A fireproof shading device for household photovoltaics

Abstract

The utility model discloses a fireproof shading device for household photovoltaics, belonging to the technical field of household photovoltaics of new energy, comprising a protection box, a flexible fireproof shading curtain, a latch lock piece assembly and a fireproof rope; the flexible fireproof shading curtain is bent and folded and arranged inside the protection box, the protection box has a detachable side panel, the latch lock piece assembly is fixedly mounted on the top cover of the protection box and the surface of the detachable side panel, and is used to fix the detachable side panel so that the protection box forms a sealing structure, the fireproof rope is connected to the bottom end of the latch lock piece assembly, when in use, the fireproof rope pulls the latch lock piece assembly downward to open the detachable side panel, and the flexible fireproof shading curtain rolls down and unfolds along the household photovoltaic slope. When a household photovoltaic power station is on fire, the utility model isolates sunlight from irradiating the photovoltaic assembly, thereby stopping the DC side power generation of the photovoltaic assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy household photovoltaics, and in particular to a fireproof shading device for household photovoltaics. Background Art

[0002] With the vigorous development of the new energy industry in recent years, household photovoltaic power stations have become an important part of home energy solutions with their clean, environmentally friendly and sustainable characteristics. However, as the installed capacity of household photovoltaics has steadily increased, safety issues during operation have become increasingly prominent.

[0003] In a photovoltaic system, due to the superposition of component voltages, a string of component circuits often has a DC high voltage of about 900V to 1500V. When the cable connection in the DC circuit is aging, the connector is faulty, the model is mismatched, there is a virtual connection, or when two conductors of opposite polarity are very close to each other, and the insulation between the two wires fails, a DC arc is likely to be generated under the action of high voltage. This DC arc is very likely to generate open flames under the action of high voltage, thus causing a fire. For household photovoltaic power stations, once a fire occurs, the situation is particularly complicated and dangerous. Due to the characteristics of the photovoltaic components themselves, as long as there is light outside, the photovoltaic components will always be in a power generation state. Regardless of whether it is isolated from the external circuit, the entire system is still energized and will always generate DC arcs, posing a great threat to firefighting and rescue work.

[0004] Therefore, how to effectively prevent and respond to fire risks in household photovoltaic power stations is an urgent problem to be solved in the new energy industry. Summary of the invention

[0005] The utility model aims to provide a fireproof shading device for household photovoltaics, which can isolate sunlight from irradiating photovoltaic components when a household photovoltaic power station catches fire, thereby stopping the direct current side power generation of the photovoltaic components.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A fireproof shading device for household photovoltaics, comprising: a protection box, a flexible fireproof shading curtain, a latch lock assembly and a fireproof rope;

[0008] The flexible fireproof blackout curtain is bent and folded and arranged inside the protection box. The protection box has a detachable side panel. The latch lock piece assembly is fixedly installed on the top cover of the protection box and the surface of the detachable side panel, and is used to fix the detachable side panel to form a sealing structure for the protection box. The fireproof rope is connected to the bottom end of the latch lock piece assembly. When in use, the fireproof rope pulls the latch lock piece assembly downward to open the detachable side panel, and then the flexible fireproof blackout curtain rolls down and unfolds along the slope of the household photovoltaic system.

[0009] In some embodiments, the latch pin lock plate assembly includes: a straight latch pin lock plate, an L-shaped latch pin lock plate and a latch pin, the straight latch pin lock plate is arranged on the top cover surface of the protection box, the L-shaped latch pin lock plate is arranged on the surface of the removable side panel, the installation positions of the straight latch pin lock plate and the L-shaped latch pin lock plate correspond, and the latch pin passes through the straight latch pin lock plate and the L-shaped latch pin lock plate.

[0010] In some embodiments, the straight latch lock piece is installed in the middle of the surface of the protection box top cover and protrudes outward, and the L-shaped latch lock piece is installed in the middle of the surface of the detachable side panel and protrudes outward in the same direction as the straight latch lock piece.

[0011] In some embodiments, the latch is a corrosion-resistant metal latch.

[0012] In some embodiments, a rubber tube is further included, and the rubber tube is disposed at the upper end of the latch.

