[0018] Figure 3 is the structural diagram of the rainproof cover of the fan junction box of the present invention.

[0019] Figure 4 is the structural diagram of the present invention installed on the fan.

[0020] Figure 1-4 Figure numerals: 1. fixing seat; 2. rain cover of fan junction box; 3. fixing bolt; 4. fan junction box connector; 5. lead-in hole; 6. double-sided protective coil; 7. baffle; 8. connecting plate; 9. side panel; 10. small plate; 11. mounting plate. DETAILED DESCRIPTION

[0021] Reference Figure 1-4 The wind turbine junction box rain cover and the operating method thereof are further described in the embodiments of the present invention.

[0022] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0023] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0024] Figures 1 to 4 A wind turbine junction box rain cover is shown, comprising: A fixing seat 1 is welded to the outer peripheral side of the fan and is used to fix and install the fan junction box and the fan junction box rain cover 2; The fan junction box rain cover 2 is fixedly mounted on the fixing base 1 and is used to protect the fan to ensure that the fan junction box has waterproof and dustproof effects; The fixing bolts 3 are used to fix the fan junction box and the fan junction box rain cover 2 on the fixing base 1; The fan junction box connector 4 is arranged on the fan junction box and is used to connect to the on-site power line to control the fan operation; The fan junction box rain cover 2 is also provided with an adjustable air bag system for enhancing the wind and rain protection effect of the fan junction box rain cover 2; Compared with the prior art, the rainproof cover of the fan junction box of the present invention can effectively protect the fan junction box from external factors such as wind, rain, and dust through the reasonable configuration of components such as the fixing seat 1, the rainproof cover 2 of the fan junction box, and the fixing bolts 3, ensuring the normal operation of the fan junction box. The design of the rainproof cover 2 of the fan junction box can not only protect the fan junction box from environmental factors, but also ensure the electrical safety of the fan, extend the service life of the fan junction box and the fan. At the same time, the structure is simple, facilitating production and installation, and the maintenance is convenient, with high applicability, capable of providing a stable protection effect for the fan, reducing the failure rate. In addition, regardless of the installation method, structure, blowing method, etc. of the fan during use, the inlet of the fan junction box is always at the lower part of the fan junction box. After the product is installed on-site, the inlet of the fan junction box faces the ground, which can effectively prevent rainwater or other sundries from entering the joint, playing a good protective role and meeting various occasions and usage requirements.

[0025] The fixing seat 1 is arranged in a U shape, and a plurality of threaded holes for fixedly installing the fan junction box are penetrated and opened on the top surface of the U-shaped fixing seat 1. A lead hole 5 for the motor lead is also penetrated and opened on the top surface of the U-shaped fixing seat 1. A double-sided protection coil 6 is fixedly arranged in the lead hole 5. Three threaded holes for fixedly installing the rainproof cover 2 of the fan junction box and distributed in an isosceles triangle are penetrated and opened on one side surface of the U-shaped fixing seat 1. Through the optimization of the design of the fixing seat 1, adopting a U-shaped structure and setting threaded holes and the lead hole 5, it has extremely high structural stability. The design of the threaded holes enables the fan junction box to be more firmly fixed on the U-shaped fixing seat 1, preventing loosening or deformation caused by external forces. The setting of the lead hole 5 facilitates the introduction of the power cord, and the double-sided protection coil 6 effectively prevents wire abrasion, ensuring the safety and stability of the electrical connection. This structural design not only improves the convenience of assembly but also enhances the protection performance of the fan junction box.

