Straight-through type electromagnetic leakage protector

Abstract

The utility model relates to the technical field of leakage protectors, in particular to a cross-core electromagnetic leakage protector, which comprises a shell, an iron core is arranged in the shell, and a first coil is wound on the iron core. The surface of the shell is connected with a control block, an unhooking assembly is arranged in the control block, the unhooking assembly comprises magnetic steel, a second coil, a cylindrical iron core and a control piece, the second coil is wound on the outer surface of the magnetic steel, and the cylindrical iron core is embedded in the magnetic steel. Through the connection of the first coil, the second coil and the magnetic steel, when the residual current detected by the first coil reaches a preset value, the second coil is synchronously increased to a rated value, and under the action of the second coil and the cylindrical iron core, the magnetism around the iron core is changed, the magnetism reaches a preset value, and the cylindrical iron core attracts the control sheet. Power-off or alarm operation in the equipment is realized, the detection effect of electric leakage of the equipment is achieved, the interior is controlled through electromagnetism, no electronic circuit is used, the structure is simple, and the performance is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage protectors, in particular to a through-type electromagnetic leakage protector. Background Art

[0002] A leakage protector, also known as a residual current detection and controller device, works with a circuit breaker with a tripping function to protect people or line safety when a leakage fault occurs in equipment or lines.

[0003] The use of leakage protectors can improve personal safety and the reliability of line operation. However, the existing leakage protectors use complex electronic circuits to achieve the effect of power-on protection. In a humid environment or when a neutral line is missing or the device is running for a long time, the internal circuits are prone to short circuits and open circuits, which affects the service life and performance of the leakage protector. Utility Model Content

[0004] The purpose of the utility model is to provide a through-type electromagnetic leakage protector to solve the problem proposed in the above-mentioned background technology that the effect of power-on protection is achieved through complex electronic circuits inside. In a humid environment or when a neutral wire is missing or during long-term operation, the internal circuits are prone to short circuits and open circuits, affecting the service life and performance of the leakage protector.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a through-type electromagnetic leakage protector, comprising a shell, a control block connected to the surface of the shell, a decoupling assembly arranged inside the control block, the decoupling assembly comprising a magnetic steel, a second coil, a cylindrical iron core and a control sheet, the second coil is wound on the outer surface of the magnetic steel, the control sheet acts on the inner side of the control block, a terminal row is provided on the surface of the control block, a cover plate is movably connected to the surface of the control block, a support plate is fixedly connected to the inner side of the control block, a groove is provided on the inner side of the lower part of the shell, and an iron core is embedded and connected to the inner side of the groove, a first coil is wound on the outer surface of the iron core, an amplifier is connected to the surface of the first coil, the first coil and the second coil are connected through the amplifier, and a round through hole is provided on the surface of the shell.

[0006] Preferably, the control block is in a convex shape and acts on the upper surface of the housing, and the terminal rows are evenly distributed on both sides of the control block.

[0007] Preferably, the cross section of the support plate is in an "L" shape and acts on the inner position of the control block.

[0008] Preferably, the second coil is in the shape of a long strip and is wound around the outer surface of the magnetic steel, the iron core is in the shape of a cylinder and is embedded in the magnetic steel, and the cylindrical iron core is magnetically connected to the control sheet through the second coil.

[0009] Preferably, the core is in a ring shape.

[0010] Preferably, the annular core acts on the position of the through hole through the groove in the shell. Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. Through the connection of the first coil, the second coil and the magnetic steel, when the residual current detected by the first coil reaches a predetermined value, the second coil increases to the rated value synchronously. Under the action of the second coil and the cylindrical iron core, the magnetism around the iron core changes, and the magnetism reaches a predetermined value. The cylindrical iron core adsorbs the control sheet to realize the power-off or alarm operation inside the equipment, and achieves the effect of detecting and controlling the leakage of the equipment. The internal electromagnetic control is used without the use of electronic circuits, the structure is simple, the performance is reliable, and the power will be cut off even if leakage occurs in the absence of the neutral line, which better protects personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view stereoscopic schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a side perspective schematic diagram of the structure of the utility model;

[0014] Figure 3 It is a three-dimensional schematic diagram of the internal parts distribution of the utility model;

[0015] Figure 4 This is a circuit diagram of the utility model.

[0016] In the figure: 1. housing; 2. control block; 3. terminal block; 4. cover plate; 5. decoupling assembly; 6. support plate; 7. magnet; 8. second coil; 9. iron core; 10. through hole; 11. cylindrical iron core; 12. control sheet; 13. first coil. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4 , an embodiment provided by the utility model:

[0019] A through-type electromagnetic leakage protector comprises a shell 1, a control block 2 is connected to the surface of the shell 1, a decoupling assembly 5 is arranged inside the control block 2, the decoupling assembly 5 comprises a magnetic steel 7, a second coil 8, a cylindrical iron core 11 and a control sheet 12, the second coil 8 is wound on the outer surface of the magnetic steel 7, the cylindrical iron core 11 is embedded in the magnetic steel 7, the control sheet 12 acts on the inner side of the control block 2, a terminal row 3 is provided on the surface of the control block 2, a cover plate 4 is movably connected to the surface of the control block 2, and a support plate 6 is fixedly connected to the inner side of the control block 2.

