CN219892122U - Photovoltaic grid-connected circuit breaker - Google Patents

Abstract

The utility model relates to a photovoltaic grid-connected circuit breaker, which belongs to the technical field of circuit breakers, wherein adjacent circuit breaker bodies are connected with clamping grooves through buckles, wherein the fixed circuit breaker bodies are clamped on a base by T-shaped pieces, so that the fixed circuit breakers are stably installed, the other circuit breakers are mutually clamped and connected, the connection is stable, and the circuit breakers are also stable against the stability of the fixed circuit breaker bodies.

Description

Photovoltaic grid-connected circuit breaker

Technical Field

The utility model belongs to the technical field of circuit breakers, and particularly relates to a photovoltaic grid-connected circuit breaker.

Background

The photovoltaic power generation systems are generally divided into independent power generation systems, grid-connected power generation systems and hybrid power generation systems according to whether the photovoltaic power generation systems are connected with a power grid or not, wherein the market occupancy rate of the photovoltaic grid-connected power generation systems is maximum.

The photovoltaic grid-connected power generation system needs to be inverted into power grid voltage through an inverter after power generation and then is integrated into the power grid for use, harmonic waves and unstable voltage can occur in the process of transformation of the inverter, and the power quality of the power grid can be influenced after grid connection; and secondly, after the grid connection of the photovoltaic, when the grid connection switch is not disconnected in time during power failure of the power grid, the island phenomenon of the distributed photovoltaic can be caused, the phenomena of low voltage of the power grid and the like can be caused, and equipment can be damaged.

In the prior art, the equipment is protected by arranging the circuit breaker, and the circuit breaker can automatically cut off a circuit in the power failure, unstable voltage and other conditions of the power grid, so that the equipment is protected.

However, the existing photovoltaic grid-connected circuit breaker is inconvenient to detach or repair and replace due to the fact that a plurality of photovoltaic grid-connected circuit breakers are installed in one cabinet, and all the photovoltaic grid-connected circuit breakers need to be screwed or otherwise detached.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to solve the defects that the existing grid-connected circuit breaker is inconvenient to detach or repair and replace due to the fact that a plurality of grid-connected circuit breakers are installed in one cabinet.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the utility model relates to a photovoltaic grid-connected circuit breaker which comprises a grid-connected circuit breaker and a chassis, wherein the grid-connected circuit breaker is composed of a plurality of sub-circuit breakers in parallel, the sub-circuit breaker comprises a circuit breaker body and a base, a dovetail groove is formed in the base, yan Weigan is arranged on the chassis, the sub-circuit breaker is arranged on a dovetail rod on the chassis through the dovetail groove on the base, a T-shaped piece is arranged on one surface, in contact with the base, of the circuit breaker body, a rotary mounting groove is formed in the base, the inside of the rotary mounting groove is of a circular groove structure, through holes with the same outline as that of the T-shaped piece are formed in the rotary mounting groove, and the T-shaped piece of the circuit breaker body is arranged on the base in a 90-degree rotary mode through being inserted into the circular groove.

Preferably, the two side walls of the breaker body are respectively provided with a buckle and a clamping groove, a spring, a pressing block, a rod sleeve and a vertical rod are arranged in the clamping grooves, the buckles are provided with angle hooks, adjacent breakers are connected in the clamping grooves through the buckles, the pressing block is just opposite to the buckles extending out of the clamping grooves, one end of the vertical rod penetrates through the rod sleeve to be connected with the pressing block, the other end of the vertical rod extends out of the breaker body, the spring is sleeved on the vertical rod, the vertical rod is provided with a limit, and the spring is positioned between the rod sleeve and the limit.

Preferably, the center of the T-shaped piece is provided with a through hole, a screw is arranged in the through hole, the T-shaped piece is arranged on the base through the screw, and the T-shaped piece can be adjusted by unscrewing the screw.

Preferably, the underframe is provided with a mounting hole, and the underframe is mounted in the photovoltaic grid-connected cabinet by screwing a screw in the mounting hole.