[0026] The rainproof cover 2 of the fan junction box is in a semi-closed structure. The rainproof cover 2 of the fan junction box is integrally formed by a baffle 7, a connecting plate 8, two side plates 9, a small plate 10, and a mounting plate 11, such that the baffle 7 and the connecting plate 8 are vertically arranged. The two side plates 9 are symmetrically arranged and are both connected to the baffle 7 and the connecting plate 8. The small plate 10 is arranged parallel to the baffle 7 and is connected to the connecting plate 8 and the two side plates 9. The mounting plate 11 is arranged parallel to the connecting plate 8 and is connected to the small plate 10 and the two side plates 9. Three mounting holes corresponding to the three threaded holes on the side surface of the U-shaped fixing seat 1 are penetrated and opened on the mounting plate 11. Adopt a semi-closed structure, which is composed of a baffle 7, a connecting plate 8, two side plates 9, a small plate 10 and a mounting plate 11, so as to have a good protection effect, and can effectively prevent external substances such as rain and dust from entering the fan junction box, prevent the electrical joints from short-circuiting or being damaged. This structure has strong stability and can withstand large wind pressure and rain impact, thereby reducing the risk of the fan junction box being affected by environmental factors. Through precise design, the rain shield 2 of the fan junction box not only has high practicability, but also has good durability and anti-aging ability, and can provide high-quality protection for the fan for a long time.

[0027] The ratio of the length of the connecting plate 8 to the length of the mounting plate 11 is 1, and the ratio of the length of the baffle 7 to the length of the connecting plate 8 is 2.5 - 3; By reasonably designing the size ratio of the connecting plate 8 and the baffle 7, the structure of the rain shield 2 of the fan junction box is made more compact and stable. This design optimizes the overall stability. Especially when承受外力和风压, it can better maintain the balance and impact resistance of the structure. The ratio of the size of the baffle 7 to the connecting plate 8 is designed to be 2.5 - 3, which makes the rain shield have better overall sealing performance, further improves the protection effect, prevents the infiltration of rain or dust, and ensures the electrical safety of the fan junction box. When the ratio is less than 2.5, the length of the baffle 7 is too short. Although the manufacturing cost is saved, the protection effect will be greatly reduced. When the ratio is greater than 3, the length of the baffle 7 is too long. Although the protection effect will be better, it wastes materials and increases the manufacturing cost, and it will be very obstructive, increasing the safety hazard. Therefore, the preferred ratio is 2.5 - 3.

