Frequency converter with electric leakage reminding device

Abstract

The invention discloses a frequency converter with an electric leakage reminding device, and belongs to the technical field of frequency converters, the frequency converter comprises a frequency converter body, four corners of the frequency converter body are provided with mounting assemblies, and one side of the frequency converter body is provided with a mounting groove; according to the frequency converter, the leakage protector is installed on the frequency converter body, when electric leakage occurs in the frequency converter body, the leakage protector can cut off an internal circuit of the frequency converter body in time so as to achieve the purpose of power-off protection, and during power failure, the electromagnet loses the magnetic attraction effect on the metal connecting block, so that the service life of the frequency converter is prolonged. At the moment, a metal connecting block can move downwards under the counter-acting force generated by compression of a compression spring to enable the bottom of the metal connecting block to be attached to the top of a metal connecting plate, so that a circuit of a starting assembly is closed, an audible and visual alarm can give an alarm to the outside after being powered on, and a maintainer is prompted to overhaul and maintain the electric leakage frequency converter body in time; and normal production and operation activities are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of frequency converters, and in particular relates to a frequency converter with a leakage reminding device. Background Art

[0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. The frequency converter is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, drive unit, detection unit, and microprocessor unit. The frequency converter adjusts the voltage and frequency of the output power supply by the internal IGBT's opening and closing, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency converter has many protection functions, such as over-current, over-voltage, overload protection, etc. With the continuous improvement of industrial automation, frequency converters have also been widely used.

[0003] A Chinese patent with a publication (announcement) number of CN209215969U discloses a frequency converter with a leakage reminder device, including a shell, an inner side wall of the shell is fixedly provided with a leakage protector, and the leakage protector is connected to a circuit, a mutual inductor is arranged inside the leakage protector, the outside of the leakage protector is movably connected to a main switch through a tripper, and a circuit board is fixedly arranged inside the shell; when leakage occurs between the protection appliance and the circuit or someone is electrocuted, the tripper is actuated to push the main switch to trip to achieve the purpose of leakage protection, a temperature sensor and a humidity sensor are arranged, the temperature sensor and the humidity sensor monitor the temperature and humidity inside the shell in real time, and the working environment of the electrical appliance inside the shell can be maintained through an electric heating wire and a heat dissipation fan to prevent the electrical appliance from being damaged by the environment. The utility model has the advantages of good leakage protection and reminder functions, perfect functions and easy use, and greatly improves the safety of the existing frequency converter.

[0004] The inverter with a leakage reminder device involved in the above patent has a leakage protector installed on the inverter. When the inverter has a leakage problem, the leakage protector can cut off the power of the inverter to prevent the leakage problem from burning and damaging the inverter. However, after the leakage protector cuts off the power of the inverter, it cannot send an alarm to the outside in time, and the maintenance personnel cannot discover the inverter failure in time, which will affect the normal production and operation activities. For this reason, we propose an inverter with a leakage reminder device to solve the problems existing in the prior art, so that its work efficiency is improved, time and effort are saved, and the production labor cost of the enterprise is reduced. Summary of the invention

[0005] The object of the present invention is to provide a frequency converter with a leakage warning device to solve the problem proposed in the above background technology that in the prior art a leakage protector is installed on the frequency converter. When a leakage problem occurs in the frequency converter, the leakage protector can cut off the power of the frequency converter to prevent the leakage problem from burning and damaging the frequency converter. However, after the leakage protector cuts off the power of the frequency converter, it cannot send an alarm to the outside in time, and the maintenance personnel cannot discover the frequency converter failure in time, which will affect the normal production and operation activities.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A frequency converter with a leakage reminder device comprises a frequency converter body, four corners of the frequency converter body are provided with mounting components, one side of the frequency converter body is provided with a mounting groove, one side of the mounting groove is provided with a sealing plate, the sealing plate is locked and fixed to the corresponding position of the mounting groove by a locking assembly, the inner cavity of the mounting groove is fixedly installed with a mounting frame, the surface of the mounting frame is fixedly installed with a leakage protector, the leakage protector is electrically connected to the circuit of the frequency converter body, the surface of the mounting frame and located on one side of the leakage protector is installed with an audible and visual alarm, and the surface of the mounting frame is installed with a starting component for starting the audible and visual alarm after the frequency converter body is powered off for protection.

[0008] Preferably, the mounting frame includes a support plate 1 fixedly installed in the inner cavity of the mounting groove, a support plate 2 is fixedly installed in the inner cavity of the mounting groove and located below the support plate 1, a vertical plate is fixedly installed on the inner sides of the support plate 1 and the support plate 2, and a support plate 3 is fixedly installed on one side of the vertical plate.

