Solar photovoltaic circuit breaker

Abstract

A solar photovoltaic circuit breaker comprises a circuit breaker shell, a circuit breaker body and a protection cover, the circuit breaker body is fixedly installed in the circuit breaker shell, solar photovoltaic circuit breaker protection structures are arranged on the two sides of the circuit breaker shell, and each solar photovoltaic circuit breaker protection structure comprises a sliding groove, an installation base and a protection cavity. The multiple sliding grooves are fixedly installed at the front end of the outer wall of the circuit breaker shell, and the inner sides of the multiple sliding grooves are slidably connected with sliding blocks. According to the solar photovoltaic circuit breaker, the circuit breaker shell can be tightly attached to the position where the circuit breaker shell needs to be installed through the installation base, then screwing and fixing are achieved by screwing the installation bolts, and at the moment, the protection covers sliding towards the middle on the two sides can buckle the circuit breaker shell inside to achieve the protection effect; a result of closing and protecting an internal circuit breaker shell is achieved by sliding to two sides, damage and influence of external factors when the circuit breaker is installed in an outdoor environment are reduced, and the service life of the solar photovoltaic circuit breaker is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker for solar photovoltaics. Background Art

[0002] Photovoltaic circuit breaker is one of the key equipment in photovoltaic power generation system. Photovoltaic power generation system is composed of solar panels, inverter, controller and circuit breaker. The inverter converts direct current into alternating current; the controller adjusts and controls the output power of the inverter according to input voltage, current and other data information; the circuit breaker is used to isolate direct current and mains power to ensure the safe and stable operation of the photovoltaic power station.

[0003] For example, a photovoltaic power generation circuit breaker with patent number CN218867017U uses an extrusion spring and an extrusion block to squeeze and limit the terminal block after the terminal is placed in the terminal hole, thereby preventing the terminal from moving in the terminal hole and improving the stability of the connection between the main terminal and the terminal.

[0004] However, there are still some problems when using the above-mentioned photovoltaic power generation circuit breaker. For example, the above-mentioned photovoltaic power generation circuit breaker is installed at a designated position to connect with the connecting line of the solar photovoltaic power generation device. However, the solar photovoltaic power generation device is generally installed in an outdoor environment. Therefore, the photovoltaic power generation circuit breaker will not be operated and maintained too much when it is in standby state in the outdoor environment. However, the photovoltaic power generation circuit breaker installed in the outdoor environment will inevitably be eroded by wind and sun in the long run. The surface structure of the existing photovoltaic power generation circuit breaker is basically completely exposed in the external space, so it is often eroded and damaged by the external environment. Therefore, the service life of the existing photovoltaic power generation circuit breaker is not as long as it actually is. Summary of the invention

[0005] The utility model aims to solve the problems existing in the above-mentioned prior art and provide a solar photovoltaic circuit breaker to achieve the function and effect of longer service life.

[0006] The utility model solves the technical problem by adopting the following technical solution: a solar photovoltaic circuit breaker, comprising a circuit breaker housing, a circuit breaker body and a protective cover, wherein the circuit breaker body is fixedly installed inside the circuit breaker housing, and solar photovoltaic circuit breaker protection structures are arranged on both sides of the circuit breaker housing, and the solar photovoltaic circuit breaker protection structure comprises a slide groove, a mounting seat and a protection cavity, a plurality of the slide grooves are fixedly installed on the front end of the outer wall of the circuit breaker housing, a plurality of slide grooves are slidably connected to the inner side of a plurality of slide grooves, one end of a plurality of slide blocks is fixedly connected to the inner wall of the protective cover, a plurality of mounting seats are fixedly connected to the side wall of the circuit breaker housing, a plurality of mounting seats are threadedly connected to the inner side of a plurality of mounting bolts, and two protective cavities are fixedly opened. It is arranged inside the two protective covers, and the outer walls of the two protective covers are fixedly provided with reserved grooves. The protective covers can be driven to slide along the fixed direction of the grooves through multiple sliders. One end of the multiple sliders is fixedly connected to the inner wall of the protective cover. The mounting seat facilitates the circuit breaker housing to be tightly attached to the required installation position, and then the mounting bolts are tightened and fixed. At this time, the protective covers sliding toward the middle on both sides will buckle the circuit breaker housing inside to protect it. The protective cavity and the circuit breaker housing are closed to ensure the protection effect. The reserved grooves make way for the wiring ports encountered during the sliding process, and the result of closing and protecting the internal circuit breaker housing is achieved by sliding to both sides, thereby reducing the damage caused by external factors when installed in an outdoor environment.

