CN215772924U

CN215772924U - Many level modularization photovoltaic inverter of collaborative cooling

Info

Publication number: CN215772924U
Application number: CN202120621232.4U
Authority: CN
Inventors: 孙婷; 赵子涵; 赵永彬
Original assignee: Nanjing Guodian Nanzi New Energy Engineering Technology Co ltd
Current assignee: Nanjing Guodian Nanzi New Energy Engineering Technology Co ltd
Priority date: 2021-03-27
Filing date: 2021-03-27
Publication date: 2022-02-08
Anticipated expiration: 2031-03-27

Abstract

The utility model discloses a collaborative cooling multi-level modular photovoltaic inverter which comprises an inverter body, wherein the inverter body is of a main outer frame structure of equipment, the top end of the inverter body is connected with a rain shield, and heat conducting plates are arranged at the left end and the right end of the inverter body; the connecting seat is mounted on the outer surface of the bottom end of the inverter body, limiting plates are arranged at the left end and the right end of the connecting seat, and a fan is mounted at the middle end of the connecting seat; the circulating pipeline is connected with the connecting seat and the inverter body, and one end of the circulating pipeline is connected with a circulating pump; and the reinforced support is arranged on the outer surface of the bottom end of the connecting seat. This photovoltaic inverter based on many level of modularization structure, when the heat-conducting plate temperature absorbed too high, the risk that the equipment inside exists is great, and what the heat-conducting plate lasted is to oil groove heating expansion, utilizes the oil pressure to push up movable piston rod and circuit ware contact to can cut off the power supply, avoid inside temperature unusual and lead to the large tracts of land to damage.

Description

Many level modularization photovoltaic inverter of collaborative cooling

Technical Field

The utility model relates to the technical field of photovoltaic inverters, in particular to a multi-level modular photovoltaic inverter with cooperative cooling.

Background

The modularized multi-level photovoltaic inverter can convert variable direct-current voltage generated by a photovoltaic solar panel into an inverter of commercial power frequency alternating current, and can feed back the variable direct-current voltage to a commercial power transmission system or be used for an off-grid power grid.

However, in the process of converting direct current and alternating current of the photovoltaic inverter, the internal temperature is relatively high, if the heat is not dissipated in time, the electrical conversion efficiency is affected to a certain extent, residual current is generated, the level structure is easily damaged, the installation environment is relatively severe, various outdoor environments cannot be met, and the overall practicability is affected, so that a multi-level modular photovoltaic inverter with cooperative cooling is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multi-level modular photovoltaic inverter with cooperative cooling, and aims to solve the problems that in the process of converting direct current and alternating current of the photovoltaic inverter, the internal temperature is relatively high, if the internal temperature is not timely radiated, the electrical conversion efficiency is influenced to a certain extent, residual current is generated, the level structure is easily damaged, and meanwhile, the installation environment is relatively severe, and various outdoor environments cannot be met, so that the overall practicability is influenced in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a cooperatively cooled multi-level modular photovoltaic inverter, comprising:

the solar photovoltaic inverter comprises an inverter body, a solar panel and a heat conducting plate, wherein the inverter body is of a main outer frame structure of equipment, the top end of the inverter body is connected with the rain baffle, and the left end and the right end of the inverter body are provided with the heat conducting plates;

the connecting seat is mounted on the outer surface of the bottom end of the inverter body, limiting plates are arranged at the left end and the right end of the connecting seat, and a fan is mounted at the middle end of the connecting seat;

the circulating pipeline is connected with the connecting seat and the inverter body, and one end of the circulating pipeline is connected with a circulating pump;

the reinforced support is arranged on the outer surface of the bottom end of the connecting seat, and the position of the reinforced support is parallel to the connecting seat;

the circuit breaker is installed inside the inverter body, and one end of the circuit breaker is connected with a power supply.

Preferably, the bottom end of the rain shield is connected with a water guide frame, and the tail end of the water guide frame is flush with the tail end of the reinforced support.

Preferably, the inside of the water guide frame is respectively connected with a drainage pipeline and a recovery pipeline, the drainage pipeline is symmetrical to the recovery pipeline, and the drainage pipeline is inclined.

Preferably, the bottom of the inverter body is provided with a vent hole, a module group is arranged inside the inverter body, an interlayer of the inverter body is mutually attached to the peripheral outer wall of the heat conducting plate, and an ear seat is arranged outside the inverter body.