[0020] A groove is provided on the inner side of the lower part of the housing 1, and an iron core 9 is connected to the inner side of the groove. A first coil 13 is wound on the outer surface of the iron core 9, and an amplifier is connected to the surface of the first coil 13. The first coil 13 and the second coil 8 are connected through the amplifier. A through hole 10 is provided on the surface of the housing 1, and the connection between the control block 2 and the terminal row 3 is facilitated by the terminal row 3 to connect the wire of the first coil 13 and the control block 2. Through the connection between the first coil 13 and the second coil 8 and the magnetic steel 7, when the residual current detected by the first coil 13 reaches a predetermined value, the second coil 8 reaches the rated value synchronously. Under the action of the second coil 8 and the cylindrical iron core 7, the magnetism around the iron core changes, and the magnetism reaches a predetermined value. The cylindrical iron core attracts the control sheet to realize the power-off or alarm operation inside the equipment, and achieve the leakage detection and control effect of the equipment.

[0021] Furthermore, the control block 2 is in a "convex" shape and acts on the upper surface of the shell 1. The terminal rows 3 are evenly distributed on both sides of the control block 2. Through the connection between the control block 2 and the components in the shell 1, under the action of the electrical components in the shell 1, the control effect is achieved in the control block 2.

[0022] Furthermore, the cross section of the support plate 6 is in an "L" shape and acts on the internal position of the control block 2. The mechanical unhooking part in the unhooking component 5 is the prior art, and this application does not make any improvements, and no further explanation is given here.

[0023] Furthermore, the magnetic steel 7 is cylindrical, and through the connection between the magnetic steel 7 and the support plate 6 and the connection between the second coil 8 and the magnetic steel 7 , the magnetic control effect on the cylindrical iron core 11 inside the magnetic steel 7 is achieved.

[0024] Furthermore, the iron core 9 is in a circular ring shape, the iron core 9 and the through hole 10 are engaged and connected, the outer surface of the iron core 9 is wound with a first coil 13, and the wire (such as Figure 4 ) When there is working current, the detection effect is achieved according to the change of the electromagnetic magnetism inside the shell 1.

[0025] Furthermore, the cylindrical iron core 11 is cylindrical in shape, and the cylindrical iron core 11 acts on the inside of the magnetic steel 7. The cylindrical iron core 11 is magnetically connected to the control plate 12 through the second coil 8. Through the action of the cylindrical iron core 11, the control effect of the action angle of the control plate 12 is achieved, thereby completing the control operation of the internal circuit of the device.

[0026] Working principle: through the use of through-type electromagnetic leakage protector and circuit breaker, when the working current of the wire passing through the through hole 10 is balanced, the total magnetic flux generated in the iron core 9 is zero, and the circuit works normally. When any phase or several phases in the wire leak to the ground, the magnetic flux balance of the iron core 9 is destroyed. When it exceeds the rated value, the magnetic intensity induced in the first coil 13 will be transmitted to the second coil 8. The second coil 8 forms a magnetic intensity with the magnetic steel 7 and the cylindrical iron core 11, so that the control plate 12 is attracted and the unhooking mechanism is activated to achieve protection.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A through-type electromagnetic leakage protector, comprising a housing (1), characterized in that: The surface of the housing (1) is connected to a control block (2), and a decoupling assembly (5) is arranged inside the control block (2). The decoupling assembly (5) comprises a magnetic steel (7), a second coil (8), a cylindrical iron core (11) and a control plate (12). The second coil (8) is wound on the outer surface of the magnetic steel (7), the cylindrical iron core (11) is embedded in the magnetic steel (7), and the control plate (12) acts on the inner side of the control block (2). A terminal block (3) is provided on the surface of the control block (2), a cover plate (4) is movably connected to the surface of the control block (2), and a support plate (6) is fixedly connected to the inner side of the control block (2). A groove is provided on the inner side of the lower part of the housing (1), and an iron core (9) is embedded and connected to the inner side of the groove. A first coil (13) is wound on the outer surface of the iron core (9), and an amplifier is connected to the surface. The second coil (8) and the first coil (13) are connected via the amplifier. A through hole (10) is provided on the surface of the housing (1).

2. A through-hole electromagnetic leakage protector according to claim 1, characterized in that: The control block (2) is in a "convex" shape and acts on the upper surface of the housing (1), and the terminal rows (3) are evenly distributed on both sides of the control block (2).

3. The through-type electromagnetic leakage protector according to claim 1, characterized in that: The support plate (6) has an L-shaped cross section and acts on an inner position of the control block (2).

4. The through-type electromagnetic leakage protector according to claim 1, characterized in that: The magnetic steel (7) is cylindrical.

5. The through-type electromagnetic leakage protector according to claim 1, characterized in that: The second coil (8) is in the shape of a long strip and is wound around the outer surface of the magnetic steel (7), and the iron core (9) is in the shape of a circular ring.

6. The through-type electromagnetic leakage protector according to claim 1, characterized in that: The iron core (9) acts on the position of the through hole (10) through the groove in the housing (1).

7. The through-type electromagnetic leakage protector according to claim 1, characterized in that: The cylindrical iron core (11) is cylindrical in shape, acts on the interior of the magnetic steel (7), and is magnetically connected to the control plate (12) via the second coil (8).

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