[0007] Further improvement, a protective cover docking structure is fixedly provided on both sides of the protective cover;

[0008] The protective cover docking structure includes a positioning block, a push rod and a protrusion;

[0009] The two positioning blocks are fixedly installed on both sides of the outer wall of the protective cover, and the inner sides of the two positioning blocks are slidably connected with two pushing rods, and the outer sides of the two pushing rods are fixedly sleeved with intercepting pieces, and the outer sides of the two pushing rods are movably sleeved with springs, and the other ends of the two pushing rods are fixedly installed with limiting plates, and the two protrusions are fixedly installed on one side of the end of the pushing rod. After the inner sides of the two protective covers are closed, the end of the pushing rod driven by the positioning block will match the position of the fixing frame above the protective cover on the other side. At this time, the operator can rotate the pushing rod to make the protrusion vertically upward, and then the pushing rod pulls the compression spring backward. This is when the rotating protrusion is flipped ninety degrees, the protrusion is pressed against the side wall of the other side of the fixing frame, and the limiting plate at the other end of the pushing rod will fit on the side wall of the positioning block. Under the action of the spring pushing elastic force to both sides, the protrusions and the limiting plates on both sides will hook the sliding of the fixing frame and the positioning block. At this time, the two closed protective covers are not easily separated.

[0010] For further improvement, the front ends of the two springs are movably connected to the inner side of the intercepting piece, the other ends of the two springs are movably connected to the positioning block, and the inner sides of the two protective covers are slidably connected to the circuit breaker housing.

[0011] For further improvement, two fixing frames are fixedly installed on the other side of the two protections, and the inner sides of the two fixing frames are fixed with through grooves. The inner sides of the two through grooves are slidingly connected to the ends of the push rods, and the outer sides of the two protrusions are movably connected to the side walls of the through grooves.

[0012] Further improvement, a protective layer is fixedly installed on the outside of the circuit breaker body, and reinforcement plates are fixedly connected to the outsides of the two protective layers. The two reinforcement plates are arranged relatively parallel to each other, and ventilation and heat dissipation holes are fixedly opened on the outer walls of the two protective covers. The protective layer is made of a relatively soft rubber material with a strong shock absorption effect. The protective layer can be arranged on both sides of the circuit breaker body to reduce the external impact force. The reinforcement plates are made of a strong, wear-resistant and pressure-resistant aluminum alloy material. The reinforcement plates on both sides of the circuit breaker body can play a role in strengthening support and improving the overall strength of the circuit breaker casing. The ventilation and heat dissipation holes adopt two holes with opposite positions, and the external air can flow along the ventilation and heat dissipation holes inside the protective cover to accelerate the heat dissipation effect.

[0013] For further improvement, both ends of the circuit breaker housing are fixedly connected with wiring ports, and the outer sides of the plurality of wiring ports are slidably connected with the inner sides of the reserved grooves.

[0014] The beneficial effect of the utility model is that the utility model can drive the protective cover to slide along the fixed direction of the slide groove through multiple sliders, and the mounting seat is convenient for the circuit breaker housing to be closely attached to the required installation position, and then tightened and fixed by screwing the mounting bolts. At this time, the protective covers sliding toward the middle on both sides will buckle the circuit breaker housing inside to play a protective effect, and the result of closing and protecting the internal circuit breaker housing is achieved by sliding to both sides, which reduces the damage caused by external factors when installed in an outdoor environment and improves the service life of the circuit breaker for solar photovoltaic. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 A front cross-sectional schematic diagram of

[0017] Figure 3 for Figure 1 A schematic top view of the top surface;

[0018] Figure 4 for Figure 2 A magnified cross-sectional view of part A;

[0019] Figure 5 for Figure 2 An enlarged cross-sectional view of part B;

[0020] Figure 6 for Figure 2 Enlarged cross-sectional view of part C.

