Current transformer open-circuit protection maintenance terminal with energy storage and push-away mechanism

Abstract

This invention relates to the field of power system technology, and more particularly to a current transformer anti-open-circuit maintenance terminal with a storage push-off mechanism. The current transformer terminal has a housing, two wire interfaces disposed on the housing, and two movable conductive keys on each of the two wire interfaces. An elastic reset mechanism is provided between the conductive keys and the housing, and a conductive plate is also provided on the housing. At least two conductive keys share a conductive plate, and the two conductive keys maintain contact with the conductive plate for conductivity. An elastic push-off mechanism is provided on the left side of the current transformer terminal. The elastic push-off mechanism includes at least two push rods, each equipped with a reset spring mechanism. Thus, during the disassembly and maintenance of the current transformer's testing equipment, the two wire interfaces can be connected via the conductive keys, short-circuiting the two ends of the current transformer's secondary winding, allowing maintenance without power outages and ensuring continuous operation of the power system.

Description

Technical Field

[0001] This invention relates to the field of power system technology, and in particular to a current transformer anti-open-circuit maintenance terminal. Background Technology

[0002] When a current transformer is working, it converts a large primary current into a small secondary current for measurement. The secondary side must not be open-circuited. Because the secondary winding of a current transformer is more numerous than the primary winding, if the secondary side of the current transformer is suddenly open-circuited during circuit operation, a relatively high voltage will be generated at the two disconnected ends. This high voltage will cause the inter-turn breakdown of the current transformer windings, resulting in a short circuit. More importantly, it will injure the operators. Therefore, the secondary current circuit must not be open-circuited during operation.

[0003] The secondary current loop transmits the low-current signal transformed by the current transformer to measuring instruments, protective relays, and automated control equipment. This signal transmission is typically used for maintaining and monitoring the stability and safety of the system.

[0004] In traditional maintenance methods, when the detection equipment in the secondary current circuit malfunctions or needs maintenance, power outages are usually required for maintenance. This not only affects the continuous operation of the power system, but may also lead to safety hazards and economic losses. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this section, the abstract and title of the invention. Such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution;

[0008] The current transformer anti-open-circuit maintenance terminal with a power storage and push-off mechanism includes a current transformer terminal and a detection device terminal. The current transformer terminal is used to connect the current transformer and has two wire interfaces. A socket is conductively connected to the left side of the wire interface. The detection device terminal has two conductive plugs. The two conductive plugs and the two sockets adopt a mating plug-in structure. The current transformer terminal and the detection device terminal are detachably connected. The detection device terminal is the terminal that outputs current to the detection device.

[0009] The current transformer terminal block has a housing, and two wire interfaces are disposed on the housing;

[0010] Two movable conductive keys are provided on each of the two wire interfaces;

[0011] An elastic reset mechanism is provided between the conductive key and the housing.

[0012] The conductive key has a reset state and a raised state;

[0013] The elastic reset mechanism drives the conductive key to reset. When the conductive key is in the reset state, the conductive part of the conductive key contacts the conductive part of the wire interface to complete the conduction.

[0014] It also includes a conductive sheet disposed on the housing;

[0015] At least two conductive bonds share a conductive sheet, and the two conductive bonds maintain contact with the conductive sheet to conduct electricity.

[0016] When the two conductive keys are in the reset state, the conductive parts on the two conductive keys are simultaneously connected to the conductive sheet, thereby enabling the two wire interfaces to be connected.

[0017] When the conductive key is in the raised state, the conductive part on the conductive key is disconnected from the conductive part of the wire interface, thereby disconnecting the two wire interfaces.

[0018] A spring-loaded push-away mechanism is provided on the left side of the current transformer terminal block.

[0019] The elastic push-off mechanism includes at least two push rods, and each of the at least two push rods is provided with a return spring mechanism;

[0020] After the current transformer terminals and the detection device terminals are plugged in, at least two push rods are pressed, at least two push rods are retracted, and the reset spring mechanism is in a stored state.

[0021] A locking mechanism is also provided between the current transformer terminals and the detection device terminals;

[0022] At least two push rods have insertion ends on their right sides;

[0023] A connector matching the insertion end is provided between the conductive part of the conductive key and the conductive part of the wire interface.