Preferably, the fan is installed to the connecting seat middle-end, the inside hollow structure that is of connecting seat, connecting seat in-connection has the circulating line, the parallel laminating of circulating line is at heat-conducting plate one end surface.

Preferably, one end of the recovery pipeline is connected to the inner surface of the connecting seat, a supporting pipe hoop is connected to the outer side of the recovery pipeline in a clamping mode, and one end of the supporting pipe hoop is connected with the outer surface of the inverter body.

Preferably, an oil groove is preset in the heat conducting plate, a piston rod is connected in the oil groove, and the outer surface of the top end of the piston rod is movably connected with the inner wall of the breaker.

The utility model has the beneficial effects that:

1. the heat conducting plate is additionally arranged in the interlayer of the inverter, so that heat inside the equipment can be continuously absorbed and transferred to the circulating pipe, the heat conducting plate is cooled by the circulating pipe, the heat conducting function of the heat conducting plate is ensured, the bottom of the equipment is subjected to wind power heat dissipation by matching with a fan, a connecting seat for storing water can be subjected to heat dissipation by wind power, and the cooling effect of the circulating water is improved;

furthermore, when the temperature absorption of the heat conduction plate is too high, the risk in the equipment is high, the heat conduction plate continuously heats and expands the oil groove, the piston rod is pushed by oil pressure to be in contact with a circuit device, so that the power supply can be powered off, the large-area damage caused by abnormal internal temperature is avoided, and the safety of maintenance personnel is improved;

2. the supporting component is distributed and arranged at the upper position, the middle position and the lower position of the equipment, the stress is more balanced, the stability of hanging the inverter is increased, meanwhile, the water guide frame and the rain baffle are mutually matched, the rainwater can be collected and utilized, the water which can be continuously supplied for the inside of the connecting seat is prevented from being lost too much in the water diversion process, the cooling effect is reduced, and the overall practicability of the equipment is improved.

Drawings

FIG. 1 is a schematic view of the overall front view structure of the present invention;

FIG. 2 is a schematic overall side view of the present invention;

FIG. 3 is a schematic cross-sectional view of the heat-conducting plate and circuit breaker of the present invention;

FIG. 4 is a schematic top view of the connecting base of the present invention;

fig. 5 is a schematic top view of the rain shield and the water guide frame according to the present invention.

In the figure: 1. an inverter body; 2. a rain shield; 3. a water guide frame; 4. a water discharge pipeline; 5. a recovery pipeline; 6. a connecting seat; 7. supporting the pipe hoop; 8. a limiting plate; 9. a circulation pipe; 10. a circulation pump; 11. strengthening the support; 12. a heat conducting plate; 13. a module group; 14. a circuit breaker; 15. a vent hole; 16. a fan; 17. an ear mount; 18. an oil sump; 19. a piston rod; 20. a power source.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a cooperatively cooled multi-level modular photovoltaic inverter, comprising:

the inverter body 1 is of a main outer frame structure of equipment, the top end of the inverter body 1 is connected with a rain shield 2, and heat conducting plates 12 are arranged at the left end and the right end of the inverter body 1;

the connecting seat 6 is installed on the outer surface of the bottom end of the inverter body 1, limiting plates 8 are arranged at the left end and the right end of the connecting seat 6, and a fan 16 is installed at the middle end of the connecting seat 6;

a circulation pipe 9 connected to the connecting base 6 and the inverter body 1, one end of the circulation pipe 9 being connected to a circulation pump 10;

the reinforced support 11 is arranged on the outer surface of the bottom end of the connecting seat 6, and the position of the reinforced support 11 is parallel to the connecting seat 6;

a circuit breaker 14 installed inside the inverter body 1, one end of the circuit breaker 14 being connected to a power supply 20;

the bottom end of the rain baffle 2 is connected with a water guide frame 3, the tail end of the water guide frame 3 is flush with the tail end of the reinforced support 11, the rain baffle 2 is arranged at the upper end of the water guide frame 3, one end of the water guide frame 3 and the tail end of the reinforced support 11 are positioned in the same vertical line, the reinforced support 11 is convenient for supporting and fixing the bottom end of the inverter body 1, and the water guide frame 3 supports and fixes the rain baffle 2 and the top end of the inverter body 1, so that the inverter body 1 is stressed more uniformly when being suspended, and the mounting stability is improved;

