Photovoltaic power station grid-connected protection device

Abstract

The utility model discloses a photovoltaic power station grid-connected protection device in the field of grid-connected protection, which comprises a shell, a rotating door rotatably connected to the side surface of the shell, a water guide plate connected to the top of the shell, a handle connected to the outer end surface of the rotating door, a mounting plate connected to the side surface of the inner wall of the shell, a grid-connected assembly connected to the mounting plate, and a plurality of indicating lamps connected to the mounting plate. The mounting plate is connected with a butt joint component, the bottom of the shell is connected with a fixing component, and the bottom of the shell is rotationally connected with a rotating component. The device can effectively improve the connecting and fixing effect of a cable, and the rotating component at the bottom of the shell can quickly limit and clamp the cable; therefore, the influence of the self weight of the cable on the top butt joint is avoided, and the device avoids the use of structures such as a locking piece and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of grid-connected protection, in particular to a photovoltaic power station grid-connected protection device. Background Art

[0002] Distributed photovoltaic power generation is a new and promising method for power generation and comprehensive energy utilization. It promotes the principles of local generation, local grid connection, local conversion, and local use. This not only effectively increases the power generation of photovoltaic power plants of similar size, but also effectively addresses power losses during voltage boosting and long-distance transportation. Currently, most distributed photovoltaic power generation systems are directly connected to the grid via circuit breakers. The grid cannot monitor the operating status of the distributed photovoltaic power generation system, and there are no protective measures at the grid connection point. Failures in the grid or distributed photovoltaic power generation system, such as overload, pose a safety hazard.

[0003] Chinese patent publication number CN220421136U discloses a photovoltaic power station grid-connected protection device, relating to the field of grid-connected box protection. The utility model includes a grid-connected box body, a mounting hole formed at the bottom of the grid-connected box body, a cable disposed within the mounting hole, and a protective mechanism disposed on the outer surface of the cable. The protective mechanism includes a sleeve, a mounting groove disposed above the outer surface of the sleeve, a spring disposed within the mounting groove, and a wedge ring disposed on top of the spring. The utility model utilizes the sleeve, spring, and wedge ring to first sleeve two sleeves onto the outer surface of the cable. Then, by moving the two sleeves upward, the spring within the mounting groove is compressed. After the sleeves are passed through the mounting hole, the wedge ring's shape characteristics are utilized to engage the sleeves within the mounting hole. Finally, the two sleeves are secured using studs, thereby preventing direct contact between the cable and the mounting hole and improving cable protection.

[0004] However, the above-mentioned disclosed solution has the following shortcomings: the above-mentioned solution protects the grid-connected components through the shell structure. In actual use, the above-mentioned device enters the cable from the bottom. When the cable is docked and connected to the above-mentioned device, due to the weight of the cable itself, the weight of the cable will pull the cable docking point during connection, thereby posing a risk of accidental loosening. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the present invention to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] The purpose of the present invention is to address the technical problems existing in the background technology. The present invention proposes a photovoltaic power station grid-connected protection device. The present invention can effectively improve the connection and fixing effect of the cable through the device. The rotating part at the bottom of the device shell can quickly limit and clamp the cable, thereby avoiding the influence of the cable's own weight on the top docking point, and the device avoids the use of structures such as locking parts.

[0007] The utility model proposes a photovoltaic power station grid-connected protection device, which includes a shell and a rotating door rotatably connected to the side thereof, a water guide plate connected to the top of the shell, a handle connected to the outer end face of the rotating door, a mounting plate connected to the side of the inner wall of the shell, the mounting plate connected to the grid-connected component, a plurality of indicator lights connected to the mounting plate, a docking component connected to the mounting plate, a fixing component connected to the bottom of the shell, and a rotating component rotatably connected to the bottom of the shell.

[0008] By adopting the above technical solution, this solution can reduce the difficulty of operating and using the device through the combination of grid-connected components and indicator lights, and can ensure a stable connection during the docking process between the cable and the device through the docking components.

