A power safety valve for preventing overload of electrical equipment

Abstract

This utility model belongs to the field of electrical safety technology, specifically relating to a power safety valve for preventing overload of electrical equipment. It includes an ammeter housing, a horseshoe magnet mounted at the bottom of the housing, pole shoes fixedly connected to the side wall of the horseshoe magnet, an electromagnetic induction device connected to a bearing in the lower middle part of the housing, a dial at the upper end of the housing, a battery mounted on the inner wall of the housing, a push-button switch mounted at the end of the battery, a conduit on the side wall of the housing, one end of the conduit connected to a circuit protection box, a switch box mounted at the bottom of the circuit protection box, a square hole in the center of the switch box, and a switching device inside the switch box. This utility model is reusable and automatically recloses, allowing for rapid power restoration via manual reset and automatic reclosing, eliminating the need for component replacement and saving maintenance costs and time.

Description

Technical Field

[0001] This utility model belongs to the field of electrical safety technology, specifically relating to a power safety valve for preventing overload of power equipment. Background Technology

[0002] The core function and purpose of a power safety valve that prevents overload of electrical equipment is to automatically cut off the circuit when the current carried by the electrical equipment (such as lines, transformers, motors, etc.) exceeds its safety limit, thereby protecting the equipment from damage and preventing electrical fires or system collapse.

[0003] In the prior art, for example, the invention disclosed in patent number CN2364549Y includes: an electrothermal energy conversion element; it also includes: an elastic element, a frame and an overcurrent protection device; the first end of the elastic element is connected in series with the electrothermal energy conversion element by a hot melt material, and the second end is fixed to the frame; when there is a high voltage on the electrothermal energy conversion element, the heat generated therefrom melts the hot melt material, causing the elastic element to separate from the electrothermal energy conversion element.

[0004] Existing technology provides one-time protection for power lines and cannot automatically restore power. After a fuse blows, it must be manually replaced to restore power, which makes maintenance troublesome, requires on-site operation, and increases maintenance costs and time. Utility Model Content

[0005] The purpose of this invention is to provide a power safety valve for preventing overload of power equipment. It is reusable and can brake and restore power. It can quickly restore power supply through manual reset and automatic reclosing without replacing parts, thus saving maintenance costs and time.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A power safety valve for preventing overload of electrical equipment includes an ammeter housing, a horseshoe magnet mounted at the bottom of the ammeter housing, a pole shoe fixedly connected to the side wall of the horseshoe magnet, an electromagnetic induction device connected to a bearing at the lower middle part of the ammeter housing, a dial at the upper end of the ammeter housing, a storage battery mounted on the inner wall of the ammeter housing, a push-button switch mounted at the end of the storage battery, and a through pipe on the side wall of the ammeter housing, one end of which is connected to a circuit protection box.

[0008] Preferably, the electromagnetic induction device includes an iron core, an aluminum frame is fixedly installed around the center of the iron core, an energized coil is provided on the side wall of the aluminum frame, and a rotating shaft is connected to both ends of the aluminum frame. A pointer is installed at the end of one of the rotating shafts. The pointer rotates with the rotating shaft. The two rotating shafts are installed on the inner wall of the ammeter housing through bearings. The pointer is compatible with the push-button switch.

[0009] Preferably, the bottom of the ammeter housing is provided with a connecting plate, and a helical spring is wound on each of the rotating shafts. The inner end of the helical spring is connected to the rotating shaft, and the outer end of the helical spring is connected to the connecting plate.

[0010] Preferably, a switch box is installed at the bottom of the circuit protection box, a square hole is opened in the middle of the switch box, and a switch device is provided inside the switch box.

[0011] Preferably, a fixing plate is fixedly installed on the bottom of the circuit protection box and the upper surface of the switch box, and an electromagnetic coil is installed between the fixing plates.

[0012] Preferably, a bracket is fixedly installed at the bottom of the circuit protection box, and a square hole is opened in the middle of the upper end of the bracket. A first spring is provided inside the square hole, and the first spring is connected to a cylindrical tube.

[0013] Preferably, the switching device includes a switch cover, a hollow column is fixedly installed on the inner top wall of the switch cover, a second spring is provided inside the hollow column, and a rotating block is connected to one end of the second spring;

[0014] The circuit protection box has two electrode plates at the bottom and a copper plate is hinged to the bottom of the circuit protection box. The lower end of the rotating block is adapted to the copper plate. The electromagnetic coil is connected in series with the battery and the push button switch. The ammeter housing has two terminals on the outside. The two terminals are connected to the two terminals of the energized coil. One electrode plate is connected in series with one terminal, and the other electrode plate is connected in series with the other terminal in the load circuit.

