A noise reduction fire prevention fence for a photovoltaic energy storage device

Abstract

The utility model provides a kind of noise reduction fire prevention fence of photovoltaic energy storage equipment, including multiple improved type enclosing mechanism;Improved type enclosing mechanism includes multiple side-by-side distribution support frame, and sound-absorbing board piece is assembled between adjacent support frame;Support frame includes first I type vertical steel frame and I type angle steel frame arranged at the top of first I type vertical, and the included angle of first I type vertical steel frame and I type angle steel frame is 120-135 °;Sound-absorbing board piece includes square frame body and sound-absorbing material filled in the inside of square frame body, and square frame body includes the inner side panel close to photovoltaic energy storage equipment, and multiple honeycomb holes are opened in the inner side panel through penetration.It is designed that the included angle of first I type vertical steel frame and I type angle steel frame of improved type enclosing mechanism is 120 °-135 °, and cooperate sound-absorbing board piece;Make sound wave multiple scattering after impact, reduce the noise peak of single direction strong reflection in sensitive area (such as residential area).

Description

[Technical Field]

[0001] This utility model relates to the field of photovoltaic energy storage technology, specifically to a noise-reducing and fireproof fence for photovoltaic energy storage equipment. [Background Technology]

[0002] Currently, electricity generated by photovoltaic solar energy is stored using energy storage devices. This solves the problem of surplus electricity storage and provides electricity at night when the grid is off. However, noise problems and fires caused by overheating of energy storage devices still occur occasionally, especially in developed regions like Japan, where noise issues remain a significant concern. Existing energy storage devices commonly use vertical metal enclosures, which have the following drawbacks: Inside the vertical metal enclosure, high-frequency noise generated by the energy storage device is mainly reflected, and the noise reduction effect of the vertical metal enclosure is only about 5-7 dB; low-frequency noise generated by the energy storage device is mainly diffracted, and the noise reduction effect of the vertical metal enclosure is only about 3-5 dB; therefore, the noise reduction effect of the vertical metal enclosure is not good.

[0003] In view of this, this case involves in-depth research into the aforementioned issues, which led to the formation of this case. [Utility Model Content]

[0004] This utility model aims to solve the technical problems of poor noise reduction and poor fire resistance of existing vertical metal fences. It provides a noise-reducing and fireproof fence for photovoltaic energy storage equipment. The improved fence mechanism is designed with an angle of 120°-135° between the first type I vertical steel frame and the type I angled steel frame, and is combined with sound-absorbing panels. This allows sound waves to scatter in multiple directions after impact, reducing strong reflections in one direction and lowering the noise peak in sensitive areas (such as residential areas).

[0005] This utility model is implemented as follows: a noise-reducing and fireproof fence for photovoltaic energy storage equipment, comprising multiple improved enclosure mechanisms; the improved enclosure mechanism includes multiple side-by-side support frames, with sound-absorbing panels assembled between adjacent support frames; the support frame includes a first I-shaped vertical steel frame and an I-shaped angled steel frame located at the top of the first I-shaped vertical frame; the included angle between the first I-shaped vertical steel frame and the I-shaped angled steel frame is 120-135°; the sound-absorbing panel includes a square frame and sound-absorbing material filled inside the square frame, the square frame including an inner panel close to the photovoltaic energy storage equipment, the inner panel having multiple honeycomb holes through it.

[0006] Furthermore, the multiple honeycomb holes are arranged in a regular matrix pattern.

[0007] Furthermore, the sound-absorbing material is fireproof rock wool.

[0008] Furthermore, the fireproof rock wool includes a surface layer, a middle layer, and a bottom layer, with the surface layer installed facing the inner panel; the surface layer is basalt rock wool with a thickness of 10mm; the middle layer is aluminum silicate ceramic fiber wool with a thickness of 80mm; and the bottom layer is rock wool with a thickness of 10mm.

[0009] Furthermore, the square frame is an aluminum alloy square frame.

[0010] Furthermore, the included angle between the first type I vertical steel frame and the type I angled steel frame is 135°.

[0011] Furthermore, the number of the improved fencing mechanisms is four, and the four improved fencing mechanisms are assembled in a square enclosure.