[0009] Preferably, the docking component includes a docking plate connected to the mounting plate, the mounting plate is threadedly connected to a locking member, the outer arc surface of the locking member is slidingly connected to a limiting plate, two locking members are symmetrically arranged at both ends of the limiting plate, the bottom of the limiting plate contacts the top of the docking plate, and the two locking members are symmetrically arranged on both sides of the docking plate.

[0010] By adopting the above technical solution, the present solution can ensure that the cable butt end is in sufficient close contact with the butt plate through the combination of the locking member and the limit plate, thereby ensuring the stability of the circuit connection of the device.

[0011] Preferably, the fixing component includes a fixing shell connected to the bottom of the inner wall of the shell, a fixing ring is connected to the top of the fixing shell, a connecting column is connected to the bottom of the fixing ring, and the other end of the connecting column is connected to a guide member.

[0012] By adopting the above technical solution, the present solution can protect the rotating parts through the fixed ring and the fixed shell, and at the same time can ensure that the guide member does not move during the rotation of the turntable.

[0013] Preferably, the rotating component includes a turntable rotatably connected to the bottom of the shell, the fixed shell cover is arranged on the outside of the turntable, an arc-shaped groove is provided on the top of the turntable, and the inner wall of the arc-shaped groove is slidably connected to the bottom of the guide member.

[0014] By adopting the above technical solution, the present solution can effectively improve the rotation stability of the device through the combined structure of the arc-shaped groove and the turntable, thereby avoiding the situation where the turntable rotates excessively.

[0015] Preferably, the top of the turntable is connected to a spring bracket, a sliding groove is provided on the top of the turntable, a sliding member is slidably connected to the top of the turntable, a spring is connected to the side of the sliding member, the other end of the spring is connected to the spring bracket, and the bottom of the sliding member is slidably connected to the sliding groove.

[0016] By adopting the above technical solution, this solution can ensure that the arc-shaped clamping part can always be in contact with the outer arc surface of the cable during the cable entry process through the structure of the spring and the sliding part, thereby facilitating subsequent rotation transmission operations.

[0017] Preferably, the side of the sliding member away from the spring is connected to an arc-shaped clamping member, the side of the arc-shaped clamping member is connected to an anti-slip pad, the bottom of the arc-shaped clamping member is provided with a conical guide groove, the bottom of the shell is provided with a through hole, and the arc-shaped clamping member is arranged around the through hole.

[0018] By adopting the above technical solution, the present solution can facilitate the cable to squeeze the arc-shaped clamping member when entering the interior of the housing through the tapered guide groove, thereby facilitating the entry of the cable.

[0019] In summary, the present invention has at least one of the following beneficial effects:

[0020] This device uses a rotation method to achieve a locking and limiting effect on the cable, which can reduce the operating difficulty of the device and improve the operating efficiency of the device. The guide structure of the device can prevent the arc-shaped clamping member from sliding when the device is in a locked state, thereby ensuring the clamping stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a front view of an embodiment of a photovoltaic power station grid-connected protection device of the utility model;

[0023] Figure 2 This is a structural diagram of the fixing component in an embodiment of the present utility model;

[0024] Figure 3 This is a structural diagram of a guide member in an embodiment of the present utility model;

[0025] Figure 4 This is a structural diagram of a tapered guide groove in an embodiment of the present utility model;

[0026] Figure numerals: 1. Shell; 2. Rotating door; 3. Handle; 4. Water guide plate; 5. Mounting plate; 6. Grid-connected component; 7. Indicator light; 8. Docking component; 801. Docking plate; 802. Limiting plate; 803. Locking member; 9. Fixed component; 901. Fixed ring; 902. Fixed shell; 903. Connecting column; 904. Guide member; 10. Rotating component; 1001. Turntable; 1002. Arc groove; 1003. Spring bracket; 1004. Sliding groove; 1005. Spring; 1006. Sliding member; 1007. Arc clamping member; 1008. Anti-slip pad; 1009. Conical guide groove. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 The utility model is described in further detail.