[0015] The technical effects achieved by this utility model are as follows:

[0016] In this invention, when the detected current exceeds the safety threshold, the button switch is installed at a position that corresponds exactly to the current safety threshold position on the dial. When the detected current exceeds the safety threshold, the drive pointer deflects to the button switch position and triggers its action, thereby activating the battery. The electromagnetic coil generates a magnetic field when current flows through it, attracting the cylindrical tube to move. When the end of the cylindrical tube touches the switch cover, the switch cover rotates, simultaneously driving the hollow core column to rotate, which in turn drives the rotating block to rotate. Simultaneously, the rotating block rotates the copper sheet by a certain angle, causing one end of the copper sheet to separate from one of the electrode plates, thus putting the load circuit into a circuit breaker protection state. It is reusable and can be automatically reclosed after manual reset to quickly restore power supply without replacing components, saving maintenance costs and time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the device in this utility model;

[0018] Figure 2This is a schematic diagram of the internal structure of the ammeter in this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the circuit protection box of this utility model;

[0020] Figure 4 This is a utility model Figure 3 A sectional view;

[0021] Figure 5 This is a right view of the device of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Ammeter housing; 2. Horseshoe magnet; 3. Pole shoe; 4. Electromagnetic induction device; 5. Dial; 6. Battery; 7. Circuit protection box; 8. Switch box; 9. Switching device; 10. Fixing plate; 11. Electromagnetic coil; 12. Bracket; 13. First spring; 14. Cylindrical tube; 15. Terminal; 401. Iron core; 402. Aluminum frame; 403. Energizing coil; 404. Rotating shaft; 405. Pointer; 406. Connecting plate; 407. Helical spring; 601. Push-button switch; 901. Switch cover; 902. Second spring; 903. Hollow core column; 904. Rotating block; 905. Copper sheet; 906. Electrode sheet. Detailed Implementation

[0024] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0025] An electrical safety valve for preventing overload of electrical equipment includes an ammeter housing 1, a horseshoe magnet 2 installed at the bottom of the ammeter housing 1, a pole shoe 3 fixedly connected to the side wall of the horseshoe magnet 2, an electromagnetic induction device 4 connected to the bearing at the lower middle part of the ammeter housing 1, a dial 5 provided at the upper end of the ammeter housing 1, a storage battery 6 installed on the inner wall of the ammeter housing 1, a push-button switch 601 installed at the end of the storage battery 6, and a through pipe provided on the side wall of the ammeter housing 1, one end of which is connected to a circuit protection box 7.

[0026] Preferably, the electromagnetic induction device 4 includes an iron core 401, an aluminum frame 402 is fixedly installed around the middle of the iron core 401, an energized coil 403 is provided on the side wall of the aluminum frame 402, and a rotating shaft 404 is connected to both ends of the aluminum frame 402. A pointer 405 is installed at the end of one of the rotating shafts 404. The pointer 405 rotates with the rotating shaft 404. The two rotating shafts 404 are installed on the inner wall of the ammeter housing 1 through bearings. The pointer 405 is compatible with the push button switch 601.

[0027] Preferably, the bottom of the ammeter housing 1 is provided with a connecting plate 406, and a helical spring 407 is wound on each rotating shaft 404. The inner end of the helical spring 407 is connected to the rotating shaft 404, and the outer end of the helical spring 407 is connected to the connecting plate 406.

[0028] like Figures 1-5 As shown: The core function and purpose of a power safety valve that prevents overload of electrical equipment is to automatically cut off the circuit when the current received by the electrical equipment exceeds its safety limit, thereby protecting the equipment from damage, preventing electrical fires or system collapse. In practical applications, when current flows through the energizing coil 403, the energizing coil 403 is subjected to an Ampere force, causing the aluminum frame 402 to rotate, which in turn drives the rotating shaft 404 to rotate, further driving the pointer 405 to rotate. While the rotating shaft 404 is rotating, the helical spring 407 will deform, hindering the rotation of the rotating shaft 404. The greater the angle of rotation of the rotating shaft 404, the greater the deformation of the helical spring 407, and the greater the resistance generated. When the Ampere force received by the aluminum frame 402 is balanced with the generated resistance, the rotating shaft 404 stops rotating, and the pointer 405 also stops rotating. The pointer 405 stops at a certain position on the dial 5, marking the current magnitude on the dial 5, thereby displaying the current magnitude of the measured circuit.

