Photovoltaic box transformer air inlet device with dust falling function

Abstract

The utility model relates to a kind of photovoltaic box transformer air inlet device with dust fall function in the technical field of photovoltaic box transformer, including cabinet, the cabinet side wall is equipped with opening, the opening outside is equipped with air guide component, it is characterized by: the air guide component is by the multiple air guide units of sequentially being set from bottom to top, every the air guide unit includes outer air inlet, air guide channel and inner air inlet, external gas sequentially enters cabinet interior through outer air inlet, air guide channel and inner air inlet;The air guide channel outside is equipped with expansion chamber, for reducing airflow pressure and forming vortex to realize wind sand settlement;The utility model passes through the expansion chamber of air guide unit outside setting, after high-speed airflow enters, because section expands and air pressure drops sharply, vortex flow field is formed, wind sand particle motion trajectory is changed, and cross-over overlap occurs with streamline, effectively dissipates wind sand particle kinetic energy, accelerates the settlement, and then reduce the wind sand particle into cabinet.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic transformer substation technology, and in particular to a photovoltaic transformer substation air intake device with dust reduction function. Background Technology

[0002] A photovoltaic box-type transformer, also known as a photovoltaic power station box-type transformer, is one of the key pieces of equipment in a photovoltaic power generation system. It is mainly used to convert the direct current generated by photovoltaic modules into alternating current suitable for grid transmission or local use.

[0003] Existing photovoltaic transformer boxes generally use grilles as air inlets. However, in remote Gobi Desert areas (where photovoltaic resources are abundant, but the natural environment is harsh and sandstorms are frequent), such air inlets can cause sand and dust to enter the box, causing certain impacts.

[0004] To address this, we designed a photovoltaic transformer substation air intake device with dust reduction function. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model discloses a photovoltaic transformer box air intake device with dust reduction function.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A photovoltaic transformer box-type air intake device with dust reduction function includes a box body, the side wall of the box body is provided with an opening, and an air guide component is provided on the outside of the opening. The air guide component is characterized in that: the air guide component is composed of a plurality of air guide units arranged sequentially from bottom to top, each air guide unit including an external air inlet, an air guide channel and an internal air inlet, and external air enters the interior of the box body sequentially through the external air inlet, the air guide channel and the internal air inlet.

[0008] An expansion cavity is provided on the outside of the air guide channel to reduce the air pressure and form a vortex to achieve sand and dust settling.

[0009] Furthermore, the bottom of the expansion cavity is provided with a storage cavity for collecting sand and dust.

[0010] Furthermore, the bottom of the storage cavity is equipped with an openable and closable plate valve for discharging sand and dust from the storage cavity.

[0011] Furthermore, a movable baffle is provided on the inner side of the air guide channel corresponding to the expansion cavity, which is used to shift under the impact of airflow to reduce the cross-section of the airflow.

[0012] Furthermore, the baffle is a horizontal plate, the inner end of which is slidably connected to the inner side of the air guide channel.

[0013] Furthermore, the baffle is a flip plate, with its inner end rotatably connected to the inner side of the air guide channel, and its outer end having a notch;

[0014] The inner side of the air guide channel is provided with a support member below the flip plate to support the flip plate and keep it in a horizontal state.

[0015] Furthermore, the baffle is a V-shaped plate, with its upper end of the opening rotatably connected to the inside of the air guide channel and its lower end movably connected to the inside of the air guide channel.

[0016] The two side plates at the closed end of the V-shaped plate are hinged to each other.

[0017] Furthermore, the air guiding unit includes:

[0018] The front and rear side panels are set opposite each other;

[0019] The top slab, from the outside to the inside, consists of an upper horizontal section and an upper inclined section;

[0020] The inner side panel forms an inner air inlet with the upper inclined section;

[0021] The base plate, from the outside to the inside, includes a lower horizontal section and a lower inclined section, wherein the lower inclined section is connected to the lower end of the inner side plate;

[0022] The outermost plate is connected to the upper horizontal section at its upper end;

[0023] The middle plate is located at the bottom between the inner and outer side plates;

[0024] The connecting plate is inclinedly positioned between the outer plate and the middle plate.

[0025] Furthermore, the inner end of the connecting plate is connected to the top of the intermediate plate, and the front and rear side plates, the upper horizontal section, the outer side plate, and the connecting plate together form an expansion cavity.

