Photovoltaic DC molded case circuit breaker

Abstract

The utility model discloses a photovoltaic direct-current molded case circuit breaker, which relates to the technical field of circuit breakers and comprises a shell internally provided with an accommodating cavity. A mounting channel is formed in the side wall of the shell and communicates with the containing cavity through a connecting channel, a flexible partition plate is slidably connected into the mounting channel, the top and the bottom of the flexible partition plate are symmetrically arranged, the middle of the flexible partition plate is of a cuboid structure, the two ends of the flexible partition plate are both located in the containing cavity, and first threaded holes are formed in the two ends of the flexible partition plate; a second threaded hole located behind the first threaded hole is formed in the inner wall of the containing cavity, the flexible partition plate comprises a limiting part in the middle, a fixing part at the end and a transition part connecting the limiting part and the fixing part, and the transition part is of an arc-shaped structure. According to the utility model, the problem that the minimum safety interval is not set when the existing photovoltaic direct-current molded case circuit breaker is installed is solved, and the safety of the photovoltaic direct-current molded case circuit breaker in use is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and specifically relates to a photovoltaic DC molded case circuit breaker. Background Art

[0002] Photovoltaic DC molded case circuit breaker is a type of circuit breaker, which is used in photovoltaic DC circuits to protect against circuit overload and short circuit. Molded case circuit breakers have the advantages of low cost, efficient assembly and high protection.

[0003] A Chinese patent application numbered CN2020100921647 discloses a circuit breaker, which facilitates miniaturization of the circuit breaker by providing an integrally formed residual current analysis drive module on an insulating housing.

[0004] Existing photovoltaic DC molded case circuit breakers are gradually becoming smaller. When in use, they need to set a minimum safety interval between adjacent photovoltaic DC molded case circuit breakers according to different models and powers to avoid mutual influence between adjacent photovoltaic DC molded case circuit breakers. However, traditional photovoltaic DC molded case circuit breakers rely on manual judgment of the minimum safety interval by staff, which has low accuracy and is prone to safety hazards.

[0005] In view of this, this application is hereby filed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a photovoltaic DC molded case circuit breaker to achieve the purpose of setting a minimum safety interval when adjacent photovoltaic DC molded case circuit breakers are installed.

[0007] In order to solve the above technical problems, the utility model provides a photovoltaic DC molded case circuit breaker, a shell, and a cavity is provided inside the shell; the side wall of the shell is provided with an installation channel, the installation channel and the cavity are connected through a connecting channel, a flexible partition is slidably connected in the installation channel, the top and bottom of the flexible partition are symmetrically arranged, the middle part of the flexible partition is a rectangular structure, both ends of the flexible partition are located in the cavity, both ends of the flexible partition are provided with a threaded hole one, the inner wall of the cavity is provided with a threaded hole two located behind the threaded hole one, and the threaded hole two and the threaded hole one are respectively located in two parallel horizontal planes.

[0008] Furthermore, the flexible partition includes a limiting portion in the middle, a fixing portion at the end, and a transition portion connecting the limiting portion and the fixing portion, the transition portion is an arc-shaped structure, and the limiting portion and the fixing portion are respectively located in two parallel vertical planes.

[0009] Furthermore, the transition portion is slidably connected in the connecting channel, and the transition portion is made of a flexible insulating rubber material.

[0010] Furthermore, the inner wall of the housing cavity of the shell is provided with a vertically arranged sliding channel, the sliding channel is connected to the connecting channel, the threaded hole one is located at the end of the sliding channel away from the connecting channel, the threaded hole two is located at the end of the sliding channel close to the connecting channel, the fixing part moves from the sliding channel to the connecting channel, and the threaded hole one is coaxially arranged with the threaded hole two, and the fixing part is made of a flexible insulating rubber material.

[0011] Furthermore, the number of the installation channels is two, and the two installation channels are symmetrically arranged on the outer walls on both sides of the shell.