[0021] Explanation of the accompanying drawings: In the figure: 1. circuit breaker housing, 2. circuit breaker body, 3. wiring port, 4. protective cover, 5. solar photovoltaic circuit breaker protection structure, 51. slide groove, 52. slider, 53. reserved groove, 54. mounting bolt, 55. mounting seat, 56. protective cavity, 6. protective cover docking structure, 61. positioning block, 62. limit plate, 63. push rod, 64. spring, 65. intercepting piece, 66. protrusion, 71. fixing frame, 72. through groove, 81. reinforcement plate, 82. protective layer, 9. ventilation and heat dissipation holes. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] Refer to the attached Figure 1-6 A solar photovoltaic circuit breaker comprises a circuit breaker housing 1, a circuit breaker body 2 and a protective cover 4. The circuit breaker body 2 is fixedly installed inside the circuit breaker housing 1. The circuit breaker body 2 belongs to the prior art that has been disclosed in a photovoltaic power generation circuit breaker in the comparative document CN218867017U. The specific structure and working principle are not described in detail again. Solar photovoltaic circuit breaker protection structures 5 are provided on both sides of the circuit breaker housing 1. The solar photovoltaic circuit breaker protection structure 5 comprises a slide groove 51, a mounting seat 55 and a protective cavity 56. A plurality of slide grooves 51 are fixedly installed on the front end of the outer wall of the circuit breaker housing 1. A plurality of slide grooves 51 are slidably connected to the inner side of the plurality of slide grooves 51 with sliders 52. The plurality of sliders 52 can drive the protective cover 4 to slide along the fixed direction of the slide groove 51.

[0024] One end of the plurality of sliders 52 is fixedly connected to the inner wall of the protective cover 4, and the plurality of mounting seats 55 are fixedly connected to the side wall of the circuit breaker housing 1. The inner sides of the plurality of mounting seats 55 are threadedly connected with a plurality of mounting bolts 54. The mounting seats 55 facilitate the circuit breaker housing 1 to be closely attached to the required installation position, and then the mounting bolts 54 are screwed to achieve tightening and fixing. At this time, the protective covers 4 sliding toward the middle on both sides will buckle the circuit breaker housing 2 inside to achieve a protective effect. Two protective cavities 56 are fixedly opened inside the two protective covers 4. The protective cavities 56 and the circuit breaker housing 1 are closed to ensure the protective effect. The outer walls of the two protective covers 4 are fixedly opened with reserved grooves 53, and the reserved grooves 53 make way for the wiring ports 3 encountered during the sliding process.

[0025] The protective cover 4 can be driven to slide along the fixed direction of the slide groove 51 by multiple sliders 52. One end of the multiple sliders 52 is fixedly connected to the inner wall of the protective cover 4. The mounting seat 55 facilitates the circuit breaker housing 1 to be closely attached to the required installation position, and then the mounting bolts 54 are screwed to achieve tightening and fixing. At this time, the protective cover 4 sliding toward the middle on both sides will buckle the circuit breaker housing 2 inside to achieve a protective effect. The protective cavity 56 and the circuit breaker housing 1 are closed to ensure the protection effect. The reserved groove 53 makes way for the wiring port 3 encountered during the sliding process. The result of closing and protecting the internal circuit breaker housing 1 is achieved by sliding to both sides, which reduces the damage caused by external factors when installed in an outdoor environment and improves the service life of the solar photovoltaic circuit breaker.

[0026] A protective cover docking structure 6 is fixedly provided on both sides of the protective cover 4. The protective cover docking structure 6 includes a positioning block 61, a push rod 63 and a protrusion 66. The two positioning blocks 61 are fixedly installed on both sides of the outer wall of the protective cover 4. The inner sides of the two positioning blocks 61 are slidably connected with two push rods 63. The outer sides of the two push rods 63 are fixedly sleeved with an intercepting piece 65. The outer sides of the two push rods 63 are movably sleeved with a spring 64. The other ends of the two push rods 63 are fixedly installed with a limit plate 62. After the inner sides of the two protective covers 4 are closed, the end of the push rod 63 driven by the positioning block 61 will be connected with the fixing frame 71 above the protective cover 4 on the other side. The positions are consistent. At this time, the operator can rotate the push rod 63 to make the protrusion 66 vertically upward, and then push the rod 63 to pull the compression spring 64 backward. This is when the rotating protrusion 66 is flipped ninety degrees, and the protrusion 66 is pressed against the other side wall of the fixing frame 71, and the limit plate 62 at the other end of the push rod 63 will fit on the side wall of the positioning block 61. Under the action of the elastic force of the spring 64 pushing to both sides, the protrusions 66 and the limit plate 62 on both sides will hook the sliding of the fixing frame 71 and the positioning block 61. At this time, the two closed protective covers 4 are not easily separated, and the two protrusions 66 are fixedly installed on one side of the end of the push rod 63.