[0024] At least two insertion ends are inserted into the connector, pushing the conductive key upward to achieve insulation between the conductive part of the conductive key and the conductive part of the wire connector;

[0025] After the locking mechanism between the current transformer terminals and the detection device terminals is unlocked, the current transformer terminals and the detection device terminals are separated by the reset thrust of the reset spring mechanism.

[0026] During the separation of the current transformer terminals and the detection device terminals:

[0027] First, the push rod moves to the left and the insertion end is pulled out of the socket, and the conductive part of the conductive key is connected to the conductive part of the wire interface;

[0028] Then, the two conductive plugs are separated from the two sockets.

[0029] The above design firstly involves setting conductive keys. When the conductive keys are in the reset state, the conductive parts on both conductive keys are simultaneously connected to the conductive sheet, thereby enabling the two wire interfaces to be connected. In this way, when the current transformer testing equipment is disassembled and repaired, the two wire interfaces can be connected through the conductive keys, and the two ends of the secondary winding of the current transformer can be short-circuited without power outages, ensuring the continuous operation of the power system.

[0030] Secondly, by setting a push rod, when disassembling or installing the current transformer terminals and the detection device terminals, during installation, the insertion end is inserted into the connector, pushing the conductive key upward to achieve insulation between the conductive part of the conductive key and the conductive part of the wire interface; during disassembly, the insertion end is pushed out of the connector by the elastic force of the elastic push-away mechanism, and the conductive key is automatically reset by the elastic reset mechanism. In this way, during the disassembly, assembly, and maintenance of the current transformer detection equipment, the two wire interfaces can be automatically connected through the conductive key, automatically short-circuiting the two ends of the secondary winding of the current transformer, avoiding damage to the equipment or leaving safety hazards caused by worker operation errors that induce extremely high electrodynamics in the secondary winding.

[0031] Preferably, the conductive key is provided with a first spring as an elastic reset mechanism. One end of the first spring is connected to the conductive key, and the other end is connected to the top of the housing. The insertion end of the push rod is inserted into the insertion interface of the conductive key. The conductive key moves upward into the raised state, the first spring is compressed, and the conductive part of the conductive key remains insulated from the conductive part of the wire interface. When the insertion end of the push rod is pulled out from below the conductive key, the first spring releases its compression force, the conductive key moves downward into the reset state, and the conductive part of the conductive key contacts the conductive part of the wire interface to conduct electricity. The two wire interfaces of the current transformer's terminals are short-circuited. By setting the first spring as an elastic reset mechanism, the structure is simple and the cost is reduced. It can also quickly and stably reset the conductive key to contact the conductive part of the wire interface to conduct electricity when the insertion end of the push rod is pulled out, preventing unstable contact from causing a high induced electromotive force in the secondary coil.

[0032] Preferably, the push rod is provided with a second spring as a reset spring mechanism. One end of the second spring is connected to the push rod, and the other end is connected to the left side of the housing. The second spring is used as a reset spring mechanism to ensure the rapid separation of the current transformer terminal and the detection device terminal. Slow separation when opening leads to unstable contact and induced electromotive force.

[0033] Preferably, the insertion end of the push rod is provided with an inclined surface that lifts up the conductive key; another inclined surface is provided below the conductive key as a plug interface, and the other inclined surface of the conductive key is arranged opposite to the inclined surface of the insertion end of the push rod. By providing the inclined surface and the other inclined surface, it is convenient for the insertion end to be inserted into the plug interface to lift up the conductive key and keep it insulated from the conductive part of the wire interface.

[0034] Preferably, the detection device terminal block has two conductive pins, which are respectively located on the right side of two conductive plugs; the current transformer terminal block has two conductive contact pieces, which are located in the two wire interfaces; the conductive plug is inserted into the socket, and the conductive pins make contact with the conductive contact pieces to conduct electricity, thereby connecting the current transformer terminal block with the detection device terminal block; the conductive contact between the conductive pins and the conductive contact pieces facilitates a stable conductive connection between the current transformer terminal block and the detection device terminal block.

