Metering protection device of circuit breaker

Abstract

The invention discloses a metering protection device of a circuit breaker, and relates to the technical field of circuit breakers. A metering protection device of a circuit breaker comprises a first outer sleeve shell mechanism, the first outer sleeve shell mechanism comprises a first outer sleeve shell, a first wiring mechanism used for wiring is arranged below the first outer sleeve shell mechanism, and a second wiring mechanism used for wiring is arranged above the first outer sleeve shell mechanism. A second outer sleeve shell mechanism used for controlling circuit breaking is arranged above the second wiring mechanism, a connecting shell is fixedly connected to the middle of the lower wall of the first outer sleeve shell in a penetrating mode, a first connecting terminal is fixedly connected to the lower wall of the connecting shell in a penetrating mode, and a connector assembly set is arranged in the first outer sleeve shell. The connector assembly group sequentially comprises a first connector assembly, a second connector assembly and a third connector assembly from bottom to top, the first connector assembly comprises a first copper column which is in adaptive insertion connection with the connecting shell, and the outer side of the upper end of the first copper column is fixedly sleeved with an elastic plate.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, in particular to a metering protection device for circuit breakers. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect the current under normal circuit conditions and close, carry and disconnect the current under abnormal circuit conditions within a specified time. Circuit breakers can be used to distribute electrical energy, start asynchronous motors infrequently, protect power lines and motors, etc., and automatically cut off the circuit when they are seriously overloaded or short-circuited or undervoltage. Its function is equivalent to the combination of fuse switches and over-underheating relays. Moreover, it is generally not necessary to change parts after breaking the fault current. Power distribution is an extremely important link in the generation, transmission and use of electricity. The power distribution system includes transformers and various high and low voltage electrical equipment.

[0003] Most of the existing circuit breakers are connected by a single plug-in method for upper and lower connectors. When the circuit breaker detects a problem with the line, the controller controls the upper and lower single plug connectors to separate and then disconnect the line. However, an arc will be generated after the upper and lower single plug connectors are separated, and the upper and lower connectors will still be connected through the arc. The arc can only be effectively extinguished after the insulating gas diffuses and fills between the upper and lower connectors. This leads to a time difference between the separation of the upper and lower connectors and the cutting off of the circuit. For emergency situations, the above-mentioned single plug connector method is not very stable, and arc extinguishing also takes a certain amount of time. The efficiency of the circuit breaker is not high. Therefore, a metering protection device for a circuit breaker is urgently needed to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide a metering protection device for a circuit breaker to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a metering protection device for a circuit breaker, comprising a first outer shell mechanism, wherein the first outer shell mechanism comprises a first outer shell;

[0006] A first wiring mechanism for wiring is provided below the first outer shell mechanism;

[0007] A second wiring mechanism for wiring is provided above the first outer shell mechanism;

[0008] A second outer shell mechanism for controlling circuit breaking is arranged above the second wiring mechanism;

[0009] A connecting shell is fixedly connected to the middle part of the lower wall of the first outer shell, and a first connecting terminal is fixedly connected to the lower wall of the connecting shell;

[0010] A joint assembly group is disposed inside the first outer shell, and the joint assembly group includes a first joint assembly, a second joint assembly and a third joint assembly from bottom to top;

[0011] The first connector assembly includes a first copper column adapted to be plugged with the connection shell, a spring plate is fixedly sleeved on the outer side of the upper end of the first copper column, and a first spring wound around the outer side of the first copper column is fixedly connected between the spring plate and the connection shell;

[0012] The second connector assembly includes a second copper column, a square block is sleeved on the outer side of the second copper column, side plates are fixedly connected to the two sides of the square block, the side plates on both sides are symmetrical, the side of the side plate facing away from the square block is in a folded state, and the four corners of the side of the square block are penetrated by slots;

[0013] The third connector assembly includes a third copper column, a sleeve is fixedly sleeved on the outer side of the third copper column, a panel is fixedly connected to the upper end of the sleeve, a socket is fixedly connected to the lower end of the sleeve, and limiting holes facing the card slot are penetrated at the four corners of the surface of the socket;