[0009] Preferably, the starting component includes an electromagnet fixedly mounted on the bottom of support plate one, a metal connecting block is magnetically attracted below the electromagnet, an elastic component connected to the bottom of the metal connecting block is installed on the bottom of support plate two, a metal connecting plate is fixedly mounted on the top of support plate two, the metal connecting block and the metal connecting plate are electrically connected through a connecting component, a battery is fixedly mounted on the top of support plate three, and the sound and light alarm, battery, metal connecting plate, metal connecting block and connecting component are connected together by wires to form a closed circuit.

[0010] Preferably, the connecting assembly includes a metal rod fixedly mounted on the bottom of a support plate, the top of the metal rod is electrically connected to the sound and light alarm through a wire, a through hole matching the metal rod is provided on the surface of the metal connecting block, the inner wall of the through hole is slidably connected to the surface of the metal rod, and a guide assembly for improving the movement stability of the metal connecting block is provided between the support plate and the metal connecting plate.

[0011] Preferably, the guide assembly includes a guide seat fixedly installed at the four corners of the metal connecting block, a guide hole is opened on the surface of the guide seat, a guide rod corresponding to the guide hole is fixedly installed between the support plate and the metal connecting plate, and the inner wall of the guide hole is slidably connected to the surface of the guide rod.

[0012] Preferably, the elastic component includes a moving rod fixedly installed at the bottom of the metal connecting block, the bottom end of the moving rod sequentially passes through the metal connecting plate and the second support plate and extends to the bottom of the second support plate where a fixed plate is fixedly installed, and a compression spring is fixedly installed on the top of the fixed plate and located outside the moving rod, and the top end of the compression spring is fixedly connected to the bottom of the second support plate.

[0013] Preferably, movable holes are provided on the surfaces of the metal connecting plate and the second supporting plate at positions corresponding to the movable rod, and the surface of the movable rod is slidably connected to the inner wall of the movable hole.

[0014] Preferably, a pull rod is fixedly installed on the front side of the metal connecting block, one end of which passes through the sealing plate and extends to the outside of the sealing plate, a groove matching the pull rod is opened on the surface of the sealing plate, and the surface of the pull rod is slidably connected to the inner wall of the groove.

[0015] Preferably, the mounting assembly includes fixing grooves formed at four corners of the inverter body, a mounting plate is integrally formed on the back of the fixing groove, and a mounting hole is formed on the surface of the mounting plate.

[0016] Preferably, the locking assembly includes a slot opened on one side of the inverter body, the surface of the sealing plate is clamped with the inner wall of the slot, and the four corners of one side of the sealing plate are threadedly connected with a locking rod, and one end of the locking rod passes through the sealing plate and extends to the outside of the sealing plate and is threadedly connected to the inner wall of the slot.

[0017] Technical effects and advantages of the present invention: Compared with the prior art, the frequency converter with a leakage reminder device proposed by the present invention has the following advantages:

[0018] 1. The present invention installs a leakage protector on the inverter body. When leakage occurs inside the inverter body, the leakage protector can cut off the internal circuit of the inverter body in time to achieve the purpose of power-off protection. When the power is off, the electromagnet loses its magnetic attraction to the metal connecting block. At this time, the metal connecting block moves downward under the reaction force generated by the compression of the compression spring so that its bottom is attached to the top of the metal connecting plate, thereby closing the circuit of the starting component. After the sound and light alarm is powered on, it will send an alarm to the outside to prompt the maintenance personnel to perform maintenance on the inverter body with leakage in time to ensure normal production and operation activities.

[0019] 2. The present invention can install and fix the use position of the inverter body through the setting of the installation component. Through the setting of the connection component, when the metal connection block and the metal connection plate are in contact, the circuit of the entire starting component and the sound and light alarm can be closed, and the sound and light alarm can be energized. Through the setting of the guide component, the stability of the movement of the metal connection block can be improved. Through the setting of the elastic component, when the metal connection block is separated from the adsorption effect of the electromagnet, the elastic component can pull it downward so that its bottom is in contact with the top of the metal connection plate;

[0020] 3. The present invention can provide installation space for the sound and light alarm and the starting component matched therewith by setting the installation groove. By setting the sealing plate, after the internal structure of the installation groove is installed, the sealing plate can be locked and fixed in the position of the installation groove by the locking assembly to seal the installation groove, thereby protecting the internal structure of the installation groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure inside the installation slot of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the present invention when the starting component is disconnected from the sound and light alarm circuit;

[0024] Figure 4 It is a schematic diagram of the structure when the start-up component and the sound and light protector circuit of the present invention are closed;

[0025] Figure 5 It is a structural schematic diagram of the starting component of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the guide assembly of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the mounting frame of the present invention.