[0012] Furthermore, the outer wall of the shell is respectively provided with a wiring port 1, a wiring port 2, a detection button and a paddle, the top and the bottom of the shell are provided with partitions, and a protective cover is installed on the top of the shell.

[0013] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0014] 1. In the utility model, a flexible partition consisting of a limiting portion, a fixing portion, and a transition portion is provided. During installation, the limiting portion is moved out of the installation channel, so that adjacent limiting portions of adjacent photovoltaic DC molded case circuit breakers abut against each other during installation, so that there is a minimum safety interval between adjacent photovoltaic DC molded case circuit breakers, thereby ensuring the safety performance of the photovoltaic DC molded case circuit breakers during use.

[0015] 2. In the utility model, by staggering the threaded hole one and the threaded hole two, when installing the photovoltaic DC molded case circuit breaker, the fixing part needs to be moved from the sliding channel to the connecting channel, so that the threaded hole one and the threaded hole two are coaxially arranged, and the shell is fixed by tightening bolts, and the limiting part is moved out of the installation channel. The structure is simple and the design is reasonable, which avoids the possibility that the staff forgets to move the limiting part out of the installation channel, and ensures the safety performance of the photovoltaic DC molded case circuit breaker when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a photovoltaic DC molded case circuit breaker when it is not installed;

[0018] Figure 2 It is a structural schematic diagram of a flexible partition when a photovoltaic DC molded case circuit breaker is not installed;

[0019] Figure 3 It is a schematic diagram of the structure of a photovoltaic DC molded case circuit breaker during installation;

[0020] Figure 4 The diagram is a structural diagram of a flexible partition when installed in a photovoltaic DC molded case circuit breaker.

[0021] Numbers in the figure:

[0022] 10. Shell; 11. Wiring port 1; 12. Pick; 13. Wiring port 2; 14. Installation channel;

[0023] 20. Flexible partition; 21. Limiting portion; 22. Transition portion; 23. Fixing portion; 24. Threaded hole 1.

[0024] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The utility model achieves the purpose of setting a minimum safety interval when adjacent photovoltaic DC molded case circuit breakers are installed by providing a flexible partition 20.

[0029] like Figures 1 to 4As shown, the utility model provides a photovoltaic DC molded case circuit breaker.

[0030] Specifically, by Figure 1-4 The invention provides a housing 10, wherein the housing 10 has a cavity therein; a side wall of the housing 10 is provided with an installation channel 14, and the number of the installation channels 14 is two. The two installation channels 14 are symmetrically arranged on the outer walls of both sides of the housing 10, and the two installation channels 14 are connected to the cavity through a connecting channel. A flexible partition 20 is slidably connected in the installation channel 14, and the top and bottom of the flexible partition 20 are symmetrically arranged. The middle part of the flexible partition 20 is a rectangular structure, and both ends of the flexible partition 20 are located in the cavity. Both ends of the flexible partition 20 are provided with a threaded hole 1 24, and the inner wall of the cavity is provided with a threaded hole 2 located behind the threaded hole 1 24, and the threaded hole 2 and the threaded hole 1 24 are respectively located in two parallel horizontal planes, and the outer wall of the housing 10 is respectively provided with a wiring port 1 11, a wiring port 2 13, a detection button and a paddle 12, and the top and bottom of the housing 10 are provided with partitions, and a protective cover is installed on the top of the housing 10.

[0031] In the utility model, during installation, the middle part of the flexible partition 20 is moved out of the installation channel 14. During installation, two adjacent flexible partitions 20 are abutted against each other to set a minimum safety interval to ensure the safety of the photovoltaic DC molded case circuit breaker during use.

[0032] Furthermore, as a specific implementation of the utility model, the utility model provides a photovoltaic DC molded case circuit breaker.

