Photovoltaic grid-connected cabinet with state monitoring function

Abstract

The application discloses a photovoltaic grid-connected cabinet with a state monitoring function applied to the technical field of electrical cabinets. In a strong wind environment, the strong wind exerts force on the elastic wind direction sail plate, so that the exhaust pipe rotates, the V-shaped tip of the elastic wind direction sail plate always faces the direction of the strong wind, the elastic wind direction sail plate blocks the strong wind from directly blowing on the air outlet area of the outer end of the exhaust pipe, effectively prevents sundries brought by the strong wind from blocking the exhaust pipe, and effectively prevents the strong wind from blowing sand and dust into the exhaust pipe, the strong wind is blown into the air suction pipe through the air inlet, and the two ends of the elastic wind direction sail plate are close to each other under the influence of the wind force of the strong wind, so that the two linkage rods are folded and a pushing force is applied to the push-pull rod, the push-pull rod drives the wind shield to close the air inlet, the greater the wind force of the strong wind, the higher the closing degree of the air inlet, and the air inlet amount of the air suction pipe is effectively controlled.

Description

Technical Field

[0001] This invention relates to the field of electrical cabinet technology, and in particular to a photovoltaic grid-connected cabinet with status monitoring function. Background Technology

[0002] As an indispensable key device in photovoltaic power generation systems, photovoltaic grid-connected cabinets require heat dissipation for their internal electrical equipment. These cabinets typically utilize cooling fans and ventilation holes for heat dissipation, as exemplified by the photovoltaic grid-connected cabinet disclosed in Chinese Patent CN119171289B. However, since photovoltaic equipment is often installed in open areas, especially in the Gobi Desert of Northwest China, existing photovoltaic grid-connected cabinets are prone to dust ingress, which can affect the normal operation of internal equipment. Therefore, it is necessary to prevent dust from entering the photovoltaic grid-connected cabinet. For example, in a distributed photovoltaic power generation grid-connected distribution cabinet disclosed in Chinese Patent CN118920298B, existing dust-prevention structures are mostly located at the air intake of the photovoltaic grid-connected cabinet, lacking dust-proof structures at the exhaust location. Especially in the Gobi Desert environment, strong winds carrying dust can more easily enter the photovoltaic grid-connected cabinet through the exhaust location. Summary of the Invention

[0003] The core of this invention lies in using an elastic wind vane that rotates according to the wind direction to block sand and dust from blowing directly onto the exhaust pipe, thus solving the problem of the lack of sand and dust prevention structures at the exhaust location in the prior art.

[0004] To solve the above problems, the present invention adopts the following technical solution.

[0005] A photovoltaic grid-connected cabinet with condition monitoring function includes a sealed cabinet and an environmental condition monitoring system adapted to the sealed cabinet. An exhaust pipe is rotatably connected to the top of the sealed cabinet, and an air intake pipe is sleeved in the middle of the exhaust pipe. A fixed air duct is fixedly connected inside the sealed cabinet. The top of the fixed air duct is rotatably connected to the bottom of the air intake pipe. An exhaust fan is fixedly connected to the outside of the bottom of the air intake pipe. The top of the air intake pipe is higher than the top of the exhaust pipe, and an elastic wind direction sail is fixedly connected between the top of the air intake pipe and the top of the exhaust pipe.

[0006] The environmental condition monitoring system includes a wind speed sensing module and a temperature sensing module, and the opening and closing of the exhaust fan is linked to the environmental condition monitoring system.

[0007] The flexible wind vane is V-shaped and curved, with an air inlet between the tip of the flexible wind vane and the air intake pipe. A wind deflector is rotatably connected to the top of the air intake pipe, and the wind deflector is in contact with the air inlet. A push-pull rod is inserted into the end of the air intake pipe away from the flexible wind vane. One end of the push-pull rod is hinged to the wind deflector, and the other end of the push-pull rod is hinged to both ends of the flexible wind vane.

[0008] Furthermore, an air inlet screen is fixedly connected to the outside of the air inlet, and a limit block is fixedly connected to the bottom of the air inlet screen, with the bottom of the baffle plate in contact with the limit block.

