Mountain photovoltaic field forest fire prevention device powered by solar energy

Abstract

The utility model belongs to the technical field of fire prevention devices, and particularly relates to a solar-powered mountain photovoltaic field forest fire prevention device which comprises a plurality of fixing supports distributed at equal intervals and a photovoltaic inverter box, and a direct-current input unit, an inversion unit and a control circuit are installed in the photovoltaic inverter box. The direct current input unit is composed of a power supply and a filter, the inversion unit is composed of a transformer, a power switch tube MOSFET, a short circuit protection circuit, an output filter circuit, a resonance circuit and the like, and the photovoltaic inverter box is fixedly installed on the fixing support. According to the utility model, external airflow is driven by the fan to enter the photovoltaic inverter box for heat dissipation, dust in the air is filtered by the groove area of the dustproof net, and the impeller is pushed by external natural wind to rotate, so that the rotating shaft drives the brush plate to rotate, and automatic dust removal of the groove area can be realized; and the influence of dust accumulation on the ventilation effect is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire prevention devices, in particular to a forest fire prevention device for mountain photovoltaic power generation areas powered by solar energy. Background Art

[0002] An inverter is the heart of a solar photovoltaic power generation system. It converts the direct current generated by photovoltaic modules into alternating current, transmits it to local loads or the power grid, and is a power electronic device with relevant protection functions. Since a large number of complex electrical components are installed inside the inverter, when the inverter is working normally, a large number of complex electrical components do work, generating a large amount of heat inside the inverter. When a large amount of heat inside the inverter cannot be effectively dissipated, it will cause faults such as short circuits in the electrical components, and in severe cases, it will even cause major safety accidents such as mountain or forest fires in the nearby area due to the inverter catching fire at high temperature.

[0003] The existing Chinese patent with the publication number CN218526629U discloses a forest fire prevention device for mountain photovoltaic string inverters, including an inverter box, which includes a box base and heat dissipation covers arranged on both sides of the box base; and a fire prevention and heat dissipation device, installed on the top of the inverter box, which includes a blower box, air inlets opened around the blower box, and a connecting plate installed at the bottom of the blower box.

[0004] Regarding the above and existing related technologies, the inventor believes that there are often the following defects: the device lacks effective and rapid fire extinguishing measures when the inverter box catches fire spontaneously and needs to be improved; therefore, a forest fire prevention device for mountain photovoltaic power generation areas powered by solar energy is proposed to solve the above problems. Summary of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model proposes a forest fire prevention device for mountain photovoltaic power generation areas powered by solar energy.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows: A forest fire prevention device for a mountain photovoltaic power generation area powered by solar energy according to the present utility model includes a number of equally spaced fixed brackets and a photovoltaic inverter box. Inside the photovoltaic inverter box, a DC input unit, an inversion unit, and a control circuit are installed. The DC input unit is composed of a power supply and a filter. The inversion unit is composed of a transformer, a power switch tube MOSFET, a short-circuit protection circuit, an output filter circuit, a resonance circuit, etc. The photovoltaic inverter box is fixedly installed on the fixed bracket. A ventilation opening is provided at the bottom of the photovoltaic inverter box. Inside the ventilation opening, a heat dissipation box with openings at both the upper and lower ends is fixedly connected. A heat dissipation component is installed on the heat dissipation box. The heat dissipation component includes a blower and a dust-proof net distributed from top to bottom. Both the blower and the dust-proof net are fixedly connected to the heat dissipation box. A semi-circular groove is provided on the surface of the dust-proof net. A rotating shaft is installed at the center of the groove and penetrates and is rotatably connected to the heat dissipation box. A number of brush plates are fixedly connected to the surface of the rotating shaft. Impellers are fixedly connected to both ends of the rotating shaft. During use, the photovoltaic inverter box is installed on the fixed bracket for use. The blower is operated to drive external air flow into the interior of the photovoltaic inverter box for heat dissipation, and the dust in the air is filtered by the groove area of the dust-proof net. Moreover, the external natural wind pushes the impellers to rotate, causing the rotating shaft to drive the brush plates to rotate, so as to automatically clean the dust in the groove area and reduce the accumulation of dust from affecting the ventilation effect.

[0007] Preferably, the heat dissipation component further includes a number of thermoelectric coolers. The thermoelectric coolers are fixedly installed on the surface of the heat dissipation box. The heat dissipation end of the thermoelectric cooler is located outside the heat dissipation box, and the refrigeration end of the thermoelectric cooler is located inside the heat dissipation box. The heat dissipation effect of the blower is improved by the refrigeration of the thermoelectric cooler.

[0008] Preferably, the end of the brush plate away from the rotating shaft fits against the groove.