[0026] Furthermore, the inner end of the connecting plate is detachably connected to the middle or bottom of the intermediate plate, and the front and rear side plates, the upper horizontal section, the outer side plate, the intermediate plate and the connecting plate together form an expansion cavity and a storage cavity.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] 1. The expansion cavity set on the outside of the air guide unit allows the high-speed airflow to enter and the air pressure to drop sharply due to the expansion of the cross section, forming a vortex flow field, which changes the trajectory of the sand particles and intersects and overlaps with the streamlines, effectively dissipating the kinetic energy of the sand particles, accelerating the settling, and thus reducing the number of sand particles entering the box.

[0029] 2. The air guide channel is equipped with movable baffles, which automatically reduce the cross-section of the airflow under strong wind impact, limit the air intake, and thus reduce the amount of sand particles entering the box.

[0030] 3. The storage chamber extending from the bottom of the expansion chamber integrates the function of collecting settled sand and dust. Combined with the bottom openable and closable plate valve, it realizes the function of sand discharge, which greatly reduces the frequency of equipment maintenance.

[0031] 4. The air guide unit adopts a modular design, and the multi-layer stacked air guide units can be increased or decreased as needed. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this utility model;

[0033] Figure 2 This is a cross-sectional view of the present invention;

[0034] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0035] Figure 4 This is a schematic diagram of the second structure of the air guiding unit in this utility model;

[0036] Figure 5 This is a schematic diagram of the third structure of the air guiding unit in this utility model.

[0037] In the diagram: 1. Housing; 2. Air guide assembly; 21. Air guide unit; 211. Front and rear side panels; 212. Top panel; 2101. External air inlet; 2121. Upper horizontal section; 2122. Upper inclined section; 213. Inner side panel; 214. Bottom panel; 2141. Lower horizontal section; 2142. Lower inclined section; 215. Outer side panel; 216. Middle panel; 217. Connecting plate; 2102. Air guide channel; 2103. Internal air inlet; 2104. Expansion chamber; 2105. Storage chamber; 2106. Plate valve; 2107. Baffle. Detailed Implementation

[0038] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0039] Example 1, in conjunction with Appendix Figure 1-25. A photovoltaic transformer substation air intake device with dust reduction function, comprising:

[0040] Box 1: An opening is made in the side wall for air to enter the box 1;

[0041] Air guide assembly 2: installed on the outside of the opening, consisting of multiple air guide units 21 stacked from bottom to top;

[0042] Air guide unit 21 core structure

[0043] External air inlet 2101: Located at the bottom of the outer side of the air guide unit 21;

[0044] Internal air inlet 2103: Located on the top inner side of the air guide unit 21, leading to the interior of the housing.

[0045] Air duct 2102: connects the external air inlet 2101 and the internal air inlet 2103;

[0046] Expansion chamber 2104: Located outside the air guide channel 2102, it reduces airflow pressure by suddenly expanding the cross section, forming vortices to cause sand and dust to settle; that is, after the airflow enters the expansion zone, the air pressure decreases due to the increased cross section, and the sand and dust particles can also generate small vortices with the airflow in the expansion chamber 2104, making the movement trajectory of the sand and dust particles irregular, the streamlines intersect and overlap, and more kinetic energy is dissipated, further accelerating the dust settling.

[0047] In one possible implementation, the air guide unit 21 includes:

[0048] The front and rear side panels 211 are set opposite to each other;

[0049] Top plate 212: Connects the upper horizontal section 2121 and the upper inclined section 2122 sequentially from the outside to the inside;

[0050] Specifically, the inner side of the upper inclined segment 2122 is higher than the outer side, or in other words, the height of the upper inclined segment 2122 increases sequentially from the outside to the inside.

[0051] Inner side plate 213: forms an inner air inlet 2103 with the upper inclined section 2122; that is, there is a gap between the upper end of the inner side plate 213 and the inner end of the upper inclined section 2122, and this gap is the inner air inlet 2103.

[0052] Base plate 214: From the outside to the inside, it is connected to the lower horizontal section 2141 and the lower inclined section 2142. The lower inclined section 2142 is connected to the lower end of the inner side plate 213.

[0053] Specifically, the structure of the bottom plate 214 is the same as that of the top plate 212.

[0054] As needed, the bottom plate 214 of the upper air guide unit 21 and the top plate 212 of the lower air guide unit 21 in two adjacent air guide units 21 are the same component.