[0035] Preferably, the length of the conductive pin inserted into the conductive contact piece is greater than the length of the push rod insertion end extending into the insertion interface below the conductive key; this ensures that the conductive key falls first, the conductive part on the conductive key contacts and connects with the conductive part of the wire interface first, and then the conductive pin separates from the conductive contact piece, ensuring that the secondary circuit of the current transformer will never be open-circuited, and ensuring the safety of the current transformer anti-open-circuit maintenance terminal with the energy storage push-away mechanism during use.

[0036] Preferably, the conductive contact piece is an elastic conductive contact piece, and the elastic contraction position of the conductive contact piece is the contact position between the conductive pin and the conductive contact piece; the conductive contact piece is elastic, ensuring a stable conductive contact connection between the conductive pin and the conductive contact piece.

[0037] Preferably, the conductor pin is configured as a cylindrical cone shape; this facilitates insertion into the conductive contact piece of the conductor pin and achieves tight contact.

[0038] Preferably, the conductive key is provided with a limiting ear, which limits the lowest falling position of the conductive key. The limiting ear is located outside the housing. The conductive key is also provided with a limiting block, which is located inside the current transformer terminal block and is located at the highest rising position of the conductive key. This limits the upper and lower limit positions of the conductive key, preventing the conductive key from falling off or deforming the conductive part of the wire interface, and ensuring the stability of the current transformer's open-circuit protection maintenance terminal with the energy storage push-away mechanism after multiple maintenance operations.

[0039] Preferably, a rotating plug is provided above the wiring terminals of the detection device, and the rotating plug is rotatably engaged with the wiring terminals of the detection device;

[0040] The housing is provided with a slot;

[0041] The locking mechanism is achieved by rotating the insert block and the slot.

[0042] The rotating plug is inserted into the slot and the current transformer terminal is fixedly connected to the detection device terminal.

[0043] The rotating plug disengages from the slot, and the push rod pushes the detection device wiring terminal away from the fixed current transformer wiring terminal. The insertion of the rotating plug into the slot facilitates a quick and stable locking of the detection device wiring terminal and the fixed current transformer wiring terminal. The disengagement of the rotating plug from the slot facilitates the separation of the detection device wiring terminal and the fixed current transformer wiring terminal. The reset spring mechanism on the push rod ensures that the detection device wiring terminal disengages quickly. Attached Figure Description

[0044] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0045] Figure 1 This is a schematic diagram of the overall structure of the current transformer anti-open-circuit maintenance terminal with a power storage and push-away mechanism according to the present invention.

[0046] Figure 2 This is a schematic diagram of the current transformer terminal and the detection device terminal separation structure of the present invention;

[0047] Figure 3 This is a schematic diagram of the structure in which the terminals of the current transformer and the terminals of the detection device of the present invention are connected together. Detailed Implementation

[0048] To make the above-mentioned objectives, features and advantages of the present invention more readily understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0049] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0050] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0051] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in less than one implementation of the invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0052] Example 1

[0053] refer to Figures 1-3 The current transformer anti-open-circuit maintenance terminal with a power storage and push-off mechanism includes a current transformer terminal 1 and a detection device terminal 2. The current transformer terminal 1 is a terminal for connecting the current transformer and has two wire interfaces 11. A socket 12 is conductively connected to the left side of the wire interface 11. The detection device terminal 2 has two conductive plugs 21. The two conductive plugs 21 and the two sockets 12 adopt a mating plug-in structure. The current transformer terminal 1 and the detection device terminal 2 are detachably connected. The detection device terminal 2 is a terminal for outputting current to the detection device.

[0054] The current transformer terminal block 1 has a housing 13, and two wire interfaces 11 are disposed on the housing 13;

[0055] Two movable conductive keys 14 are respectively provided on the two wire interfaces 11;

[0056] An elastic reset mechanism is provided between the conductive key 14 and the housing 13;

[0057] Conductive key 14 has a reset state and a raised state;

[0058] The elastic reset mechanism drives the conductive key 14 to reset. When the conductive key 14 is in the reset state, the conductive part of the conductive key 14 contacts the conductive part of the wire interface 11 to complete the conduction.