[0027] The front ends of the two springs 64 are movably connected to the inner side of the intercepting piece 65, the other ends of the two springs 64 are movably connected to the positioning block 61, the inner sides of the two protective covers 4 are slidably connected to the circuit breaker housing 1, and two fixing frames 71 are fixedly installed on the upper side of the other side of the two protective covers 4. The inner sides of the two fixing frames 71 are fixedly provided with through grooves 72, the inner sides of the two through grooves 72 are slidably connected to the ends of the push rods 63, and the outer sides of the two protrusions 66 are movably connected to the side walls of the through grooves 72.

[0028] A protective layer 82 is fixedly installed on the outside of the circuit breaker body 2. The protective layer 82 is made of a relatively soft rubber material with a strong shock-absorbing effect. The protective layer 82 can be arranged on both sides of the circuit breaker body 2 to reduce the external impact force. The outer sides of the two protective layers 82 are fixedly connected with reinforcement plates 81. The reinforcement plates 81 are made of a strong, wear-resistant and pressure-resistant aluminum alloy material. The reinforcement plates 81 on both sides of the circuit breaker body 2 can play a role in strengthening support and improving the overall strength of the circuit breaker housing 1. The two reinforcement plates 81 are relatively parallel to each other. The outer walls of the two protective covers 4 are fixedly provided with ventilation and heat dissipation holes 9. The ventilation and heat dissipation holes 9 are two holes with opposite openings. External air can flow along the ventilation and heat dissipation holes 9 inside the protective cover 4 to accelerate the heat dissipation effect. The two ends of the circuit breaker housing 1 are fixedly connected with wiring ports 3. The wiring port 3 is a prior art that has been disclosed in a photovoltaic power generation circuit breaker in the comparative document CN218867017U, so no further explanation is given. The outer sides of the multiple wiring ports 3 are slidably connected to the inner side of the reserved groove 53.

[0029] Working principle:

[0030] When the solar photovoltaic circuit breaker is installed near the solar photovoltaic power generation device, it is used to connect the solar photovoltaic power generation device to isolate the DC and the mains to ensure the safe and stable operation of the photovoltaic power station:

[0031] Sliding protection structure of solar photovoltaic circuit breaker:

[0032] The protective cover 4 can be driven to slide along the fixed direction of the slide groove 51 by multiple sliders 52. One end of the multiple sliders 52 is fixedly connected to the inner wall of the protective cover 4. The mounting seat 55 is convenient for the circuit breaker housing 1 to be closely attached to the required installation position, and then the mounting bolts 54 are screwed to achieve tightening and fixing. At this time, the protective cover 4 sliding toward the middle on both sides will buckle the circuit breaker housing 2 inside to achieve a protective effect. The protective cavity 56 and the circuit breaker housing 1 are closed to ensure the protective effect. The reserved groove 53 makes way for the wiring port 3 encountered during the sliding process. The result of closing and protecting the internal circuit breaker housing 1 is achieved by sliding to both sides, which reduces the damage caused by external factors when installed in an outdoor environment;

[0033] The protective cover closing and positioning structure of the solar photovoltaic circuit breaker:

[0034] After the inner sides of the two protective covers 4 are closed, the end of the push rod 63 driven by the positioning block 61 will match the position of the fixing frame 71 above the other side protective cover 4. At this time, the operator can rotate the push rod 63 to make the protrusion 66 vertically upward, and then push the rod 63 to pull the compression spring 64 backward. This is when the rotating protrusion 66 is turned 90 degrees, and the protrusion 66 is pressed against the other side wall of the fixing frame 71, and the limit plate 62 at the other end of the push rod 63 will fit on the side wall of the positioning block 61. Under the action of the elastic force of the spring 64 to both sides, the protrusions 66 and the limit plate 62 on both sides will hook the sliding of the fixing frame 71 and the positioning block 61. At this time, the two closed protective covers 4 are not easy to separate;