[0014] Two side bag mechanisms for timely replenishing insulating gas are symmetrically arranged inside the first outer shell, and each of the side bag mechanisms includes a bracket assembly and an inflation assembly for supporting the second joint assembly;

[0015] The bracket assembly includes a bracket, the lower end of which passes through and is fixedly connected to the first outer shell, the upper end of which is bent toward the joint assembly group to form a U shape, and the U-shaped bent end of the bracket is fixedly connected to a lever frame adapted to the side plate toward the side of the joint assembly group.

[0016] As a preferred technical solution of the present invention, a through hole adapted to be plugged with the sleeve is provided through the middle of the upper wall of the first outer shell;

[0017] Top blocks are fixedly connected to both sides of the inner upper end of the first outer shell, the two top blocks are symmetrical, and the opposite sides of the two top blocks are inclined;

[0018] A heater is fixedly connected to the middle portion of the upper inner wall of the first outer shell.

[0019] The first wiring mechanism includes a wiring sleeve, the upper end of the wiring sleeve is fixedly connected to the first outer shell, the wiring sleeve cover is connected to the outside of the shell, a second connecting terminal is fixedly connected through the middle of the lower wall of the wiring sleeve, the lower surface of the wiring sleeve is fixedly connected to the first wire seat, one end of the second connecting terminal is connected to the first connecting terminal and the other end is connected to the first wire seat.

[0020] As a preferred technical solution of the present invention, the second wiring mechanism includes a jacket block, the lower end of the jacket block is fixedly connected to the first jacket shell, a socket for mating with the panel is penetrated through the middle of the surface of the jacket block, and a second wire seat is fixedly sleeved on the outer side of the middle of the jacket block.

[0021] The second outer shell mechanism includes a second outer shell, the lower end of which is fixedly connected to an outer shell block, an inner cylinder is vertically fixedly connected to the inner center of the second outer shell, a connecting rod is fixedly connected to the upper end of the second outer shell, a joystick that is adapted to be plugged into the inner cylinder is installed at the lower end of the connecting rod, the lower end of the joystick is fixedly connected to a panel, the upper surface of the connecting rod is fixedly connected to a connecting plate, and a controller for controlling the connecting rod is installed in the middle of the upper surface of the connecting plate.

[0022] As a preferred technical solution of the present invention, a sliding groove is provided through the middle of the two opposite side walls of the block;

[0023] A horizontal plate is inserted through the middle upper side of the second copper column, and the two ends of the horizontal plate correspond to the plug-in slide grooves respectively. The lower sides of the two ends of the horizontal plate are fixedly connected with second springs, and the end of the second spring away from the horizontal plate is fixedly connected to the slide groove.

[0024] As a preferred technical solution of the present invention, four vertical frame mechanisms for limiting position are arranged inside the first outer shell, and the joint assembly group is located between the four vertical frame mechanisms;

[0025] Each of the vertical frame mechanisms comprises a vertical frame, the lower end of the vertical frame penetrates and is fixedly connected to the first outer shell, the upper end side of the vertical frame is fixedly connected to a side frame, and the upper ends of the vertical frame and the side frame are flush;

[0026] The side of the vertical frame close to the joint assembly group is fixedly connected to a limiting frame, and the limiting frame is adapted to the plug-in card slot and the limiting hole.

[0027] As a preferred technical solution of the present invention, the two side bag mechanisms are respectively located below the two top blocks;

[0028] The inflatable component is located on the side of the bracket component away from the joint component group, and the inflatable component includes a bag compartment, which is fixedly connected between the top block and the bracket, and a small column is movably inserted into the upper end of the bag compartment and toward a side wall of the bracket, one end of the small column is smoothly corresponding to the bracket and abuts against the inner side of the U-shaped bent end of the bracket, and the other end of the small column extends into the bag compartment and is fixedly connected with a push plate, an airbag filled with insulating gas is placed inside the bag compartment, and a third spring is fixedly connected to the horizontal surface of the inside of the airbag corresponding to the push plate;

[0029] A first air tube is installed and connected to the side of the airbag close to the bracket, and the first air tube passes through the bracket and is connected to the inside of the first outer shell. A second air tube is installed and connected to the lower side of the airbag, and the second air tube passes through the airbag compartment and the first outer shell.

