A warning device for photovoltaic electrical interval zero sequence protection

Abstract

The utility model discloses a photovoltaic electrical interval zero sequence protection warning device belongs to electrical equipment technical field, this photovoltaic electrical interval zero sequence protection warning device, include: base wiring box, the top fixed mounting of base wiring box has the bellows, and the one end fixed connection of bellows has the cover, and the top fixed mounting of base wiring box has the audible -visual alarm, and the top fixed connection of base wiring box has the trigger control box, and the both sides inner wall of trigger control box are rotatably connected with transmission screw rod, this photovoltaic electrical interval zero sequence protection warning device, current relay red light is bright after, audible -visual alarm is switched to the maximum gear automatically, and audible -visual alarm will also be started simultaneously, ensure that the alarm sound is loud enough, and the light is enough dazzling, even in noisy, long distance or the environment with visual impairment also can be perceived quickly, make the operation and maintenance personnel discover the fault quickly, realize the intelligence management of the usual not to disturb, the urgent time strong police.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a warning device for zero-sequence protection of photovoltaic electrical intervals. Background Technology

[0002] In photovoltaic power generation systems, zero-sequence protection of electrical compartments is a key link to ensure system safety and prevent the spread of electrical faults. As the core component of zero-sequence protection, the current relay will issue an alarm signal by lighting up a red indicator light when it detects an abnormal zero-sequence current. Currently, maintenance personnel usually need to rely on regular inspections to observe the status of these indicator lights.

[0003] This traditional alarm method has obvious drawbacks. When equipment malfunctions, the red light of the current relay may not be enough to attract the attention of maintenance personnel in time due to reasons such as the distance of the equipment or the presence of visual obstacles on site, resulting in a delay in fault handling. Because there is no obvious audible and visual alarm, it is not easy for on-site personnel to identify the fault phenomenon in time after the equipment trips, which may even lead to more serious equipment damage or safety accidents. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a warning device for zero-sequence protection of photovoltaic electrical intervals. Under normal conditions, the audible and visual alarm is at its lowest setting, avoiding noise and light pollution caused by misoperation or slight interference. When the red light of the current relay illuminates, the audible and visual alarm is automatically switched to its highest setting and activated, ensuring that the alarm sound is loud enough and the light is bright enough. Even in noisy, distant, or visually obstructed environments, it can be quickly detected, allowing maintenance personnel to quickly discover faults while achieving intelligent management that is undisturbed under normal circumstances and provides strong alarms in emergencies.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A warning device for zero-sequence protection of a photovoltaic electrical compartment, comprising:

[0009] A base wiring box, the top of which is fixedly mounted with a corrugated pipe, one end of which is fixedly connected to a cover; an audible and visual alarm is fixedly mounted on the top of the base wiring box; a trigger control box is fixedly connected to the top of the base wiring box; a transmission threaded rod is rotatably connected between the inner walls of the two sides of the trigger control box; a transmission plate is threadedly connected to the transmission threaded rod; and a trigger rod is fixedly connected to one outer surface of the transmission plate; and

[0010] An L-shaped connecting plate is fixedly connected to one outer surface of the trigger control box. An adjustment control box is fixedly connected to the other outer surface of the L-shaped connecting plate. A transmission worm gear is rotatably connected between the front and rear inner walls of the adjustment control box. A transmission worm wheel is rotatably connected between the two inner walls of the adjustment control box, and the transmission worm wheel meshes with the transmission worm gear. A connecting frame is rotatably connected to one outer surface of the adjustment control box, and the connecting frame is fixedly connected to the transmission worm wheel through a rotating shaft. A bidirectional threaded rod is rotatably connected between the two inner walls of the connecting frame, and two clamping plates are threaded onto the bidirectional threaded rod.

[0011] As a preferred embodiment of this utility model, a drive motor is fixedly installed on one outer surface of the trigger control box, and the output end of the drive motor is fixedly connected to the transmission threaded rod.

