CN205544332U - Three -phase grid -connected inverter LCL wave filter - Google Patents
Three -phase grid -connected inverter LCL wave filter Download PDFInfo
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- CN205544332U CN205544332U CN201620315883.XU CN201620315883U CN205544332U CN 205544332 U CN205544332 U CN 205544332U CN 201620315883 U CN201620315883 U CN 201620315883U CN 205544332 U CN205544332 U CN 205544332U
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Abstract
The utility model discloses a three -phase grid -connected inverter LCL wave filter, including shell and inner shell, both ends all are equipped with the wiring mouth about the shell, four ends of the upper surface of shell all leave the air inlet through -hole, the side bottom both ends of shell all are equipped with the air -out through -hole, the one end of air inlet through -hole runs through the inner shell, and extends to the inside of inner shell, the inboard fixedly connected with reinforcing plate of inner shell, the inboard fixed insulation board that is equipped with of reinforcing plate, not only can prevent through steel wire mesh sheet and filtration membrane inside the granule entering casing of air, but also can prevent external destruction to the fan, the life of shell has been prolonged, not only can strengthen the hardness of casing, can also play a fine insulating effect, not only can carry out effectual protection to electrical components, and can prevent and touch electric phenomena and take place, and three -phase grid -connected inverter LCL wave filter's life has been improved, economy and practicality.
Description
Technical field
This utility model relates to electrical equipment technical field, is specially a kind of three-phase grid-connected inverter LCL filter.
Background technology
nullAlong with the day by day exhausted of whole world fossil energy and the continuous enhancing of mankind's environmental consciousness，Solar electrical energy generation cause with photovoltaic as core has had development at full speed in recent years，Photovoltaic power generation equipment mainly has independently-powered and two kinds of working methods of generating electricity by way of merging two or more grid systems，Conventional photovoltaic generating equipment uses independently-powered mode mostly，And with family with in the majority with small system，It is vulnerable to the impact in time and season，Progress and the development of control theory along with Power Electronic Technique，Generate electricity by way of merging two or more grid systems and have become as the development trend of photovoltaic generation，Combining inverter is the core component of photovoltaic parallel in system，Its performance directly affects the stability of power quality and grid-connected system，Therefore，Parallel network reverse technology and key equipment become emphasis and the focus of research，At present，Three-phase photovoltaic grid-connected inverting device exist major defect be output electric current the most powerful when，Easily produce the strongest heat，If these heats are discharged not in time or lower the temperature，It is easy to the electronic component in three-phase photovoltaic grid-connected inverting device is caused damage，And insulating for three-phase photovoltaic grid-connected inverting device is also an important step，Simultaneously，Electronic component in three-phase photovoltaic grid-connected inverting device is under the effect by external force，It is very easy to damage，To this，We provide a kind of three-phase grid-connected inverter LCL filter.
Utility model content
The purpose of this utility model is to provide a kind of three-phase grid-connected inverter LCL filter, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model following technical scheme of offer: a kind of three-phase grid-connected inverter LCL filter, including shell and inner shell, the two ends, left and right of described shell are equipped with connection jaws, four ends of the upper surface of described shell all leave air intake through hole, the side bottom two ends of described shell are equipped with air outlet hole, inner shell is run through in one end of described air intake through hole, and extend to the inside of inner shell, the interior forward end of described air intake through hole is provided with steel fabric sheet, the inside middle-end of described air intake through hole is provided with filter membrane, and the interior lower end of described air intake through hole is provided with air inlet fan；
The inner side of described shell is fixedly connected with one end of reinforcement, the other end of described reinforcement is fixed on the outside of inner shell, air outlet is all left in the left and right sides of described inner shell, it is provided with air duct between described shell and inner shell, one end of described air duct is connected with air outlet, and the other end of described air duct is connected with air outlet hole, and the inside of described air duct is provided with air-out fan, the inner side of described inner shell is fixedly connected with reinforcing plate, and the inner side of described reinforcing plate is fixed with insulation board.
Preferably, the inside of described air outlet hole is provided with steel fabric sheet, and steel fabric sheet is is flexibly connected with air outlet hole and air intake through hole.
Preferably, described air outlet hole and air outlet are positioned at same level height, and air outlet hole and air outlet are four.
nullCompared with prior art，The beneficial effects of the utility model are: this three-phase grid-connected inverter LCL filter，By the air intake through hole being provided with and air outlet hole，And by air inlet fan and the cooperating of air-out fan between air intake through hole and air outlet hole，Can be at inner shell and the storing tank being internally formed an air of shell，So it is possible not only to extraneous air to bring into the inside of housing，But also the hot-air of enclosure interior can be taken out of，Such that it is able to effectively cool down for enclosure interior and lower the temperature，The granule being possible not only to prevent air by steel fabric sheet and filter membrane enters enclosure interior，But also it is possible to prevent the extraneous destruction for fan，Extend the service life of shell，Pass through insulation board、Reinforcement and the setting of reinforcing plate，It is possible not only to strengthen the hardness of housing，May also operate as a good insulating effect，It is possible not only to electric elements are effectively protected，And be possible to prevent to occur electric shock phenomenon to occur，And also improve the service life of three-phase grid-connected inverter LCL filter，Economical and practical.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is the connection diagram of shell of the present utility model and inner shell；
Fig. 3 is the schematic internal view of air intake through hole of the present utility model.