[0012] Furthermore, it also includes two facade fencing mechanisms; the number of the improved fencing mechanisms is two, the two facade fencing mechanisms and the two improved fencing mechanisms are connected in a square structure, the two facade fencing mechanisms are distributed opposite to each other, and the two improved fencing mechanisms are distributed opposite to each other.

[0013] Furthermore, it also includes a facade enclosure mechanism; the number of the improved enclosure mechanisms is 3, with the facade enclosure mechanism and the 3 improved enclosure mechanisms connected in a square structure.

[0014] Furthermore, the facade enclosure mechanism has multiple second type I vertical steel frames arranged side by side, and adjacent second type I vertical steel frames are equipped with sound-absorbing panels.

[0015] The advantages of this utility model are as follows: The improved enclosure mechanism of the noise reduction and fireproof fence is designed with an angle of 120-135° between the first type I vertical steel frame and the type I angled steel frame, and is combined with sound-absorbing panels; this allows sound waves to scatter in multiple directions after impact, reducing strong reflections in one direction and lowering the noise peak in sensitive areas (such as residential areas); the angled structure formed by the type I angled steel frame and the sound-absorbing panels increases the length of the sound wave diffraction path, significantly improving the noise reduction effect of high-frequency sound waves and enhancing fire resistance. [Attached Image Description]

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a structural schematic diagram of the noise-reducing and fireproof fence in Example 1.

[0018] Figure 2 This is a cross-sectional view of the noise-reducing and fireproof fence in Example 1.

[0019] Figure 3 This is a schematic diagram of the installation structure of the support frame and the sound-absorbing panel in this utility model.

[0020] Figure 4This is a structural schematic diagram of the sound-absorbing panel in this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the fireproof rock wool in this utility model.

[0022] Figure 6 This is a structural schematic diagram of the noise-reducing and fireproof fence in Example 2.

[0023] Figure 7 This is a schematic diagram of the installation structure of the second type I vertical steel frame and sound-absorbing panel in the facade enclosure mechanism of Embodiment 2.

[0024] Reference numerals: Improved enclosure mechanism 100, support frame 1, first type I vertical steel frame 11, type I angled steel frame 12, chassis 13, sound-absorbing panel 2, square frame 21, inner panel 211, outer panel 212, honeycomb hole 213, fireproof rock wool 22, surface layer 221, middle layer 222, bottom layer 223, facade enclosure mechanism 200, second type I vertical steel frame 3.

Detailed Implementation Methods

[0025] To better understand the technical solution of this utility model, the technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] Please see Figures 1 to 5 As shown, this embodiment provides a noise-reducing and fireproof fence for a photovoltaic energy storage device, including multiple improved enclosure mechanisms 100 assembled together; the improved enclosure mechanism 100 includes multiple support frames 1 arranged side by side, with sound-absorbing panels 2 assembled between adjacent support frames 1; the support frame 1 includes a first I-shaped vertical steel frame 11 and an I-shaped angled steel frame 12 located at the top of the first I-shaped vertical frame; the included angle between the first I-shaped vertical steel frame 11 and the I-shaped angled steel frame 12 is 120-135°; the sound-absorbing panel 2 includes a square frame 21 and sound-absorbing material 22 filled inside the square frame 21, the square frame 21 includes an inner panel 211 close to the photovoltaic energy storage device, and the inner panel 211 has multiple honeycomb holes 213 through it.

[0028] In this embodiment, the noise-reducing and fireproof fence, the improved fence mechanism 100 is designed with an angle of 120-135° between the first I-shaped vertical steel frame 11 and the I-shaped angled steel frame 12, and is combined with the sound-absorbing panel 2; so that the sound waves are scattered in multiple directions after impact, reducing strong reflection in one direction and reducing the noise peak in sensitive areas (such as residential areas); the angled structure formed by the I-shaped angled steel frame 12 and the sound-absorbing panel 2 increases the sound wave diffraction path length, significantly improving the noise reduction effect of high-frequency sound waves and improving fire resistance.

[0029] Preferably, the sound-absorbing panel 2 can be bolted into the mounting slot of the first I-shaped vertical steel frame 11 or the I-shaped angled steel frame 12. One end of the sound-absorbing panel 2 is inserted into the mounting slot, and then bolted in place.