[0055] Outer side plate 215: The upper end is connected to the upper horizontal section 2121; the outer side plate 215 and the upper horizontal section 2121 are integrally formed.

[0056] In other words, the bottom plate 214 of the upper air guide unit 21 and the outer side plate 215 of the lower air guide unit 21 are a single integral component in two adjacent air guide units 21.

[0057] Intermediate plate 216: Located at the bottom between the inner plate 213 and the outer plate 215;

[0058] Connecting plate 217: inclined setting, with its inner end fixed to the top of the middle plate 216.

[0059] At this time, the front and rear side plates 211, the upper horizontal section 2121, the outer side plate 215 and the connecting plate 217 together form the expansion cavity 2104.

[0060] Specifically, the outer side of the connecting plate 217 is higher than the inner side, or in other words, the height of the connecting plate 217 decreases from the outside to the inside; that is, the settled sand particles can be guided by the connecting plate 217 and then discharged through the downward inclined section 2142.

[0061] Example 2, in conjunction with Appendix Figure 3-4 Based on Embodiment 1, the installation method of the connecting plate 217 is improved so that a storage cavity 2105 is formed at the bottom of the expansion cavity 2104.

[0062] The inner end of the connecting plate 217 is detachably fixed to the middle or bottom of the intermediate plate 216. At this time, the front and rear side plates 211, the upper horizontal section 2121, the outer side plate 215, the intermediate plate 216 and the connecting plate 217 together form the expansion cavity 2104 and the storage cavity 2105, realizing the integration of expansion sedimentation and sand and dust collection.

[0063] The front and rear side panels 211, the middle panel 216, and the connecting panel 217 together form the storage cavity 2105.

[0064] At this time, the connecting plate 217 is the plate valve 2106.

[0065] In one possible implementation, the connecting plate 217 is a rigid plate, with its inner end detachably fixed to the intermediate plate 216 via a connector, and its outer end hinged to the bottom of the outer plate 215; that is, by releasing the connection at the inner end of the connecting plate 217, the sand particles in the collection cavity 2105 can be discharged.

[0066] In one possible implementation, the connecting plate 217 is an elastic plate, with its inner end detachably fixed to the middle plate 216 by means of abutment, and its outer end fixedly installed at the bottom of the outer plate 215; that is, when the weight of the sand particles in the receiving cavity 2105 increases to a certain value, the connecting plate 217 deforms, and a gap is generated between the inner end of the connecting plate 217 and the middle plate 216, so that the sand particles in the receiving cavity 2105 are discharged.

[0067] In one possible implementation, the connecting plate 217 is a rigid plate, with its inner end detachably fixed to the intermediate plate 216 by means of abutment, and its outer end fixedly installed to the bottom of the outer plate 215 by means of a pin and spring; that is, when the weight of the sand particles in the storage cavity 2105 increases to a certain value, the spring deforms and the connecting plate 217 rotates. At this time, a gap is generated between the inner end of the connecting plate 217 and the intermediate plate 216, so that the sand particles in the storage cavity 2105 are discharged.

[0068] Example 3, based on Example 1, combined with Appendix Figure 3-5 A movable baffle 2107 is added to the inner side of the air guide channel 2102 at the position corresponding to the expansion cavity 2104. That is, when the airflow entering the air guide channel 2102 is a strong airflow, the baffle 2107 is moved down by the airflow impact to reduce the cross section of the airflow, that is, reduce the gas entering the box 1, and thus reduce the sand particles entering the box 1.

[0069] In one possible implementation, combined with the appendix Figure 3 The baffle 2107 is a horizontal plate, and its inner end is connected to the inner side of the air guide channel 2102 by sliding up and down through a groove; when the airflow impacts, it moves upward, reducing the channel cross-section and limiting the air intake.

[0070] Specifically, the inner end of the baffle 2107 is provided with a sliding part on the front and rear sides, and the front and rear side plates 211 are provided with a sliding groove for the sliding part to be inserted and to slide up and down.

[0071] In one possible implementation, combined with the appendix Figure 5 The baffle 2107 is a flip plate, with its inner end rotatably connected to the inner side of the air guide channel 2102; the outer end of the flip plate is provided with a ventilation notch, and a support is provided below to maintain a horizontal state; when the airflow increases, the flip plate is raised to limit the air intake.

[0072] Specifically, the inner end of the baffle 2107 is rotatably connected to the front and rear side plates 211 via a pin.