[0035] Strengthened structure and ventilation and heat dissipation structure of solar photovoltaic circuit breakers:

[0036] The protective layer 82 is made of a relatively soft rubber material with a strong shock-absorbing effect. The protective layer 82 can be arranged on both sides of the circuit breaker body 2 to reduce the external impact force. The reinforcement plate 81 is made of a strong, wear-resistant and pressure-resistant aluminum alloy material. The reinforcement plate 81 on both sides of the circuit breaker body 2 can play a role in strengthening support and improving the overall strength of the circuit breaker housing 1. The ventilation and heat dissipation holes 9 are two holes with opposite positions. External air can flow along the ventilation and heat dissipation holes 9 inside the protective cover 4 to accelerate the heat dissipation effect.

[0037] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A solar photovoltaic circuit breaker, comprising a circuit breaker housing (1), a circuit breaker body (2) and a protective cover (4), wherein: The circuit breaker body (2) is fixedly mounted inside the circuit breaker housing (1); solar photovoltaic circuit breaker protection structures (5) are provided on both sides of the circuit breaker housing (1); the solar photovoltaic circuit breaker protection structure (5) comprises a slide groove (51), a mounting seat (55) and a protection cavity (56); a plurality of the slide grooves (51) are fixedly mounted on the front end of the outer wall of the circuit breaker housing (1); a plurality of sliders (52) are slidably connected to the inner sides of the plurality of slide grooves (51); one end of the plurality of sliders (52) is fixedly connected to the inner wall of the protection cover (4); a plurality of the mounting seats (55) are fixedly connected to the side wall of the circuit breaker housing (1); a plurality of mounting bolts (54) are threadedly connected to the inner sides of the plurality of mounting seats (55); two protection cavities (56) are fixedly opened inside the two protection covers (4); and the outer walls of the two protection covers (4) are fixedly provided with reserved grooves (53).

2. A solar photovoltaic circuit breaker according to claim 1, characterized in that: Protective cover docking structures (6) are fixedly provided on both sides of the protective cover (4); The protective cover docking structure (6) comprises a positioning block (61), a push rod (63) and a protrusion (66); The two positioning blocks (61) are fixedly mounted on both sides of the outer wall of the protective cover (4); the inner sides of the two positioning blocks (61) are slidably connected to two push rods (63); the outer sides of the two push rods (63) are fixedly sleeved with intercepting plates (65); the outer sides of the two push rods (63) are movably sleeved with springs (64); the other ends of the two push rods (63) are fixedly mounted with limiting plates (62); and the two protrusions (66) are fixedly mounted on one side of the end of the push rods (63).

3. A solar photovoltaic circuit breaker according to claim 2, characterized in that: The front ends of the two springs (64) are movably connected to the inner side of the interception piece (65), the other ends of the two springs (64) are movably connected to the positioning block (61), and the inner sides of the two protective covers (4) are slidably connected to the circuit breaker housing (1).

4. A solar photovoltaic circuit breaker according to claim 2, characterized in that: Two fixing frames (71) are fixedly mounted on the upper side of the other side of the two protective covers (4); a through slot (72) is fixedly provided on the inner side of the two fixing frames (71); the inner sides of the two through slots (72) are slidably connected to the end of the push rod (63); and the outer sides of the two protrusions (66) are movably connected to the side walls of the through slot (72).

5. A solar photovoltaic circuit breaker according to claim 1, characterized in that: A protective layer (82) is fixedly mounted on the outer side of the circuit breaker body (2); two reinforcement plates (81) are fixedly connected to the outer sides of the two protective layers (82); the two reinforcement plates (81) are arranged relatively parallel to each other; and ventilation and heat dissipation holes (9) are fixedly opened on the outer walls of the two protective covers (4).

6. A solar photovoltaic circuit breaker according to claim 1, characterized in that: Both ends of the circuit breaker housing (1) are fixedly connected with wiring ports (3), and the outer sides of the plurality of wiring ports (3) are slidably connected to the inner sides of the reserved grooves (53).

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