[0009] Furthermore, an exhaust screen is fixedly connected to the top of the exhaust duct, and both ends of the exhaust screen are fixedly connected to the bottom inner wall of the elastic wind vane.

[0010] Furthermore, a connecting hole is provided at the bottom of the flexible wind vane, which is flush with the bottom of the exhaust screen. A wind-guiding plate is fixedly connected to the end of the connecting hole away from the tip of the flexible wind vane, and the wind-guiding plate is curved towards the exhaust screen.

[0011] Preferably, a duct plug is inserted into the bottom of the fixed duct, and a filter assembly is fixedly connected to the top of the duct plug. The filter assembly is installed at a height higher than the exhaust fan.

[0012] Furthermore, the filter assembly includes a collection ring fixedly connected to the duct plug and a filter screen threadedly connected to the inner ring at the top of the collection ring.

[0013] Furthermore, a fixed shaft is fixedly connected to the inner wall of the air intake duct. The fixed shaft is coaxially arranged with the center of the fixed air duct, and the bottom of the fixed shaft extends into the fixed air duct. A cleaning strip is fixedly connected to the bottom end of the fixed shaft. The cleaning strip slides in contact with the top surface of the filter screen. The filter screen is conical in shape.

[0014] Furthermore, a cover film ring is fixedly connected to the top outer ring of the collection ring, the inner ring of the cover film ring contacts the bottom of the filter screen, and a pressing pad is fixedly connected to the bottom end of the cleaning strip, the bottom of the pressing pad slidingly contacts the top of the cover film ring.

[0015] Compared with the prior art, the advantages of this invention are:

[0016] (1) In a strong wind environment, the strong wind exerts force on the elastic wind direction sail, causing the exhaust pipe to rotate, so that the V-shaped tip of the elastic wind direction sail always faces the direction of the strong wind. The elastic wind direction sail blocks the strong wind from blowing directly to the air outlet area at the outer end of the exhaust pipe, effectively preventing debris carried by the strong wind from clogging the exhaust pipe, and effectively preventing the strong wind from blowing sand and dust into the exhaust pipe.

[0017] (2) The present invention enables strong wind to be blown into the suction pipe autonomously through the air inlet, and the two ends of the elastic wind direction sail are brought together by the wind force of the strong wind, so that the two linkage rods are closed and push the push-pull rod. The push-pull rod pushes the wind deflector to close the air inlet, so that the stronger the wind force, the higher the degree of closure of the wind deflector to the air inlet, effectively controlling the air intake of the suction pipe. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a bottom-view perspective view of the sealed cabinet of the present invention;

[0020] Figure 3 This is a top enlarged view of the elastic windward sail of the present invention;

[0021] Figure 4 This is a bottom-view perspective structural diagram of the elastic windward sail of the present invention;

[0022] Figure 5 This is an enlarged cross-sectional view of the exhaust pipe and intake pipe of the present invention;

[0023] Figure 6 This is a demonstration diagram of the rotational movement of the wind deflector of the present invention;

[0024] Figure 7 This is a cross-sectional view of the exhaust duct, intake duct, and fixed duct of the present invention;

[0025] Figure 8 This is a three-dimensional cross-sectional view of the fixed air duct of the present invention;

[0026] Figure 9 A three-dimensional structural diagram of the collection ring and filter screen cover of the present invention;

[0027] Figure 10 This is a diagram showing the separate components of the collection ring, filter screen, cleaning strip, and covering membrane ring of the present invention.

[0028] Explanation of the labels in the diagram:

[0029] 1. Sealed cabinet, 101. Exhaust duct, 102. Suction duct, 103. Fixed duct, 104. Exhaust fan, 105. Flexible wind vane, 106. Air inlet, 107. Wind deflector, 108. Push-pull rod, 109. Linkage rod, 110. Air inlet screen, 111. Limiting block, 112. Exhaust screen, 113. Connecting hole, 114. Air duct vent, 2. Duct plug, 201. Collection ring, 202. Filter screen, 203. Fixed shaft, 204. Cleaning strip, 205. Covering membrane ring, 206. Pressing pad. Detailed Implementation

[0030] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0031] First implementation method:

