Open-phase protection leakage protector

Abstract

The utility model discloses an open-phase protection leakage protector, belongs to the technical field of leakage protectors, and solves the problem that three-phase electricity is completely separated from the open-phase protection leakage protector by a certain means when the three-phase electricity is disconnected through the open-phase protection leakage protector. The top surface and the bottom surface of the protector shell are provided with connecting grooves, the cable fixing and separating assembly is arranged on the bottom surface of the protector shell and used for clamping a cable, and the distance between the cable fixing and separating assembly and the protector shell is adjustable. According to the utility model, a cable only needs to pass through the through groove of the connecting frame and extend into the connecting groove of the protector shell, then the clamping plate is manually slid, and the sealing is realized by utilizing the sliding groove, the guide strip and the guide groove. The clamping plate not only clamps a cable insulation layer, but also is fixed with the connecting frame through the guide block and the connecting sheet, thereby ensuring stable fixation of the cable. Under the condition of phase loss or electric leakage, the electromagnetic coil loses power, the metal spring is released, the insulating guide column and the connecting frame clamping plate are pushed to move, the cable is reversely separated from the protector, connection is physically disconnected, and equipment is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage protectors, in particular to a phase-loss protection leakage protector. Background Art

[0002] The phase loss protection leakage protector is an electrical safety device that integrates phase loss protection and leakage protection functions. It plays a vital role in three-phase power systems. This protector can quickly identify phase loss by monitoring the current of each phase in real time, that is, the current of one or more phases in the system is interrupted, thereby avoiding overheating, damage or unstable operation of the motor, as well as mechanical failure or fire that may be caused by it. At the same time, it also has a leakage protection function to monitor the direction of current flow. When it is detected that the current flows abnormally to the ground or an unexpected path, that is, leakage occurs, the protector will immediately cut off the power supply to prevent electric shock accidents or electrical fires. The working principle of the phase loss protection leakage protector involves current monitoring, phase loss leakage detection, automatic power off, and indication and reset after tripping. It is widely used in places with high electrical safety requirements such as industrial motor control, commercial building distribution systems, hospitals, laboratories, and any equipment using three-phase power supply. It is a key device to ensure personnel safety and equipment integrity.

[0003] When the phase loss protection leakage protector is connected, it is still connected with three cables U / V / W. After the three cables are connected to the phase loss protection leakage protector, once a phase loss leakage occurs, it is basically necessary to cut off the circuit through the phase loss protection leakage protector. However, in this process, the three-phase power cable is still connected to the phase loss protection leakage protector. When the disconnected three-phase power or the short circuit problem occurs in the phase loss protection leakage protector, it still affects the current of the subsequent three-phase power equipment, and then causes problems with the equipment. Therefore, it is necessary to ensure that the three-phase power is completely separated when the two are disconnected through the phase loss protection leakage protector.

[0004] Therefore, a phase loss protection leakage protector is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a phase loss protection leakage protector.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A phase loss protection leakage protector comprises a protector shell with connection grooves on both the top and bottom surfaces, and a cable fixing and detaching assembly arranged on the bottom surface of the protector shell and clamping the cable. The distance between the cable fixing and detaching assembly and the protector shell is adjustable. There are two states of the distance between the cable fixing and detaching assembly and the protector shell. When the cable fixing and detaching assembly is adjusted between the two states, the cable fixing and detaching assembly changes the distance between the cable and the protector shell.

[0008] Preferably, the two states of the cable fixing and detaching assembly include a fixed state and an active state. When the cable fixing and detaching assembly is in the fixed state, the cable fixing and detaching assembly clamps the cable in the connecting groove. When the cable fixing and detaching assembly is in the active state, the cable fixing and detaching assembly pushes the cable away from the connecting groove.

[0009] Preferably, a guide hole is provided in the protector shell, an electromagnetic coil is fixedly connected to the inner bottom surface of the guide hole, the electromagnetic coil can be energized, an insulating guide column is slidably connected in the guide hole, the outer ring of the insulating guide column is provided with a metal spring located in the guide hole, the lower end of the insulating guide column is fixedly connected to the cable fixing and detaching component, and the two states of the cable fixing and detaching component are switched by turning the electromagnetic coil on and off.

[0010] Preferably, the cable fixing and detaching assembly includes a connecting frame and a clamping plate, wherein the connecting frame has three through grooves, a sliding groove connected to the through grooves is provided on one side of the connecting frame, the clamping plate is slidably connected in the sliding groove, and a through groove is provided on the clamping plate, and when the clamping plate closes the through grooves, the clamping plate and the connecting frame are detachably connected.