[0073] In one possible implementation, combined with the appendix Figure 4The baffle 2107 is a V-shaped plate. The upper part of the open end is rotatably connected to the inside of the air guide channel 2102; the lower part of the open end slides up and down and is rotatably connected through a sliding groove; the two side plates of the closed end are hinged. When the airflow is enhanced, the V-shaped angle changes, reducing the channel cross-section and limiting the air intake.

[0074] In some other embodiments, a filter screen is provided between the top of the inner side plate 213 and the upper inclined section 2122.

[0075] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A photovoltaic transformer substation air intake device with dust reduction function, comprising a housing (1), wherein the side wall of the housing (1) is provided with an opening, and an air guide assembly (2) is provided on the outside of the opening, characterized in that: The air guide assembly (2) is composed of multiple air guide units (21) arranged sequentially from bottom to top. Each air guide unit (21) includes an external air inlet (2101), an air guide channel (2102), and an internal air inlet (2103). External air enters the interior of the box (1) sequentially through the external air inlet (2101), the air guide channel (2102), and the internal air inlet (2103). An expansion cavity (2104) is provided on the outside of the air guide channel (2102) to reduce the air pressure and form a vortex to achieve sand and dust settling.

2. The photovoltaic transformer substation air intake device with dust reduction function according to claim 1, characterized in that: The bottom of the expansion cavity (2104) is provided with a storage cavity (2105) for collecting sand and dust.

3. The photovoltaic transformer substation air intake device with dust reduction function according to claim 2, characterized in that: The bottom of the storage cavity (2105) is provided with an openable and closable plate valve (2106) for discharging sand and dust from the storage cavity (2105).

4. The photovoltaic transformer substation air intake device with dust reduction function according to claim 1, characterized in that: The air guide channel (2102) is provided with a movable baffle (2107) at the position corresponding to the expansion cavity (2104) on the inner side, which is used to move under the impact of airflow to reduce the cross section through which the airflow passes.

5. The photovoltaic transformer substation air intake device with dust reduction function according to claim 4, characterized in that: The baffle (2107) is a horizontal plate, and its inner end is slidably connected to the inner side of the air guide channel (2102).

6. The photovoltaic transformer substation air intake device with dust reduction function according to claim 4, characterized in that: The baffle (2107) is a flip plate, the inner end of which is rotatably connected to the inner side of the air guide channel (2102), and the outer end is provided with a notch; The air guide channel (2102) is provided with a support member on the inner side corresponding to the lower part of the flip plate, which is used to support the flip plate to keep it in a horizontal state.

7. The photovoltaic transformer substation air intake device with dust reduction function according to claim 4, characterized in that: The baffle (2107) is a V-shaped plate, with its upper end of the opening rotatably connected to the inside of the air guide channel (2102) and its lower end movably connected to the inside of the air guide channel (2102). The two side plates at the closed end of the V-shaped plate are hinged to each other.

8. The photovoltaic transformer substation air intake device with dust reduction function according to claim 1, characterized in that: The air guide unit (21) includes: The front and rear side panels (211) are set opposite to each other. The top plate (212) consists of an upper horizontal section (2121) and an upper inclined section (2122) from the outside to the inside. An inner air inlet (2103) is formed between the inner side plate (213) and the upper inclined section (2122). The base plate (214) includes a lower horizontal section (2141) and a lower inclined section (2142) from the outside to the inside. The lower inclined section (2142) is connected to the lower end of the inner side plate (213). The outer side plate (215) is connected at its upper end to the upper horizontal section (2121); The middle plate (216) is located at the bottom between the inner plate (213) and the outer plate (215); The connecting plate (217) is inclinedly disposed between the outer plate (215) and the middle plate (216).

9. A photovoltaic transformer substation air intake device with dust reduction function according to claim 8, characterized in that: The inner end of the connecting plate (217) is connected to the top of the intermediate plate (216), and the front and rear side plates (211), the upper horizontal section (2121), the outer side plate (215) and the connecting plate (217) together form an expansion cavity (2104).

10. A photovoltaic transformer substation air intake device with dust reduction function according to claim 8, characterized in that: The inner end of the connecting plate (217) is detachably connected to the middle or bottom of the intermediate plate (216). The front and rear side plates (211), the upper horizontal section (2121), the outer side plate (215), the intermediate plate (216) and the connecting plate (217) together form the expansion cavity (2104) and the storage cavity (2105).

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