[0030] One-way air valves are installed inside the first air pipe and the second air pipe.

[0031] Cylinder mechanisms are symmetrically arranged on both sides of the first outer shell mechanism, each of the cylinder mechanisms includes a cylinder, the upper end of the cylinder is fixedly connected to a connecting plate, the lower end of the cylinder is fixedly connected to a third air pipe, and the end of the third air pipe away from the cylinder is fixedly connected to the second air pipe.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) A metering protection device for a circuit breaker. When a line fails, a controller controls a connecting rod and then controls a lever to retract, so that a connector assembly is disconnected and becomes three separate individuals, and the disconnection is made into four contact points. Whether the device is connected or disconnected, it is done through multiple points, thereby avoiding false touches and misoperations, improving the safety of the device, and improving the protection performance of the device for the line.

[0034] (2) A metering protection device for a circuit breaker, under the abutment and misalignment effect of the side plate of the second connector assembly and the lever of the bracket assembly, the lever supports and lifts the second connector assembly, thereby completing the disconnection of the first connector assembly and the second connector assembly, and continuing to retract the operating lever to complete the disconnection of the second connector assembly and the third connector assembly. When cutting off the line, the device performs multi-point disconnection, thereby blocking the path for current backflow, reducing damage to electrical appliances, and improving the protection of the device to the line.

[0035] (3) A metering protection device for a circuit breaker replenishes gas during each operation of a joint assembly group, thereby improving the automation performance of the device and facilitating gas replenishment by the device.

[0036] (4) A metering protection device for a circuit breaker can basically ensure the stability of the air pressure inside the first outer shell when there is sufficient gas inside the cylinder of the cylinder mechanism, without the need for real-time detection and replenishment by personnel, thereby improving the convenience of use of the device.

[0037] (5) A metering protection device for a circuit breaker, wherein the vertical frame mechanism has a limit frame that can limit slip during the movement of the second joint assembly and the third joint assembly, and when the first joint assembly, the second joint assembly and the third joint assembly are all connected in place, the upper ends of the vertical frame and the side frame just fit the lower surface of the socket, thereby protecting the first copper column, the second copper column and the third copper column, and improving the service life of the device.

[0038] (6) A metering protection device for a circuit breaker, wherein the second copper column and the block are in a state of movable socketing through the setting of the second joint component. When the line is connected or separated by moving the third joint component, there is always relative movement between the second copper column and the block. The movement enables the second joint component to stir the insulating gas inside the first outer shell more quickly, so that the insulating gas moves faster, thereby increasing the speed of arc extinguishing and improving the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the present invention;

[0040] Figure 2 It is a schematic diagram of the main body of the present invention;

[0041] Figure 3 This is a schematic diagram of the first outer shell mechanism of the present invention;

[0042] Figure 4 is a schematic diagram of a first wiring mechanism of the present invention;

[0043] Figure 5 is a schematic diagram of a second wiring mechanism of the present invention;

[0044] Figure 6 This is a schematic diagram of the second outer shell mechanism of the present invention;

[0045] Figure 7 This is a schematic diagram of the interior of the first outer shell mechanism of the present invention;

[0046] Figure 8 This is a schematic diagram of the joint assembly group of the present invention;

[0047] Fig. 9 This is a schematic diagram of the separation of the connector assembly of the present invention;

[0048] Fig.10 is a schematic diagram of a second joint assembly of the present invention;

[0049] Fig.11 is a schematic diagram of a third joint assembly of the present invention;

[0050] Fig.12 It is a schematic diagram of the erection frame mechanism of the present invention;

[0051] Fig.13 It is a schematic diagram of the connection of the erection frame mechanism of the present invention;

[0052] Fig.14 It is a schematic diagram of the position of the side bag mechanism of the present invention;

[0053] Fig.15 It is a schematic diagram of the side bag mechanism of the present invention;

[0054] Fig.16 It is a schematic diagram of the position of the bracket assembly of the present invention;

[0055] Fig.17 It is a schematic diagram of the cylinder mechanism of the present invention.