[0011] Preferably, a card slot is opened on the inner wall of the connecting frame, and a guide block 1 is fixedly connected to the entrance of the card slot. An entrance slot for the connecting piece and the guide block 2 to enter and exit is formed between the guide block 1 and the inner wall of the card slot. A connecting piece is fixedly connected to one end of the splint, and a guide block 2 is fixedly connected to one end of the connecting piece. When the splint and the connecting frame are detachably connected, the end faces of the guide block 1 and the guide block 2 are arranged to fit together.

[0012] Preferably, a guide bar is fixedly connected to the inner wall of the slide groove, and a guide groove for accommodating the guide bar is formed on the side wall of the clamping plate.

[0013] Preferably, a plurality of anti-slip grooves are fixedly connected to the top surface of the splint.

[0014] The utility model has the following beneficial effects:

[0015] The utility model is convenient for three-phase cable connection. It only needs to pass the cable through the groove of the connection frame and insert it into the connection groove of the protector shell, and manually slide the clamping plate to close the groove under the guidance of the sliding groove and the guide strip, clamp the cable insulation layer, and fix it with the connection frame through the guide block and the connecting piece to ensure that the cable is stably fixed. In case of phase loss or leakage, the electromagnetic coil loses power, the metal spring is released, and the insulating guide column is pushed to move, so that the connection frame and the clamping plate move downward, the cable moves in the opposite direction, and the connection is disconnected to prevent short circuit, thereby protecting the safety of three-phase electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 The structure of the cable fixing and disengaging assembly in the utility model is shown in FIG. Figure 1 ;

[0018] Figure 3 The structure of the cable fixing and disengaging assembly in the utility model is shown in FIG. Figure 2 ;

[0019] Figure 4 It is a cross-sectional view of the cable fixing and detaching assembly in the utility model;

[0020] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0021] 1. Protector housing; 2. Insulating guide column; 3. Metal spring; 4. Connecting frame; 5. Clamp; 6. Through groove; 7. Anti-slip groove; 8. Card slot; 9. Guide block 1; 10. Connecting piece; 11. Guide block 2. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Phase loss protection leakage protector, such as Figure 1 As shown, it includes a protector housing 1 with connection grooves on both the top and bottom surfaces, and a cable fixing and detaching component arranged on the bottom surface of the protector housing 1 and clamping the cable.

[0024] like Figure 2-4 As shown, the cable fixing and detaching assembly includes a connection frame 4 and a clamping plate 5. There are three through grooves in the connection frame 4. A slide groove connected to the through groove is opened on one side of the connection frame 4. The clamping plate 5 is slidably connected in the slide groove, and a through groove 6 is opened on the clamping plate 5. When the clamping plate 5 closes the through groove, the clamping plate 5 and the connection frame 4 can be detachably connected. Figure 5As shown, a card slot 8 is provided on the inner wall of the connecting frame 4, and a guide block 9 is fixedly connected to the entrance of the card slot 8. An inlet groove for the connecting piece 10 and the guide block 2 11 to enter and exit is formed between the guide block 19 and the inner wall of the card slot 8. A connecting piece 10 is fixedly connected to one end of the splint 5, and a guide block 2 11 is fixedly connected to one end of the connecting piece 10. When the splint 5 is detachably connected to the connecting frame 4, the end faces of the guide block 19 and the guide block 2 11 are fitted together, a guide strip is fixedly connected to the inner wall of the slide groove, a guide groove for accommodating the guide strip is provided on the side wall of the splint 5, and a plurality of anti-slip grooves 7 are fixedly connected to the top surface of the splint 5.

[0025] The distance between the cable fixing and detaching component and the protector shell 1 is adjustable, and there are two states of the distance between the cable fixing and detaching component and the protector shell 1. When the cable fixing and detaching component is adjusted between the two states, the cable fixing and detaching component changes the distance between the cable and the protector shell 1. The two states of the cable fixing and detaching component include a fixed state and an active state. When the cable fixing and detaching component is in the fixed state, the cable fixing and detaching component clamps the cable in the connecting groove. When the cable fixing and detaching component is in the active state, the cable fixing and detaching component pushes the cable away from the connecting groove. A guide hole is provided in the protector shell 1, and an electromagnetic coil is fixedly connected to the inner bottom surface of the guide hole. The electromagnetic coil can be energized. An insulating guide column 2 is slidably connected in the guide hole. The outer ring of the insulating guide column 2 is provided with a metal spring 3 located in the guide hole. The lower end of the insulating guide column 2 is fixedly connected to the cable fixing and detaching component. The two states of the cable fixing and detaching component are switched by turning the electromagnetic coil on and off.

