CN220553922U

CN220553922U - Three-level photovoltaic inverter

Info

Publication number: CN220553922U
Application number: CN202322205330.1U
Authority: CN
Inventors: 江华; 肖建根
Original assignee: Nanjing Oulu Electric Corp ltd
Current assignee: Nanjing Oulu Electric Corp ltd
Priority date: 2023-08-16
Filing date: 2023-08-16
Publication date: 2024-03-01
Anticipated expiration: 2033-08-16

Abstract

The utility model discloses a three-level photovoltaic inverter which comprises a base and an inverter body, wherein one side of the base, which is close to the inverter body, is provided with a storage groove, a connecting block is fixed on the back surface of the inverter body, one end of the connecting block is slidably extended into the storage groove, two movable plates are slidably connected onto the inner wall of the storage groove, the two movable plates are respectively positioned on two sides of the connecting block, clamping grooves are respectively arranged on two sides of the connecting block, clamping blocks are slidably inserted onto the inner wall of the clamping grooves, one end of each clamping block penetrates through the clamping grooves and is fixedly connected with the corresponding movable plate, a bidirectional screw rod is rotatably connected to the inner bottom of the storage groove, a connecting groove is formed in the top of the storage groove, and the upper end of each bidirectional screw rod penetrates through the two movable plates and is rotatably connected with the top of the connecting groove. According to the utility model, through the arrangement of the adjusting mechanism, the disassembly flow of the inverter is simplified, the disassembly and assembly operation of a user is facilitated, and the practicability and convenience are improved.

Description

Three-level photovoltaic inverter

Technical Field

The utility model relates to the technical field of inverters, in particular to a three-level photovoltaic inverter.

Background

With the rapid development of the related technology, the continuous improvement of the conversion efficiency and the gradual reduction of the use cost, the domestic photovoltaic industry is vigorous. When converting solar energy into electric energy, the three-level inverter is more suitable for high-capacity and high-voltage frequency conversion occasions, and has the following advantages: the switching device can obtain better waveforms under lower frequency, and has relatively low switching loss, high efficiency, small electromagnetic interference of the circuit and the like.

At present, the outdoor three-level photovoltaic inverter is generally fixed through a bracket and bolts, and the indoor three-level photovoltaic inverter is generally fixed on a wall through bolts, so that the bolts are required to be unscrewed in sequence for disassembly operation in the disassembly or maintenance and overhaul process, the process is complicated, the efficiency is low, and convenience is required to be improved.

Disclosure of Invention

The utility model aims to solve the problems that in the process of disassembly or maintenance, bolts are required to be unscrewed in sequence for disassembly operation, the flow is complicated, the efficiency is low, and convenience is required to be improved.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a three-level photovoltaic inverter, includes base and dc-to-ac converter body, one side that the base is close to the dc-to-ac converter body is equipped with puts the thing groove, the back fixed connection piece of dc-to-ac converter body, the one end of connecting block slides and extends to put the thing inslot, sliding connection has two fly leaves on the inner wall of putting the thing groove, two the fly leaves are located the both sides of connecting block respectively, the both sides of connecting block all are equipped with the draw-in groove, the slip is inserted on the inner wall of draw-in groove and is equipped with the fixture block, the one end of fixture block runs through the draw-in groove and with fly leaf fixed connection, it is connected with bi-directional screw to put the rotation in the thing groove, bi-directional screw's upper end runs through two fly leaves and rotates with the roof in the connecting groove and is connected, be threaded connection between bi-directional screw and the fly leaf, be equipped with adjustment mechanism in the connecting groove.

Preferably, the adjusting mechanism comprises a worm wheel fixedly sleeved at the upper end of the bidirectional screw rod, a worm meshed with the worm wheel is arranged in the storage groove, one end of the worm is rotationally connected with the inner wall of the connecting groove, the other end of the worm penetrates through the base and is fixedly connected with a knob, and the worm is rotationally connected with the base.

Preferably, one side of the base, which is close to the inverter body, is provided with four positioning grooves in rectangular distribution, positioning rods are inserted on the inner walls of the positioning grooves in a sliding manner, and one ends of the positioning rods penetrate through the positioning grooves and are fixedly connected with the inverter body.