a drainage pipeline 4 and a recovery pipeline 5 are respectively connected inside the water guide frame 3, the position of the drainage pipeline 4 and the position of the recovery pipeline 5 are mutually symmetrical, the drainage pipeline 4 is inclined, one end of the water guide frame 3 is higher than the bottom end of the rain baffle 2, water in the rain baffle 2 can be collected, the drainage pipeline 4 discharges rainwater, the flow direction of the rainwater is changed by utilizing the inclination, the normal use of the inverter body 1 is avoided being influenced, and meanwhile, the recovery pipeline 5 can be utilized to utilize the rainwater;

the bottom of the inverter body 1 is provided with a vent hole 15, a module group 13 is arranged inside the inverter body 1, an interlayer of the inverter body 1 is mutually attached to the peripheral outer wall of the heat conducting plate 12, an ear seat 17 is arranged outside the inverter body 1, the heat conducting plate 12 is clamped in the interlayers at the left end and the right end of the inverter body 1 and is tightly attached to the interlayers, heat emitted by the module group 13 and internal electrical components can be absorbed, and meanwhile, the vent hole 15 at the bottom of the inverter body 1 is matched to increase the heat dissipation effect on the inverter body 1;

a fan 16 is installed at the middle end of the connecting seat 6, the inside of the connecting seat 6 is of a hollow structure, a circulating pipeline 9 is connected in the connecting seat 6, the circulating pipeline 9 is attached to the outer surface of one end of the heat conducting plate 12 in parallel, cooling water is arranged in the connecting seat 6 and matched with the circulating pipelines 9 at two ends, the cooling water flows on the outer surface of the heat conducting plate 12 under the action of a circulating pump 10, the heat conducting plate 12 can be cooled continuously through circulating flow, and normal heat transfer of the heat conducting plate 12 is ensured, so that equipment can be continuously cooled, and the fan 16 can cool the cooling water in the connecting seat 6 by utilizing circulating air while discharging heat in the inverter body 1;

one end of a recovery pipeline 5 is connected to the inner surface of a connecting seat 6, a supporting pipe hoop 7 is connected to the outer side of the recovery pipeline 5 in a clamping mode, one end of the supporting pipe hoop 7 is connected with the outer surface of the inverter body 1, the recovery pipeline 5 is connected between the connecting seat 6 and the water guide frame 3 respectively, water in the water guide frame 3 is convenient to discharge into the connecting seat 6, the supporting pipe hoop 7 can utilize a valve in the recovery pipeline 5 to close the recovery pipeline 5 while supporting the recovery pipeline 5, and therefore cooling water can be added and supplied conveniently;

oil groove 18 has been preset to heat-conducting plate 12 inside, 18 in-connection in the oil groove have

piston rod

19, 19 top surfaces of piston rod and 14 inner wall swing joint of circuit breaker, when the inside high temperature of heat-conducting plate 12, inside oil groove 18 also continuously heats thereupon, drive piston rod 19 and circuit breaker 14 through the oil pressure, close power 20 by circuit breaker 14, thereby reach the power-off protection effect, when avoiding causing the damage of internal plant, maintainer's safety has also been increased.