[0009] Preferably, fire partitions made of fireproof materials are fixedly connected to both sides of the fixed bracket. A main pipeline is fixedly connected to the upper side wall of the fire partition. The main pipeline is connected to a delivery pump through a pipeline. The delivery pump is connected to a container filled with a fire extinguishing medium through a pipeline. The fire extinguishing medium is dry powder or carbon dioxide. The delivery pump is a powder delivery pump or a gas delivery pump. The fire partition can isolate the photovoltaic inverter box to prevent the spread of fire when spontaneous combustion occurs.

[0010] Preferably, a number of fire extinguishing components are installed on the fire partition and the main pipeline. The fire extinguishing component includes a rotary joint and two connecting joints. The connecting joints are fixedly installed on the main pipeline. Solenoid valves are installed on the connecting joints. The connecting joints are connected to a branch pipe through a flexible pipe. A number of spray heads are installed at the bottom of the branch pipe. When the smoke alarm detects a fire, it generates an alarm and simultaneously controls the operation of the delivery pump and the solenoid valve in this area to open. The fire extinguishing medium is pumped by the delivery pump from the main pipeline into the branch pipe and sprayed out by the spray heads to automatically extinguish the photovoltaic inverter box below.

[0011] Preferably, the branch pipe includes two pipe bodies, and a connecting seat is fixedly connected to the opposite side of the two pipe bodies.

[0012] Preferably, sliders are fixedly connected to both ends of the branch pipe, and the sliders are slidably connected to the fire partition.

[0013] Preferably, the rotary joint is fixedly installed on the main pipeline. A reciprocating lead screw is rotatably connected inside the rotary joint, and the reciprocating lead screw is threadedly connected to the branch pipe.

[0014] Preferably, a number of blades are fixedly connected to one end of the reciprocating lead screw located inside the rotary joint. When the fire extinguishing medium flows inside the main pipeline, the blades are pushed to drive the reciprocating lead screw to rotate, so that the branch pipe reciprocates, expanding the fire extinguishing range and improving the fire extinguishing effect.

[0015] Preferably, a smoke alarm is fixedly connected to the top of the fixed bracket, and the smoke alarm is electrically connected to the delivery pump and the adjacent solenoid valve.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. The present utility model drives external air flow into the photovoltaic inverter box through a fan for heat dissipation, and filters dust in the air through the groove area of the dust-proof net. Moreover, the external natural wind pushes the impeller to rotate, so that the rotating shaft drives the brush plate to rotate, which can realize automatic dust cleaning of the groove area and reduce the influence of dust accumulation on the ventilation effect.

[0018] 2. When the smoke alarm of the present utility model detects a fire, it generates an alarm and simultaneously controls the operation of the delivery pump and the solenoid valve in this area to open. The fire extinguishing medium is pumped by the delivery pump from the main pipeline into the branch pipe and sprayed out by the spray heads to automatically extinguish the photovoltaic inverter box below. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Schematic diagram of the fixed bracket and the photovoltaic inverter box structure of the present invention;

[0022] Figure 3 Cross-sectional view of the heat dissipation box of the present invention;

[0023] Figure 4 Schematic diagram of the fire extinguishing component structure of the present invention;

[0024] Figure 5 Schematic diagram of the connection between the reciprocating lead screw and the branch pipe of the present invention.

[0025] In the figure: 1, fixed bracket; 2, photovoltaic inverter box; 3, heat dissipation box; 4, heat dissipation component; 41, fan; 42, dustproof net; 43, rotating shaft; 44, brush plate; 45, impeller; 46, semiconductor refrigeration sheet; 5, fireproof partition; 6, main pipe; 7, fire extinguishing component; 8, smoke alarm; 71, rotary joint; 72, connecting joint; 73, solenoid valve; 74, branch pipe; 75, nozzle; 76, slider; 77, reciprocating lead screw; 78, blade; 741, pipe body; 742, connecting seat. Specific embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] Embodiment 1