Preferably, a guide rod is arranged between the two movable plates, and two ends of the guide rod respectively penetrate through the two movable plates in a sliding manner and are fixedly connected with the inner two sides of the storage groove.

Preferably, grooves are formed in two ends of the movable plate, balls are connected in the grooves in a rolling mode, and parts of the balls penetrate through the grooves.

Preferably, four bolts in rectangular distribution are inserted into one side, close to the inverter body, of the base, one end of each bolt penetrates through the base, and the bolts are in threaded connection with the base.

The beneficial effects are that:

1. two movable plates are moved through the knob, the worm wheel and the bidirectional screw, clamping and fixing or loosening of the connecting block are realized through the arrangement of the movable plates matched with the clamping blocks, and further, the position fixing and loosening operation of the inverter body are realized, so that the assembly and disassembly are convenient, the maintenance and overhaul operation is carried out, and the convenience in use is improved;

2. the resistance of the movable plate during movement can be reduced through the arrangement of the balls, the movable plate can be kept to move linearly through the arrangement of the guide rods, and the inverter body is prevented from being inclined after being installed through the arrangement of the positioning rods and the positioning grooves; according to the utility model, through the arrangement of the adjusting mechanism, the disassembly flow of the inverter is simplified, the disassembly and assembly operation of a user is facilitated, and the practicability and convenience are improved.

Drawings

Fig. 1 is a schematic structural diagram of a three-level photovoltaic inverter according to the present utility model;

fig. 2 is a schematic diagram of the internal structure of a base of a three-level photovoltaic inverter according to the present utility model;

fig. 3 is a schematic diagram of a structure of a three-level photovoltaic inverter according to the present utility model.

In the figure: the power generation device comprises a 1-base, a 2-inverter body, a 3-movable plate, a 4-bolt, 5-balls, a 6-knob, a 7-guide rod, an 8-positioning rod, a 9-bidirectional screw, a 10-connecting block, an 11-worm, a 12-worm wheel and a 13-clamping block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-3, a three-level photovoltaic inverter comprises a base 1 and an inverter body 2, wherein four rectangular distributed positioning grooves are formed in one side, close to the inverter body 2, of the base 1, positioning rods 8 are inserted into the inner walls of the positioning grooves in a sliding manner and used for preventing the inverter body 2 from being inclined, one ends of the positioning rods 8 penetrate through the positioning grooves and are fixedly connected with the inverter body 2, four rectangular distributed bolts 4 are inserted into one side, close to the inverter body 2, of the base 1 and used for facilitating a user to install and fix the base 1, one ends of the bolts 4 penetrate through the base 1, and threaded connection is achieved between the bolts 4 and the base 1;

in this embodiment, a storage groove is formed on one side of the base 1, which is close to the inverter body 2, a connection block 10 is fixed on the back of the inverter body 2, for preventing the inverter body 2 from loosening, one end of the connection block 10 extends into the storage groove in a sliding manner, two movable plates 3 are connected to the inner wall of the storage groove in a sliding manner, and used for driving a clamping block 13 to move, a guide rod 7 is arranged between the two movable plates 3, and used for keeping the movable plates 3 to move linearly, two ends of the guide rod 7 respectively penetrate through the two movable plates 3 in a sliding manner and are fixedly connected with two inner sides of the storage groove, grooves are formed at two ends of the movable plates 3, balls 5 are connected in the grooves in a rolling manner, and used for reducing resistance when the movable plates 3 move, and part of the balls 5 penetrates through the grooves;

in this embodiment, the two movable plates 3 are respectively located at two sides of the connecting block 10, two sides of the connecting block 10 are respectively provided with a clamping groove, a clamping block 13 is inserted on the inner wall of the clamping groove in a sliding manner, and is used for preventing the connecting block 10 from loosening, and one end of the clamping block 13 penetrates through the clamping groove and is fixedly connected with the movable plate 3; the inner bottom of the storage tank is rotationally connected with a bidirectional screw rod 9 for driving the movable plates 3 to move, the top of the storage tank is provided with a connecting tank, the upper ends of the bidirectional screw rods 9 penetrate through the two movable plates 3 and are rotationally connected with the top of the connecting tank, and the bidirectional screw rods 9 are in threaded connection with the movable plates 3;