[0059] It also includes a conductive sheet 15 disposed on the housing 13;

[0060] At least two conductive bonds 14 share a conductive sheet 15, and the two conductive bonds 14 and the conductive sheet 15 are in contact and conduct electricity.

[0061] When the two conductive keys 14 are in the reset state, the conductive parts on the two conductive keys 14 are also connected to the conductive sheet 15, thereby enabling the two wire interfaces 11 to be connected.

[0062] When the conductive key 14 is in the raised state, the conductive part on the conductive key 14 is disconnected from the conductive part of the wire interface 11, thereby disconnecting the two wire interfaces 11.

[0063] A spring-loaded push-off mechanism is provided on the left side of the current transformer terminal 1.

[0064] The elastic push-away mechanism includes at least two push rods 16, and each of the at least two push rods 16 is provided with a return spring mechanism;

[0065] After the current transformer terminal 1 and the detection device terminal 2 are plugged in, at least two push rods 16 are pressed, at least two push rods 16 are retracted, and the reset spring mechanism is in a stored state.

[0066] A locking mechanism 22 is also provided between the current transformer terminal 1 and the detection device terminal 2;

[0067] At least two push rods 16 have insertion ends 161 on their right sides;

[0068] A plug interface 141 matching the insertion end 161 is provided between the conductive part of the conductive key 14 and the conductive part of the wire interface 11.

[0069] At least two insertion ends 161 are inserted into the insertion interface 141, pushing the conductive key 14 upward to achieve insulation between the conductive part of the conductive key 14 and the conductive part of the wire interface 11.

[0070] After the locking mechanism 22 between the current transformer terminal 1 and the detection device terminal 2 is unlocked, it is subjected to the reset thrust of the reset spring mechanism, and the current transformer terminal 1 and the detection device terminal 2 are separated.

[0071] During the separation process of current transformer terminal 1 and detection device terminal 2:

[0072] First, the push rod 16 moves to the left and the insertion end 161 is pulled out from the insertion interface 141, and the conductive part of the conductive key 14 is connected to the conductive part of the wire interface 11.

[0073] Then, the two conductive plugs 21 are separated from the two sockets 12.

[0074] The above design firstly involves setting conductive keys 14. When the conductive keys 14 are in the reset state, the conductive parts on the two conductive keys 14 are simultaneously connected to the conductive sheet 15, thereby enabling the two wire interfaces 11 to be connected. In this way, when the current transformer testing equipment is disassembled and repaired, the two wire interfaces 11 can be connected through the conductive keys 14 to short-circuit the two ends of the secondary winding of the current transformer, so that maintenance can be carried out without power outage, ensuring the continuous operation of the power system.

[0075] Secondly, by setting the push rod 16, when disassembling or installing the current transformer terminal 1 and the detection device terminal 2, during installation, the insertion end 161 is inserted into the connector 141, pushing the conductive key 14 upward, thereby achieving insulation between the conductive part of the conductive key 14 and the conductive part of the wire connector 11; during disassembly, the insertion end 161 is pushed out of the connector 141 by the elastic force of the elastic push-away mechanism, and the conductive key 14 is automatically reset by the elastic reset mechanism. In this way, during the disassembly, assembly, and maintenance of the current transformer detection equipment, the two wire connectors 11 can be automatically connected through the conductive key 14, automatically short-circuiting the two ends of the secondary winding of the current transformer, avoiding the damage to the equipment or the creation of safety hazards caused by worker operation errors that induce extremely high electrodynamics in the secondary winding.

[0076] A first spring is provided on the conductive key 14 as an elastic reset mechanism. One end of the first spring is connected to the conductive key 14, and the other end is connected to the top of the housing 13. The insertion end 161 of the push rod 16 is inserted into the insertion interface 141 of the conductive key 14. The conductive key 14 moves upward into the raised state, the first spring is compressed, and the conductive part of the conductive key 14 remains insulated from the conductive part of the wire interface 11. The insertion end 161 of the push rod 16 is pulled out from below the conductive key 14, the first spring releases the compression force, the conductive key 14 moves downward into the reset state, and the conductive part of the conductive key 14 contacts the conductive part of the wire interface 11 to conduct electricity. The two wire interfaces 11 of the current transformer terminal are short-circuited. By setting the first spring as an elastic reset mechanism, the structure is simple and the cost is reduced. It can also quickly and stably reset the conductive key 14 to contact the conductive part of the wire interface 11 when the insertion end 161 of the push rod 16 is pulled out, preventing unstable contact from causing a high induced electromotive force in the secondary coil.