[0028] An operation method of a rain shield for a fan junction box, characterized by including the following steps: S1. Material preparation: Select stainless steel sheet or carbon steel sheet as the basic material of the rain shield 2 of the fan junction box, and manufacture it according to the requirements of the drawing: S11. Processing and manufacturing of the fixing seat 1: Convert the stainless steel sheet or carbon steel sheet into a developed blanking drawing according to the drawing for laser cutting and blanking. The lead hole 5 is also directly processed by laser cutting. Then process the threaded holes for fixing and installing the fan junction box and the three threaded holes for fixing and installing the rain shield 2 of the fan junction box on one side of the U-shaped fixing seat 1. Then use a bending device to bend it into shape according to the requirements of the drawing. Finally, install a double-sided protection coil 6 in the lead hole 5 to prevent wire abrasion; It should be noted that in the original text, "承受外力和风压" seems to be an incomplete or incorrect expression. It might be better to say something like "承受 external forces and wind pressure" for a more accurate translation. But according to the rules, the above is the translation based on the original text.S12. Processing and manufacturing of the rain shield 2 for the fan junction box: Convert the stainless steel sheet material into a developed blanking drawing according to the drawing for laser cutting and blanking. Among them, three mounting holes corresponding to the three threaded holes on the side of the U-shaped fixing seat 1 are also directly processed by laser cutting. Then, use a bending device to bend the raw material of the rain shield 2 for the fan junction box according to the drawing requirements to ensure that the positions, dimensions, and angles of the baffle 7, connecting plate 8, two side plates 9, small plate 10, and mounting plate 11 after bending are consistent with the drawing and form a semi-closed structure. Then, weld the gaps between the connecting plate 8, two side plates 9, and small plate 10; S2. Installation of the rain shield 2 for the fan junction box: S21. At the position on the fan where the fan junction box needs to be installed, open a wire hole, and then install a double-sided protective coil 6 at the wire opening to ensure that the power cord attached to the motor can pass through smoothly and prevent wear; S22. Weld the U-shaped fixing seat 1 to the fan so that the bottoms of the two sides of the U-shaped fixing seat 1 are in contact with the fan housing, so that the side with three threaded holes faces upward. Then, install the fan junction box on the top surface of the U-shaped fixing seat 1 through the fixing bolt 3. Then, lead out the power cord through the wire opening and then through the lead hole 5 and connect it to the wiring terminal in the fan junction box to ensure that the wiring points are not loose and there is no poor contact. Finally, tighten the fan junction box cover; S23. Finally, align the three mounting holes on the mounting plate 11 in the rain shield 2 for the fan junction box with the three threaded holes on the U-shaped fixing seat 1, and use the fixing bolt 3 to fixedly install the rain shield 2 for the fan junction box on the U-shaped fixing seat 1 to ensure that there is no looseness after installation; S3. Maintenance method: S31. Regular inspection: Regularly check whether the rain shield 2 for the fan junction box is loose or damaged to ensure that it can effectively protect the fan junction box for a long time; S32. Cleaning and maintenance: Regularly clean the rain shield 2 for the fan junction box to remove dust, debris, and dirt to avoid affecting the protection performance; This operation method details the manufacturing and installation process of the rain shield 2 for the fan junction box, ensuring that each step meets the requirements of efficient and precise operation. By using stainless steel sheet material or carbon steel sheet material for manufacturing, it can ensure that the protection performance reaches high-quality standards, and this material has good corrosion resistance and strength, enabling it to be used in harsh environments for a long time. The entire operation method includes multiple links from material preparation to installation and maintenance, not only improving production efficiency but also ensuring the quality stability of the product. In addition, the clear regulations on the maintenance steps enable the rain shield 2 for the fan junction box to maintain a long-term effective protection effect and avoid damage caused by improper maintenance.

