CN220273312U - Overload protection device for transformer - Google Patents
Overload protection device for transformer Download PDFInfo
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- CN220273312U CN220273312U CN202321576431.3U CN202321576431U CN220273312U CN 220273312 U CN220273312 U CN 220273312U CN 202321576431 U CN202321576431 U CN 202321576431U CN 220273312 U CN220273312 U CN 220273312U
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- armature
- overload protection
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- transformer
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- 239000011159 matrix material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses an overload protection device for a transformer, which relates to the field of overload protection and aims at solving the problems that the structure of the existing overload protection device for the transformer is complex, device elements are required to be replaced after overload protection is carried out, and the working efficiency of the transformer is reduced.
Description
Technical Field
The utility model relates to the field of overload protection, in particular to an overload protection device for a transformer.
Background
The transformer is mainly used for changing alternating voltage, is basic equipment for power transmission and distribution, is widely applied to places such as cities, factories and traffic roads, and is required to be internally provided with an overload protection device in order to ensure normal operation of the transformer and improve the service life of the transformer;
the existing overload protection device for the transformer is complex in structure, device elements are needed to be replaced manually after overload protection is carried out, the transformer is in an open-circuit state when the traditional protection device is used for protection, the working efficiency of the transformer is reduced, and the overload protection device for the transformer is provided for solving the problem.
Disclosure of Invention
The utility model aims to provide an overload protection device for a transformer, so as to solve the problems.
In order to achieve the above purpose, the following technical scheme is provided:
the utility model provides a transformer overload protection device, includes the box, the base is installed to the bottom of box, the inside input armature of installing along its one side edge of base, the one end of input armature is connected with the clamping piece, the centre of clamping piece presss from both sides cable armature and overload armature, first cable is installed to the outside one end of cable armature, the output of first cable is connected with first output armature, first conducting plate is installed to upper portion one side of overload armature, the opposite side of first conducting plate is provided with the contact plate, the other end top of contact plate is provided with the support and is connected with the base.
Preferably, an overload protection resistor is arranged below the support, a second conductive plate is arranged between the overload protection resistor and the support and connected with the overload protection resistor, a second cable is arranged below the second conductive plate, the output end of the second cable is connected with a second output armature, and the first output armature and the second output armature are far away from each other.
Preferably, the other side at the upper part of the overload armature is connected with a controller matrix for bearing an electromagnetic push rod and fixing a first cable, a controller is arranged above the middle part of the controller matrix, the controller can detect current flowing through the controller, the electromagnetic push rod is arranged at two sides of the controller and is electrically connected with the two sides of the controller, and the controller controls the electromagnetic push rod to perform different actions according to the detected current.
Preferably, the contact plate can be in contact with or not in contact with the overload protection resistor, and the overload protection device of the transformer can conduct current to the first output armature and/or the second output armature according to the contact relation between the contact plate and the overload protection resistor, so that the current can flow through the overload protection resistor to realize overload protection.
Preferably, the output end of the first cable is detachably connected with the first output armature, and the contact plate pushes the first cable to move away from the first output armature when moving towards the overload protection resistor, so that the current is converted from the output of the first output armature to the output of the second output armature.
Preferably, the output end of the first cable is fixedly connected with the first output armature, and when the contact plate contacts with the overload protection resistor, the current is output through the first output armature and the second output armature respectively.
Preferably, an insulating spring is connected between the contact plate and the bracket and used for resetting the contact plate.
Preferably, the box body is connected with the base in a snap-fit mode.
The beneficial effects of the utility model are as follows:
1. the device is provided with an overload protection circuit with a resistor, which is connected with a normal working circuit loop of the transformer, when the transformer works normally, the protection circuit is not connected into the main loop and is in an open circuit state, and when the transformer is overloaded, namely the current in the main loop is large, the protection circuit is connected into the main loop to shunt the transformer, so that the transformer can work normally continuously;
2. the device is characterized in that a controller is integrated into a main loop to monitor the current in the main loop in real time, when the current is overlarge (overload state), the two sides of the controller are electrified to control the electromagnetic push rod to be electrified and stretched, the contact plate is pushed to be connected with an overload protection resistor, and the protection circuit is connected into the main loop to shunt so as to realize overload protection;
3. the device is characterized in that a spring is arranged between the contact plate and the support to reset the contact plate, when current in a main loop is normal, the controller controls the electromagnetic push rods at two sides to be powered off, the compressed spring is released to extend, the electromagnetic push rods retract, the contact plate is separated from the resistor, the protection circuit is disconnected, and the contact plate is reset, so that the device can perform continuous overload protection;
in summary, the utility model is connected into a protection circuit to shunt the current in the main circuit loop when the transformer is overloaded, so that the transformer works normally, the working efficiency of the transformer is improved, and when the loop current is normal, the protection circuit is disconnected, and the transformer works normally.