[0056] In the figure: 1, first outer shell mechanism; 101, first outer shell; 102, connecting shell; 103, first connecting terminal; 104, through hole; 105, top block; 106, heater; 2, first wiring mechanism; 201, wiring sleeve; 202, second connecting terminal; 203, first wire seat; 3, second wiring mechanism; 301, outer shell block; 302, jack; 303, second wire seat; 4, second outer shell mechanism; 401, second outer shell; 402, inner cylinder; 403, connecting rod; 404, joystick; 405, connecting plate; 406, controller; 501, first copper column; 502, spring plate; 503, first spring; 5 04, second copper pillar; 505, block; 506, slide groove; 507, horizontal plate; 508, second spring; 509, side plate; 510, slot; 511, third copper pillar; 512, sleeve; 513, panel; 514, socket; 515, limit hole; 6, vertical frame mechanism; 601, vertical frame; 602, side frame; 603, limit frame; 7, side bag mechanism; 701, bracket; 702, pull frame; 703, bag compartment; 704, small column; 705, push plate; 706, air bag; 707, third spring; 708, first air pipe; 709, second air pipe; 8, cylinder mechanism; 801, cylinder; 802, third air pipe. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] Example: See Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.14 , Fig.16 , a metering protection device for a circuit breaker, comprising a first outer shell mechanism 1, the first outer shell mechanism 1 comprising a first outer shell 101;

[0059] A first wiring mechanism 2 for wiring is provided below the first outer shell mechanism 1;

[0060] A second wiring mechanism 3 for wiring is arranged above the first outer shell mechanism 1;

[0061] A second outer shell mechanism 4 for controlling circuit breaking is arranged above the second wiring mechanism 3;

[0062] A connection shell 102 is fixedly connected to the middle of the lower wall of the first outer shell 101, and a first connection terminal 103 is fixedly connected to the lower wall of the connection shell 102;

[0063] The first outer shell 101 is provided with a joint assembly group inside, and the joint assembly group includes a first joint assembly, a second joint assembly and a third joint assembly from bottom to top;

[0064] The first connector assembly includes a first copper column 501 adapted to be plugged with the connection shell 102, a spring plate 502 is fixedly sleeved on the outer side of the upper end of the first copper column 501, and a first spring 503 wrapped around the outer side of the first copper column 501 is fixedly connected between the spring plate 502 and the connection shell 102;

[0065] The second connector assembly includes a second copper column 504, a block 505 is sleeved on the outer side of the second copper column 504, and side plates 509 are fixedly connected to both sides of the block 505. The side plates 509 on both sides are symmetrical, and the side of the side plate 509 facing away from the block 505 is in a folded state. The four corners of the side of the block 505 are penetrated by a card slot 510.

[0066] The third connector assembly includes a third copper column 511, a sleeve 512 is fixedly sleeved on the outer side of the third copper column 511, a panel 513 is fixedly connected to the upper end of the sleeve 512, a socket 514 is fixedly connected to the lower end of the sleeve 512, and limiting holes 515 facing the card slot 510 are penetrated and opened at the four corners of the surface of the socket 514;

[0067] Two side bag mechanisms 7 for timely replenishing insulating gas are symmetrically arranged inside the first outer shell 101, and each side bag mechanism 7 includes a bracket assembly and an inflation assembly for supporting the second joint assembly;

[0068] The bracket assembly includes a bracket 701, the lower end of the bracket 701 passes through and is fixedly connected to the first outer shell 101, the upper end of the bracket 701 is bent into a U shape toward the joint assembly group, and the U-shaped bent end of the bracket 701 is fixedly connected to a side of the joint assembly group with a lever frame 702 adapted to the side panel 509.