[0029] like Figures 1-5 As shown: During operation, in order to prevent current overload from damaging the circuit, a storage battery 6 is configured as an emergency protection unit. When the current exceeds the safety threshold, the drive pointer 405 deflects to the button switch 601 and triggers its action, thereby activating the storage battery 6. The wiring terminal on the side wall of the storage battery 6 is connected in series with the electromagnetic coil 11 through two wires to form a closed loop, providing emergency working current for the electromagnetic coil 11.

[0030] Preferably, a switch box 8 is installed at the bottom of the circuit protection box 7, a square hole is opened in the middle of the switch box 8, and a switch device 9 is provided inside the switch box 8.

[0031] like Figures 1-5 As shown: In practical applications, in order to prevent current overload from damaging the circuit, the system is equipped with a circuit protection box 7. When an overload current is detected, the switch device 9 inside the box is triggered to forcibly disconnect the main circuit, so that the load circuit enters the circuit break protection state.

[0032] Preferably, a fixing plate 10 is fixedly installed on the bottom of the circuit protection box 7 and the upper surface of the switch box 8, and an electromagnetic coil 11 is installed between the fixing plates 10.

[0033] like Figures 1-5As shown: During operation, when the current exceeds the safety threshold, the drive pointer 405 deflects to the button switch 601 and triggers its action, thereby activating the battery 6 and the electromagnetic coil 11. When current is passed through the electromagnetic coil 11, the electromagnetic coil 11 generates a magnetic field, thereby attracting the cylindrical tube 14 to move.

[0034] Preferably, a bracket 12 is fixedly installed at the bottom of the circuit protection box 7. A square hole is opened in the middle of the upper end of the bracket 12. A first spring 13 is provided inside the square hole, and the first spring 13 is connected to a cylindrical tube 14.

[0035] like Figures 1-5 As shown: In daily operation, the first spring 13 applies a pre-tightening force to the cylindrical tube 14 to keep it in an axially locked state, so as to avoid the accidental triggering of the switch cover 901 due to radial displacement caused by vibration or inertia.

[0036] Preferably, the switch device 9 includes a switch cover 901, a hollow column 903 is fixedly installed on the inner top wall of the switch cover 901, a second spring 902 is provided inside the hollow column 903, and a rotating block 904 is connected to one end of the second spring 902.

[0037] The bottom of the circuit protection box 7 is provided with two electrode plates 906, and a copper plate 905 is hinged to the bottom of the circuit protection box 7. The lower end of the rotating block 904 is adapted to the copper plate 905. The electromagnetic coil 11 is connected in series with the storage battery 6 and the push button switch 601. The outside of the ammeter housing 1 is provided with two terminals 15. The two terminals 15 are connected to the two terminals of the energized coil 403. One electrode plate 906 is connected in series with one terminal 15, and the other electrode plate 906 is connected in series with the other terminal 15 in the load circuit.

[0038] like Figures 1-5 As shown: In practical applications, when the current exceeds the safety threshold, the drive pointer 405 deflects to the button switch 601 and triggers its action, thereby activating the battery 6 and the electromagnetic coil 11. When current is passed through the electromagnetic coil 11, the electromagnetic coil 11 generates a magnetic field, and the cylindrical tube 14 is magnetized to form opposite magnetic poles, thereby attracting the cylindrical tube 14 to move. When the end of the cylindrical tube 14 touches the switch cover 901, the switch cover 901 rotates, which at the same time drives the hollow column 903 to rotate, thereby driving the rotating block 904 to rotate. While the rotating block 904 rotates, the copper sheet 905 is rotated at a certain angle, so that one end of the copper sheet 905 is separated from one of the electrode plates 906, and the load circuit enters the circuit break protection state.

[0039] The working principle of this utility model is as follows: The core function and purpose of the power safety valve for preventing overload of power equipment is to automatically cut off the circuit when the current received by the power equipment exceeds its safety limit, thereby protecting the equipment from damage, preventing electrical fires or system collapse. In practical applications, when current is passed through the energizing coil 403, the energizing coil 403 is subjected to Ampere force, causing the aluminum frame 402 to rotate, which in turn drives the rotating shaft 404 to rotate, further driving the pointer 405 to rotate. While the rotating shaft 404 is rotating, the helical spring 407 will deform, hindering the rotation of the rotating shaft 404. The greater the angle of rotation of the rotating shaft 404, the greater the deformation of the helical spring 407, and the greater the resistance generated. When the Ampere force received by the aluminum frame 402 is balanced with the resistance generated, the rotating shaft 404 stops rotating, and the pointer 405 also stops rotating, stopping at a certain position on the dial 5.