[0013] In some embodiments, a steel base is further included, and the steel base is arranged on the bottom outer surface of the protection box. When in use, the protection box is installed on the purlin of the household photovoltaic support through the steel base.

[0014] In some embodiments, the steel base is a C-shaped steel base.

[0015] In some embodiments, a metal ring is further included, which is arranged at the bottom end of the latch lock plate assembly, and the fireproof rope is connected to the metal ring.

[0016] In some embodiments, the protection box is a rectangular parallelepiped structure, and the length of the protection box is equal to the length of the purlin of the household photovoltaic support.

[0017] In some embodiments, the unfolded area of ​​the flexible fireproof sunshade curtain is greater than or equal to the surface area of ​​the household photovoltaic assembly exposed to sunlight.

[0018] Compared with the prior art, the utility model has the following effects:

[0019] The utility model provides a fireproof shading device for household photovoltaics, including a protection box, a flexible fireproof shading curtain, a latch lock piece assembly, a fireproof rope, and a metal ring; the flexible fireproof shading curtain is bent and folded and arranged inside the protection box, the protection box has a detachable side panel, the latch lock piece assembly is fixedly installed on the top cover of the protection box and the surface of the detachable side panel, and is used to fix the detachable side panel so that the protection box forms a sealing structure, the metal ring is arranged at the bottom end of the latch lock piece assembly, and the fireproof rope is connected to the metal ring. When an electrical fire occurs during the day, the utility model can pull out the latch lock piece assembly by pulling the fireproof rope, and put down the detachable side panel, so that the bent flexible fireproof shading curtain naturally rolls down and unfolds along the slope of the household photovoltaic bracket, and can isolate the photovoltaic component from sunlight after being fully spread out, so that the DC side system is powered off, and the safety of firefighting repair personnel is guaranteed.

[0020] Furthermore, the latch lock plate assembly of the utility model respectively arranges the straight latch lock plate and the L-shaped latch lock plate on the surface of the top cover of the protection box and the surface of the removable side panel. The two are used in combination to provide a stable and uniform clamping force for the fireproof shading device, increase the safety and reliability of the overall structure, and make the installation and disassembly processes quick.

[0021] Furthermore, the utility model provides a rubber tube at the upper end of the latch, which can further fix the latch and make the sealing structure of the protection box more stable when it is not opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a fire-proof shading device for household photovoltaics provided in Example 1 when it is opened;

[0023] Figure 2 A schematic diagram of a fireproof shading device for household photovoltaics provided in Example 1 when it is sealed;

[0024] Figure 3 A schematic diagram of the installation of a fire-proof shading device for household photovoltaics provided in Example 1.

[0025] In the figure, 1. protection box; 2. flexible fireproof blackout curtain; 3. straight latch lock plate; 4. L-shaped latch lock plate; 5. latch; 6. rubber tube; 7. fireproof rope; 8. metal ring; 9. steel base. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described, and the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be illustrative rather than restrictive in nature.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed or operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0031] Embodiment 1

[0032] For household photovoltaic power stations, once a fire occurs, the situation is particularly complicated and dangerous. Due to the characteristics of photovoltaic modules themselves, as long as there is light from the outside, the photovoltaic modules will always be in a power generation state. Regardless of whether it is isolated from the external circuit, the entire system is still energized and will continue to generate DC arcs, posing a great threat to firefighting and rescue work.

[0033] Therefore, in order to effectively deal with the fire in the household photovoltaic power station during the day, when the household photovoltaic power station catches fire, the sunlight is blocked from irradiating the photovoltaic module, thereby stopping the DC side power generation of the photovoltaic module. This embodiment provides a fireproof shading device for household photovoltaics, including: a protection box 1, a flexible fireproof shading curtain 2, a straight latch lock piece 3, an L-shaped latch lock piece 4, a latch 5, a rubber tube 6, a fireproof rope 7, a metal ring 8 and a steel base 9;

