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CN-122017497-A - Arc fault detection device of photovoltaic energy storage inverter

CN122017497ACN 122017497 ACN122017497 ACN 122017497ACN-122017497-A

Abstract

The invention belongs to the technical field of arc fault detection and relates to an arc fault detection device of a photovoltaic energy storage inverter, which comprises a detection box, wherein two protection grooves are symmetrically formed in the side surface of the detection box, cover plates are rotatably arranged at the end parts of the protection grooves on one side of the detection box, piston plates are horizontally and hermetically connected in the protection grooves, probes are fixedly arranged in the middle parts of the protection grooves, which are close to the cover plates, respectively, a connecting piece is arranged between each piston plate and the corresponding cover plate, air inlets are formed in the top surface of one end, far away from the cover plate, of each protection groove, a plurality of inclined air blowing ports are formed in each piston plate, and the end parts of each air blowing port face the probes. The probe has the advantages that when the electric push rod is used for pushing the probe to move towards the outside of the protective groove, the connecting rod can push the cover plate to rotate upwards, so that the probe is moved out from the lower part of the cover plate, the cover plate is automatically opened when the probe is moved, separate driving is not needed, and the probe is more convenient to use.

Inventors

  • WANG JIANXIANG
  • ZHANG DONGHUA
  • WANG XIAOMING

Assignees

  • 江门市楷华智能装备有限公司

Dates

Publication Date
20260512
Application Date
20260320

Claims (8)

  1. 1. The arc fault detection device of the photovoltaic energy storage inverter is characterized by comprising a detection box (1), wherein two protection grooves (5) are symmetrically formed in the side face of the detection box (1), and a cover plate (3) is rotatably arranged at the end part of each protection groove (5) on one side of the detection box (1); The inside of each protection groove (5) is horizontally and hermetically connected with a piston plate (6), a probe (7) is fixedly arranged in the middle of one side, close to the cover plate (3), of each piston plate (6), and a connecting piece is arranged between each piston plate (6) and the corresponding cover plate (3); The top surface of one end, far away from the cover plate (3), of each protection groove (5) is provided with an air inlet (2), each piston plate (6) is provided with a plurality of inclined air blowing ports (8), and the end part of each air blowing port (8) faces towards the probe (7).
  2. 2. The arc fault detection device for the photovoltaic energy storage inverter is characterized in that the detection box (1) is internally provided with mounting grooves (16) at the end parts of each protection groove (5), an electric push rod (4) is fixedly mounted in each mounting groove (16), the telescopic end of the electric push rod (4) horizontally and hermetically slides through the end surface of the mounting groove (16) and then stretches into the corresponding protection groove (5), and the piston plate (6) is fixedly connected to the end part of the telescopic end of the electric push rod (4).
  3. 3. The arc fault detection device for the photovoltaic energy storage inverter is characterized in that a plurality of air blowing ports (8) are distributed in a circumferential array with respect to a probe (7), each air blowing port (8) is gradually inclined to the outer surface of a piston plate (6) from one end close to the probe (7) to the other end, and one-way valves are arranged on an air inlet (2) and each air blowing port (8).
  4. 4. The arc fault detection device of the photovoltaic energy storage inverter according to claim 1, wherein two limiting rods (13) are fixedly connected to one side, close to the probes (7), of each piston plate (6), the limiting rods (13) are horizontally distributed, and the two limiting rods (13) are distributed in a circumferential array with respect to the corresponding probe (7).
  5. 5. The arc fault detection device of the photovoltaic energy storage inverter is characterized in that connecting blocks (12) are fixedly connected to the side face of the detection box (1) and positioned at the top of each protection groove (5), a connecting shaft (15) penetrates through each connecting block (12) in a rotating mode, and the connecting shafts (15) are horizontally distributed; two connecting plates (14) are fixedly connected to the outer surface of the top of each cover plate (3) at intervals, the two connecting plates (14) are fixedly sleeved at two end parts of a corresponding connecting shaft (15) respectively, and the connecting plates (14) are in sliding fit with the connecting blocks (12).
  6. 6. The arc fault detection device of the photovoltaic energy storage inverter according to claim 5, wherein the connecting piece comprises a clamping block (10) and two L-shaped connecting rods (9), a clamping plate (17) is fixedly connected to the middle of one side of the clamping block (10), and the clamping plate (17) is fixedly connected to one side of the top of the cover plate (3); Two connecting rods (9) are fixedly connected to one side of the top of the piston plate (6) at intervals, a clamping plate (17) is slidably arranged between the two connecting rods (9), the connecting rods (9) sequentially consist of horizontal sections and vertical sections from one end connected with the piston plate (6) to the other end, and the vertical sections of the connecting rods (9) are movably abutted to one side of the clamping block (10).
  7. 7. The arc fault detection device of the photovoltaic energy storage inverter is characterized in that connecting blocks (12) are fixedly connected to the side face of the detection box (1) at the bottom of each protection groove (5), connecting shafts (15) penetrate through each connecting block (12) in a rotating mode, and the connecting shafts (15) are horizontally distributed; Two connecting plates (14) are fixedly connected to the outer surface of the bottom of each cover plate (3) at intervals, the two connecting plates (14) are respectively fixedly sleeved at two end parts of a corresponding connecting shaft (15), and the connecting plates (14) are in sliding fit with the connecting blocks (12); and torsion springs are sleeved at two ends of each connecting shaft (15), one end of each torsion spring is fixedly connected with the connecting block (12), and the other end of each torsion spring is fixedly connected with the connecting plate (14).
  8. 8. The device for detecting arc faults of a photovoltaic energy storage inverter according to claim 7, wherein the connecting piece comprises a pull rope (11), one end of the pull rope (11) is fixedly connected to one side of the bottom of the piston plate (6), and the other end of the pull rope (11) is fixedly connected to one side of the bottom of the cover plate (3).

