阅读说明：本技术 一种用于光伏直流配电系统的配电箱 (Distribution box for photovoltaic direct-current distribution system ) 是由 金艳涛 于 2020-06-04 设计创作，主要内容包括：本发明属于电缆线配件技术领域,尤其为一种用于光伏直流配电系统的配电箱,包括电箱,所述电箱内部固定安装有排板,所述排板表面固定安装有显示仪表、直流断路器、防返流二极管、浪涌保护器、电流检测仪、过欠压保护器、总开关,所述电箱顶部设有多个通风口,通风口一侧固定安装有指示灯,所述电箱两侧内壁分别固定安装有地线和零线,所述电箱底部上开设有多个排线孔,所述电箱一侧固定安装有箱门,所述箱门与电箱一侧铰接,所述箱门表面开设有塑料透明窗,所述箱门底部固定安装有继电保护装置,所述箱门一侧开设有把手。本发明电网线路成本低,输电耗损小,供电可靠性高。(The invention belongs to the technical field of cable accessories, and particularly relates to a distribution box for a photovoltaic direct-current distribution system, which comprises an electric box, wherein a row plate is fixedly arranged in the electric box, the surface of the row plate is fixedly provided with a display instrument, a direct-current circuit breaker, a backflow prevention diode, a surge protector, a current detector, an over-voltage and under-voltage protector and a main switch, the top of the electric box is provided with a plurality of ventilation openings, one side of each ventilation opening is fixedly provided with an indicator lamp, the inner walls of the two sides of the electric box are respectively and fixedly provided with a ground wire and a zero wire, the bottom of the electric box is provided with a plurality of row wire holes, one side of the electric box is fixedly provided with a box door, the box door is hinged with one side of the electric box, the surface of the box door is provided with a plastic transparent window, the bottom of the box is fixedly provided with a relay protection device, and one side of the box door is provided with a handle. The invention has low cost of the power grid line, low power transmission loss and high power supply reliability.)

1. A block terminal for a photovoltaic direct current distribution system, comprising a block terminal (1), characterized in that: the electric box is characterized in that a row plate (2) is fixedly mounted inside the electric box (1), a display instrument (3), a direct-current circuit breaker (4), a backflow prevention diode (5), a surge protector (6), a current detector (7), a cross undervoltage protector (8) and a main switch (9) are fixedly mounted on the surface of the row plate (2), a plurality of vents are arranged at the top of the electric box (1), an indicator lamp (10) is fixedly mounted on one side of each vent, a ground wire (11) and a zero wire (12) are respectively and fixedly mounted on the inner walls of two sides of the electric box (1), a plurality of row wire holes (13) are formed in the bottom of the electric box (1), a box door (14) is fixedly mounted on one side of the electric box (1), the box door (14) is hinged to one side of the electric box (1), a plastic window (15) is formed in the surface of the box door (14), a relay protection device (16) is fixedly mounted at the bottom of the box door (14), one side of the box door (14) is provided with a handle (17).

2. The utility model provides a block terminal for photovoltaic direct current distribution system of claim 1, characterized in that: four fixing through holes are formed in the inner walls of the row plates (2) and (1), and the corresponding fixing through holes are in threaded connection with the same bolt.

3. The utility model provides a block terminal for photovoltaic direct current distribution system of claim 1, characterized in that: the plastic transparent window (15) corresponds to the display instrument (3).

4. The utility model provides a block terminal for photovoltaic direct current distribution system of claim 1, characterized in that: and a heat dissipation fan (18) is fixedly installed on one side of the electric box (1).

5. The utility model provides a block terminal for photovoltaic direct current distribution system of claim 1, characterized in that: the surface of the box door (14) is provided with a plurality of heat dissipation holes (19).

6. The utility model provides a block terminal for photovoltaic direct current distribution system of claim 1, characterized in that: the direct current circuit breaker (4), the backflow prevention diode (5), the surge protector (6), the current detector (7), the overvoltage and undervoltage protector (8) and the main switch (9) are connected in parallel.

Technical Field

The invention relates to the technical field of cable accessories, in particular to a distribution box for a photovoltaic direct-current distribution system.

Background

At present, used circuit breaker, protector etc. all are ac circuit breaker among the domestic photovoltaic system, and ac protector places in a block terminal, and dc circuit breaker, dc protector place in another block terminal, and such setting just needs two block terminals to place the circuit breaker like this, also be the switch, if need operating switch, then need all open two boxes, the operation is more troublesome, also can not very audio-visual expression switch box place simultaneously. And the power transmission mode is more flexible and quicker.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a distribution box for a photovoltaic direct-current distribution system.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a block terminal for photovoltaic direct current distribution system, includes the electronic box, the inside fixed mounting of electronic box has the platoon board, platoon board fixed surface installs display instrument, direct current circuit breaker, prevents that backflow diode, surge protector, current detector, cross undervoltage protection ware, master switch, the electronic box top is equipped with a plurality of vents, and vent one side fixed mounting has the pilot lamp, electronic box both sides inner wall fixed mounting respectively has ground wire and zero line, a plurality of row's line holes have been seted up on the electronic box bottom, electronic box one side fixed mounting has the chamber door, the chamber door is articulated with electronic box one side, the plastics transparent window has been seted up on the chamber door surface, chamber door bottom fixed mounting has relay protection device, the handle has been seted up to chamber door one side.