[0034] like Figure 1 As shown, after the flexible fireproof shading curtain 2 is rolled up, one end is fixedly set inside the protection box 1. The protection box 1 itself is provided with a detachable side panel. Preferably, the detachable side panel is hinged to the bottom plate of the protection box 1. The flexible fireproof shading curtain 2 is a shading curtain with a fire resistance time of ≥1h and a light transmittance of 0. The protection box 1 is a rectangular parallelepiped structure, and its length is equal to the length of the bracket purlin of the household photovoltaic system. The unfolding area of ​​the flexible fireproof shading curtain 2 is equal to the surface area of ​​the household photovoltaic module exposed to sunlight, which can ensure that the flexible fireproof shading curtain 2 can completely isolate the household photovoltaic module from sunlight after being fully unfolded, and ensure that the DC side system is powered off.

[0035] The straight latch lock piece 3 is fixedly arranged at the middle of the top cover surface of the protection box 1 and protrudes in the direction in which the detachable side panel is opened. The L-shaped latch lock piece 4 is fixedly arranged on the surface of the detachable side panel and is consistent with the protruding direction of the straight latch lock piece 3.

[0036] like Figure 2 As shown, when the detachable side panel is closed, the protruding parts of the straight latch lock piece 3 and the L-shaped latch lock piece 4 overlap, and a latch 5 is used to penetrate the latch holes on the straight latch lock piece 3 and the L-shaped latch lock piece. Preferably, the latch 5 is an anti-corrosion metal latch; a rubber tube 6 is arranged at the upper end of the latch 5 to simply fix the latch 5, a metal ring 8 is installed at the lower end of the latch 5, and a fireproof rope 7 is connected to the metal ring 8;

[0037] like Figure 3 As shown, the protection box 1 is installed on the purlin of the household photovoltaic support through the steel base 9. The installation position is located on the extended support inclined beam, and space is reserved for lowering the removable side panels. After the removable side panels are lowered, they must be flush with the slope of the photovoltaic module. Preferably, the steel base 9 adopts a C-shaped steel base.

[0038] The specific installation and workflow of the above-mentioned fireproof shading device are as follows:

[0039] Step 1: Before installation, roll up the flexible fireproof blackout curtain 2 and put it into the protection box 1, then close the detachable side panel, insert the anti-corrosion metal plug and fix it with the rubber tube 6 at the upper end, and connect the fireproof rope 7 to the metal ring 8 at the lower end of the anti-corrosion metal plug;

[0040] Step 2: Install the protection box 1 on the extended bracket inclined beam through the C-shaped steel base. After the detachable side panels are lowered, they should be flush with the slope of the photovoltaic module;

[0041] Step 3: When an electrical fire occurs during the day, pull the fire rope 7 to pull out the pin 5 downward, lower the detachable side panel, and the rolled-up flexible fireproof blackout curtain 2 will naturally roll down along the slope and unfold. After being fully unfolded, it will isolate the photovoltaic components from sunlight, so that the DC side system is powered off, ensuring the safety of personnel during firefighting repairs.

[0042] Embodiment 2

[0043] This embodiment provides a fireproof shading device for household photovoltaics, comprising a protection box 1, a flexible fireproof shading curtain 2, a latch lock assembly, a fireproof rope 7 and a metal ring 8;

[0044] The flexible fireproof blackout curtain 2 is bent and folded and arranged inside the protection box 1. The protection box 1 has a detachable side panel. The latch lock piece assembly is fixedly installed on the top cover of the protection box 1 and the surface of the detachable side panel, and is used to fix the detachable side panel so that the protection box 1 forms a sealing structure. The metal ring 8 is arranged at the bottom end of the latch lock piece assembly, and the fireproof rope 7 is connected to the metal ring 8; preferably, the latch lock piece assembly is made of anti-corrosion metal material;

[0045] The protection box adopts a rectangular structure, and its length is the same as the length of the household photovoltaic support purlin. The unfolding area of ​​the flexible fireproof blackout curtain 2 is larger than the surface area of ​​the household photovoltaic components exposed to sunlight. It can ensure that the flexible fireproof blackout curtain 2 can completely isolate the household photovoltaic components from sunlight after being fully unfolded, ensuring that the DC side system is powered off.