[0028] Example 1, as Figures 1-4 As shown, in order to solve the existing problems, in this embodiment, the utility model discloses a photovoltaic power station grid-connected protection device, including a shell 1 and a rotating door 2 rotatably connected to its side, a water guide plate 4 is connected to the top of the shell 1, a handle 3 is connected to the outer end face of the rotating door 2, a mounting plate 5 is connected to the side of the inner wall of the shell 1, the mounting plate 5 is connected to the grid-connected component 6, the mounting plate 5 is connected to a plurality of indicator lights 7, the mounting plate 5 is connected to a docking component 8, the bottom of the shell 1 is connected to a fixing component 9, and the bottom of the shell 1 is rotatably connected to a rotating component 10.

[0029] The docking component 8 includes a docking plate 801 connected to the mounting plate 5, and the mounting plate 5 is threadedly connected with a locking member 803. The outer arc surface of the locking member 803 is slidingly connected to the limiting plate 802. The two locking members 803 are symmetrically arranged at both ends of the limiting plate 802. The bottom of the limiting plate 802 contacts the top of the docking plate 801, and the two locking members 803 are symmetrically arranged on both sides of the docking plate 801.

[0030] The fixing component 9 includes a fixing shell 902 connected to the bottom of the inner wall of the shell 1, a fixing ring 901 is connected to the top of the fixing shell 902, a connecting column 903 is connected to the bottom of the fixing ring 901, and the other end of the connecting column 903 is connected to a guide member 904.

[0031] The rotating component 10 includes a turntable 1001 rotatably connected to the bottom of the shell 1 , the fixed shell 902 is covered on the outside of the turntable 1001 , an arc-shaped groove 1002 is provided on the top of the turntable 1001 , and the inner wall of the arc-shaped groove 1002 is slidably connected to the bottom of the guide member 904 .

[0032] The specific working principle is: this device can achieve the effect of quickly connecting cables and locking the cables at the same time. Compared with traditional devices, this device avoids the problem of the cable's own weight affecting the connection point.

[0033] When the device is in use, the combination of the shell 1 and the rotating door 2 can achieve the protection effect of the grid-connected component 6 inside the device. When the device is docked with the cable, the cable enters the inside of the device through the through hole at the bottom of the shell 1. At this time, when the cable enters, the conical guide groove 1009 can make the arc clamping member 1007 slide in the direction away from the through hole as the cable enters. At this time, the spring 1005 is in a compressed state, and the anti-slip pad 1008 contacts and squeezes the outer arc surface of the cable. After the cable passes through the through hole, the docking end at the top of the cable is electrically connected to the docking component 8. After the docking end is connected, the cable is rotated at this time. The rotation of the cable drives the arc clamping member 1007 to rotate, and then drives the entire turntable 1001 to rotate. During the rotation of the turntable 1001, the guide Since the guide member 904 is connected to the fixed shell 902, the guide member 904 will not rotate. As a result, the side of the sliding member 1006 contacts the slope of the guide member 904 during the rotation of the turntable 1001, causing the sliding member 1006 to slide toward the through hole, thereby causing the arc-shaped clamping member 1007 to clamp and squeeze the cable, thereby improving the clamping and anti-slip effect of the device and avoiding accidental falling of the cable. When the sliding member 1006 slides to the top groove of the guide member 904, the sliding member 1006 is in a fixed state. Since the sliding member 1006 does not slide, the arc-shaped clamping member 1007 will not be accidentally loosened, thereby achieving the cable clamping and locking effect of the device. When unlocking is required, the cable is first rotated in the opposite direction to unlock the sliding member 1006.