[0028] Please refer to Figures 1-3As shown in the figure, a forest fire prevention device for a mountain photovoltaic power generation area powered by solar energy includes a number of equally spaced fixed brackets 1 and photovoltaic inverter boxes 2. Inside the photovoltaic inverter box 2, there are a DC input unit, an inversion unit, and a control circuit. The DC input unit consists of a power supply and a filter. The inversion unit consists of a transformer, a power switch tube MOSFET, a short-circuit protection circuit, an output filter circuit, a resonance circuit, etc. The photovoltaic inverter box 2 is fixedly installed on the fixed bracket 1. There is a ventilation opening at the bottom of the photovoltaic inverter box 2. Inside the ventilation opening, there is a heat dissipation box 3 with openings at both the upper and lower ends. A heat dissipation component 4 is installed on the heat dissipation box 3. The heat dissipation component 4 includes a fan 41 and a dust-proof net 42 distributed from top to bottom. Both the fan 41 and the dust-proof net 42 are fixedly connected to the heat dissipation box 3. The surface of the dust-proof net 42 is provided with a semi-circular groove. At the center of the groove, there is a rotating shaft 43, and the rotating shaft 43 passes through and is rotatably connected to the heat dissipation box 3. A number of brush plates 44 are fixedly connected to the surface of the rotating shaft 43. At both ends of the rotating shaft 43, there are impellers 45 fixedly connected respectively. When in use, the photovoltaic inverter box 2 is installed on the fixed bracket 1 for use. The fan 41 is operated to drive external air flow into the photovoltaic inverter box 2 for heat dissipation, and the dust in the air is filtered by the groove area of the dust-proof net 42. Moreover, the external natural wind pushes the impeller 45 to rotate, so that the rotating shaft 43 drives the brush plates 44 to rotate, and automatic dust cleaning of the groove area can be realized, reducing the accumulation of dust and affecting the ventilation effect.

[0029] The heat dissipation component 4 further includes a number of thermoelectric coolers 46. The thermoelectric coolers 46 are fixedly installed on the surface of the heat dissipation box 3. The heat dissipation ends of the thermoelectric coolers 46 are located outside the heat dissipation box 3, and the refrigeration ends of the thermoelectric coolers 46 are located inside the heat dissipation box 3. By refrigerating with the thermoelectric coolers 46, the heat dissipation effect of the fan 41 is improved.

[0030] One end of the brush plate 44 away from the rotating shaft 43 fits the groove.

[0031] Embodiment 2

[0032] Comparing with Embodiment 1, please refer to Figures 4-5 As shown in the figure, the present utility model provides another implementation method. Fire prevention partitions 5 made of fireproof materials are fixedly connected to both sides of the fixed bracket 1. The upper side wall of the fire prevention partition 5 is fixedly connected to a main pipeline 6. The main pipeline 6 is connected to a delivery pump through a pipeline. The delivery pump is connected to a container filled with a fire extinguishing medium through a pipeline. The fire extinguishing medium is dry powder or carbon dioxide. The delivery pump is a powder delivery pump or a gas delivery pump. Through the fire prevention partition 5, when the photovoltaic inverter box 2 is isolated to prevent self-ignition, the spread of fire can be prevented.

[0033] A number of fire extinguishing components 7 are installed on the fire partition 5 and the main pipeline 6. The fire extinguishing component 7 includes a rotary joint 71 and two connecting joints 72. The connecting joint 72 is fixedly installed on the main pipeline 6. An electromagnetic valve 73 is installed on the connecting joint 72. The connecting joint 72 is connected with a branch pipe 74 through a flexible pipe. A number of spray nozzles 75 are installed at the bottom of the branch pipe 74. When the smoke alarm 8 detects a fire, it generates an alarm and simultaneously controls the operation of the delivery pump and the electromagnetic valve 73 in this area to open. The fire extinguishing medium is pumped by the delivery pump from the main pipeline 6 into the branch pipe 74 and sprayed out by the spray nozzles 75 to automatically extinguish the photovoltaic inverter box 2 below.

[0034] The branch pipe 74 includes two pipe bodies 741, and a connecting seat 742 is fixedly connected to the opposite side of the two pipe bodies 741.

[0035] Both ends of the branch pipe 74 are fixedly connected with sliders 76, and the sliders 76 are slidably connected with the fire partition 5.

[0036] The rotary joint 71 is fixedly installed on the main pipeline 6. A reciprocating lead screw 77 is rotatably connected inside the rotary joint 71, and the reciprocating lead screw 77 is threadedly connected with the branch pipe 74.

[0037] One end of the reciprocating lead screw 77 located inside the rotary joint 71 is fixedly connected with a number of blades 78. When the fire extinguishing medium flows inside the main pipeline 6, it drives the reciprocating lead screw 77 to rotate by pushing the blades 78, so that the branch pipe 74 reciprocates, expanding the fire extinguishing range and improving the fire extinguishing effect.

[0038] A smoke alarm 8 is fixedly connected to the top of the fixed bracket 1. The smoke alarm is electrically connected to the delivery pump and the adjacent electromagnetic valve 73.

[0039] Working principle: During use, the photovoltaic inverter box 2 is installed on the fixed bracket 1 for use. The operation of the fan 41 drives the external air flow to enter the inside of the photovoltaic inverter box 2 for heat dissipation, and the dust in the air is filtered by the groove area of the dust-proof net 42. Moreover, the external natural wind pushes the impeller 45 to rotate, so that the rotating shaft 43 drives the brush plate 44 to rotate, and the automatic dust cleaning of the groove area can be realized, reducing the accumulation of dust and affecting the ventilation effect.

