CN210246616U

CN210246616U - Protection mechanism for photovoltaic grid-connected inverter

Info

Publication number: CN210246616U
Application number: CN201921347547.3U
Authority: CN
Inventors: Yun Xiao; 肖云; Weiming Huang; 黄伟明; Tianfu Li; 李天福
Original assignee: Guangdong Yue Jia Solar Energy Co ltd
Current assignee: Guangdong Yue Jia Solar Energy Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-04-03
Anticipated expiration: 2029-08-16

Abstract

The utility model discloses a protection mechanism for a photovoltaic grid-connected inverter, which comprises a rectangular cover, a dust cleaning component and a metal box body, wherein the surface of the metal box body is provided with a box door, the lower end of the surface of the metal box body is provided with a strip-shaped air outlet, the lower end of the side edge of the metal box body is provided with a motor, the side edge of the metal box body is positioned above the motor and is fixed with a liquid storage box, and the middle of the liquid storage box is provided with a semiconductor refrigerating sheet. The use is portable.

Description

Protection mechanism for photovoltaic grid-connected inverter

Technical Field

The utility model belongs to the technical field of the dc-to-ac converter protection machanism, concretely relates to protection machanism for photovoltaic grid-connected inverter.

Background

The inverter is a DC-to-AC transformer, which is actually a voltage inversion process with the converter. The converter converts the alternating voltage of the power grid into stable 12V direct current for output, and the inverter converts the 12V direct current voltage output by the Adapter into high-frequency high-voltage alternating current; both parts also employ a relatively versatile Pulse Width Modulation (PWM) technique. The core part of the inverter is a PWM integrated controller, UC3842 is used by an Adapter, and a TL5001 chip is adopted by the inverter. The working voltage range of the TL5001 is 3.6-40V, and an error amplifier, a regulator, an oscillator, a PWM generator with dead zone control, a low-voltage protection circuit, a short-circuit protection circuit and the like are arranged in the TL 5001.

The prior art has the following problems: the protection mechanism for the existing photovoltaic grid-connected inverter has the problem that dust is inconvenient to clean a filter screen when in use, and the protection mechanism can be cleaned only by taking down the device, so that the protection mechanism is inconvenient to use and maintain.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a protection machanism for photovoltaic grid-connected inverter has simple structure, and the dust removal is convenient, uses handy characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a protection machanism for grid-connected photovoltaic inverter, includes rectangle cover, dust removal subassembly and metal box, the surface of metal box is provided with the chamber door, the surperficial lower extreme of metal box is provided with the bar air outlet, the motor is installed to the side lower extreme of metal box, the side of metal box is located the top of motor and is fixed with the liquid reserve tank, the centre of liquid reserve tank is provided with the semiconductor refrigeration piece, the metal box is kept away from one side of chamber door and is installed the circulating pump, the upper end of metal box is fixed with the rectangle cover, the surface all around of rectangle cover is provided with the dust removal subassembly.

Preferably, the dust removal subassembly includes fresh air inlet, collecting vat, sealed balladeur train, spacing slide bar, reset spring, air intake, filter screen, clearance brush and regulation pole, wherein, the outside of rectangle cover is provided with the fresh air inlet, the inside of rectangle cover is provided with the air intake, the inside last lower extreme that is close to the air intake of rectangle cover all is provided with spacing slide bar, the fixed surface of spacing slide bar has sealed balladeur train, the centre of sealed balladeur train is provided with the filter screen, the surface that spacing slide bar is located between sealed balladeur train and the rectangle cover is provided with reset spring, the upper end spout of rectangle cover is fixed with the regulation pole, the lower extreme of adjusting the pole is close to one side with the filter screen and installs the clearance brush, the lower extreme slip of rectangle.

Preferably, the air inlet hole and the rectangular cover are fixedly mounted in a buckled mode, and the surface of the air inlet hole and the surface of the rectangular cover are flush.

Preferably, the collecting groove is located right below the filter screen and is in sliding connection with the rectangular cover clamping groove.

Preferably, the cleaning brush is always in contact with the surface of the filter screen.

Preferably, the sealing carriage is attached to the surface of the rectangular cover, and the return spring is in an expanded state in a natural state.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses set up the setting of dust cleaning component in the rectangle cover, the air passes the fresh air inlet, is filtered by the filter screen again, carries into metal box from the air intake, uses the filter screen surface area for a long time to collect the dust, through removing the regulation pole, makes the cleaning brush slide and cleans the deposition on filter screen surface, and the deposition falls into to concentrate in the collecting vat and collects, avoids the dust to pile up and causes the jam, need not to take out and clears up again, reduces the amount of labour, and it is portable to use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the dust removing assembly of the present invention.

In the figure: 1. a rectangular cover; 2. a dust removal assembly; 21. an air inlet hole; 22. collecting tank; 23. a seal carriage; 24. a limiting slide bar; 25. a return spring; 26. an air inlet; 27. a filter screen; 28. cleaning a brush; 29. adjusting a rod; 3. a box door; 4. a strip-shaped air outlet; 5. a motor; 6. a semiconductor refrigeration sheet; 7. a circulation pump; 8. a liquid storage tank; 9. a metal box body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides the following technical solutions: the utility model provides a protection machanism for grid-connected inverter of photovoltaic, including rectangular cover 1, dust cleaning component 2 and metal box 9, the surface of metal box 9 is provided with chamber door 3, the surperficial lower extreme of metal box 9 is provided with bar air outlet 4, motor 5 is installed to the side lower extreme of metal box 9, the top that the side of metal box 9 is located motor 5 is fixed with liquid reserve tank 8, the centre of liquid reserve tank 8 is provided with semiconductor refrigeration piece 6, metal box 9 is kept away from one side of chamber door 3 and is installed circulating pump 7, the upper end of metal box 9 is fixed with rectangular cover 1, rectangular cover 1 surface all around is provided with dust cleaning component 2.