[0077] A second spring 17 is provided on the push rod 16 as a reset spring mechanism. One end of the second spring 17 is connected to the push rod 16, and the other end is connected to the left side of the housing 13. The second spring 17 is used as a reset spring mechanism to ensure the rapid separation of the current transformer terminal 1 and the detection device terminal 2. Slow separation when opening leads to unstable contact and induced electromotive force.

[0078] The insertion end 161 of the push rod 16 is provided with a slope that lifts up the conductive key 14; another slope is provided below the conductive key 14 as a plug interface 141. The other slope of the conductive key 14 is set opposite to the slope of the insertion end 161 of the push rod 16. By setting the slope and the other slope, it is convenient for the insertion end 161 to be inserted into the plug interface 141, which lifts up the conductive key 14 and keeps it insulated from the conductive part of the wire interface 11.

[0079] The detection device terminal 2 is provided with two conductive pins 23, which are respectively located on the right side of the two conductive plugs 21; the current transformer terminal 1 is provided with two conductive contact pieces 18, which are located in the two wire interfaces 11; the conductive plug 21 is inserted into the socket 12, and the conductive pins 23 make contact with the conductive contact pieces 18 to conduct electricity, so that the current transformer terminal 1 and the detection device terminal 2 are connected; through the conductive contact between the conductive pins 23 and the conductive contact pieces 18, the current transformer terminal 1 and the detection device terminal 2 are electrically connected, which facilitates a stable conductive connection.

[0080] The length of the conductive pin 23 inserted into the conductive contact piece 18 is greater than the length of the insertion end 161 of the push rod 16 extending into the insertion interface 141 below the conductive key 14; this ensures that the conductive key 14 falls down first, and the conductive part on the conductive key 14 contacts and connects with the conductive part of the wire interface 11 first, and then the conductive pin 23 separates from the conductive contact piece 18, ensuring that the secondary circuit of the current transformer will never be open-circuited, and ensuring the safety of the current transformer anti-open-circuit maintenance terminal with the energy storage push-away mechanism during use.

[0081] The conductive contact piece 18 is an elastic conductive contact piece 18. The elastic contraction position of the conductive contact piece 18 is the contact position between the conductive pin 23 and the conductive contact piece 18. The conductive contact piece 18 is elastic, which ensures that the conductive pin 23 has a stable conductive contact connection with the conductive contact piece 18.

[0082] The conductor pin is designed to be cylindrical and conical; this facilitates insertion into the conductive contact piece 18 of the conductor pin and achieves tight contact.

[0083] When in use, if the current transformer needs to have its detection device removed for maintenance or replacement, the locking mechanism 22 unlocks, and the compression force of the second spring 17 pushes out the push rod 16. The push rod 16 pushes out the terminal 2 of the detection device, and the insertion end 161 of the push rod 16 is pulled out of the connector 141. The elastic reset mechanism drives the conductive key 14 to reset. In the reset state, the conductive part of the conductive key 14 contacts the conductive part of the wire connector 11, completing the conduction. The two conductive keys 14 and the conductive sheet 15 remain in contact and conduct electricity. The secondary winding of the current transformer is short-circuited, and then the terminal 1 of the current transformer and the terminal 2 of the detection device are separated. Maintenance can be performed without power outage, ensuring the continuous operation of the power system. The length of the conductive pin 23 inserted into the conductive contact sheet 18 is greater than the length of the insertion end 161 of the push rod 16 extending into the connector 141 below the conductive key 14, ensuring the safety of the current transformer's open-circuit protection maintenance terminal with the energy storage push-away mechanism during use.