[0028] In the figure: 1. inverter body; 2. mounting slot; 3. sealing plate; 4. mounting frame; 5. leakage protector; 6. sound and light alarm; 7. support plate 1; 8. support plate 2; 9. vertical plate; 10. support plate 3; 11. electromagnet; 12. metal connecting block; 13. metal connecting plate; 14. battery; 15. wire; 16. metal rod; 17. through hole; 18. guide seat; 19. guide hole; 20. guide rod; 21. moving rod; 22. fixed plate; 23. compression spring; 24. moving hole; 25. pull rod; 26. groove; 27. fixed groove; 28. mounting plate; 29. ​​mounting hole; 30. slot; 31. locking rod. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 7 The present invention discloses an inverter with a leakage reminder device, including an inverter body 1, and four corners of the inverter body 1 are provided with mounting components, the mounting components include fixing grooves 27 opened at the four corners of the inverter body, and the back of the fixing groove 27 is integrally formed with a mounting plate 28, and the surface of the mounting plate 28 is provided with a mounting hole 29. Through the setting of the mounting component, the user can install and fix the device at the use position by passing the bolt through the mounting hole 29.

[0031] Preferably, a mounting groove 2 is opened on one side of the inverter body 1, and a sealing plate 3 is provided on one side of the mounting groove 2. The sealing plate 3 is locked and fixed at the corresponding position of the mounting groove 2 by a locking assembly. The locking assembly includes a card slot 30 opened on one side of the inverter body 1, and the surface of the sealing plate 3 is clamped with the inner wall of the card slot 30. The four corners of one side of the sealing plate 3 are threadedly connected with a locking rod 31, and one end of the locking rod 31 passes through the sealing plate 3 and extends to the outside of the sealing plate 3 and is threadedly connected to the inner wall of the card slot 30.

[0032] By setting the sealing plate 3, after the internal structure of the mounting groove 2 is installed, the user can install and fix the sealing plate 3 at the mounting groove 2 to protect its internal structure. Specifically, the user can insert the sealing plate 3 into the inner cavity of the slot 30, and then tighten the locking rod 31 to lock and fix the sealing plate 3 in the inner cavity of the slot 30.

[0033] Among them, the inner cavity of the mounting groove 2 is fixedly installed with a mounting frame 4, the mounting frame 4 includes a support plate 1 7 fixedly installed in the inner cavity of the mounting groove 2, a support plate 2 8 is fixedly installed in the inner cavity of the mounting groove 2 and located below the support plate 1 7, a vertical plate 9 is fixedly installed on the inner sides of the support plate 1 7 and the support plate 2 8, a support plate 3 10 is fixedly installed on one side of the vertical plate 9, and a leakage protector 5 is fixedly installed on the surface of the mounting frame 4, and the leakage protector 5 is electrically connected to the circuit of the inverter body 1.

[0034] Through the setting of the mounting frame 4, the mounting frame 4 is installed in the inner cavity of the mounting groove 2, and is used to support and fix the structure installed inside the mounting groove 2. In this embodiment, a leakage protector 5 is set in the inner cavity of the mounting groove 2. When a leakage condition occurs inside the inverter body 1, the leakage protector 5 can cut off the internal circuit of the inverter body 1 in time to achieve the purpose of power-off protection.