[0012] As a preferred embodiment of this utility model, a limit rod is fixedly connected between the inner walls of the two sides of the trigger control box, and the transmission plate is slidably sleeved on the limit rod.

[0013] As a preferred embodiment of this utility model, a servo motor is fixedly installed on one outer surface of the adjustment control box, and the output end of the servo motor is fixedly connected to the transmission worm gear.

[0014] As a preferred embodiment of this utility model, a lever is rotatably connected to one outer surface of the connecting frame, the lever is fixedly connected to a bidirectional threaded rod, and two crossbars are fixedly connected between the inner walls of the two sides of the connecting frame, with each clamping plate slidably sleeved on the two crossbars.

[0015] As a preferred embodiment of this utility model, reinforcing pads are fixedly connected to one outer surface of each of the two clamping plates.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, this utility model provides a warning device for zero-sequence protection of photovoltaic electrical intervals, which has the following beneficial effects:

[0018] This photovoltaic electrical interval zero-sequence protection warning device has a cover that covers the current relay. In the normal state, when the red light on the current relay is not lit, the adjustment button of the audible and visual alarm is in its minimum position. When the photoelectric sensor inside the cover detects that the red light on the current relay has illuminated, the servo motor is started, driving the transmission worm gear to rotate, which in turn rotates the transmission worm wheel and the connecting frame. The connecting frame, through two clamps, turns the adjustment button of the audible and visual alarm to its maximum position. At this time, the drive motor is started, driving the transmission threaded rod to rotate, which moves the transmission plate, causing the trigger rod to press the alarm switch of the audible and visual alarm. Under normal conditions, the audible and visual alarm is in its minimum position, avoiding noise and light pollution caused by misoperation or slight interference. When the red light on the current relay illuminates, the audible and visual alarm is automatically switched to its maximum position and activated, ensuring that the alarm sound is loud enough and the light is bright enough. Even in noisy, distant, or visually obstructed environments, it can be quickly detected, allowing maintenance personnel to quickly identify faults while achieving intelligent management that is undisturbed under normal circumstances and provides strong alarms in emergencies. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is a partial structural cross-sectional view of the trigger control box of this utility model;

[0021] Figure 3 This is a partial structural cross-sectional view of the adjustment and control box of this utility model;

[0022] Figure 4 This is a three-dimensional view of the connecting frame portion of this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Base wiring box; 2. Audible and visual alarm; 3. Corrugated pipe; 4. Cover; 5. Trigger control box; 6. L-shaped connecting plate; 7. Adjustment control box; 8. Transmission threaded rod; 9. Transmission plate; 10. Trigger rod; 11. Drive motor; 12. Limit rod; 13. Transmission worm gear; 14. Transmission worm wheel; 15. Servo motor; 16. Connecting frame; 17. Bidirectional threaded rod; 18. Clamping plate; 19. Reinforcing pad; 20. Crossbar; 21. Toggle block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] Example:

[0027] Please see Figures 1-4 A warning device for zero-sequence protection of photovoltaic electrical compartments, comprising:

[0028] A base wiring box 1 has a corrugated pipe 3 fixedly installed on its top. One end of the corrugated pipe 3 is fixedly connected to a cover 4. An audible and visual alarm 2 is fixedly installed on the top of the base wiring box 1. A trigger control box 5 is fixedly connected to the top of the base wiring box 1. A transmission threaded rod 8 is rotatably connected between the inner walls of both sides of the trigger control box 5. A transmission plate 9 is threaded onto the transmission threaded rod 8. A trigger rod 10 is fixedly connected to the outer surface of one side of the transmission plate 9.

[0029] L-shaped connecting plate 6 is fixedly connected to one outer surface of trigger control box 5. Adjustment control box 7 is fixedly connected to the other outer surface of L-shaped connecting plate 6. Transmission worm gear 13 is rotatably connected between the front and rear inner walls of adjustment control box 7. Transmission worm wheel 14 is rotatably connected between the two inner walls of adjustment control box 7, and the transmission worm wheel 14 is meshed with transmission worm gear 13. Connecting frame 16 is rotatably connected to one outer surface of adjustment control box 7, and connecting frame 16 is fixedly connected to transmission worm wheel 14 through rotating shaft. Bidirectional threaded rod 17 is rotatably connected between the two inner walls of connecting frame 16, and two clamping plates 18 are threadedly connected to bidirectional threaded rod 17.