[0030] Preferably, the plurality of honeycomb holes 213 are arranged in a regular matrix. Due to the large number of honeycomb holes 213, sound waves are allowed to enter the sound-absorbing material, while airflow is blocked, thus impeding the sound waves and improving the sound absorption coefficient and sound absorption efficiency.

[0031] Preferably, the sound-absorbing material is fireproof rock wool 22. The fireproof rock wool 22 includes a surface layer 221, a middle layer 222, and a bottom layer 223, with the surface layer facing the inner panel 211. The surface layer is 10mm thick basalt rock wool; the middle layer is 80mm thick aluminosilicate ceramic fiber wool; and the bottom layer is 10mm thick rock wool. The fireproof rock wool is bonded to the inside of the square frame 21 with adhesive, forming a honeycomb sandwich structure, similar to sound-absorbing cloth. The fireproof rock wool + adhesive achieves A1 fire resistance, forming a heat insulation barrier when exposed to fire, delaying the spread of fire by ≥1.2 hours. The surface layer has a density of 180-200 kg / m³. 3 The basalt rock wool is 10mm thick and contains 5-8wt% silicon carbide whiskers to enhance its refractory limit; silicon carbide whiskers >8wt% cause the rock wool to become brittle, while <5wt% results in insufficient refractory resistance. The middle layer has a density of 100-120kg / m³. 3 The aluminosilicate ceramic fiber cotton, 80mm thick, is loaded with nano-titanium dioxide aerogel (pore size ≤ 20nm; sound insulation drops sharply when pore size > 20nm). The nano-titanium dioxide aerogel pores in the aluminosilicate ceramic fiber cotton increase the sound wave friction path and improve the sound absorption coefficient. The bottom layer density is 80-100kg / m³. 3 The rock wool, 10mm thick, is coated with an intumescent flame retardant (mainly ammonium polyphosphate and pentaerythritol). The surface layer of silicon carbide whiskers forms a framework, the middle layer of nano-titanium dioxide aerogel blocks heat radiation, and the bottom intumescent layer foams and seals the honeycomb pores upon contact with fire. These three elements work synergistically to significantly improve the fire resistance limit of the fire-resistant rock wool. This three-layer composite structure reduces weight by 30% compared to pure high-density rock wool, lowering the load on fences.

[0032] In this embodiment, the surface layer 221 is installed facing the inner panel 211, and the surface layer 221 uses high-density basalt wool to reflect part of the sound; the bottom layer 223 is installed facing the outer panel 212, and an intumescent flame retardant protects the metal structure; the middle layer 222 is sandwiched between the surface layer 221 and the bottom layer 223, and nano-titanium dioxide aerogel maximizes sound absorption.

[0033] During noise reduction, sound waves penetrate the honeycomb pores 213. The high-density basalt wool on the surface initially reduces noise, the nano-titanium dioxide aerogel in the middle layer absorbs most of the sound waves, and the bottom layer of rock wool absorbs some sound waves again, achieving maximum noise reduction. In the event of a fire, within 0-30 minutes, the intumescent flame retardant in the bottom layer expands and foams when heated, filling the honeycomb pores 213313 to block oxygen and insulate against high temperatures; from 30-70 minutes, the nano-titanium dioxide aerogel in the middle layer provides thermal insulation; after 70 minutes, the silicon carbide whiskers of the surface basalt wool maintain the structure and prevent collapse, protecting the overall structure of the fireproof rock wool from collapsing at high temperatures.

[0034] Preferably, the square frame 21 is an aluminum alloy square frame 21. The aluminum alloy square frame 21 is corrosion-resistant, high-strength, suitable for outdoor environments, and has a long service life. Preferably, the square frame 21 has dimensions of 500*2000*(120-128)mm. It has a height of 500mm, a length of 2000mm, a thickness of 120-128mm, and a wall thickness of 10-14mm.

[0035] Preferably, the first I-shaped vertical steel frame 11 and the I-shaped angled steel frame 12 are welded together, and the bottom of the first I-shaped vertical steel frame 11 is welded to the base plate 13. Assembly grooves are formed on both the left and right sides of the first I-shaped vertical steel frame 11 and the I-shaped angled steel frame 12 for inserting the sound-absorbing panel 2.

[0036] Preferably, the angle between the first type I vertical steel frame 11 and the type I angled steel frame 12 is 135°, that is, the angle between the type I angled steel frame 12 and the horizontal plane is 45°, which balances noise reduction efficiency and structural stability, improves high-frequency noise reduction by more than 50%, and improves low-frequency noise reduction by about 30-60%.