[0035] It is worth noting that a sound and light alarm 6 is installed on the surface of the mounting frame 4 and on one side of the leakage protector 5. A starting component for starting the sound and light alarm 6 after the inverter body 1 is powered off is installed on the surface of the mounting frame 4. The starting component includes an electromagnet 11 fixedly mounted on the bottom of the support plate 7, and a metal connecting block 12 is magnetically attracted below the electromagnet 11. An elastic component connected to the bottom of the metal connecting block 12 is installed at the bottom of the support plate 8. The elastic component includes a moving rod 21 fixedly mounted on the bottom of the metal connecting block 12. The bottom end of the moving rod 21 sequentially penetrates the metal connecting plate 13 and the support plate 8 and extends to the bottom of the support plate 8. A fixed plate 22 is fixedly installed, and a compression elastic member is fixedly installed on the top of the fixed plate 22 and located on the outside of the moving rod 21. Spring 23, the top of the compression spring 23 is fixedly connected to the bottom of the support plate 2 8, the top of the support plate 2 8 is fixedly installed with a metal connecting plate 13, the metal connecting block 12 is electrically connected to the metal connecting plate 13 through a connecting assembly, the connecting assembly includes a metal rod 16 fixedly installed at the bottom of the support plate 7, the top of the metal rod 16 is electrically connected to the sound and light alarm 6 through a wire 15, the surface of the metal connecting block 12 is provided with a through hole 17 adapted to the metal rod 16, the inner wall of the through hole 17 is slidably connected to the surface of the metal rod 16, and a battery 14 is fixedly installed on the top of the support plate 3 10, the sound and light alarm 6, the battery 14, the metal connecting plate 13, the metal connecting block 12 and the connecting assembly are connected together through a wire 15 to form a closed circuit.

[0036] When the inverter body 1 has leakage, the leakage protector 5 can cut off the internal circuit of the inverter body 1 in time to achieve the purpose of power-off protection. When the power is off, the electromagnet 11 will lose its magnetic attraction to the metal connecting block 12. At this time, the reaction force generated by the contraction of the compression spring 23 will push the metal connecting block 12 downward to move, so that the bottom of the metal connecting block 12 fits together with the top of the metal connecting plate 13, thereby closing the circuit between the drive component and the sound and light alarm 6. At this time, the sound and light alarm 6 will sound an alarm to the outside when it is powered on. In this embodiment, the bottom end of the metal rod 16 does not contact the top of the metal connecting plate 13. When the circuit is closed, the metal rod 16 and the metal connecting plate 13 are connected together through the metal connecting block 12.

[0037] Furthermore, moving holes 24 are provided on the surfaces of the metal connecting plate 13 and the supporting plate 8 at corresponding positions of the moving rod 21. The surface of the moving rod 21 is slidably connected to the inner wall of the moving hole 24. Through the setting of the moving hole 24, a moving space can be provided for the moving rod 21. When the metal connecting block 12 moves, it will drive the moving rod 21 to slide in the inner cavity of the moving hole 24.

[0038] Furthermore, a guide assembly for improving the movement stability of the metal connecting block 12 is provided between the support plate 7 and the metal connecting plate 13, and the guide assembly includes a guide seat 18 fixedly installed at the four corners of the metal connecting block 12, and a guide hole 19 is opened on the surface of the guide seat 18. A guide rod 20 corresponding to the guide hole 19 is fixedly installed between the support plate 7 and the metal connecting plate 13, and the inner wall of the guide hole 19 is slidably connected to the surface of the guide rod 20.

[0039] By setting the guide component, the stability of the movement of the metal connecting block 12 can be improved. The movement of the metal connecting block 12 will drive the guide seat 18 to move, and then drive the guide hole 19 to slide on the surface of the guide rod 20. It should be additionally explained that the guide components in this embodiment are made of insulating plastic material.

[0040] Furthermore, a pull rod 25 is fixedly installed on the front side of the metal connecting block 12, one end of the pull rod 25 passes through the sealing plate 3 and extends to the outside of the sealing plate 3, and a groove 26 adapted to the pull rod 25 is opened on the surface of the sealing plate 3, and the surface of the pull rod 25 is slidably connected to the inner wall of the groove 26.

[0041] Through the setting of the pull rod 25, after the inverter body 1 with leakage is repaired, the electromagnet 11 is in a energized state. At this time, the user can pull the pull rod 25 to move the metal connecting block 12 upward and magnetically fix it to the bottom of the electromagnet 11. Through the setting of the groove 26, a moving space can be provided for the pull rod 25. When the pull rod 25 moves, its surface will slide in the inner cavity of the groove 26.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A frequency converter with a leakage reminder device, comprising a frequency converter body (1), wherein four corners of the frequency converter body (1) are provided with mounting components, characterized in that: A mounting groove (2) is provided on one side of the inverter body (1), a sealing plate (3) is provided on one side of the mounting groove (2), the sealing plate (3) is locked and fixed to the corresponding position of the mounting groove (2) by a locking assembly, a mounting frame (4) is fixedly installed in the inner cavity of the mounting groove (2), a leakage protector (5) is fixedly installed on the surface of the mounting frame (4), the leakage protector (5) is electrically connected to the circuit of the inverter body (1), an audible and visual alarm (6) is installed on the surface of the mounting frame (4) and located on one side of the leakage protector (5), and a starting assembly for starting the audible and visual alarm (6) after the inverter body (1) is powered off is installed on the surface of the mounting frame (4).