[0046] In this embodiment, the protection box 1 is directly installed on the bracket purlin of the household photovoltaic system. The installation position is located on the extended bracket diagonal beam, and a space is reserved for lowering the detachable side panels. After the detachable side panels are lowered, they must be flush with the slope of the photovoltaic module. When an electrical fire occurs during the day, the fire rope 7 is pulled to release the fixed state of the latch lock assembly, and the detachable side panels are lowered. The rolled-up flexible fireproof blackout curtain 2 naturally rolls down along the slope and unfolds.

[0047] This embodiment arranges the fireproof shading device on a household photovoltaic module bracket with a certain slope. When opened, the flexible fireproof shading curtain can be naturally unfolded along the slope to block sunlight from irradiating the photovoltaic module, thereby stopping the DC side of the photovoltaic module from generating electricity. In the event of a fire, the arc caused by the DC side is prevented, and the safety of firefighters is ensured.

[0048] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only examples in all respects, not the only ones, and all changes within the scope of the present invention or equivalent to the scope of the present invention are included in the present invention.

Claims

1. A fireproof shading device for household photovoltaics, characterized in that: include: A protection box (1), a flexible fireproof blackout curtain (2), a latch lock assembly and a fireproof rope (7); The flexible fireproof blackout curtain (2) is bent and folded and arranged inside the protection box (1). The protection box (1) has a detachable side panel. The latch lock piece assembly is fixedly mounted on the top cover of the protection box (1) and the surface of the detachable side panel, and is used to fix the detachable side panel so that the protection box (1) forms a sealed structure. The fireproof rope (7) is connected to the bottom end of the latch lock piece assembly. When in use, the fireproof rope (7) pulls the latch lock piece assembly downward to open the detachable side panel, and then the flexible fireproof blackout curtain (2) rolls down and unfolds along the household photovoltaic slope.

2. A fireproof shading device for household photovoltaics according to claim 1, characterized in that: The latch pin lock piece assembly comprises: a straight latch pin lock piece (3), an L-shaped latch pin lock piece (4) and a latch pin (5); the straight latch pin lock piece (3) is arranged on the top cover surface of the protection box (1); the L-shaped latch pin lock piece (4) is arranged on the surface of the detachable side plate; the straight latch pin lock piece (3) and the L-shaped latch pin lock piece (4) are installed at corresponding positions; and the latch pin (5) passes through the straight latch pin lock piece (3) and the L-shaped latch pin lock piece (4).

3. A fireproof shading device for household photovoltaics according to claim 2, characterized in that: The straight latch lock piece (3) is installed in the middle of the surface of the top cover of the protection box and protrudes outwards, and the L-shaped latch lock piece (4) is installed in the middle of the surface of the detachable side plate and protrudes outwards in the same direction as the straight latch lock piece (3).

4. A fireproof shading device for household photovoltaics according to claim 2, characterized in that: The latch (5) is made of an anti-corrosion metal latch.

5. A fireproof shading device for household photovoltaics according to claim 2, characterized in that: It also comprises a rubber tube (6), which is arranged on the upper end of the latch (5).

6. A fireproof shading device for household photovoltaics according to claim 1, characterized in that: It also comprises a steel base (9), which is arranged on the outer surface of the bottom of the protection box (1). When in use, the protection box (1) is installed on the purlin of the household photovoltaic support through the steel base (9).

7. A fireproof shading device for household photovoltaics according to claim 6, characterized in that: The steel base (9) adopts a C-shaped steel base.

8. The fireproof shading device for household photovoltaics according to claim 1, characterized in that: It also comprises a metal ring (8), which is arranged at the bottom end of the latch lock piece assembly, and a fireproof rope (7) is connected to the metal ring (8).

9. The fireproof shading device for household photovoltaics according to claim 1, characterized in that: The protection box (1) is a rectangular parallelepiped structure, and the length of the protection box (1) is equal to the length of the purlin of the household photovoltaic support.

10. The fireproof shading device for household photovoltaics according to claim 1, characterized in that: The unfolded area of ​​the flexible fireproof blackout curtain (2) is greater than or equal to the surface area of ​​the household photovoltaic assembly exposed to sunlight.

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