[0069] See also Figure 3 , Figure 4 A through hole 104 is formed in the middle of the upper wall of the first outer shell 101 and is adapted to be plugged into the sleeve 512;

[0070] Top blocks 105 are fixedly connected to both sides of the inner upper end of the first outer shell 101, and the two top blocks 105 are symmetrical, and the opposite sides of the two top blocks 105 are inclined;

[0071] A heater 106 is fixedly connected to the middle portion of the upper inner wall of the first outer shell 101 .

[0072] The first wiring mechanism 2 includes a wiring sleeve 201, the upper end of the wiring sleeve 201 is fixedly connected to the first outer shell 101, the wiring sleeve 201 is covered and connected to the outside of the connection shell 102, a second connection terminal 202 is fixedly connected through the middle of the lower wall of the wiring sleeve 201, and a first wire holder 203 is fixedly connected to the lower surface of the wiring sleeve 201, one end of the second connection terminal 202 is connected to the first connection terminal 103 and the other end is connected to the first wire holder 203.

[0073] See also Figure 2 , Figure 5 , Figure 6 The second wiring mechanism 3 includes a jacket block 301, the lower end of the jacket block 301 is fixedly connected to the first jacket shell 101, and a socket 302 adapted to be plugged into the panel 513 is provided through the middle of the surface of the jacket block 301. The specification of the socket 302 is larger than that of the through hole 104, and a second wire seat 303 is fixedly sleeved on the outer side of the middle part of the jacket block 301.

[0074] The second outer shell mechanism 4 includes a second outer shell 401, the lower end of the second outer shell 401 is fixedly connected to the outer shell block 301, the inner center of the second outer shell 401 is vertically fixedly connected to the inner cylinder 402, the upper end of the second outer shell 401 is fixedly connected to a connecting rod 403, the lower end of the connecting rod 403 is equipped with a joystick 404 that is adapted to be plugged into the inner cylinder 402, the lower end of the joystick 404 is fixedly connected to the panel 513, the upper surface of the connecting rod 403 is fixedly connected to a connecting plate 405, and the middle part of the upper surface of the connecting plate 405 is equipped with a controller 406 for controlling the connecting rod 403.

[0075] See also Fig.10 , a slide groove 506 is provided through the middle of the two opposite side walls of the block 505;

[0076] A horizontal plate 507 is inserted through the upper middle side of the second copper column 504, and the two ends of the horizontal plate 507 correspond to the plug-in slide groove 506 respectively. The lower sides of the two ends of the horizontal plate 507 are fixedly connected with second springs 508, and one end of the second spring 508 away from the horizontal plate 507 is fixedly connected to the slide groove 506. Initially, the horizontal plate 507 is on the upper inner side of the slide groove 506.

[0077] See also Fig.12 , Fig.13 , four vertical frame mechanisms 6 for limiting position are arranged inside the first outer shell 101, and the joint assembly group is located between the four vertical frame mechanisms 6;

[0078] Each vertical frame mechanism 6 includes a vertical frame 601, the lower end of the vertical frame 601 penetrates and is fixedly connected to the first outer shell 101, and the upper end side of the vertical frame 601 is fixedly connected to the side frame 602, and the upper ends of the vertical frame 601 and the side frame 602 are flush;

[0079] A side of the vertical frame 601 close to the joint assembly group is fixedly connected to a limiting frame 603 , and the limiting frame 603 is adapted to fit the plug-in card slot 510 and the limiting hole 515 .