2. The frequency converter with a leakage reminder device according to claim 1, characterized in that: The mounting frame (4) comprises a support plate 1 (7) fixedly mounted in the inner cavity of the mounting groove (2); a support plate 2 (8) is fixedly mounted in the inner cavity of the mounting groove (2) and located below the support plate 1 (7); a vertical plate (9) is fixedly mounted on the inner sides of the support plate 1 (7) and the support plate 2 (8); and a support plate 3 (10) is fixedly mounted on one side of the vertical plate (9).

3. The frequency converter with a leakage warning device according to claim 2, characterized in that: The starting assembly comprises an electromagnet (11) fixedly mounted on the bottom of the first support plate (7); a metal connecting block (12) is magnetically attracted below the electromagnet (11); an elastic assembly connected to the bottom of the metal connecting block (12) is mounted on the bottom of the second support plate (8); a metal connecting plate (13) is fixedly mounted on the top of the second support plate (8); the metal connecting block (12) and the metal connecting plate (13) are electrically connected via a connecting assembly; a storage battery (14) is fixedly mounted on the top of the third support plate (10); and the sound and light alarm (6), the storage battery (14), the metal connecting plate (13), the metal connecting block (12) and the connecting assembly are connected together via a wire (15) to form a closed circuit.

4. The frequency converter with a leakage warning device according to claim 3, characterized in that: The connection assembly comprises a metal rod (16) fixedly mounted on the bottom of the support plate (7); the top end of the metal rod (16) is electrically connected to the sound and light alarm (6) via a wire (15); a through hole (17) adapted to the metal rod (16) is provided on the surface of the metal connection block (12); the inner wall of the through hole (17) is slidably connected to the surface of the metal rod (16); and a guide assembly for improving the movement stability of the metal connection block (12) is provided between the support plate (7) and the metal connection plate (13).

5. The frequency converter with a leakage warning device according to claim 4, characterized in that: The guide assembly comprises a guide seat (18) fixedly mounted on the four corners of the metal connection block (12); a guide hole (19) is provided on the surface of the guide seat (18); a guide rod (20) corresponding to the guide hole (19) is fixedly mounted between the support plate 1 (7) and the metal connection plate (13); and the inner wall of the guide hole (19) is slidably connected to the surface of the guide rod (20).

6. The frequency converter with leakage warning device according to claim 3, characterized in that: The elastic component comprises a moving rod (21) fixedly mounted on the bottom of the metal connecting block (12); the bottom end of the moving rod (21) sequentially passes through the metal connecting plate (13) and the second supporting plate (8) and extends to the bottom of the second supporting plate (8) where a fixing plate (22) is fixedly mounted; a compression spring (23) is fixedly mounted on the top of the fixing plate (22) and located outside the moving rod (21); the top end of the compression spring (23) is fixedly connected to the bottom of the second supporting plate (8).

7. The frequency converter with a leakage warning device according to claim 6, characterized in that: The surfaces of the metal connecting plate (13) and the second supporting plate (8) are provided with moving holes (24) at positions corresponding to the moving rod (21), and the surface of the moving rod (21) is slidably connected to the inner wall of the moving hole (24).

8. The frequency converter with a leakage warning device according to claim 3, characterized in that: A pull rod (25) is fixedly installed on the front side of the metal connecting block (12), one end of the pull rod (25) passes through the sealing plate (3) and extends to the outside of the sealing plate (3), and a groove (26) adapted to the pull rod (25) is provided on the surface of the sealing plate (3), and the surface of the pull rod (25) is slidably connected to the inner wall of the groove (26).

9. The frequency converter with a leakage warning device according to claim 1, characterized in that: The mounting assembly comprises fixing grooves (27) formed at four corners of the inverter body, a mounting plate (28) is integrally formed on the back of the fixing groove (27), and a mounting hole (29) is formed on the surface of the mounting plate (28).

10. The frequency converter with a leakage warning device according to claim 1, characterized in that: The locking assembly comprises a slot (30) provided on one side of the frequency converter body (1); the surface of the sealing plate (3) is engaged with the inner wall of the slot (30); four corners of one side of the sealing plate (3) are threadedly connected with locking rods (31); one end of the locking rod (31) passes through the sealing plate (3) and extends to the outside of the sealing plate (3) to be threadedly connected with the inner wall of the slot (30).

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