Description

Arc fault detection device of photovoltaic energy storage inverter Technical Field The invention belongs to the technical field of arc fault detection, and relates to an arc fault detection device of a photovoltaic energy storage inverter. Background The photovoltaic energy storage inverter is used as core equipment of a photovoltaic power generation system and bears the key task of converting direct current into alternating current, and the operation stability of the photovoltaic energy storage inverter directly influences the system efficiency and the safety. When the terminals of the photovoltaic energy storage inverter are connected through cables, arc faults are easily generated due to the problems of ageing of lines, poor contact and the like, and if safety accidents such as fire disaster and equipment damage are possibly caused by the fact that the safety accidents are not detected in time, the arc fault detection device becomes a key component for guaranteeing system safety. The utility model discloses a photovoltaic inverter arc fault detection device in China patent CN202323214169.0, the storage component comprises two storage cavities which are formed in the storage box, limiting blocks are arranged in the two storage cavities, two probes are respectively arranged in the two limiting blocks, two limiting strips are arranged on one side of the storage box, two servo motors are arranged in the storage box, one side of each servo motor is connected with a baffle through a rotating shaft, an electric push rod which is arranged in the storage box is arranged, one end of each electric push rod is fixedly connected with each limiting block, and a rubber ring is arranged on one side of each limiting block, which faces the direction of each baffle. Before the fault detection device detects, the baffle needs to be rotated away from the storage cavity through the servo motor, and then the electric push rod is operated to move out the probe, so that the operation steps of the staff are increased, and the use is not convenient. In order to solve the problems, the invention provides an arc fault detection device of a photovoltaic energy storage inverter. Disclosure of Invention In order to solve the problems in the background technology, the invention provides an arc fault detection device of a photovoltaic energy storage inverter. In order to achieve the purpose, the invention adopts the technical scheme that the device comprises a detection box, wherein two protection grooves are symmetrically formed on the side surface of the detection box, and a cover plate is rotatably arranged at the end part of each protection groove on one side of the detection box; The inside of each protection groove is horizontally and hermetically connected with a piston plate in a sliding manner, a probe is fixedly arranged in the middle of one side, close to the cover plate, of each piston plate, and a connecting piece is arranged between each piston plate and the corresponding cover plate; the top surface of one end, far away from the cover plate, of each protection groove is provided with an air inlet, each piston plate is provided with a plurality of inclined air blowing ports, and the end part of each air blowing port faces towards the probe. Further, the mounting grooves are formed in the end portions of the protection grooves in the detection box, electric push rods are fixedly mounted in the mounting grooves, the telescopic ends of the electric push rods horizontally slide in a sealing mode and penetrate through the end faces of the mounting grooves, then the telescopic ends of the electric push rods horizontally slide in a sealing mode and extend into the corresponding protection grooves, and the piston plates are fixedly connected to the end portions of the telescopic ends of the electric push rods. Further, the plurality of air blowing openings are distributed in a circumferential array with respect to the probe, each air blowing opening is gradually inclined to the outer surface of the piston plate from one end close to the probe to the other end, and the air inlet and each air blowing opening are provided with one-way valves. Further, two limit rods are fixedly connected to one side, close to the probes, of each piston plate, the limit rods are horizontally distributed, and the two limit rods are distributed in a circumferential array with respect to the corresponding probe. Further, connecting blocks are fixedly connected to the tops of the protection grooves on the side faces of the detection box, connecting shafts penetrate through each connecting block in a rotating mode, and the connecting shafts are horizontally distributed; Two connecting plates are fixedly connected to the outer surface of the top of each cover plate at intervals, the two connecting plates are fixedly sleeved at two ends of a corresponding connecting shaft respectively, and the connecting plates are in sliding fit with the connecting blocks. F