CN217588838U - Electric arc protector among photovoltaic system - Google Patents

Abstract

The utility model relates to a photovoltaic system protector technical field especially relates to an electric arc protector among photovoltaic system. The technical scheme comprises the following steps: casing, protection casing and servo motor, the inside symmetry of casing is provided with the protection casing, the arc extinguishing pipe is all installed to the inside of protection casing, the inside of arc extinguishing pipe is provided with the fuse, fuse upper end upper portion electrode, the contact groove has been seted up to the upper end of upper portion electrode, the lower part electrode is connected to the fuse upper end, servo motor is installed to the relative one side of protection casing, servo motor's upper end is provided with insulating seat, the upper surface joint of insulating seat has electrically conductive frame. The utility model discloses a servo motor drives electrically conductive frame and rotates, has avoided the staff to need frequently to maintain the fuse piece among the more device, has greatly reduced staff's intensity of labour to make the device can communicate the circuit the very first time, make photovoltaic system can continue to carry electric power.

Description

Electric arc protector among photovoltaic system

Technical Field

The utility model relates to a photovoltaic system protector technical field specifically is an electric arc protector among photovoltaic system.

Background

The photovoltaic system converts solar energy into electric energy and transmits the electric energy to a power grid, and is generally divided into an independent system, a grid-connected system and a hybrid system, and during the operation of the photovoltaic system for a long time, the direct current arc phenomenon and air breakdown are directly caused by poor contact, contact quality problems and insulation part aging caused by long-term operation due to the fact that joints are not screwed down, and the electric arc caused by operations such as normal turn-off of a circuit breaker belongs to normal electric arc; and the arc caused by faults such as wire aging and poor contact belongs to abnormal arc.

The arc detection in the photovoltaic system is to detect various parameter changes of the arc in physics and electricity through a sensor at the initial stage of the arc generation, and analyze the parameter changes to judge whether an abnormal arc is generated, so that a circuit can be disconnected in time, and dangerous accidents such as fire disasters are avoided.

In conclusion, when an arc occurs in a line of the photovoltaic system, the safety fuse in the circuit is broken, when the photovoltaic system detects that the arc belongs to a normal arc, a worker still needs to maintain the photovoltaic system, and the safety fuse is replaced, so that the labor intensity of the worker is greatly increased, and meanwhile, the photovoltaic system cannot be connected with a power grid at the first time, and a large amount of electric energy is wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric arc protector among photovoltaic system to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an electric arc protector among photovoltaic system, includes casing, protection casing and servo motor, its characterized in that: the inside symmetry of casing is provided with the protection casing, the arc extinguishing pipe is all installed to the inside of protection casing, the inside of arc extinguishing pipe is provided with the fuse piece, the fuse piece upper end is connected with and runs through the upper portion electrode of protection casing outer wall, the contact groove has been seted up to the upper end of upper portion electrode, the fuse piece upper end is connected with and runs through the lower part electrode of protection casing outer wall, servo motor is installed to the relative one side of protection casing, servo motor's upper end is provided with insulating seat, the upper surface joint of insulating seat has electrically conductive frame, the upper surface of electrically conductive frame one end is provided with the rotating contact.

Preferably, the hinge is symmetrically installed at the opening of the shell, one side of the shell is connected with a movable door through the hinge, and a handle is installed at one side of the movable door. The opening of the shell can be closed through the movable door, so that the electric element in the shell is prevented from being influenced by the outside, meanwhile, the movable door can be conveniently opened by a worker through the hinge, and the movable door can be quickly opened or closed through the handle.

Preferably, the upper surface of the shell is provided with a warning lamp. The warning light can send out light alarm, reminds the staff to maintain.

Preferably, a positioning rod penetrates through and is inserted into one side of the insulating seat, which is different from the upper end and the lower end of the insulating seat, and nuts are connected to the two ends of the positioning rod in a threaded manner. One end of the conductive frame can be fixed on the insulating seat through the positioning rod, and the conductive rod is prevented from being separated from the insulating seat.

Preferably, the lower electrode is electrically connected through a wire. The lower electrodes are connected in parallel, and the two lower electrodes are connected into the same circuit.

Preferably, a wire inlet is formed in the upper end of one side of the shell, a wire outlet is formed in the lower surface of the shell, and rubber retaining sheets are arranged inside the wire inlet and the wire outlet. Can be convenient for the staff to connect the installation with photovoltaic system's wire through inlet and outlet, can reduce the gap behind the inlet and the outlet inserted the wire through the rubber separation blade simultaneously.

Compared with the prior art, the beneficial effects of the utility model are that: the device is through setting up two sets of arc extinguishing pipes and fuse, when photovoltaic system's circuit contact failure emergence electric arc, make the fuse in the interconnecting link receive overcurrent melting fracture, continue to produce electric arc in avoiding photovoltaic system, and when photovoltaic system detected electric arc for normal electric arc, the steerable servo motor of the device takes the conducting frame to rotate, make the expansion end and another upper portion electrode of conducting frame contact, make photovoltaic system can continue to feed through and generate electricity, avoid the staff to need frequently to maintain the fuse in the more device of changing, staff's intensity of labour has greatly been reduced, and make the device can feed through the circuit in the very first time, make photovoltaic system can continue to carry electric power.

Drawings

FIG. 1 is a schematic view of the main sectional structure of the present invention;

FIG. 2 is an enlarged view of the insulating base shown in FIG. 1 according to the present invention;

fig. 3 is the view of the cross-sectional structure of the present invention.

In the figure: 1. a movable door; 2. a hinge; 3. a housing; 4. a handle; 5. a protective cover; 6. an upper electrode; 7. a warning light; 8. a contact groove; 9. rotating the contact; 10. a conductive frame; 11. a wire inlet; 12. an insulating base; 13. an arc extinguishing pipe; 14. fusing the sheets; 15. a lower electrode; 16. a servo motor; 17. a rubber baffle plate; 18. an outlet; 19. and (5) positioning the rod.