[0080] See also Figure 1 , Fig.14 , Fig.15 , Fig.17 , the two side bag mechanisms 7 are respectively located below the two top blocks 105;

[0081] The inflatable component is located on the side of the bracket component away from the joint component group, and the inflatable component includes a capsule 703, which is fixedly connected between the top block 105 and the bracket 701. A small column 704 is movably inserted at the upper end of the capsule 703 and toward the side wall of the bracket 701. One end of the small column 704 is smoothly connected to the bracket 701 and contacts the inner side of the U-shaped bent end of the bracket 701. The other end of the small column 704 extends into the capsule 703 and is fixedly connected to a push plate 705. An air bag 706 filled with insulating gas is placed inside the capsule 703, and a third spring 707 is fixedly connected to the horizontal surface of the air bag 706 corresponding to the push plate 705.

[0082] A first air tube 708 is installed and connected to one side of the airbag 706 close to the bracket 701. The first air tube 708 passes through the bracket 701 and is connected to the inside of the first outer shell 101. A second air tube 709 is installed and connected to the lower side of the airbag 706. The second air tube 709 passes through the capsule compartment 703 and the first outer shell 101.

[0083] One-way air valves are installed inside the first air tube 708 and the second air tube 709. The first air tube 708 can only ventilate from the airbag 706 to the inside of the first outer shell 101, and the second air tube 709 can only ventilate from the outside of the first outer shell 101 to the inside of the airbag 706.

[0084] Cylinder mechanisms 8 are symmetrically arranged on both sides of the first outer shell mechanism 1, and each cylinder mechanism 8 includes a cylinder 801. The upper end of the cylinder 801 is fixedly connected to the connecting plate 405, and the lower end of the cylinder 801 is fixedly connected to the third air pipe 802. The end of the third air pipe 802 away from the cylinder 801 is fixedly connected to the second air pipe 709.

[0085] The working principle of the present invention is as follows:

[0086] Step 1: The connector assembly group consists of three connector assemblies. When the controller 406 controls the connecting rod 403 and then controls the joystick 404 to extend, by pressing down the third connector assembly, the third copper column 511 of the third connector assembly contacts the second copper column 504 of the second connector assembly, and then the second copper column 504 of the second connector assembly contacts the first copper column 501 of the first connector assembly. Then the first connector assembly is adapted and pressed into the terminal shell 102, so that the first connecting terminal 103 contacts the first copper column 501 of the first connector assembly, thereby connecting the lines. Conversely, when a line fails, the controller 406 controls the connecting rod 403 and then controls the joystick 404 to contract, so that the connector assembly group is disconnected into three separate individuals, and disconnected into four contact points. Whether the device is connected or disconnected, it is performed through multiple points to avoid accidental touch and misoperation, improve the safety of the device, and improve the protection performance of the device for the line.

[0087] Step 2: After a problem occurs in the line, the controller 406 controls the connecting rod 403 and then controls the joystick 404 to contract, and the third joint assembly moves upward under the drive of the joystick 404. First, the pressure applied to the first spring 503 of the first joint assembly decreases, so that the first copper column 501 is gradually propped up through the spring plate 502, so that the insulating gas inside the first outer shell 101 is filled into the connecting shell 102, and then the arc between the first connecting terminal 103 and the first copper column 501 is extinguished, and the line is disconnected immediately. At the moment of disconnection, current backflow may occur to nearby electrical appliances. In order to avoid damage, the joystick 404 is controlled to retract after the first connector assembly and the first connecting terminal 103 are cut off. Under the abutment and misalignment of the side plate 509 of the second connector assembly and the lever frame 702 of the bracket assembly, the lever frame 702 supports and lifts the second connector assembly, thereby completing the disconnection of the first connector assembly and the second connector assembly. The joystick 404 is continued to be retracted to complete the disconnection of the second connector assembly and the third connector assembly. The device performs multi-point disconnection when cutting off the line, thereby blocking the path for current backflow, reducing damage to electrical appliances, and improving the protection of the device to the line.