Drawings
FIG. 1 is a schematic view of the external structure of the present utility model;
FIG. 2 is a schematic view of a first internal structure of the present utility model;
FIG. 3 is a schematic diagram of a second internal structure of the present utility model;
FIG. 4 is a schematic view of a third internal structure of the present utility model;
FIG. 5 is an enlarged schematic view of the structure of each armature at the input end of the present utility model;
FIG. 6 is an enlarged schematic view of the components of the controller of the present utility model;
FIG. 7 is an enlarged schematic diagram of the connection of the protection circuit of the present utility model;
in the figure: 1. a case; 2. a base; 3. an input armature; 4. a clamping piece; 5. a cable armature; 6. a first cable; 7. a first output armature; 8. an overload armature; 9. a controller base; 10. a controller; 11. an electromagnetic push rod; 12. a first conductive plate; 13. a contact plate; 14. a bracket; 15. an insulating spring; 16. overload protection resistor; 17. a second conductive plate; 18. a second cable; 19. and a second output armature.
Detailed Description
The technical solutions of the structural schematic diagrams in the embodiments of the present utility model will be clearly and fully described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 7, an overload protection device for a transformer, comprising a case 1, is characterized in that: the bottom of the box body 1 is provided with a base 2, an input armature 3 is arranged inside the base 2 along one side edge of the base, one end of the input armature 3 is connected with a clamping piece 4, a cable armature 5 and an overload armature 8 are clamped between the clamping piece 4, a first cable 6 is arranged at one end of the outer side of the cable armature 5, the output end of the first cable 6 is connected with a first output armature 7, one side of the upper part of the overload armature 8 is provided with a first conductive plate 12, the other side of the first conductive plate 12 is provided with a contact plate 13, and a bracket 14 is arranged above the other end of the contact plate 13 and is connected with the base 2;
in some embodiments, an overload protection resistor 16 is disposed below the support 14, a second conductive plate 17 is mounted between the overload protection resistor 16 and the support 14 and connected with the overload protection resistor 16, a second cable 18 is mounted below the second conductive plate 17, an output end of the second cable 18 is connected with a second output armature 19, and the first output armature 7 is disposed far away from the second output armature 19;
in some embodiments, the other side of the upper portion of the overload armature 8 is connected with a controller base 9 for carrying an electromagnetic push rod 11 and fixing the first cable 6, a controller 10 is installed above the middle portion of the controller base 9, the controller 10 can detect the current flowing through the controller 10, the electromagnetic push rod 11 is installed at two sides of the controller 10 and is electrically connected with the two sides of the controller 10, and the controller 10 controls the electromagnetic push rod 11 to perform different actions according to the detected current;
in some embodiments, the contact plate 13 may be in contact with or not in contact with the overload protection resistor 16, and the overload protection device of the transformer may conduct current to the first output armature 7 and/or the second output armature 19 according to the contact relationship between the contact plate 13 and the overload protection resistor 16, so that the current may flow through the overload protection resistor 16 to realize overload protection;
in some embodiments, the output end of the first cable 6 is detachably connected with the first output armature 7, and when the contact plate 13 moves towards the overload protection resistor 16, the first cable 6 is pushed to move away from the first output armature 7, so that the current is converted from being output by the first output armature 7 to being output by the second output armature 19;
in some embodiments, the output end of the first cable 6 is fixedly connected with the first output armature 7, and when the contact plate 13 contacts with the overload protection resistor 16, the current is output through the first output armature 7 and the second output armature 19 respectively;
in some embodiments, an insulating spring 15 is connected between the contact plate 13 and the bracket 14, and is used for returning the contact plate 13;
in some embodiments, the box 1 and the base 2 are connected by a buckle type;
when the device is used, the device is connected into a transformer circuit, when the transformer works normally, current enters the first cable 6 through the input armature 3 and the cable armature 5 and then is output through the first output armature 7, and the circuit works normally;