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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1-3, the arc protection device in a photovoltaic system provided by the present invention comprises a housing 3, a protective cover 5 and a servo motor 16, wherein hinges 2 are symmetrically installed at an opening of the housing 3, and a movable door 1 is connected to one side of the housing 3 through the hinges 2, a handle 4 is installed at one side of the movable door 1, the opening of the housing 3 can be closed through the movable door 1, thereby preventing electric components inside the housing 3 from being affected by the outside, thereby prolonging the service life of the device, meanwhile, a worker can conveniently open the movable door 1 through the hinges 2, and can rapidly open or close the movable door 1 through the handle 4, thereby greatly reducing the labor intensity of the worker, the protective cover 5 is symmetrically installed inside the housing 3, an arc extinguishing tube 13 is installed inside the protective cover 5, a fuse piece 14 is installed inside the arc extinguishing tube 13, an upper end of the fuse piece 14 is connected with an upper electrode 6 penetrating through the outer wall of the protective cover 5, an upper end of the upper electrode 6 is opened with a contact groove 8 is formed at the upper end of the upper electrode 14, an upper end of the fuse piece 14 is connected with a lower electrode 15 penetrating through the outer wall of the protective cover 5, the outer wall of the lower electrode 15, the lower electrode 15 is electrically connected in parallel connection with a common insulation base, thereby avoiding the servo motor 12, and avoiding the damage of the servo motor 12, and providing a conventional insulation base 12, and providing a conventional insulation technology for the servo motor 12, and avoiding the damage to the servo motor 16, and avoiding the servo motor 12, and avoiding the damage of the servo motor 12, and the both ends of locating lever 19 all threaded connection have the nut, can fix the one end of electrically conductive frame 10 on insulating seat 12 through locating lever 19, avoid electrically conductive pole and insulating seat 12 to take place to break away from, greatly improved the practicality of device, the upper surface joint of insulating seat 12 has electrically conductive frame 10.

Example two

As shown in fig. 1-3, the utility model provides an arc protector among photovoltaic system compares in embodiment one, and this embodiment still includes: the upper surface of electrically conductive frame 10 one end is provided with rotation contact 9, rotation contact 9 can connect the wire, simultaneously electrically conductive frame 10 can avoid the wire to rotate along with together when rotating, the wire of avoiding connecting breaks, the upper surface of casing 3 is provided with warning light 7, warning light 7 is connected with the inside electric elements electricity of casing 3, when the circuit breaks down, warning light 7 can send light alarm, remind the staff to maintain, inlet 11 has been seted up to one side upper end of casing 3, outlet 18 has been seted up to the lower surface of casing 3, inlet 11 and outlet 18's inside all is provided with rubber catch 17, can be convenient for the staff to connect the installation with photovoltaic system's wire through inlet 11 and outlet 18, gap behind the reducible inlet 11 of wire and outlet 18 insert the wire through rubber catch 17 simultaneously, avoid external dust or steam to get into the normal operating of the inside influence equipment of casing 3.

In this embodiment, the device is connected on photovoltaic system's circuit, protect the circuit through arc extinguishing pipe 13 and fuse 14, after photovoltaic system somewhere takes place the electric arc, the inside fuse 14 of the device can break off, make the circuit disconnection, when the system detects electric arc for normal electric arc, steerable servo motor 16 drives conducting frame 10 and rotates, make the one end and another upper electrode 6 of conducting frame 10 be connected, make the circuit continue to feed through, avoid needing staff to arrive on-the-spot change fuse 14, staff's intensity of labour has greatly been reduced, make the device feed through the circuit at the very first time simultaneously, make photovoltaic system can continue to carry electric power, the practicality of device has greatly been improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides an electric arc protector among photovoltaic system, includes casing (3), protection casing (5) and servo motor (16), its characterized in that: the inside symmetry of casing (3) is provided with protection casing (5), arc extinguishing pipe (13) are all installed to the inside of protection casing (5), the inside of arc extinguishing pipe (13) is provided with fuse piece (14), fuse piece (14) upper end is connected with and runs through upper portion electrode (6) of protection casing (5) outer wall, contact tank (8) have been seted up to the upper end of upper portion electrode (6), fuse piece (14) upper end is connected with and runs through lower part electrode (15) of protection casing (5) outer wall, servo motor (16) are installed to the relative one side of protection casing (5), the upper end of servo motor (16) is provided with insulating seat (12), the upper surface joint of insulating seat (12) has electrically conductive frame (10), the upper surface of electrically conductive frame (10) one end is provided with rotary contact (9).

2. The arc protection device in a photovoltaic system of claim 1, wherein: hinge (2) are installed to the opening part symmetry of casing (3), just casing (3) one side is passed through hinge (2) are connected with dodge gate (1), handle (4) are installed to one side of dodge gate (1).

3. The arc protection device in a photovoltaic system of claim 1, wherein: and a warning lamp (7) is arranged on the upper surface of the shell (3).

4. The arc protection device in a photovoltaic system of claim 1, wherein: a positioning rod (19) penetrates through one side of the insulating seat (12) different from the upper end and the lower end, and nuts are connected to the two ends of the positioning rod (19) in a threaded mode.

5. The arc protection device in a photovoltaic system of claim 1, wherein: the lower electrode (15) is electrically connected by a wire.

6. The arc protection device in a photovoltaic system of claim 1, wherein: an inlet (11) is formed in the upper end of one side of the shell (3), an outlet (18) is formed in the lower surface of the shell (3), and rubber blocking pieces (17) are arranged inside the inlet (11) and the outlet (18).

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