[0034] Example 2, as Figures 1-4 As shown, in order to solve the existing problems, in this embodiment, based on the same concept as the above-mentioned embodiment 1, the photovoltaic power station grid-connected protection device also includes: the top of the turntable 1001 is connected to a spring bracket 1003, the top of the turntable 1001 is provided with a sliding groove 1004, the top of the turntable 1001 is slidably connected to a sliding member 1006, the side of the sliding member 1006 is connected to a spring 1005, the other end of the spring 1005 is connected to the spring bracket 1003, and the bottom of the sliding member 1006 is slidably connected to the sliding groove 1004.

[0035] The side of the sliding member 1006 away from the spring 1005 is connected to an arc-shaped clamping member 1007, the side of the arc-shaped clamping member 1007 is connected to an anti-slip pad 1008, the bottom of the arc-shaped clamping member 1007 is provided with a conical guide groove 1009, the bottom of the shell 1 is provided with a through hole, and the arc-shaped clamping member 1007 is arranged around the through hole.

[0036] The specific working principle is: this device can effectively improve the stability of the cable entering the interior of the device, and the conical guide groove 1009 can enable the cable to squeeze the arc clamping member 1007 outward, thereby squeezing the spring 1005, thereby achieving the cable clamping effect of this device.

[0037] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A photovoltaic power station grid-connected protection device, comprising a housing (1) and a rotating door (2) rotatably connected to the side of the housing (1), a water guide plate (4) connected to the top of the housing (1), and a handle (3) connected to the outer end surface of the rotating door (2), characterized in that: The inner wall side of the housing (1) is connected to a mounting plate (5), the mounting plate (5) is connected to a grid-connected assembly (6), the mounting plate (5) is connected to a plurality of indicator lights (7), the mounting plate (5) is connected to a docking component (8), the bottom of the housing (1) is connected to a fixed component (9), and the bottom of the housing (1) is rotatably connected to a rotating component (10).

2. A photovoltaic power station grid-connected protection device according to claim 1, characterized in that: The docking component (8) comprises a docking plate (801) connected to the mounting plate (5); the mounting plate (5) is threadedly connected to a locking member (803); the outer arc surface of the locking member (803) is slidably connected to the limiting plate (802); the two locking members (803) are symmetrically arranged at both ends of the limiting plate (802); the bottom of the limiting plate (802) contacts the top of the docking plate (801); and the two locking members (803) are symmetrically arranged on both sides of the docking plate (801).

3. A photovoltaic power station grid-connected protection device according to claim 2, characterized in that: The fixing component (9) comprises a fixing shell (902) connected to the bottom of the inner wall of the shell (1), a fixing ring (901) is connected to the top of the fixing shell (902), a connecting column (903) is connected to the bottom of the fixing ring (901), and the other end of the connecting column (903) is connected to a guide member (904).

4. A photovoltaic power station grid-connected protection device according to claim 3, characterized in that: The rotating component (10) includes a turntable (1001) rotatably connected to the bottom of the housing (1); the fixed housing (902) is covered on the outside of the turntable (1001); an arc-shaped groove (1002) is provided on the top of the turntable (1001); and the inner wall of the arc-shaped groove (1002) is slidably connected to the bottom of the guide member (904).

5. A photovoltaic power station grid-connected protection device according to claim 4, characterized in that: The top of the turntable (1001) is connected to a spring bracket (1003), the top of the turntable (1001) is provided with a sliding groove (1004), the top of the turntable (1001) is slidably connected to a sliding member (1006), the side of the sliding member (1006) is connected to a spring (1005), the other end of the spring (1005) is connected to the spring bracket (1003), and the bottom of the sliding member (1006) is slidably connected to the sliding groove (1004).

6. A photovoltaic power station grid-connected protection device according to claim 5, characterized in that: The side of the sliding member (1006) away from the spring (1005) is connected to an arc-shaped clamping member (1007), the side of the arc-shaped clamping member (1007) is connected to an anti-slip pad (1008), the bottom of the arc-shaped clamping member (1007) is provided with a conical guide groove (1009), the bottom of the shell (1) is provided with a through hole, and the arc-shaped clamping member (1007) is arranged around the through hole.

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