[0029] The adjustable airbag system includes a monitoring module arranged in the area around the wind turbine junction box rain cover 2 for real-time collection of wind speed and rainfall intensity, a central control module for receiving monitoring module data and timely analyzing and controlling accordingly, an airbag module arranged in the wind turbine junction box rain cover 2 for control by the central control module, and an air pressure sensing module arranged in the airbag for real-time monitoring of air pressure changes and transmitting real-time data to the central control module. The airbag module includes an airbag and an air pressure valve for adjusting the airbag inflation amount according to the control of the central control module. The adjustable airbag system control method includes the following steps: S1-1. Real-time monitoring of wind speed and rainfall intensity: The monitoring module collects wind speed and rainfall intensity in real time. Through these data, the central control module can comprehensively judge the current weather conditions and determine whether to enter the adjustment mode, including the increase or decrease of wind speed and the intensity of rainfall, to provide accurate basic data for subsequent adjustment of the airbag inflation volume. The preset wind speed threshold is A, and the preset rainfall threshold is B. The specific judgment is: If the wind speed A1 shows an upward trend for 5 consecutive seconds and A1 ≥ A, the central control module enters the wind speed response mode and starts to adjust the inflation volume of the airbag through the air pressure valve; If the rainfall B1 is monitored to be B1 ≥ B for three consecutive times, the central control module enters the rainfall intensity response mode and starts to adjust the inflation volume of the airbag through the air pressure valve; S1-2. Data transmission to the central control system: The data from the monitoring module will be sent to the central control module via wireless transmission or wired network. The central control module has powerful data processing capabilities, can receive data in real time, and conduct effective integrated analysis. This data flow is the basis for airbag adjustment decisions, ensuring that the system can respond immediately to environmental changes. If data transmission is interrupted or abnormal, the central control module will trigger an alarm and move to the backup communication method; If the data transmission delay exceeds 3 s, the central control module determines that the data is unreliable and relies on historical data to make supplementary decisions; S1-3. Data analysis and judgment: Once the central control module receives various meteorological data, it will conduct a comprehensive analysis and make judgments on the data. The judgment rules include: If the current wind speed A1≥A and B1≥B, the rainfall intensity adjustment is prioritized to prevent rainwater penetration; S1-4, airbags are adjusted according to wind speed: The central control module adjusts the inflation volume of the airbag through the air pressure valve according to the data analysis results. The specific judgment rules include: If the wind speed A1≥A, the central control module controls to increase the airbag inflation volume to 50% of the preset value; If the wind speed continues to increase and reaches wind speed A2, that is, A2>A1, the central control module further controls the airbag to increase the inflation volume until it reaches the maximum preset value; If the wind speed A1 fluctuates by more than 20% within 5 seconds, the wind speed is considered unstable and inflation is temporarily stopped to avoid airbag damage; S1-5, Real-time feedback of airbag inflation process: The process of airbag inflation needs to be continuously monitored. The air pressure sensor module provides real-time feedback on the air pressure changes in the airbag. The central control module adjusts the inflation strategy based on the feedback information. The specific determination method is as follows: If the air pressure sensing module detects that the air pressure reaches 90% of the maximum preset value, it enters the buffer inflation stage; If the air pressure increases too quickly and exceeds the preset pressure increase speed T, it is judged that the inflation is too fast and the inflation speed is slowed down; If the air pressure is lower than 10% of the minimum preset value, the central control module will control the inflation speed to increase; S1-6, airbags are adjusted according to rainfall: In an environment with heavy rainfall, the airbags are adjusted not only to enhance wind resistance, but also to prevent rain from seeping in through the edges. The specific judgment rules include: If the rainfall B1≥B, the central control module controls and adjusts the airbag inflation volume to prevent rainwater from entering; If the rainfall exceeds twice of B within 15 minutes, that is, B1>2B, it is judged as heavy rainfall, and the central control module controls the increase of the airbag inflation volume to the maximum preset value to enhance the waterproof ability; S1-7, inflation volume and stability adjustment of the fan junction box rain cover 2: The adjustment of the inflation volume is not only to cope with external meteorological changes, but also involves the stability of the cover and the durability of the airbag. Excessive or insufficient inflation will affect the stability of the cover, and may even cause the airbag to rupture or over-expand, resulting in deformation of the appearance of the fan junction box rain cover 2. Therefore, the central control module monitors the air pressure sensor module to achieve precise inflation volume adjustment, ensuring that the airbag can meet the requirements of wind speed and rainfall intensity without excessively affecting the appearance and structure of the fan junction box rain cover 2. S1-8, air bag deflation: When the wind speed or rainfall reaches the reverse change of the threshold, the deflation mechanism of the airbag is activated. The judgment method is: If the wind speed A1 is less than A and the rainfall B1 is less than B, the environment is determined to be stable, and the central control module automatically controls the air pressure in the airbag to be released until it drops to the minimum preset value; If the air pressure in the airbag exceeds the maximum preset value, the central control module will actively start deflation to reduce the pressure until it is less than or equal to the maximum preset value; If an abnormality occurs during the normal deflation of the airbag, including but not limited to excessively fast deflation or uneven deflation, the central control module will immediately stop deflation and report the fault; S1-9, System Adaptability: The adjustable airbag system also has strong adaptive capabilities. As the use time increases, the airbag will age or wear, resulting in the inflation effect not being as expected. The system can monitor the health status of the airbag in real time and make adjustments based on the actual situation of the airbag, including but not limited to automatically increasing the inflation volume or adjusting the inflation speed after the airbag ages, ensuring that even when the airbag performance decreases, it can still provide reliable protection. The adjustable airbag system provided by the present invention can monitor wind speed and rainfall intensity in real time, and automatically adjust the airbag inflation volume of the fan junction box rain cover 2 according to meteorological changes, so as to improve the wind and rain protection effect of the fan junction box rain cover 2. By combining wind speed and rainfall, the system can flexibly respond to different weather changes to ensure that the fan junction box is always in the best protection state. The adjustment of the airbag inflation volume can effectively reduce the influence of wind pressure and prevent rainwater from penetrating, thereby effectively extending the service life. The automatic adjustment capability of the airbag system can greatly reduce manual intervention, improve the self-adaptation capability of the fan junction box rain cover 2, and adapt to various harsh environments. In addition, the system also has a strong health monitoring function, which can automatically detect the aging of the airbag and make compensatory adjustments to ensure the long-term stability of the protective effect.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A rain cover for a fan junction box, characterized in that: Including: A fixed seat (1), welded to the outer peripheral side of the fan and used for fixedly installing the fan junction box and the rainproof cover (2) of the fan junction box; The rainproof cover (2) of the fan junction box, fixedly installed on the fixed seat (1) for protecting the fan to ensure that the fan junction box has the effects of waterproof and dustproof; Fixed bolts (3), used for fixing the fan junction box and the rainproof cover (2) of the fan junction box on the fixed seat (1); The fan junction box connector (4), arranged on the fan junction box and used for accessing the on-site power supply line to control the operation of the fan; An adjustable airbag system for strengthening the windproof and rainproof effects of the rainproof cover (2) of the fan junction box is further arranged on the rainproof cover (2) of the fan junction box.