In figure: 1 shell, 11 connection jaws, 2 air intake through holes, 21 steel fabric sheets, 22 filter membranes, 23 air inlet fan, 3 air outlet holes, 4 air ducts, 5 air-out fans, 6 inner shells, 61 air outlets, 7 reinforcing plates, 8 insulation boards.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1-3, a kind of technical scheme of this utility model offer: a kind of three-phase grid-connected inverter LCL filter, including shell 1 and inner shell 6, the two ends, left and right of described shell 1 are equipped with connection jaws 11, four ends of the upper surface of described shell 1 all leave air intake through hole 2, the side bottom two ends of described shell 1 are equipped with air outlet hole 3, inner shell 6 is run through in one end of described air intake through hole 2, and extend to the inside of inner shell 6, the interior forward end of described air intake through hole 2 is provided with steel fabric sheet 21, the inside middle-end of described air intake through hole 2 is provided with filter membrane 22, the interior lower end of described air intake through hole 2 is provided with air inlet fan 23；The harmful substance and the granule that are so possible not only to prevent in air enter into enclosure interior, but also are possible to prevent external force for the destruction of fan, strengthen the using effect of shell；
The inner side of described shell 1 is fixedly connected with one end of reinforcement 9, the other end of described reinforcement 9 is fixed on the outside of inner shell 6, air outlet 61 is all left in the left and right sides of described inner shell 6, it is provided with air duct 4 between described shell 1 and inner shell 6, one end of described air duct 4 is connected with air outlet 61, the other end of described air duct 4 is connected with air outlet hole 3, the inside of described air outlet hole 3 is provided with steel fabric sheet 21, and steel fabric sheet 21 is is flexibly connected with air outlet hole 3 and air intake through hole 2, described air outlet hole 3 and air outlet 61 are positioned at same level height, and air outlet hole 3 and air outlet 61 are four, the inside of described air duct 4 is provided with air-out fan 5, the inner side of described inner shell 6 is fixedly connected with reinforcing plate 7, the inner side of described reinforcing plate 7 is fixed with insulation board 8.
Operation principle: brought into the inside of inner shell 6 by the air that air inlet fan 23 is extraneous, the heat two that the inside of inner shell 6 is too high can be alleviated, can be the hot-air band of the inside of inner shell 6 to the outside of shell 1 by air-out fan 5, thus realize the inner-outer circulation of air, arrive the effect of cooling, effectively can carry out, for three-phase grid-connected inverter LCL filter, the process insulated by reinforcing plate 7, reinforcement 9 and insulation board 8, and be possible to prevent external force for the destruction of the electric elements of its inside.
Embodiment the most of the present utility model, for the ordinary skill in the art, being appreciated that in the case of without departing from principle of the present utility model and spirit and these embodiments can carry out multiple change, revise, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (3)
- null1. a three-phase grid-connected inverter LCL filter，Including shell (1) and inner shell (6)，The two ends, left and right of described shell (1) are equipped with connection jaws (11)，It is characterized in that: four ends of the upper surface of described shell (1) all leave air intake through hole (2)，The side bottom two ends of described shell (1) are equipped with air outlet hole (3)，Inner shell (6) is run through in one end of described air intake through hole (2)，And extend to the inside of inner shell (6)，The interior forward end of described air intake through hole (2) is provided with steel fabric sheet (21)，The inside middle-end of described air intake through hole (2) is provided with filter membrane (22)，The interior lower end of described air intake through hole (2) is provided with air inlet fan (23)，The inner side of described shell (1) is fixedly connected with one end of reinforcement (9)，The other end of described reinforcement (9) is fixed on the outside of inner shell (6)，Air outlet (61) is all left in the left and right sides of described inner shell (6)，Air duct (4) it is provided with between described shell (1) and inner shell (6)，One end of described air duct (4) is connected with air outlet (61)，The other end of described air duct (4) is connected with air outlet hole (3)，The inside of described air duct (4) is provided with air-out fan (5)，The inner side of described inner shell (6) is fixedly connected with reinforcing plate (7)，The inner side of described reinforcing plate (7) is fixed with insulation board (8).
- A kind of three-phase grid-connected inverter LCL filter the most according to claim 1, it is characterized in that: the inside of described air outlet hole (3) is provided with steel fabric sheet (21), and steel fabric sheet (21) is is flexibly connected with air outlet hole (3) and air intake through hole (2).
- A kind of three-phase grid-connected inverter LCL filter the most according to claim 1, it is characterised in that: described air outlet hole (3) and air outlet (61) are positioned at same level height, and air outlet hole (3) and air outlet (61) are four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620315883.XU CN205544332U (en) | 2016-04-16 | 2016-04-16 | Three -phase grid -connected inverter LCL wave filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620315883.XU CN205544332U (en) | 2016-04-16 | 2016-04-16 | Three -phase grid -connected inverter LCL wave filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205544332U true CN205544332U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620315883.XU Expired - Fee Related CN205544332U (en) | 2016-04-16 | 2016-04-16 | Three -phase grid -connected inverter LCL wave filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN205544332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114080127A (en) * | 2021-11-17 | 2022-02-22 | 江西百盈高新技术股份有限公司 | Pure sine wave inverter with multiple protection mechanisms |
-
2016
- 2016-04-16 CN CN201620315883.XU patent/CN205544332U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114080127A (en) * | 2021-11-17 | 2022-02-22 | 江西百盈高新技术股份有限公司 | Pure sine wave inverter with multiple protection mechanisms |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170416 |