[0084] When the detection device is reinstalled in the current transformer, the conductive pin 23 is inserted into the conductive contact piece 18. The detection device is connected to the current transformer. The conductive key 14 and the conductive piece 15 are in short-circuit contact with the conductive part of the wire interface 11. Then, the push rod 16 is pushed and retracted by the terminal 2 of the detection device. At least two insertion ends 161 are inserted into the insertion interface 141, pushing the conductive key 14 upward to achieve insulation between the conductive part of the conductive key 14 and the conductive part of the wire interface 11. The detection device is then reconnected and the conductive key 14 is disconnected to prevent open circuit effects.

[0085] Example 2

[0086] refer to Figure 1 and Figure 2 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0087] The conductive key 14 is provided with a limiting ear, which limits the lowest falling position of the conductive key 14. The limiting ear is located outside the housing 13. The conductive key 14 is also provided with a limiting block, which is located inside the current transformer terminal 1. The limiting block is located at the highest rising position of the conductive key 14. The upper and lower limit positions of the conductive key 14 are limited to prevent the conductive key 14 from falling off or deforming the conductive part of the wire interface 11. This ensures the stability of the current transformer anti-open circuit maintenance terminal with the energy storage push-away mechanism after multiple maintenance.

[0088] A rotating plug is provided above the terminal block 2 of the detection device, and the rotating plug can be rotatably engaged with the terminal block 2 of the detection device; a slot is provided on the housing 13; the rotating plug and the slot serve as a locking mechanism 22; the rotating plug is inserted into the slot and the current transformer terminal 1 is fixedly connected to the terminal block 2 of the detection device; the rotating plug is disengaged from the slot, and the push rod 16 pushes the terminal block 2 of the detection device to separate from the current transformer terminal 1; the rotating plug is inserted into the slot to facilitate quick and stable locking of the terminal block 2 of the detection device and the current transformer terminal 1, and the rotating plug is disengaged from the slot to facilitate separation of the terminal block 2 of the detection device and the current transformer terminal 1. The return spring mechanism on the push rod 16 ensures that the terminal block 2 of the detection device is quickly disengaged.

[0089] In use, when the conductive key 14 slides up and down, the limiting ear and the limiting block prevent the conductive key 14 from falling off or deforming the conductive part of the wire interface 11. The rotating plug is inserted into the slot to facilitate quick and stable locking between the detection device terminal 2 and the solid current transformer terminal 1. The rotating plug is disengaged from the slot to facilitate separation between the detection device terminal 2 and the solid current transformer terminal 1. The reset spring mechanism on the push rod 16 ensures that the detection device terminal 2 is quickly disengaged.

[0090] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A current transformer anti-open-circuit maintenance terminal with a storage and push-away mechanism, comprising a current transformer terminal and a detection device terminal; the current transformer terminal is for connecting the current transformer and has two wire interfaces; a socket is conductively connected to the left side of each wire interface; the detection device terminal has two conductive plugs; the two conductive plugs and the two sockets are connected by a mating plug-in structure; the current transformer terminal and the detection device terminal are detachably connected; the detection device terminal is a terminal that outputs current to the detection device, characterized in that: The current transformer terminal block has a housing, and two wire interfaces are disposed on the housing; Two movable conductive keys are provided on each of the two wire interfaces; An elastic reset mechanism is provided between the conductive key and the housing. The conductive key has a reset state and a raised state; The elastic reset mechanism drives the conductive key to reset. When the conductive key is in the reset state, the conductive part of the conductive key contacts the conductive part of the wire interface to complete the conduction. It also includes a conductive sheet disposed on the housing; At least two conductive bonds share a conductive sheet, and the two conductive bonds maintain contact with the conductive sheet to conduct electricity. When the two conductive keys are in the reset state, the conductive parts on the two conductive keys are simultaneously connected to the conductive sheet, thereby enabling the two wire interfaces to be connected. When the conductive key is in the raised state, the conductive part on the conductive key is disconnected from the conductive part of the wire interface, thereby disconnecting the two wire interfaces. A spring-loaded push-away mechanism is provided on the left side of the current transformer terminal block. The elastic push-off mechanism includes at least two push rods, and each of the at least two push rods is provided with a return spring mechanism; After the current transformer terminals and the detection device terminals are plugged in, at least two push rods are pressed, at least two push rods are retracted, and the reset spring mechanism is in a stored state. A locking mechanism is also provided between the current transformer terminals and the detection device terminals; At least two push rods have insertion ends on their right sides; A connector matching the insertion end is provided between the conductive part of the conductive key and the conductive part of the wire interface. At least two insertion ends are inserted into the connector, pushing the conductive key upward to achieve insulation between the conductive part of the conductive key and the conductive part of the wire connector; After the locking mechanism between the current transformer terminals and the detection device terminals is unlocked, the current transformer terminals and the detection device terminals are separated by the reset thrust of the reset spring mechanism. During the separation of the current transformer terminals and the detection device terminals: First, the push rod moves to the left and the insertion end is pulled out of the socket, and the conductive part of the conductive key is connected to the conductive part of the wire interface; Then, the two conductive plugs are separated from the two sockets.