in the embodiment, an adjusting mechanism is arranged in the connecting groove, the adjusting mechanism comprises a worm wheel 12 fixedly sleeved at the upper end of the bidirectional screw rod 9 and used for driving the bidirectional screw rod 9 to rotate, a worm 11 meshed with the worm wheel 12 is arranged in the object placing groove and used for driving the worm wheel 12 to rotate, one end of the worm 11 is rotationally connected with the inner wall of the connecting groove, the other end of the worm 11 penetrates through the base 1 and is fixedly connected with a knob 6 and used for facilitating a user to rotate the worm 11, and the worm 11 is rotationally connected with the base 1;

in this embodiment, when first using, firstly install base 1 in the assigned position, then insert the connecting block 10 at inverter body 2 back in putting the thing groove, then corotation knob 6 drives worm 11 rotatory, drive bi-directional screw 9 rotatory through the effect of worm 11 and worm wheel 12 meshing, bi-directional screw 9 drives two fly leaves 3 through the effect of screw thread meshing and moves towards opposite direction, drive fixture block 13 through fly leaf 3 and remove to the draw-in groove, thereby carry out the centre gripping fixedly to connecting block 10, prevent that connecting block 10 from loosening, and then realize inverter body 2 installation operation, when dismantling, the reversal knob 6 makes two fly leaves 3 to the direction of being in the back of the body (principle is above, here is not repeated), drive fixture block 13 and break away from in the draw-in groove through fly leaf 3, at this moment, alright pull down inverter body 2.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a three-level photovoltaic inverter, includes base (1) and dc-to-ac converter body (2), its characterized in that: the utility model discloses a device for fixing a DC-DC converter, including base (1), connecting block (10), connecting block (9), clamping block (13) are equipped with to one side that base (1) is close to dc-DC converter body (2), the back fixed connection piece (10) of dc-DC converter body (2), the one end of connecting block (10) slides and extends to put the thing inslot, sliding connection has two fly leaves (3) on the inner wall of putting the thing groove, two fly leaves (3) are located the both sides of connecting block (10) respectively, the both sides of connecting block (10) all are equipped with the draw-in groove, sliding insertion is equipped with fixture block (13) on the inner wall of draw-in groove, the one end of fixture block (13) runs through the draw-in groove and with fly leaf (3) fixed connection, it is connected with bi-directional screw (9) to put the bottom in the thing groove, bi-directional screw (9) upper end runs through two fly leaves (3) and is connected with the rotation of spread groove internal top, be threaded connection between bi-directional screw (9) and the fly leaf (3), be equipped with adjustment mechanism in the connecting groove.

2. A three level photovoltaic inverter according to claim 1, characterized in that: the adjusting mechanism comprises a worm wheel (12) fixedly sleeved at the upper end of a bidirectional screw rod (9), a worm (11) meshed with the worm wheel (12) is arranged in the storage groove, one end of the worm (11) is rotationally connected with the inner wall of the connecting groove, the other end of the worm (11) penetrates through the base (1) and is fixedly connected with a knob (6), and the worm (11) is rotationally connected with the base (1).

3. A three level photovoltaic inverter according to claim 1, characterized in that: the utility model discloses a high-voltage power inverter, including base (1), inverter body (2), locating lever (8) are inserted in the sliding on the inner wall of locating slot, one end of locating lever (8) runs through the locating slot and with inverter body (2) fixed connection to be equipped with four rectangular distribution's constant head tank on one side of base (1) being close to inverter body (2).

4. A three level photovoltaic inverter according to claim 1, characterized in that: a guide rod (7) is arranged between the two movable plates (3), and two ends of the guide rod (7) respectively penetrate through the two movable plates (3) in a sliding mode and are fixedly connected with the inner two sides of the storage groove.

5. A three level photovoltaic inverter according to claim 1, characterized in that: grooves are formed in two ends of the movable plate (3), balls (5) are connected in the grooves in a rolling mode, and parts of the balls (5) penetrate through the grooves.

6. A three level photovoltaic inverter according to claim 1, characterized in that: four rectangular bolts (4) are inserted into one side, close to the inverter body (2), of the base (1), one end of each bolt (4) penetrates through the base (1), and the bolts (4) are in threaded connection with the base (1).