The dust cleaning component 2 comprises an air inlet 21, a collecting groove 22, a sealing sliding frame 23, a limiting sliding rod 24, a return spring 25, an air inlet 26, a filter screen 27, a cleaning brush 28 and an adjusting rod 29, wherein the air inlet 21 is arranged on the outer side of the rectangular cover 1, the air inlet 21 is fixedly buckled with the rectangular cover 1 for convenient installation, the air inlet 21 is flush with the surface of the rectangular cover 1, the air inlet 26 is arranged inside the rectangular cover 1, the limiting sliding rods 24 are arranged at the upper end and the lower end of the rectangular cover 1 close to the air inlet 26, the sealing sliding frame 23 is fixed on the surface of the limiting sliding rod 24, the filter screen 27 is arranged in the middle of the sealing sliding frame 23, the return spring 25 is arranged on the surface of the limiting sliding rod 24 between the sealing sliding frame 23 and the rectangular cover 1 for convenient dust filtration and collection, the sealing sliding frame 23 is attached to the surface of the rectangular cover 1, the upper end spout of rectangle cover 1 is fixed with adjusts the pole 29, and the lower extreme of adjusting pole 29 is close to one side with filter screen 27 and installs cleaning brush 28, and for the convenience deashing, cleaning brush 28 contacts with filter screen 27's surface all the time, and the lower extreme of rectangle cover 1 slides and is fixed with collecting vat 22, and for the convenience of carrying out the dust collection, collecting vat 22 is located filter screen 27 under, collecting vat 22 and rectangle cover 1 draw-in groove sliding connection.

The utility model discloses a theory of operation and use flow: when the utility model is used, the metal box body 9 is arranged at a proper position, the box door 3 is opened, the inverter for photovoltaic grid connection is arranged in the metal box body 9, the exhaust fan in the metal box body 9 pumps the outside air into the metal box body 9 through the air inlet hole 21, the air passes through the air inlet hole 21 and is filtered by the filter screen 27, the air is conveyed into the metal box body 9 from the air inlet 26, the dust is accumulated on the surface of the filter screen 27 after long-time use, by moving the adjusting rod 29, the cleaning brush 28 is slid to clean the accumulated dust on the surface of the filter screen 27, the accumulated dust falls into the collecting tank 22 for centralized collection, so that the dust accumulation is avoided to cause blockage, the clearance is portable simultaneously, need not to take out and clears up again, and semiconductor refrigeration piece 6 cools down gas through the heat exchanger effect in the metal box 9 under the effect of circulating pump 7 to liquid reserve tank 8, and gas is discharged from bar air outlet 4, effectively cools down and protects the dc-to-ac converter.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a protection machanism for grid-connected PV inverter, includes rectangle cover (1), dust cleaning assembly (2) and metal box (9), its characterized in that: the surface of metal box (9) is provided with chamber door (3), the surperficial lower extreme of metal box (9) is provided with bar air outlet (4), motor (5) are installed to the side lower extreme of metal box (9), the top that the side of metal box (9) is located motor (5) is fixed with liquid reserve tank (8), the centre of liquid reserve tank (8) is provided with semiconductor refrigeration piece (6), circulating pump (7) are installed to one side that chamber door (3) were kept away from in metal box (9), the upper end of metal box (9) is fixed with rectangle cover (1), the surface all around of rectangle cover (1) is provided with dust cleaning assembly (2).

2. The protection mechanism for the grid-connected photovoltaic inverter according to claim 1, characterized in that: the dust cleaning component (2) comprises an air inlet hole (21), a collecting groove (22), a sealing sliding frame (23), a limiting sliding rod (24), a reset spring (25), an air inlet (26), a filter screen (27), a cleaning brush (28) and an adjusting rod (29), wherein the air inlet hole (21) is formed in the outer side of the rectangular cover (1), the air inlet (26) is formed in the rectangular cover (1), the limiting sliding rod (24) is arranged at the upper end and the lower end, close to the air inlet (26), of the rectangular cover (1), the sealing sliding frame (23) is fixed on the surface of the limiting sliding rod (24), the filter screen (27) is arranged in the middle of the sealing sliding frame (23), the reset spring (25) is arranged on the surface, located between the sealing sliding frame (23) and the rectangular cover (1), of the adjusting rod (29) is fixed on the upper end sliding groove of the rectangular cover (1), the lower end of the adjusting rod (29) and one side, close to the filter screen (27), of the filter screen are provided with a cleaning brush (28), and the lower end of the rectangular cover (1) is fixed with a collecting tank (22) in a sliding mode.

3. The protection mechanism for the grid-connected photovoltaic inverter according to claim 2, characterized in that: the air inlet hole (21) and the rectangular cover (1) are fixedly mounted in a buckling mode, and the surface of the air inlet hole (21) and the surface of the rectangular cover (1) are flush.

4. The protection mechanism for the grid-connected photovoltaic inverter according to claim 2, characterized in that: the collecting groove (22) is located right below the filter screen (27), and the collecting groove (22) is connected with the clamping groove of the rectangular cover (1) in a sliding mode.

5. The protection mechanism for the grid-connected photovoltaic inverter according to claim 2, characterized in that: the cleaning brush (28) is always in contact with the surface of the filter screen (27).

6. The protection mechanism for the grid-connected photovoltaic inverter according to claim 2, characterized in that: the sealing sliding frame (23) is attached to the surface of the rectangular cover (1), and the return spring (25) is in an expansion state in a natural state.