2. The current transformer anti-open-circuit maintenance terminal with a storage and push-away mechanism according to claim 1, characterized in that: The conductive key is provided with a first spring as an elastic reset mechanism. One end of the first spring is connected to the conductive key, and the other end is connected to the top of the housing. The push rod is inserted into the connector of the conductive key. The conductive key moves upward into the raised state, the first spring is compressed, and the conductive part of the conductive key remains insulated from the conductive part of the wire connector. The insertion end of the push rod is pulled away from below the conductive key, the first spring releases the compressed elastic force, the conductive key moves down into the reset state, the conductive part of the conductive key contacts the conductive part of the wire interface and conducts electricity, and the two wire interfaces of the current transformer terminal are short-circuited.

3. The current transformer anti-open-circuit maintenance terminal with a power storage and push-away mechanism according to claim 1, characterized in that: The push rod is equipped with a second spring as a reset spring mechanism. One end of the second spring is connected to the push rod, and the other end is connected to the left side of the housing.

4. The current transformer anti-open-circuit maintenance terminal with a storage and push-away mechanism according to claim 1, characterized in that: The insertion end of the push rod is provided with an inclined surface that lifts up the conductive key; Below the conductive key, there is another inclined surface serving as an insertion interface, and the other inclined surface of the conductive key is positioned opposite to the inclined surface of the push rod insertion end.

5. The current transformer anti-open-circuit maintenance terminal with a storage and push-away mechanism according to claim 1, characterized in that: The detection device has two conductive pins in its wiring terminals, and the two conductive pins are respectively located on the right side of the two conductive plugs; The current transformer terminal is provided with two conductive contact pieces, and the two conductive contact pieces are disposed in the two wire interfaces; The conductive plug is inserted into the socket, and the conductive pin makes contact with the conductive contact piece to conduct electricity, so that the wiring terminals of the current transformer are connected to the wiring terminals of the detection device.

6. The current transformer anti-open-circuit maintenance terminal with a storage and push-away mechanism according to claim 5, characterized in that: The length of the conductive pin inserted into the conductive contact piece is greater than the length of the push rod insertion end extending into the interface below the conductive key.

7. The current transformer anti-open-circuit maintenance terminal with a storage and push-away mechanism according to claim 5, characterized in that: The conductive contact piece is an elastic conductive contact piece, and the elastic contraction position of the conductive contact piece is the contact position between the conductive pin and the conductive contact piece.

8. The current transformer anti-open-circuit maintenance terminal with a storage and push-away mechanism according to claim 5, characterized in that: The conductive pin is configured as a cylindrical cone shape.

9. The current transformer anti-open-circuit maintenance terminal with a storage and push-away mechanism according to claim 1, characterized in that: The conductive key is provided with a limiting ear, which limits the lowest falling position of the conductive key. The limiting ear is located outside the housing. The conductive key is also provided with a limiting block, which is located inside the current transformer terminal and is positioned at the highest rising position of the conductive key.

10. The current transformer anti-open-circuit maintenance terminal with a storage and push-away mechanism according to claim 1, characterized in that: A rotating plug is provided above the wiring terminals of the detection device, and the rotating plug is rotatably engaged with the wiring terminals of the detection device. The housing is provided with a slot; The locking mechanism is achieved by rotating the insert block and the slot. The rotating plug is inserted into the slot and the current transformer terminal is fixedly connected to the detection device terminal. The rotating insert disengages from the slot, and the push rod pushes the detection device terminal away from the current transformer terminal.

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