when the transformer is overloaded, the controller 10 detects that the current in the main loop is overlarge, the two sides of the controller 10 are electrified to control the electromagnetic push rods 11 to be electrified and stretched, the contact plate 13 is pushed to be connected with the overload protection resistor 16, part of current enters the overload protection resistor 16 after passing through the overload armature 8, the first conductive plate 12 and the contact plate 13, and is output through the second output armature 19 after passing through the second conductive plate 17 and the second cable 18, the protection circuit is connected into the main loop to split, overload protection is achieved, when the current in the main loop is normal, the controller 10 controls the two sides of the electromagnetic push rods 11 to be powered off, the compressed insulating spring 15 is released to stretch, the electromagnetic push rods 11 are retracted, the contact plate 13 is separated from the overload protection resistor 16, the protection circuit is disconnected, and the contact plate 13 is reset;
the present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
Claims (8)
1. The utility model provides a transformer overload protection device, includes box (1), its characterized in that: the base (2) is installed to the bottom of box (1), input armature (3) are installed along its one side edge to inside base (2), the one end of input armature (3) is connected with clamping piece (4), cable armature (5) and overload armature (8) are pressed from both sides in the centre of clamping piece (4), first cable (6) are installed to the outside one end of cable armature (5), the output of first cable (6) is connected with first output armature (7), first conducting plate (12) are installed to upper portion one side of overload armature (8), the opposite side of first conducting plate (12) is provided with contact plate (13), the other end top of contact plate (13) is provided with support (14) and is connected with base (2).
2. The overload protection device for a transformer as claimed in claim 1, wherein: the overload protection resistor (16) is arranged below the support (14), a second conductive plate (17) is arranged between the overload protection resistor (16) and the support (14) and connected with the overload protection resistor, a second cable (18) is arranged below the second conductive plate (17), a second output armature (19) is connected to the output end of the second cable (18), and the first output armature (7) and the second output armature (19) are far away from each other.
3. A transformer overload protection device according to claim 2, wherein: the opposite side on overload armature (8) upper portion is connected with controller base member (9) for bear electromagnetic push rod (11) and fixed first cable (6), controller (10) are installed to the middle part top of controller base member (9), controller (10) can detect the electric current that flows controller (10), electromagnetic push rod (11) are installed and rather than electric connection to both sides of controller (10), controller (10) are according to its electric current size control electromagnetic push rod (11) that detects and are carried out different actions.
4. A transformer overload protection device according to claim 3 wherein: the contact plate (13) can be in contact with or not in contact with the overload protection resistor (16), and the overload protection device of the transformer can conduct current to the first output armature (7) and/or the second output armature (19) according to the contact relation between the contact plate (13) and the overload protection resistor (16), so that the current can flow through the overload protection resistor (16) to realize overload protection.
5. The overload protection device for transformers according to claim 4, wherein: the output end of the first cable (6) is detachably connected with the first output armature (7), and the contact plate (13) pushes the first cable (6) to move in a direction far away from the first output armature (7) when moving in the direction of the overload protection resistor (16), so that current is converted from output of the first output armature (7) to output of the second output armature (19).
6. The overload protection device for transformers according to claim 4, wherein: the output end of the first cable (6) is fixedly connected with the first output armature (7), and when the contact plate (13) is contacted with the overload protection resistor (16), the current is output through the first output armature (7) and the second output armature (19) respectively.
7. A transformer overload protection device according to any one of claims 1 to 6 wherein: an insulating spring (15) is connected between the contact plate (13) and the bracket (14) and is used for resetting the contact plate (13).
8. The overload protection device for transformers according to claim 7 wherein: the box body (1) is connected with the base (2) in a buckling mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321576431.3U CN220273312U (en) | 2023-06-20 | 2023-06-20 | Overload protection device for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321576431.3U CN220273312U (en) | 2023-06-20 | 2023-06-20 | Overload protection device for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220273312U true CN220273312U (en) | 2023-12-29 |
Family
ID=89303662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321576431.3U Active CN220273312U (en) | 2023-06-20 | 2023-06-20 | Overload protection device for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220273312U (en) |
-
2023
- 2023-06-20 CN CN202321576431.3U patent/CN220273312U/en active Active
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