[0040] When the smoke alarm 8 detects a fire, it generates an alarm and simultaneously controls the operation of the delivery pump and the electromagnetic valve 73 in this area to open. The fire extinguishing medium is pumped by the delivery pump from the main pipeline 6 into the branch pipe 74 and sprayed out by the spray nozzles 75 to automatically extinguish the photovoltaic inverter box 2 below.

[0041] When the fire extinguishing medium flows inside the main pipeline 6, it drives the reciprocating lead screw 77 to rotate by pushing the blades 78, so that the branch pipe 74 reciprocates, expanding the fire extinguishing range and improving the fire extinguishing effect.

[0042] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A solar-powered forest fire prevention device for a mountain photovoltaic power station area, comprising a plurality of fixed brackets (1) and photovoltaic inverter boxes (2) evenly distributed at equal intervals, characterized in that: The photovoltaic inverter box (2) is fixedly installed on the fixed bracket (1). A ventilation opening is provided at the bottom of the photovoltaic inverter box (2). A heat dissipation box (3) with openings at both the upper and lower ends is fixedly connected inside the ventilation opening. A heat dissipation component (4) is installed on the heat dissipation box (3). The heat dissipation component (4) includes a blower (41) and a dust-proof net (42) distributed from top to bottom. Both the blower (41) and the dust-proof net (42) are fixedly connected to the heat dissipation box (3). A semi-circular groove is provided on the surface of the dust-proof net (42). A rotating shaft (43) is installed at the center of the groove, and the rotating shaft (43) penetrates and is rotatably connected to the heat dissipation box (3). A plurality of brush plates (44) are fixedly connected to the surface of the rotating shaft (43). Impellers (45) are fixedly connected to both ends of the rotating shaft (43).

2. The forest fire prevention device for mountain photovoltaic power generation areas powered by solar energy according to claim 1, characterized in that: The heat dissipation component (4) further includes a plurality of thermoelectric coolers (46). The thermoelectric coolers (46) are fixedly installed on the surface of the heat dissipation box (3). The heat dissipation ends of the thermoelectric coolers (46) are located outside the heat dissipation box (3), and the refrigeration ends of the thermoelectric coolers (46) are located inside the heat dissipation box (3).

3. The forest fire prevention device for mountain photovoltaic power generation areas powered by solar energy according to claim 1, wherein: One end of the brush plate (44) away from the rotating shaft (43) fits the groove.

4. The forest fire prevention device for mountain photovoltaic power generation areas powered by solar energy according to claim 1, characterized in that: Fireproof partitions (5) made of fireproof materials are fixedly connected to both sides of the fixed bracket (1). A main pipe (6) is fixedly connected to the upper side wall of the fireproof partition (5). The main pipe (6) is connected to a delivery pump through a pipe. The delivery pump is connected to a container filled with a fire extinguishing medium through a pipe.

5. The solar-powered forest fire prevention device for mountain photovoltaic power generation areas according to claim 4, characterized in that: A plurality of fire extinguishing components (7) are installed on the fireproof partition (5) and the main pipe (6). The fire extinguishing component (7) includes a rotary joint (71) and two connecting joints (72). The connecting joints (72) are fixedly installed on the main pipe (6). Solenoid valves (73) are installed on the connecting joints (72). The connecting joints (72) are connected to a branch pipe (74) through a flexible pipe. A plurality of nozzles (75) are installed at the bottom of the branch pipe (74).

6. The forest fire prevention device for a mountain photovoltaic power generation area powered by solar energy according to claim 5, characterized in that: The branch pipe (74) includes two pipe bodies (741). A connecting seat (742) is fixedly connected to the opposite side of the two pipe bodies (741).

7. The solar-powered forest fire prevention device for mountain photovoltaic power generation areas according to claim 5, wherein: Sliders (76) are fixedly connected to both ends of the branch pipe (74), and the sliders (76) are slidably connected to the fireproof partition (5).

8. The forest fire prevention device for a mountain photovoltaic power generation area powered by solar energy according to claim 5, wherein: The rotary joint (71) is fixedly installed on the main pipe (6). A reciprocating lead screw (77) is rotatably connected inside the rotary joint (71), and the reciprocating lead screw (77) is threadedly connected to the branch pipe (74).

9. The solar-powered forest fire prevention device for mountain photovoltaic power generation areas according to claim 8, characterized in that: A plurality of blades (78) are fixedly connected to one end of the reciprocating lead screw (77) located inside the rotary joint (71).

10. The forest fire prevention device for mountain photovoltaic power generation areas powered by solar energy according to claim 1, characterized in that: A smoke alarm (8) is fixedly connected to the top of the fixed bracket (1).

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