[0037] Preferably, the number of the improved enclosure mechanism 100 is 4, and the 4 improved enclosure mechanisms 100 are assembled in a square to form an acoustic enclosure, which can achieve 360° noise suppression for the energy storage device and significantly improve the overall noise reduction.

[0038] Preferably, the height of the improved enclosure mechanism 100 is 2.5-3.5m; the height of the I-shaped vertical steel frame is 2.0-3.0m.

[0039] Taking the square closed layout of the noise-reducing fireproof fence in this embodiment as an example, three groups of noise-reducing fireproof fences with different included angles were assembled as experimental groups, and one group of traditional upright metal fences was used as a control group. Noise reduction test and fireproof test were carried out respectively, and the data were recorded.

[0040] Noise source: Photovoltaic energy storage equipment (noise spectrum: low frequency 20-250HZ, high frequency above 4000HZ).

[0041] Test point: 1 meter outside the fence.

[0042] Fence height: 2.5 meters.

[0043] Fence length: 10 meters.

[0044] Table 1 Comparison of performance parameters between the experimental group and the control group

[0045]

[0046] in conclusion:

[0047] 1. The noise-reducing fireproof fence in this embodiment has noise reduction advantages. High-frequency noise reduction: The 135° angle improves noise reduction by 120% compared to a vertical surface (14.3dB vs 6.5dB); scattering and diffraction suppression, honeycomb 213 + fireproof rock wool efficiently absorb high-frequency sound waves. Low-frequency noise reduction: The 135° angle improves noise reduction by 86% compared to a vertical surface (7.8dB vs 4.2dB); low-frequency sound waves are longer, and the angled structure composed of the I-shaped angled steel frame 12 and the sound-absorbing panel 2 increases the diffraction path. Optimal angle: 135° > 130° > 120°, with 135° being the golden angle. Too small an angle (120°) leads to secondary sound wave reflection, while too large an angle (135°) approaches the effect of a vertical surface. Therefore, because 135° has the longest scattering path, diffraction suppression is most significant.

[0048] 2. The noise-reducing fireproof fence in this embodiment has fire-resistant advantages. The fire resistance limit of all three experimental groups reached 1.2h, far exceeding the 0.3h of traditional upright metal fences. This is due to the sealing and filling of fireproof rock wool and the thermal insulation performance of the aluminum alloy square frame 21 and the steel frame.

[0049] Example 2

[0050] Please see Figures 3 to 7 As shown, this embodiment provides a noise-reducing and fireproof fence for a photovoltaic energy storage device, including two improved fencing mechanisms 100 and two vertical fencing mechanisms 200. Each improved fencing mechanism 100 includes multiple side-by-side support frames 1, with sound-absorbing panels 2 installed between adjacent support frames 1. Each sound-absorbing panel 2 includes a square frame 21 and sound-absorbing material filled inside the square frame 21. The square frame 21 includes an inner panel 211 near the photovoltaic energy storage device, with multiple honeycomb holes 213 extending through the inner panel 211. The two vertical fencing mechanisms 200 and the two improved fencing mechanisms 100 are connected in a square structure, with the two vertical fencing mechanisms 200 and the two improved fencing mechanisms 100 being distributed opposite each other.

[0051] Preferably, the sound-absorbing panel 2 can be bolted into the mounting slot of the first I-shaped vertical steel frame 11 or the I-shaped angled steel frame 12. One end of the sound-absorbing panel 2 is inserted into the mounting slot, and then bolted in place.

[0052] Preferably, the plurality of the honeycomb holes 213 are arranged in a regular matrix.

[0053] Preferably, the sound-absorbing material is fireproof rock wool 22. The fireproof rock wool 22 includes a surface layer 221, a middle layer 222, and a bottom layer 223, with the surface layer installed facing the inner panel 211; the surface layer is basalt rock wool with a thickness of 10mm; the middle layer is aluminum silicate ceramic fiber wool with a thickness of 80mm; and the bottom layer is rock wool with a thickness of 10mm.

[0054] Preferably, the square frame 21 is an aluminum alloy square frame 21.