[0033] Specifically, Figure 1-4 As shown, the flexible partition 20 includes a limiting portion 21 in the middle, a fixing portion 23 at the end, and a transition portion 22 connecting the limiting portion 21 and the fixing portion 23. The transition portion 22 is an arc-shaped structure. The limiting portion 21 and the fixing portion 23 are respectively located in two parallel vertical planes. The transition portion 22 is slidably connected in the connecting channel. The transition portion 22 is made of a flexible insulating rubber material. The inner wall of the cavity of the shell 10 is provided with a vertically arranged sliding channel, and the sliding channel is connected to the connecting channel. The threaded hole 1 24 is located at one end of the sliding channel away from the connecting channel, and the threaded hole 2 is located at one end of the sliding channel close to the connecting channel. The fixing portion 23 is made of a flexible insulating rubber material.

[0034] In the present invention, the fixing portion 23 moves from the sliding channel to the connecting channel, and the threaded hole 1 24 is coaxially arranged with the threaded hole 2, and the housing 10 is installed and fixed by bolts, the threaded hole 1 24 and the threaded hole 2, and the limiting portion 21 is moved out from the installation channel 14.

[0035] Working principle: When the photovoltaic DC molded case circuit breaker is not installed, the limiting part 21 on the flexible partition 20 is located in the installation channel 14, and the end of the flexible partition 20 blocks the threaded hole 2. When the photovoltaic DC molded case circuit breaker is installed, the fixing part 23 of the flexible partition 20 moves from the sliding channel to the connecting channel, and the threaded hole 1 24 is coaxially arranged with the threaded hole 2. The shell 10 is installed and fixed by bolts, threaded hole 1 24 and threaded hole 2. The limiting part 21 is moved out of the installation channel 14, and the two adjacent flexible partitions 20 are abutted against each other, and a minimum safety interval is set to ensure the safety of the photovoltaic DC molded case circuit breaker during use.

[0036] The above description is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A photovoltaic DC molded case circuit breaker, comprising a housing (10), wherein a cavity is provided inside the housing (10); characterized in that: The side wall of the shell (10) is provided with an installation channel (14), the installation channel (14) is connected to the cavity through a connecting channel, a flexible partition (20) is slidably connected in the installation channel (14), the top and bottom of the flexible partition (20) are symmetrically arranged, the middle part of the flexible partition (20) is a rectangular parallelepiped structure, both ends of the flexible partition (20) are located in the cavity, both ends of the flexible partition (20) are provided with a threaded hole (24), the inner wall of the cavity is provided with a threaded hole (2) located behind the threaded hole (24), and the threaded hole (2) and the threaded hole (24) are respectively located in two parallel horizontal planes.

2. A photovoltaic DC molded case circuit breaker according to claim 1, characterized in that: The flexible partition (20) comprises a limiting portion (21) in the middle, a fixing portion (23) at the end, and a transition portion (22) connecting the limiting portion (21) and the fixing portion (23); the transition portion (22) is an arc-shaped structure; the limiting portion (21) and the fixing portion (23) are respectively located in two parallel vertical planes.

3. A photovoltaic DC molded case circuit breaker according to claim 2, characterized in that: The transition part (22) is slidably connected in the connection channel, and the transition part (22) is made of a flexible insulating rubber material.

4. A photovoltaic DC molded case circuit breaker according to claim 2, characterized in that: The inner wall of the housing cavity of the shell (10) is provided with a vertically arranged sliding channel, the sliding channel is connected to the connecting channel, the first threaded hole (24) is located at an end of the sliding channel away from the connecting channel, the second threaded hole is located at an end of the sliding channel close to the connecting channel, and the fixing portion (23) is made of a flexible insulating rubber material.

5. A photovoltaic DC molded case circuit breaker according to claim 1, characterized in that: The number of the installation channels (14) is two, and the two installation channels (14) are symmetrically arranged on the outer walls of both sides of the housing (10).

6. A photovoltaic DC molded case circuit breaker according to claim 1, characterized in that: The outer wall of the shell (10) is respectively provided with a first wiring port (11), a second wiring port (13), a detection button and a paddle (12); the top and bottom of the shell (10) are both provided with partitions; and a protective cover is installed on the top of the shell (10).

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