2. A rain cover for a fan junction box according to claim 1, characterized in that: The fixed seat (1) is arranged in a U shape, and a plurality of threaded holes for fixedly installing the fan junction box are penetrated and opened on the top surface of the U-shaped fixed seat (1). A lead hole (5) for the motor lead is also penetrated and opened on the top surface of the U-shaped fixed seat (1). A double-sided protective coil (6) is fixedly arranged in the lead hole (5). Three threaded holes for fixedly installing the rainproof cover (2) of the fan junction box and distributed in an isosceles triangle are penetrated and opened on one side surface of the U-shaped fixed seat (1).

3. A rain cover for a fan junction box according to claim 1, characterized in that: The rainproof cover (2) of the fan junction box is in a semi-closed structure. The rainproof cover (2) of the fan junction box is integrally formed by a baffle (7), a connecting plate (8), two side plates (9), a small plate (10) and a mounting plate (11), so that the baffle (7) and the connecting plate (8) are vertically arranged. The two side plates (9) are symmetrically arranged and are both connected to the baffle (7) and the connecting plate (8). The small plate (10) is arranged parallel to the baffle (7) and is connected to the connecting plate (8) and the two side plates (9). The mounting plate (11) is arranged parallel to the connecting plate (8) and is connected to the small plate (10) and the two side plates (9). Three mounting holes corresponding to the three threaded holes on the side surface of the U-shaped fixed seat (1) are penetrated and opened on the mounting plate (11).

4. A rain cover for a fan junction box according to claim 3, characterized in that: The ratio of the length of the connecting plate (8) to the length of the mounting plate (11) is 1, and the ratio of the length of the baffle (7) to the length of the connecting plate (8) is 2.5 - 3.