[0040] In practical applications, when the detected current exceeds the safety threshold, the button switch 601 is installed at the position corresponding to the current safety threshold on the dial 5. When the detected current exceeds the safety threshold, the drive pointer 405 deflects to the button switch 601 and triggers its action, thereby activating the battery 6 and the electromagnetic coil 11. When current is passed through the electromagnetic coil 11, the electromagnetic coil 11 generates a magnetic field, which attracts the cylindrical tube 14 to move. When the end of the cylindrical tube 14 touches the switch cover 901, the switch cover 901 rotates, which in turn drives the hollow column 903 to rotate, thereby driving the rotating block 904 to rotate. While the rotating block 904 rotates, the copper sheet 905 is rotated at a certain angle, causing one end of the copper sheet 905 to separate from one of the electrode plates 906, so that the load circuit enters the circuit break protection state.

[0041] In this embodiment, the load circuit can also be disconnected by manually pressing the button switch 601. Whether the load circuit is automatically disconnected due to excessive current exceeding the safety threshold or by manually pressing the button switch 601 to disconnect the load circuit, restarting the load circuit requires manual inspection. This involves opening the upper door of the circuit protection box 7 and manually pushing the touch switch cover 901 to the end near the cylindrical tube 14, thereby restoring the copper sheet 905 to the two electrode plates 906 and allowing the load circuit to operate normally again.

[0042] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A power safety valve for preventing overload of electrical equipment, characterized in that: The device includes an ammeter housing (1), a horseshoe magnet (2) installed at the bottom of the ammeter housing (1), a pole shoe (3) fixedly connected to the side wall of the horseshoe magnet (2), an electromagnetic induction device (4) connected to the bearing at the middle of the lower end of the ammeter housing (1), a dial (5) provided at the upper end of the ammeter housing (1), a storage battery (6) installed on the inner wall of the ammeter housing (1), a push-button switch (601) installed at the end of the storage battery (6), and a through pipe provided on the side wall of the ammeter housing (1), one end of which is connected to a circuit protection box (7).

2. A power safety valve for preventing overload of power equipment according to claim 1, characterized in that: The electromagnetic induction device (4) includes an iron core (401), an aluminum frame (402) is fixedly installed around the middle of the iron core (401), an energized coil (403) is provided on the side wall of the aluminum frame (402), and a rotating shaft (404) is connected to both ends of the aluminum frame (402). A pointer (405) is installed at the end of one of the rotating shafts (404). The pointer (405) rotates with the rotating shaft (404). The two rotating shafts (404) are installed on the inner wall of the ammeter housing (1) through bearings. The pointer (405) is compatible with the push button switch (601).

3. A power safety valve for preventing overload of power equipment according to claim 2, characterized in that: The bottom of the ammeter housing (1) is provided with a connecting plate (406), and a helical spring (407) is wound on each of the rotating shafts (404). The inner end of the helical spring (407) is connected to the rotating shaft (404), and the outer end of the helical spring (407) is connected to the connecting plate (406).

4. A power safety valve for preventing overload of power equipment according to claim 3, characterized in that: The circuit protection box (7) is equipped with a switch box (8) at the bottom. The switch box (8) has a square hole in the middle and a switch device (9) is provided inside the switch box (8).

5. A power safety valve for preventing overload of power equipment according to claim 4, characterized in that: A fixing plate (10) is fixedly installed on the bottom of the circuit protection box (7) and the upper surface of the switch box (8), and an electromagnetic coil (11) is installed between the fixing plates (10).

6. A power safety valve for preventing overload of power equipment according to claim 5, characterized in that: The circuit protection box (7) is fixedly installed with a bracket (12) at the bottom. A square hole is opened in the middle of the upper end of the bracket (12). A first spring (13) is provided inside the square hole. The first spring (13) is connected to a cylindrical tube (14).

7. A power safety valve for preventing overload of power equipment according to claim 6, characterized in that: The switching device (9) includes a switch cover (901), a hollow column (903) is fixedly installed on the inner top wall of the switch cover (901), a second spring (902) is provided inside the hollow column (903), and a rotating block (904) is connected to one end of the second spring (902). The circuit protection box (7) has two electrode plates (906) at the bottom and a copper plate (905) is hinged to the bottom of the circuit protection box (7). The lower end of the rotating block (904) is adapted to the copper plate (905). The electromagnetic coil (11) is connected in series with the storage battery (6) and the push button switch (601). The ammeter housing (1) has two terminals (15) on the outside. The two terminals (15) are connected to the two terminals of the energized coil (403). One electrode plate (906) is connected in series with one terminal (15), and the other electrode plate (906) is connected in series with the other terminal (15) on the load circuit.

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