Preferably, the upper end and the lower end of the breaker body are both provided with clamping grooves and buckles, and when the adjacent breaker bodies are disconnected, the vertical rods in the clamping grooves at the upper end and the lower end of the breaker body are required to be pressed simultaneously.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

according to the photovoltaic grid-connected circuit breaker disclosed by the utility model, the adjacent circuit breaker bodies are connected with the clamping groove through the clamping buckle, wherein the fixed circuit breaker bodies are clamped on the base by the T-shaped piece, so that the fixed circuit breaker is stably installed, the other circuit breakers are mutually clamped and connected, and are also stable and stable against the stability of the fixed circuit breaker bodies, when the circuit breaker in the fixed circuit breaker bodies needs to be disassembled, only the vertical rod needs to be pressed, the pressing block is used for pressing the clamping buckle, and the clamping buckle is separated from the clamping groove, so that the circuit breaker in the fixed circuit breaker can be disassembled, and the photovoltaic grid-connected circuit breaker is convenient and rapid.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a photovoltaic grid-connected circuit breaker according to the present utility model

FIG. 2 is a schematic diagram of a comparative example of a rotary mounting slot and T-piece of a photovoltaic grid-tie circuit breaker of the present utility model;

fig. 3 is a diagram showing a comparison between a buckle and a clamping groove of the photovoltaic grid-connected circuit breaker.

Reference numerals in the schematic drawings illustrate:

100. grid-connected circuit breaker; 110. a plurality of sub-circuit breakers; 111. a circuit breaker body; 112. a base; 113. a dovetail groove; 114. t-shaped piece; 115. a rotary mounting groove; 120. a buckle; 130. a clamping groove; 131. a spring; 132. briquetting; 133. a rod sleeve; 134. a vertical rod;

200. a chassis; 210. dovetail bar.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the utility model herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

Referring to fig. 1-3, a photovoltaic grid-connected circuit breaker of this embodiment includes a grid-connected circuit breaker 100 and a chassis 200, the grid-connected circuit breaker 100 is composed of a plurality of sub-circuit breakers 110 in parallel, each sub-circuit breaker includes a circuit breaker body 111 and a base 112, a dovetail groove 113 is provided on the base 112, yan Weigan 210 is provided on the chassis 200, the sub-circuit breakers are mounted on a dovetail rod 210 on the chassis 200 through the dovetail groove 113 on the base 112, a T-shaped piece 114 is provided on one surface of the circuit breaker body 111 contacting the base 112, a rotary mounting groove 115 is provided on the base 112, a circular ring groove structure is provided in the rotary mounting groove 115, through holes with the same outline as the T-shaped piece 114 are provided on the rotary mounting groove, and the T-shaped piece 114 of the circuit breaker body 111 is mounted on the base 112 by inserting into the circular ring groove and rotating by 90 °.

The two side walls of the breaker body 111 of the embodiment are respectively provided with a buckle 120 and a clamping groove 130, the clamping groove 130 is internally provided with a spring 131, a pressing block 132, a rod sleeve 133 and a vertical rod 134, the buckle 120 is provided with an angle hook, adjacent breakers are connected in the clamping groove 130 through the buckle 120, the pressing block 132 is opposite to the buckle 120 extending out of the clamping groove 130, one end of the vertical rod 134 penetrates through the rod sleeve 133 to be connected with the pressing block 132, the other end of the vertical rod 134 extends out of the breaker body 111, the spring 131 is sleeved on the vertical rod 134, the vertical rod 134 is provided with a limit, and the spring 131 is positioned between the rod sleeve 133 and the limit.

The center of the T-shaped member 114 in this embodiment is provided with a through hole, a screw is disposed in the through hole, the T-shaped member 114 is mounted on the base 112 by the screw, and the T-shaped member 114 can be rotated to adjust by unscrewing the screw.

The underframe 200 of the embodiment is provided with mounting holes, and the underframe 200 is mounted in the photovoltaic grid-connected cabinet by screwing screws in the mounting holes.