5. An operating method for the rain cover of a fan junction box according to any one of claims 1 to 4, characterized in that: Including the following steps: S1. Material preparation: Select stainless steel sheet or carbon steel sheet as the basic material of the rainproof cover (2) of the fan junction box and manufacture it according to the drawing requirements: S11. Processing and manufacturing of the fixed seat (1): Convert the stainless steel sheet or carbon steel sheet into an expanded blanking drawing according to the drawing for laser cutting and blanking. The lead hole (5) is also directly processed by laser cutting. Then process the threaded holes for fixedly installing the fan junction box and the three threaded holes for fixedly installing the rainproof cover (2) of the fan junction box on one side surface of the U-shaped fixed seat (1). Then use a bending device to bend it into shape according to the drawing requirements. Finally, install the double-sided protective coil (6) in the lead hole (5) to prevent wire abrasion; S12. Processing and manufacturing of the rain shield (2) for the fan junction box: Convert the stainless steel sheet material into a developed blanking drawing according to the drawing and perform laser cutting blanking. Among them, three mounting holes corresponding to the three threaded holes on the side of the U-shaped fixing seat (1) are also directly processed by laser cutting. Then, use a bending device to bend the raw material of the rain shield (2) for the fan junction box according to the drawing requirements to ensure that the positions, dimensions, and angles of the baffle (7), connecting plate (8), two side plates (9), small plate (10), and mounting plate (11) after bending are consistent with the drawing and form a semi-closed structure. Then, weld the gaps between the connecting plate (8), two side plates (9), and small plate (10); S2. Installation of the rain shield (2) for the fan junction box: S21. Open a wire hole at the position on the fan where the fan junction box needs to be installed, and then install a double-sided protective coil (6) at the wire port to ensure that the power cord attached to the motor can pass through smoothly and prevent wear; S22. Weld the U-shaped fixing seat (1) to the fan so that the bottoms of the two sides of the U-shaped fixing seat (1) are in contact with the fan housing, so that the side with three threaded holes faces upward. Then, install the fan junction box on the top surface of the U-shaped fixing seat (1) through the fixing bolts (3). Then, lead out the power cord through the wire port and then through the lead hole (5) and connect it to the wiring terminal in the fan junction box to ensure that the wiring points are free of looseness and poor contact. Finally, tighten the fan junction box cover; S23. Finally, align the three mounting holes on the mounting plate (11) in the rain shield (2) for the fan junction box with the three threaded holes on the U-shaped fixing seat (1), and use the fixing bolts (3) to fixedly install the rain shield (2) for the fan junction box to the U-shaped fixing seat (1) to ensure that there is no looseness after installation; S3. Maintenance method: S31. Regular inspection: Regularly check whether the rain shield (2) for the fan junction box is loose or damaged to ensure that it can effectively protect the fan junction box for a long time; S32. Cleaning and maintenance: Regularly clean the rain shield (2) for the fan junction box to remove dust, debris, and dirt to avoid affecting the protection performance.