[0055] Preferably, the support frame 1 includes a first I-shaped vertical steel frame 11 and an I-shaped angled steel frame 12 disposed at the top of the first I-shaped vertical frame; the included angle between the first I-shaped vertical steel frame 11 and the I-shaped angled steel frame 12 is 120-135°. The first I-shaped vertical steel frame 11 and the I-shaped angled steel frame 12 are welded together, and a base plate is welded to the bottom of the first I-shaped vertical steel frame 11. Assembly grooves are formed on both the left and right sides of the first I-shaped vertical steel frame 11 and the I-shaped angled steel frame 12 for inserting the sound-absorbing panel 2.

[0056] Preferably, the included angle between the first type I vertical steel frame 11 and the type I angled steel frame 12 is 135°.

[0057] Preferably, the facade enclosure mechanism comprises more than 200 parallel second type I vertical steel frames 3, with sound-absorbing panels 2 mounted on adjacent second type I vertical steel frames 3. Assembly slots are formed on the left and right sides of the second type I vertical steel frames 3 for inserting the sound-absorbing panels 2.

[0058] In another specific implementation, the number of the facade enclosure mechanism 200 can also be one; the number of the improved enclosure mechanism 100 is three, with one facade enclosure mechanism 200 and three improved enclosure mechanisms 100 connected in a square structure, and the facade enclosure mechanism 200 is set near a non-sensory area (such as a non-residential area).

[0059] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A noise-reducing and fireproof fence for photovoltaic energy storage equipment, characterized in that: The device includes multiple improved enclosure mechanisms; each improved enclosure mechanism includes multiple side-by-side support frames, with sound-absorbing panels installed between adjacent support frames; each support frame includes a first I-shaped vertical steel frame and an I-shaped angled steel frame located at the top of the first I-shaped vertical frame; the included angle between the first I-shaped vertical steel frame and the I-shaped angled steel frame is 120-135°; each sound-absorbing panel includes a square frame and sound-absorbing material filled inside the square frame, the square frame including an inner panel near the photovoltaic energy storage device, the inner panel having multiple honeycomb holes extending through it.

2. The noise-reducing and fireproof fence for photovoltaic energy storage equipment as described in claim 1, characterized in that: The multiple honeycomb holes are arranged in a regular matrix.

3. The noise-reducing and fireproof fence for photovoltaic energy storage equipment as described in claim 2, characterized in that: The sound-absorbing material is fireproof rock wool.

4. The noise-reducing and fireproof fence for photovoltaic energy storage equipment as described in claim 3, characterized in that: The fireproof rock wool includes a surface layer, a middle layer, and a bottom layer, with the surface layer installed facing the inner panel; the surface layer is 10mm thick basalt rock wool; the middle layer is 80mm thick aluminum silicate ceramic fiber wool; and the bottom layer is 10mm thick rock wool.

5. The noise-reducing and fireproof fence for photovoltaic energy storage equipment as described in claim 4, characterized in that: The square frame is an aluminum alloy square frame.

6. The noise-reducing and fireproof fence for photovoltaic energy storage equipment as described in any one of claims 1-5, characterized in that: The included angle between the first type I vertical steel frame and the type I angled steel frame is 135°.

7. The noise-reducing and fireproof fence for photovoltaic energy storage equipment as described in claim 6, characterized in that: The number of the improved fencing mechanisms is 4, and the 4 improved fencing mechanisms are assembled in a square enclosure.

8. The noise-reducing and fireproof fence for photovoltaic energy storage equipment as described in claim 6, characterized in that: It also includes two facade fencing mechanisms; the number of the improved fencing mechanisms is two, the two facade fencing mechanisms and the two improved fencing mechanisms are connected in a square structure, the two facade fencing mechanisms are distributed opposite to each other, and the two improved fencing mechanisms are distributed opposite to each other.

9. The noise-reducing and fireproof fence for photovoltaic energy storage equipment as described in claim 6, characterized in that: It also includes one facade enclosure mechanism; the number of the improved enclosure mechanisms is three, with one facade enclosure mechanism and three improved enclosure mechanisms connected in a square structure.

10. The noise-reducing and fireproof fence for photovoltaic energy storage equipment as described in claim 8 or 9, characterized in that: The facade enclosure mechanism consists of multiple parallel second type I vertical steel frames, with sound-absorbing panels mounted on adjacent second type I vertical steel frames.

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