The upper end and the lower end of the breaker body 111 of the present embodiment are respectively provided with a clamping groove 130 and a buckle 120, and when the adjacent breaker bodies 111 are disconnected, the vertical rods 134 in the clamping grooves 130 at the upper end and the lower end of the breaker bodies 111 need to be pressed simultaneously.

In the above structural design, the grid-connected circuit breaker 100 is generally composed of a plurality of sub-circuit breakers 110 in parallel, the positions of the T-shaped pieces 114 on all the sub-circuit breakers are adjusted, so that one of the sub-circuit breakers is marked as a fixed circuit breaker body 111 which is installed on the base 112 through the T-shaped piece 114, the side surface of the circuit breaker body 111 is flush with the side surface of the base 112 only by rotating the circuit breaker body 11190 degrees, the positions of the T-shaped pieces 114 on the rest of the sub-circuit breakers meet the positions, the side surface of the circuit breaker body 111 is flush with the side surface of the base 112, the rest of the sub-circuit breakers can be inserted into the base 112, after all the circuit breaker bodies 111 are installed on the base 112, the adjacent circuit breaker bodies 111 are connected with the clamping groove 130 through the clamping buckle 120, wherein the fixed circuit breaker bodies 111 are connected with each other in a clamped and stable manner, and the rest of the circuit breakers are also connected and stable against the stability of the fixed circuit breaker bodies 111.

The foregoing examples merely illustrate certain embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the concept of the utility model, all of which fall within the scope of protection of the utility model; accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (5)

1. A photovoltaic grid-connected circuit breaker, characterized in that: including grid-connected circuit breaker (100) and chassis (200), grid-connected circuit breaker (100) are by a plurality of sub-circuit breakers (110) constitution side by side, sub-circuit breaker includes circuit breaker body (111) and base (112), be equipped with dovetail (113) on base (112), be equipped with Yan Weigan (210) on chassis (200), sub-circuit breaker passes through dovetail (113) on base (112) and installs on dovetail (210) on chassis (200), be equipped with T type spare (114) on the one side that circuit breaker body (111) contacted with base (112), be equipped with rotatory mounting groove (115) on base (112), the inside of rotatory mounting groove (115) is the ring groove structure, is equipped with the through-hole the same with T type spare (114) profile on it, T type spare (114) of circuit breaker body (111) are through inserting in the ring groove and rotatory 90 installs on base (112).

2. A photovoltaic grid-tie circuit breaker according to claim 1, characterized in that: be equipped with buckle (120) and draw-in groove (130) on two lateral walls of circuit breaker body (111) respectively, be equipped with spring (131), briquetting (132), pole cover (133) and montant (134) in draw-in groove (130), be equipped with the angle hook on buckle (120), adjacent the circuit breaker is connected in draw-in groove (130) through buckle (120) card, briquetting (132) are just stretching out buckle (120) in draw-in groove (130), briquetting (132) are connected through pole cover (133) to the one end of montant (134), and breaker body (111) are stretched out to the other end, spring (131) cover is on montant (134), be equipped with spacingly on montant (134), spring (131) are located between receiving pole cover (133) and the spacingly.

3. A photovoltaic grid-tie circuit breaker according to claim 1, characterized in that: the T-shaped piece (114) is provided with a through hole in the center, a screw is arranged in the through hole, the T-shaped piece (114) is arranged on the base (112) through the screw, and the T-shaped piece (114) can be rotated to adjust through unscrewing the screw.

4. A photovoltaic grid-tie circuit breaker according to claim 1, characterized in that: the photovoltaic grid-connected cabinet is characterized in that a mounting hole is formed in the underframe (200), and the underframe (200) is mounted in the photovoltaic grid-connected cabinet by screwing a screw in the mounting hole.

5. A photovoltaic grid-tie circuit breaker according to claim 1, characterized in that: the upper end and the lower extreme of circuit breaker body (111) all are equipped with draw-in groove (130) and buckle (120), and adjacent when circuit breaker body (111) disconnection, need press montant (134) in draw-in groove (130) of circuit breaker body (111) upper end and lower extreme simultaneously.