6. A rain cover for a fan junction box according to claim 1, characterized in that: The adjustable airbag system includes a monitoring module arranged in the surrounding area of the rain shield (2) for the fan junction box for real-time collection of wind speed and rainfall intensity, a central control module for receiving the data of the monitoring module and making timely analysis and corresponding control, an airbag module arranged in the rain shield (2) for the fan junction box for control through the central control module, and a pressure sensing module arranged in the airbag for real-time monitoring of air pressure changes and transmitting real-time data to the central control module. The airbag module includes an airbag and a pressure valve for adjusting the airbag inflation amount according to the control of the central control module. The control method of the adjustable airbag system includes the following steps: S1-1. Real-time monitoring of wind speed and rainfall intensity: The monitoring module collects wind speed and rainfall intensity in real time. Through these data, the central control module can comprehensively judge the current weather conditions and determine whether to enter the adjustment mode, including the increase or decrease of wind speed and the intensity of rainfall, to provide accurate basic data for subsequent adjustment of the airbag inflation volume. The preset wind speed threshold is A, and the preset rainfall threshold is B. The specific judgment is: If the wind speed A1 shows an upward trend for 5 consecutive seconds and A1 ≥ A, the central control module enters the wind speed response mode and starts to adjust the inflation volume of the airbag through the air pressure valve; If the rainfall B1 is monitored to be B1 ≥ B for three consecutive times, the central control module enters the rainfall intensity response mode and starts to adjust the inflation volume of the airbag through the air pressure valve; S1-2. Data transmission to the central control system: The data from the monitoring module will be sent to the central control module via wireless transmission or wired network. The central control module has powerful data processing capabilities, can receive data in real time, and conduct effective integrated analysis. This data flow is the basis for airbag adjustment decisions, ensuring that the system can respond immediately to environmental changes. If data transmission is interrupted or abnormal, the central control module will trigger an alarm and move to the backup communication method; If the data transmission delay exceeds 3 s, the central control module determines that the data is unreliable and relies on historical data to make supplementary decisions; S1-3. Data analysis and judgment: Once the central control module receives various meteorological data, it will conduct a comprehensive analysis and make judgments on the data. The judgment rules include: If the current wind speed A1≥A and B1≥B, the rainfall intensity adjustment is prioritized to prevent rainwater penetration; S1-4, airbags are adjusted according to wind speed: The central control module adjusts the inflation volume of the airbag through the air pressure valve according to the data analysis results. The specific judgment rules include: If the wind speed A1≥A, the central control module controls to increase the airbag inflation volume to 50% of the preset value; If the wind speed continues to increase and reaches wind speed A2, that is, A2>A1, the central control module further controls the airbag to increase the inflation volume until it reaches the maximum preset value; If the wind speed A1 fluctuates by more than 20% within 5 seconds, the wind speed is considered unstable and inflation is temporarily stopped to avoid airbag damage; S1-5, Real-time feedback of airbag inflation process: The process of airbag inflation needs to be continuously monitored. The air pressure sensor module provides real-time feedback on the air pressure changes in the airbag. The central control module adjusts the inflation strategy based on the feedback information. The specific determination method is as follows: If the air pressure sensing module detects that the air pressure reaches 90% of the maximum preset value, it enters the buffer inflation stage; If the air pressure increases too quickly and exceeds the preset pressure increase speed T, it is judged that the inflation is too fast and the inflation speed is slowed down; If the air pressure is lower than 10% of the minimum preset value, the central control module will control the inflation speed to increase; S1-6, airbags are adjusted according to rainfall: In an environment with heavy rainfall, the airbags are adjusted not only to enhance wind resistance, but also to prevent rain from seeping in through the edges. The specific judgment rules include: If the rainfall B1≥B, the central control module controls and adjusts the airbag inflation volume to prevent rainwater from entering; If the rainfall exceeds twice of B within 15 minutes, that is, B1>2B, it is judged as heavy rainfall, and the central control module controls the increase of the airbag inflation volume to the maximum preset value to enhance the waterproof ability; S1-7, Adjustment of the inflation volume and the stability of the rain cover (2) of the fan junction box: The adjustment of the inflation volume is not only for responding to external meteorological changes, but also involves the stability of the cover and the durability of the airbag. Excessive or insufficient inflation will affect the stability of the cover, and may even cause the airbag to rupture or over-expand, resulting in deformation of the appearance of the wind turbine junction box rain cover (2). Therefore, the central control module monitors the air pressure sensor module to achieve accurate inflation volume adjustment, ensuring that the airbag can meet the requirements of wind speed and rainfall intensity without excessively affecting the appearance and structure of the wind turbine junction box rain cover (2). S1-8, air bag deflation: When the wind speed or rainfall reaches the reverse change of the threshold, the deflation mechanism of the airbag is activated. The judgment method is: If the wind speed A1 is less than A and the rainfall B1 is less than B, the environment is determined to be stable, and the central control module automatically controls the air pressure in the airbag to be released until it drops to the minimum preset value; If the air pressure in the airbag exceeds the maximum preset value, the central control module will actively start deflation to reduce the pressure until it is less than or equal to the maximum preset value; If an abnormality occurs during the normal deflation of the airbag, including but not limited to excessively fast deflation or uneven deflation, the central control module will immediately stop deflation and report the fault; S1-9, System Adaptability: The adjustable airbag system also has strong adaptive capabilities; as the use time increases, the airbag will age or wear, resulting in the inflation effect being less than expected. The system can monitor the health status of the airbag in real time and adjust it according to the actual situation of the airbag, including but not limited to automatically increasing the inflation volume or adjusting the inflation speed after the airbag ages, ensuring that even when the airbag performance decreases, it can still provide reliable protection.

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