Preferably, four fixing through holes are formed in the inner walls of the row plates and the inner walls of the row plates, and the corresponding fixing through holes are in threaded connection with the same bolt.

Preferably, the plastic transparent window corresponds to the display instrument.

Preferably, a heat dissipation fan is fixedly installed on one side of the electric box.

Preferably, the surface of the box door is provided with a plurality of heat dissipation holes.

Preferably, the direct current circuit breaker, the backflow prevention diode, the surge protector, the current detector, the overvoltage and undervoltage protector and the main switch are in parallel connection.

Compared with the prior art, the invention has the beneficial effects that: during the use can be done on arranging the board earlier, the distribution of each original paper, for example, prevent that the diode fixed mounting that backflows is at equipment power input port, with positive and negative connect anti-damage power and equipment when preventing inserting the power, direct current breaker passes through the connection of electric wire with surge protector, surge protector is connected with the ground wire, in order to guarantee at electrical apparatus short circuit, or when taking place the thunder and lightning to each electrical components have a fine protection, and current detector detects when voltage is too high or under-voltage very first time, the pilot lamp can shine, cross under-voltage protector and produce the effect, automatic tripping cuts open the circuit, the fixed mounting's on the chamber door relay protector also is real-time supervision whole circuit system, can send alarm signal when breaking down, perhaps directly to the circuit that breaks down.

The invention has low cost of the power grid line, low power transmission loss and high power supply reliability.

Drawings

FIG. 1 is a schematic external view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic diagram of a link structure according to the present invention;

in the figure: 1. an electric box; 2. arranging plates; 3. a display instrument; 4. a direct current breaker; 5. an anti-reverse diode; 6. a surge protector; 7. a current detector; 8. an over-voltage and under-voltage protector; 9. a master switch; 10. an indicator light; 11. a ground wire; 12. a zero line; 13. a wire arranging hole; 14. a box door; 15. a plastic transparent window; 16. a relay protection device; 17. a handle; 18. a heat dissipation fan; 19. and (4) heat dissipation holes.

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.

The utility model provides a block terminal for photovoltaic direct current distribution system, including electronic box 1, 1 inside fixed mounting of electronic box has platoon 2, 2 fixed surface of platoon have display instrument 3, direct current breaker 4, prevent backflow diode 5, surge protector 6, current detector 7, cross undervoltage protection ware 8, master switch 9, 1 top of electronic box is equipped with a plurality of vents, vent one side fixed mounting has pilot lamp 10, 1 both sides inner wall of electronic box is fixed mounting respectively has ground wire 11 and zero line 12, a plurality of row line hole 13 have been seted up on 1 bottom of electronic box, 1 one side fixed mounting of electronic box has box door 14, box door 14 is articulated with 1 one side of electronic box, plastic transparent window 15 has been seted up on the surface of box door 14, 14 bottom fixed mounting of box door has relay protection device 16, handle 17 has been seted up to 14 one side of box door.

Four fixing through holes are formed in the inner walls of the row plates and the inner walls of the row plates, corresponding fixing through holes are in threaded connection with the same bolt, the plastic transparent window corresponds to the display instrument, a heat dissipation fan is fixedly mounted on one side of the electric box, and preferably, a plurality of heat dissipation holes are formed in the surface of the box door. Preferably, the direct current circuit breaker, the anti-backflow diode, the surge protector, the current detector, the over-voltage and under-voltage protector and the master switch are in a parallel state, when the direct current circuit breaker, the anti-backflow diode, the surge protector, the over-voltage and under-voltage protector and the master switch are used, the distribution of all elements can be made on the row plate (2) firstly, for example, the anti-backflow diode (5) is fixedly arranged at the power supply input port of the equipment so as to prevent the positive electrode and the negative electrode from being connected and damaging the power supply and the equipment when the power supply is connected, the direct current circuit breaker (4) is connected with the surge protector (6) through an electric wire, the surge protector (6) is connected with a ground wire (11) so as to ensure that each electrical element is well protected when an electrical appliance is short-circuited or thunder occurs, when the current detector (7) detects that the voltage is overhigh or undervoltage at the first time, the indicator lamp 10 can be lightened, the over-voltage and the under-voltage protector (8) can act to automatically trip and cut the circuit, and the relay protector (16) fixedly arranged on the box door (14) also monitors the whole circuit system in real time, a warning signal may be issued in the event of a fault, or a trip command may be issued directly to the line in which the fault occurred.

The invention has low cost of the power grid line, low power transmission loss and high power supply reliability.

The working principle is as follows: when the device is used, the device can be firstly manufactured on the row board 2, the distribution of all elements is realized, for example, the anti-backflow diode 5 is fixedly arranged at the power supply input port of the device, the positive electrode and the negative electrode are connected with each other to prevent the power supply and the device from being damaged when the power supply is connected, the direct current breaker 4 is connected with the surge protector 6 through an electric wire, the surge protector 6 is connected with the ground wire 11 to ensure that each electrical element is well protected when the electrical appliance is short-circuited or thunder occurs, when the current detector 7 detects that the voltage is overhigh or undervoltage at the first time, the indicator lamp 10 can be lightened, the undervoltage protector 8 plays a role to automatically trip and cut off a circuit, and the relay protector 16 fixedly arranged on the box door 14 also monitors the whole circuit system in real time, and sends out a warning signal when a fault occurs, or directly sends out a tripping command to a fault circuit. The invention has low cost of the power grid line, low power transmission loss and high power supply reliability.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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.