[0032] Please see Figures 1 to 4A photovoltaic grid-connected cabinet with condition monitoring function includes a sealed cabinet 1 and an environmental condition monitoring system adapted to the sealed cabinet 1. An exhaust pipe 101 is rotatably connected to the top of the sealed cabinet 1, and an intake pipe 102 is sleeved in the middle of the exhaust pipe 101. A fixed air pipe 103 is fixedly connected inside the sealed cabinet 1, with the top end of the fixed air pipe 103 rotatably connected to the bottom end of the intake pipe 102. An exhaust fan 104 is fixedly connected to the outside of the bottom end of the intake pipe 102. The exhaust fan 104 draws cold outside air into the sealed cabinet 1, and hot air from the sealed cabinet 1 is discharged outwards through the exhaust pipe 101. The top of the intake pipe 102 is higher than the top of the exhaust pipe 101, and an elastic wind vane 105 is fixedly connected between the top of the intake pipe 102 and the top of the exhaust pipe 101. In strong wind conditions, the strong wind causes the elastic wind vane 105 to rotate, causing the elastic wind vane 105 to rotate. The outer port of the exhaust duct 101 is always covered to effectively prevent debris carried by strong winds from clogging the exhaust duct 101. An exhaust screen 112 is fixedly connected to the top of the exhaust duct 101. Both ends of the exhaust screen 112 are fixedly connected to the bottom inner wall of the elastic wind vane 105. The exhaust screen 112 protects the opening of the exhaust duct 101 and prevents external debris from entering the exhaust duct 101. A connecting opening is provided at the bottom of the elastic wind vane 105. Hole 113, the connecting hole 113 is flush with the bottom of the exhaust screen 112, and the end of the connecting hole 113 away from the tip of the elastic wind vane 105 is fixedly connected to the air guide plate 114. The air guide plate 114 is curved towards the exhaust screen 112. In a strong wind environment, the strong wind passes through the connecting hole 113 and is guided by the air guide plate 114, so that the strong wind blows towards the exhaust screen 112 and blows away the debris trapped outside the exhaust screen 112.

[0033] When the sealed cabinet 1 is in a strong wind environment, the strong wind blows towards the elastic wind vane 105, causing the exhaust pipe 101 to rotate. The elastic wind vane 105 blocks the strong wind from blowing directly towards the air outlet area at the outer end of the exhaust pipe 101, effectively preventing debris carried by the strong wind from clogging the exhaust pipe 101.

[0034] Please see Figures 3 to 6The flexible wind vane 105 is V-shaped, and an air inlet 106 is provided between the tip of the flexible wind vane 105 and the air intake pipe 102. The V-shaped tip of the flexible wind vane 105 faces the direction of strong wind, allowing strong wind to enter the air intake pipe 102 through the air inlet 106. An air inlet mesh cover 110 is fixedly connected to the outside of the air inlet 106. A wind deflector 107 is rotatably connected to the top of the air intake pipe 102. The air inlet mesh cover 110 provides protection for the wind deflector 107 inside the air inlet 106. The wind deflector 107 is in movable contact with the air inlet 106. A limit block 111 is fixedly connected to the bottom of the air inlet mesh cover 110. The bottom of the wind deflector 107 contacts the limit block 111, and the limit block 111 blocks the wind deflector 107 from flipping, effectively preventing the wind deflector from flipping. 107 completely closes the air inlet 106. In strong wind conditions, the air inlet 106 can remain in the lowest open state. A push-pull rod 108 is inserted into the end of the suction pipe 102 away from the elastic wind vane 105. One end of the push-pull rod 108 is hinged to the wind deflector 107. The other end of the push-pull rod 108 is hinged to both ends of the elastic wind vane 105. The two ends of the elastic wind vane 105 are brought closer together by the wind force of the strong wind, so that the two linkage rods 109 close and push the push-pull rod 108. The push-pull rod 108 pushes the wind deflector 107 to close the air inlet 106. The stronger the wind force, the higher the degree of closure of the wind deflector 107 to the air inlet 106, effectively controlling the air intake of the suction pipe 102.