[0030] In a specific embodiment of this utility model, the cover 4 is used to cover the current relay. A photoelectric sensor is installed inside the cover 4 to detect whether the alarm red light of the current relay is flashing. By controlling the rotation of the bidirectional threaded rod 17, the two clamping plates 18 move closer together, thereby clamping the sound and light alarm 2's adjustment button. In the normal state where the current relay's red light is not lit, the adjustment button of the sound and light alarm 2 is in the lowest position. When the photoelectric sensor inside the cover 4 detects that the current relay's red light is lit, the transmission worm gear 13 is controlled to rotate, driving the transmission worm wheel 14 to rotate, which in turn drives the connecting frame 16 to rotate. The connecting frame 16, through the two clamping plates 18, clamps... When the adjustment button of the audible and visual alarm 2 is turned to the maximum position, the transmission threaded rod 8 will be controlled to rotate, driving the transmission plate 9 to move, so that the trigger rod 10 presses the alarm switch of the audible and visual alarm 2. Under normal conditions, the audible and visual alarm 2 is in the minimum position, avoiding noise and light pollution caused by misoperation or slight interference. When the red light of the current relay is lit, the audible and visual alarm 2 is automatically switched to the maximum position, and the audible and visual alarm 2 will also be activated to ensure that the alarm sound is loud enough and the light is bright enough, so that it can be quickly detected even in noisy, distant or visually obstructed environments. This allows maintenance personnel to quickly discover faults, while realizing intelligent management that is not disturbed in normal times and has a strong alarm in emergencies.

[0031] Specifically, a drive motor 11 is fixedly installed on one outer surface of the trigger control box 5, and the output end of the drive motor 11 is fixedly connected to the transmission threaded rod 8.

[0032] In this embodiment, the drive motor 11 is started by controlling it to drive the transmission threaded rod 8 to rotate.

[0033] Specifically, a limit rod 12 is fixedly connected between the inner walls of both sides of the trigger control box 5, and the transmission plate 9 is slidably sleeved on the limit rod 12.

[0034] In this embodiment, the limiting rod 12 keeps the transmission plate 9 stable during movement.

[0035] Specifically, a servo motor 15 is fixedly installed on one outer surface of the control box 7, and the output end of the servo motor 15 is fixedly connected to the transmission worm gear 13.

[0036] In this embodiment, the servo motor 15 is started to drive the transmission worm gear 13 to rotate.

[0037] Specifically, a lever 21 is rotatably connected to one outer surface of the connecting frame 16. The lever 21 is fixedly connected to the bidirectional threaded rod 17. Two crossbars 20 are fixedly connected between the inner walls of the two sides of the connecting frame 16. Each clamping plate 18 is slidably sleeved on the two crossbars 20.

[0038] In this embodiment, the lever 21 facilitates the operator to rotate the bidirectional threaded rod 17, and the two crossbars 20 keep the two clamping plates 18 stable during movement.

[0039] Specifically, reinforcing pads 19 are fixedly connected to one outer surface of each of the two clamping plates 18.

[0040] In this embodiment, two reinforcing pads 19 are used to make firm contact with the adjustment button of the audible and visual alarm 2, increasing the friction force so that the two clamps 18 can stably turn the adjustment button of the audible and visual alarm 2.