[0026] When the utility model needs to connect the three-phase power cable, it is only necessary to pass the cable through the through slot of the connection frame 4 and then extend it into the connection slot of the protector housing 1, and then slide the clamping plate 5 manually, so that under the guidance of the slide slot, the guide bar and the guide slot, the clamping plate 5 closes the through slot, and then the cable passes through the through slot 6 in disguise, so that the clamping plate 5 clamps the insulating cortex of the cable, and at the same time, the clamping plate 5 is fixedly connected with the connection frame 4 through the guide block 1 9, the guide block 2 11, and the connecting piece 10, so that the cable can be fixed in the connection slot of the protector housing 1 to achieve a fixed state, and if there is a phase loss, In the event of leakage, the electromagnetic coil loses power, so that the metal spring 3 no longer remains in a compressed state, and then releases elastic potential energy, so that under the expansion force of the metal spring 3, the insulating guide column 2 made of plastic material is displaced in the guide hole, and then the connecting frame 4 and the clamping plate 5 are displaced downward, and the cable is pushed to move in the opposite direction away from the protector housing 1 and the connecting groove, so as to achieve the connection between the cable and the protector housing 1 in terms of physical performance, and prevent the short circuit in the protector housing 1 from causing the three-phase power with phase loss and leakage to be turned on again, which will have a negative impact on the three-phase electrical equipment and ensure that the equipment will not be damaged.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Phase loss protection leakage protector, characterized in that: The invention comprises a protector shell (1) having connection grooves on both the top and bottom surfaces, and a cable fixing and detaching assembly arranged on the bottom surface of the protector shell (1) and clamping the cable, wherein the distance between the cable fixing and detaching assembly and the protector shell (1) is adjustable, and the distance between the cable fixing and detaching assembly and the protector shell (1) exists in two states, and when the cable fixing and detaching assembly is adjusted between the two states, the cable fixing and detaching assembly changes the distance between the cable and the protector shell (1).

2. The phase loss protection leakage protector according to claim 1, characterized in that: The two states of the cable fixing and detaching component include a fixed state and an active state. When the cable fixing and detaching component is in the fixed state, the cable fixing and detaching component clamps the cable in the connecting groove. When the cable fixing and detaching component is in the active state, the cable fixing and detaching component pushes the cable away from the connecting groove.

3. The phase loss protection leakage protector according to claim 2 is characterized in that: A guide hole is provided in the protector housing (1), an electromagnetic coil is fixedly connected to the inner bottom surface of the guide hole, the electromagnetic coil can be energized, an insulating guide column (2) is slidably connected in the guide hole, an outer ring of the insulating guide column (2) is provided with a metal spring (3) located in the guide hole, the lower end of the insulating guide column (2) is fixedly connected to the cable fixing and disengaging component, and the two states of the cable fixing and disengaging component are switched by turning the electromagnetic coil on and off.

4. The phase loss protection leakage protector according to claim 1, characterized in that: The cable fixing and detaching assembly comprises a connecting frame (4) and a clamping plate (5), wherein three through grooves are arranged in the connecting frame (4), a sliding groove connected to the through grooves is provided on one side of the connecting frame (4), the clamping plate (5) is slidably connected in the sliding groove, and a through groove (6) is provided on the clamping plate (5), and when the clamping plate (5) closes the through grooves, the clamping plate (5) and the connecting frame (4) are detachably connected.

5. The phase loss protection leakage protector according to claim 4 is characterized in that: A slot (8) is provided on the inner wall of the connecting frame (4); a guide block 1 (9) is fixedly connected to the entrance of the slot (8); an entrance groove for the connecting piece (10) and the guide block 2 (11) to enter and exit is formed between the guide block 1 (9) and the inner wall of the slot (8); one end of the clamping plate (5) is fixedly connected to the connecting piece (10); one end of the connecting piece (10) is fixedly connected to the guide block 2 (11); when the clamping plate (5) and the connecting frame (4) are detachably connected, the end faces of the guide block 1 (9) and the guide block 2 (11) are arranged to fit together.

6. The phase loss protection leakage protector according to claim 5, characterized in that: A guide strip is fixedly connected to the inner wall of the slide groove, and a guide groove for accommodating the guide strip is provided on the side wall of the clamping plate (5).

7. The phase loss protection leakage protector according to claim 4, characterized in that: A plurality of anti-slip grooves (7) are fixedly connected to the top surface of the clamping plate (5).

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