[0035] The environmental status monitoring system includes a wind speed sensing module and a temperature sensing module. The opening and closing of the exhaust fan 104 is linked to the environmental status monitoring system. The wind speed sensing module monitors the wind speed in the environment where the sealed cabinet 1 is located. The wind speed sensing module uses an anemometer, which is installed on the top of the sealed cabinet 1. In a strong wind environment, the strong wind can be blown into the air inlet 106, so that the exhaust fan 104 can be stopped, effectively reducing the energy consumption of the exhaust fan 104. The temperature sensing module monitors the internal temperature of the sealed cabinet 1. The temperature sensing module uses a temperature sensor (not shown in the attached figure), which provides a temperature judgment factor for the opening and closing of the exhaust fan 104, and more accurately judges the opening and closing operation of the exhaust fan 104. Specifically, when the sealed cabinet 1 is in a strong wind environment and the internal temperature of the sealed cabinet 1 is high, the exhaust fan 104 still needs to be kept powered on.

[0036] When the sealed cabinet 1 is in a strong wind environment, the strong wind exerts force on the elastic wind vane 105, causing the exhaust pipe 101 to rotate. The V-shaped tip of the elastic wind vane 105 faces the direction of the strong wind, and the strong wind enters the suction pipe 102 through the air inlet 106, realizing the autonomous air intake of the suction pipe 102. Furthermore, the two ends of the elastic wind vane 105 are affected by the wind force and move closer to each other, causing the two linkage rods 109 to close and push the push-pull rod 108. The push-pull rod 108 pushes the wind deflector 107 to close the air inlet 106, achieving the effect that the greater the wind force, the higher the degree of closure of the wind deflector 107 to the air inlet 106, effectively controlling the air intake of the suction pipe 102.

[0037] Second implementation method:

[0038] Please see Figures 7 to 10 A duct plug 2 is inserted into the bottom of the fixed duct 103, and a filter assembly is fixedly connected to the top of the duct plug 2. The filter assembly is positioned higher than the exhaust fan 104. The filter assembly filters the sand and dust entering the fixed duct 103. The filter assembly includes a collection ring 201 fixedly connected to the duct plug 2 for collecting sand and dust, and a filter screen 202 threadedly connected to the inner ring of the top of the collection ring 201 for filtering sand and dust. A fixed shaft 203 is fixedly connected to the inner wall of the suction pipe 102. The fixed shaft 203 is coaxially arranged with the center of the fixed duct 103, and the bottom of the fixed shaft 203 extends into the fixed duct 103. A cleaning strip 204 is fixedly connected to the bottom end of the fixed shaft 203. The cleaning strip 204 slides in contact with the top surface of the filter screen 202. The fixed shaft 203 rotates with the suction pipe 102, causing the cleaning strip 204 to filter the sand and dust. The screen cover 202 is scraped and cleaned to restore its sand and dust filtration capacity. The screen cover 202 is conical in shape. A cover film ring 205 is fixedly connected to the top outer ring of the collection ring 201. The inner ring of the cover film ring 205 contacts the bottom of the screen cover 202. The cover film ring 205 blocks the gap between the collection ring 201 and the screen cover 202, effectively preventing the sand and dust in the collection ring 201 from leaking out. A pressing pad 206 is fixedly connected to the bottom end of the cleaning strip 204. The bottom of the pressing pad 206 slides in contact with the top of the cover film ring 205. During the scraping and cleaning process of the cleaning strip 204 on the screen cover 202, the cleaned sand and dust fall downward along the conical surface of the screen cover 202. Then, the pressing pad 206 applies pressure to the sand and dust, causing the sand and dust to press the inner ring of the cover film ring 205 downward and flip it over, so that the sand and dust enter the collection ring 201.

[0039] After cold air enters the fixed air duct 103, the filter screen 202 filters the sand and dust in the cold air, effectively preventing the sand and dust from entering the sealed cabinet 1 and protecting the electrical equipment inside the sealed cabinet 1. In strong winds, the fixed shaft 203 rotates with the suction pipe 102, causing the cleaning strip 204 to scrape and clean the filter screen 202, restoring its sand and dust filtering capacity. The cleaned sand and dust fall downwards along the conical surface of the filter screen 202, and is then further removed by pressing the pad 206. Applying pressure to the dust causes the inner ring of the cover 205 to flip downwards, allowing the dust to enter the collection ring 201. The cover 205 acts as a barrier between the collection ring 201 and the filter screen 202, effectively preventing the dust in the collection ring 201 from leaking out. When cleaning and maintaining the sealed cabinet 1, first remove the duct plug 2, take out the filter assembly from the fixed duct 103, and then rotate to separate the threaded connection between the collection ring 201 and the filter screen 202 to clean the dust in the collection ring 201.