The working principle is as follows: when the photovoltaic inverter based on the modularized multi-level structure is used, firstly, the inverter body 1 is installed in a hanging mode, the support plate matched with the lug seats 17 is installed on a wall body according to the distance between the two lug seats 17, then the lug seats 17 are fixed on the wall, then the back surfaces of the water guide frame 3 and the strengthening support 11 are fixed by bolts in sequence, meanwhile, the screw rods penetrate through the limiting plate 8 and are connected with the wall body, the stability of hanging stress of the inverter body 1 is improved, when the temperature of the electrical elements in the module group 13 is overhigh, the heat is absorbed by the heat conduction plate 12 and is transferred to the circulating pipeline 9, the circulating water in the circulating pipeline 9 continuously cools the heat conduction plate 12, the heat transfer effect of the heat conduction plate 12 is ensured, the circulating pipeline 9 is pressurized by the circulating pump 10, and the cooling water in the circulating pipeline 9 continuously circulates in the connecting seat 6, meanwhile, the fan 16 can perform heat dissipation treatment on the bottom of the inverter body 1, the air vent 15 discharges heat inside the equipment out of the box, when the fan 16 dissipates heat to the inverter body 1, wind power can be used for cooling water inside the connecting seat 6, the temperature of water circulation is ensured, when the weather of rainwater is met, the rain baffle plate 2 blocks rainwater, the internal elements of the inverter body 1 are prevented from being affected with damp, the water guide frame 3 can collect rainwater temporarily, the rainwater continuously flows out from one end of the drainage pipeline 4, when the connecting seat 6 needs to supply water, a valve for connecting the support pipe hoop 7 with the recovery pipeline 5 is opened, the rainwater continuously flows into the connecting seat 6 from the recovery pipeline 5, the phenomenon that the water inside the connecting seat 6 is excessively lost due to long-term use and affects the cooling effect is avoided, when the current temperature in the inverter body 1 is sharply increased or burnt, oil groove 18 inside heat-conducting plate 12 collides under the influence of high temperature to utilize the oil pressure with piston rod 19 parallel slip, when piston rod 19 collides with circuit breaker 14 contact point, can be timely break off power supply 20, thereby reach the effect of power-off protection, increased holistic practicality.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A cooperatively cooled multi-level modular photovoltaic inverter, comprising:

the inverter comprises an inverter body (1) which is a main outer frame structure of equipment, wherein a rain baffle (2) is connected to the top end of the inverter body (1), and heat conducting plates (12) are arranged at the left end and the right end of the inverter body (1);

the inverter comprises a connecting seat (6) which is arranged on the outer surface of the bottom end of the inverter body (1), limiting plates (8) are arranged at the left end and the right end of the connecting seat (6), and a fan (16) is arranged at the middle end of the connecting seat (6);

the circulating pipeline (9) is connected with the connecting seat (6) and the inverter body (1) mutually, and one end of the circulating pipeline (9) is connected with a circulating pump (10);

the reinforced support (11) is arranged on the outer surface of the bottom end of the connecting seat (6), and the position of the reinforced support (11) is parallel to the connecting seat (6);

and a circuit breaker (14) installed inside the inverter body (1), wherein one end of the circuit breaker (14) is connected with a power supply (20).

2. A cooperatively cooled multi-level modular photovoltaic inverter according to claim 1, characterized in that: the bottom end of the rain baffle (2) is connected with a water guide frame (3), and the tail end of the water guide frame (3) is flush with the tail end of the reinforced support (11).

3. A cooperatively cooled multi-level modular photovoltaic inverter according to claim 2, characterized in that: the water guide frame (3) is internally connected with a drainage pipeline (4) and a recovery pipeline (5) respectively, the drainage pipeline (4) is symmetrical to the recovery pipeline (5), and the drainage pipeline (4) is inclined.

4. A cooperatively cooled multi-level modular photovoltaic inverter according to claim 1, characterized in that: the heat conduction plate is characterized in that a ventilation hole (15) is formed in the bottom of the inverter body (1), a module group (13) is arranged inside the inverter body (1), the interlayer of the inverter body (1) is attached to the peripheral outer wall of the heat conduction plate (12), and an ear seat (17) is arranged outside the inverter body (1).

5. A cooperatively cooled multi-level modular photovoltaic inverter according to claim 1, characterized in that: fan (16) are installed to connecting seat (6) middle-end, connecting seat (6) inside is hollow structure, connecting seat (6) in-connection has circulating line (9), circulating line (9) parallel laminating is in heat-conducting plate (12) one end surface.

6. A cooperatively cooled multi-level modular photovoltaic inverter according to claim 1, characterized in that: the inverter is characterized in that one end of the recovery pipeline (5) is connected to the inner surface of the connecting seat (6), a supporting pipe hoop (7) is connected to the outer side of the recovery pipeline (5) in a clamping mode, and one end of the supporting pipe hoop (7) is connected with the outer surface of the inverter body (1) in an interconnecting mode.

7. A cooperatively cooled multi-level modular photovoltaic inverter according to claim 1, characterized in that: an oil groove (18) is preset in the heat conducting plate (12), a piston rod (19) is connected in the oil groove (18), and the outer surface of the top end of the piston rod (19) is movably connected with the inner wall of the breaker (14).