[0041] Working principle: The cover 4 is used to cover the current relay. By controlling the rotation of the toggle 21, the bidirectional threaded rod 17 is rotated, causing the two clamping plates 18 to move closer together. This clamps the sound and light alarm 2's adjustment button. In the normal state where the red light of the current relay is not lit, the adjustment button of the sound and light alarm 2 is at the minimum position. When the photoelectric sensor inside the cover 4 detects that the red light of the current relay is lit, the servo motor 15 is started, driving the transmission worm gear 13 to rotate, which in turn drives the transmission worm wheel 14 to rotate, causing the connecting frame 16 to rotate. The connecting frame 16, through the two clamping plates 18, turns the adjustment button of the sound and light alarm 2 to the maximum position. When the drive motor 11 is activated, it will start and rotate the transmission threaded rod 8, which in turn moves the transmission plate 9. This causes the trigger rod 10 to press the alarm switch of the audible and visual alarm 2. Under normal conditions, the audible and visual alarm 2 is in the lowest setting, avoiding noise and light pollution caused by misoperation or slight interference. When the red light of the current relay illuminates, the audible and visual alarm 2 is automatically switched to the highest setting and activated, ensuring that the alarm sound is loud enough and the light is bright enough. Even in noisy, distant, or visually obstructed environments, it can be quickly detected, allowing maintenance personnel to quickly discover faults while achieving intelligent management that is undisturbed under normal circumstances and provides strong alarms in emergencies.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A warning device for zero-sequence protection of a photovoltaic electrical compartment, characterized in that, include: A base wiring box (1), a corrugated pipe (3) is fixedly installed on the top of the base wiring box (1), a cover (4) is fixedly connected to one end of the corrugated pipe (3), an audible and visual alarm (2) is fixedly installed on the top of the base wiring box (1), a trigger control box (5) is fixedly connected to the top of the base wiring box (1), a transmission threaded rod (8) is rotatably connected between the inner walls of the two sides of the trigger control box (5), a transmission plate (9) is threadedly connected to the transmission threaded rod (8), and a trigger rod (10) is fixedly connected to one outer surface of the transmission plate (9); and An L-shaped connecting plate (6) is fixedly connected to one side of the outer surface of the trigger control box (5). An adjustment control box (7) is fixedly connected to the other side of the outer surface of the L-shaped connecting plate (6). A transmission worm (13) is rotatably connected between the front and rear inner walls of the adjustment control box (7). A transmission worm wheel (14) is rotatably connected between the two inner walls of the adjustment control box (7), and the transmission worm wheel (14) meshes with the transmission worm (13). A connecting frame (16) is rotatably connected to one side of the outer surface of the adjustment control box (7), and the connecting frame (16) is fixedly connected to the transmission worm wheel (14) through a rotating shaft. A bidirectional threaded rod (17) is rotatably connected between the two inner walls of the connecting frame (16), and two clamping plates (18) are threadedly connected to the bidirectional threaded rod (17).

2. The warning device for zero-sequence protection of a photovoltaic electrical compartment according to claim 1, characterized in that: A drive motor (11) is fixedly installed on one side of the outer surface of the trigger control box (5), and the output end of the drive motor (11) is fixedly connected to the transmission threaded rod (8).

3. The warning device for zero-sequence protection of a photovoltaic electrical compartment according to claim 1, characterized in that: A limit rod (12) is fixedly connected between the inner walls of the two sides of the trigger control box (5), and the transmission plate (9) is slidably sleeved on the limit rod (12).

4. The warning device for zero-sequence protection of a photovoltaic electrical compartment according to claim 1, characterized in that: A servo motor (15) is fixedly installed on one side of the outer surface of the adjustment control box (7), and the output end of the servo motor (15) is fixedly connected to the transmission worm gear (13).

5. A warning device for zero-sequence protection of a photovoltaic electrical compartment according to claim 1, characterized in that: A lever (21) is rotatably connected to one side of the outer surface of the connecting frame (16). The lever (21) is fixedly connected to the bidirectional threaded rod (17). Two crossbars (20) are fixedly connected between the inner walls of the two sides of the connecting frame (16). Each clamping plate (18) is slidably sleeved on the two crossbars (20).

6. The warning device for zero-sequence protection of a photovoltaic electrical compartment according to claim 1, characterized in that: Reinforcing pads (19) are fixedly connected to one outer surface of each of the two clamps (18).

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