[0040] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A photovoltaic grid-connected cabinet with condition monitoring function, comprising a sealed cabinet (1) and an environmental condition monitoring system adapted to the sealed cabinet (1), characterized in that: The top of the sealed cabinet (1) is rotatably connected to an exhaust pipe (101), and an air suction pipe (102) is sleeved in the middle of the exhaust pipe (101). A fixed air pipe (103) is fixedly connected inside the sealed cabinet (1). The top end of the fixed air pipe (103) is rotatably connected to the bottom end of the air suction pipe (102). An exhaust fan (104) is fixedly connected to the outside of the bottom end of the air suction pipe (102). The top end of the air suction pipe (102) is higher than the top end of the exhaust pipe (101), and an elastic wind vane (105) is fixedly connected between the top end of the air suction pipe (102) and the top end of the exhaust pipe (101). The flexible wind vane (105) is V-shaped and curved, with an air inlet (106) between the tip of the flexible wind vane (105) and the air intake pipe (102). A wind deflector (107) is rotatably connected to the top of the air intake pipe (102), and the wind deflector (107) is in contact with the air inlet (106). A push-pull rod (108) is inserted into the end of the top of the air intake pipe (102) away from the flexible wind vane (105). One end of the push-pull rod (108) is hinged to the wind deflector (107), and the other end of the push-pull rod (108) is hinged to both ends of the flexible wind vane (105) with a linkage rod (109). An air intake mesh is fixedly connected to the outside of the air inlet (106). (110), the bottom of the air inlet screen (110) is fixedly connected to the limiting block (111), the bottom of the wind baffle (107) is in contact with the limiting block (111), the top of the exhaust pipe (101) is fixedly connected to the exhaust screen (112), both ends of the exhaust screen (112) are fixedly connected to the bottom inner wall of the elastic wind direction sail (105), the bottom of the elastic wind direction sail (105) is provided with a connecting hole (113), the connecting hole (113) is flush with the bottom of the exhaust screen (112), and the end of the connecting hole (113) away from the tip of the elastic wind direction sail (105) is fixedly connected to a wind guide plate (114), the wind guide plate (114) is curved towards the exhaust screen (112). The environmental condition monitoring system includes a wind speed sensing module and a temperature sensing module, and the opening and closing of the exhaust fan (104) is linked to the environmental condition monitoring system.

2. A photovoltaic grid-connected cabinet with condition monitoring function according to claim 1, characterized in that: A duct plug (2) is inserted into the bottom of the fixed duct (103), and a filter assembly is fixedly connected to the top of the duct plug (2). The filter assembly is set at a height higher than the exhaust fan (104).

3. A photovoltaic grid-connected cabinet with condition monitoring function according to claim 2, characterized in that: The filter assembly includes a collection ring (201) fixedly connected to the duct plug (2) and a filter screen cover (202) threadedly connected to the inner top ring of the collection ring (201).

4. A photovoltaic grid-connected cabinet with condition monitoring function according to claim 3, characterized in that: A fixed shaft (203) is fixedly connected to the inner wall of the air intake pipe (102). The fixed shaft (203) is coaxially arranged with the center of the fixed air pipe (103), and the bottom of the fixed shaft (203) extends into the fixed air pipe (103). A cleaning strip (204) is fixedly connected to the bottom end of the fixed shaft (203). The cleaning strip (204) slides in contact with the top surface of the filter screen (202). The filter screen (202) is conical in shape.

5. A photovoltaic grid-connected cabinet with condition monitoring function according to claim 4, characterized in that: The top outer ring of the collection ring (201) is fixedly connected to a cover film ring (205), the inner ring of the cover film ring (205) is in contact with the bottom of the filter screen (202), and the bottom end of the cleaning strip (204) is fixedly connected to a pressing pad (206), the bottom of the pressing pad (206) is in sliding contact with the top of the cover film ring (205).

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