[0088] Step 3: The bracket assembly of the side bag mechanism 7 supports the second joint assembly, so when the joint assembly group connects or cuts off the line, the bracket assembly will always bounce when the second joint assembly moves, and the U-shaped bent end of the bracket 701 of the bracket assembly is squeezed, and the push plate 705 is moved toward the airbag 706 through the small column 704, and then the insulating gas inside the airbag 706 is introduced into the first outer shell 101 through the first air pipe 708. Therefore, during each operation of the joint assembly group, gas will be replenished, which improves the automation performance of the device and facilitates the device to replenish gas.

[0089] Step 4: Through the connection between the cylinder mechanism 8, the side bag mechanism 7 and the first outer shell mechanism 1, the gas inside the first outer shell 101 can be kept in a filled state, and the additional insulating gas can be sent into the first outer shell 101 by squeezing the airbag 706 through the push plate 705. When the gas inside the first outer shell 101 is in a filled state, the insulating gas squeezed by the airbag 706 will enter the first outer shell 101 less, but will cause the airbag 706 to expand in the unsqueezed part for a short time, and when the U-shaped bent end of the bracket 701 returns to its original state, the airbag 706 returns to its original state. When there is enough gas inside the cylinder 801 of the cylinder mechanism 8, the air pressure inside the first outer shell 101 can be basically guaranteed to be stable, without the need for personnel to detect and replenish in real time, thereby improving the convenience of use of the device.

[0090] Step 5: Through the existence of the vertical frame mechanism 6, first, the limit frame 603 can play a role in limiting slip during the movement of the second joint assembly and the third joint assembly, and when the first joint assembly, the second joint assembly and the third joint assembly are all connected in place, the upper ends of the vertical frame 601 and the side frame 602 just fit the lower surface of the socket 514, which protects the first copper column 501, the second copper column 504 and the third copper column 511, thereby increasing the service life of the device.

[0091] Step 6: Through the setting of the second connector assembly, the second copper column 504 and the block 505 are in a state of active socketing. When the lines are connected or separated by moving the third connector assembly, there will always be relative movement between the second copper column 504 and the block 505. The movement enables the second connector assembly to stir the insulating gas inside the first outer shell 101 more quickly, so that the insulating gas moves faster, thereby increasing the speed of arc extinguishing and improving the working efficiency of the device.

[0092] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metering protection device for a circuit breaker, comprising a first outer shell mechanism (1), wherein the first outer shell mechanism (1) comprises a first outer shell (101); A first wiring mechanism (2) for wiring is arranged below the first outer shell mechanism (1); A second wiring mechanism (3) for wiring is arranged above the first outer shell mechanism (1); A second outer shell mechanism (4) for controlling circuit breaking is arranged above the second wiring mechanism (3); Features: A connection shell (102) is penetrated and fixedly connected to the middle part of the lower wall of the first outer shell (101), and a first connection terminal (103) is penetrated and fixedly connected to the lower wall of the connection shell (102); A joint assembly group is arranged inside the first outer shell (101), and the joint assembly group includes a first joint assembly, a second joint assembly and a third joint assembly in order from bottom to top; The first connector assembly comprises a first copper column (501) adapted to be plugged into the connection shell (102); a spring plate (502) is fixedly sleeved on the outer side of the upper end of the first copper column (501); and a first spring (503) wound around the outer side of the first copper column (501) is fixedly connected between the spring plate (502) and the connection shell (102); The second connector assembly comprises a second copper column (504), a block (505) is sleeved on the outer side of the second copper column (504), side plates (509) are fixedly connected to the two sides of the block (505), the side plates (509) on both sides are symmetrical, and the side of the side plate (509) facing away from the block (505) is in a folded state, and the four corners of the side of the block (505) are penetrated by slots (510); The third connector assembly comprises a third copper column (511), a sleeve (512) is fixedly sleeved on the outer side of the third copper column (511), a panel (513) is fixedly connected to the upper end of the sleeve (512), a socket (514) is fixedly connected to the lower end of the sleeve (512), and limiting holes (515) facing the card slot (510) are penetrated at the four corners of the surface of the socket (514); Two side bag mechanisms (7) for timely replenishing insulating gas are symmetrically arranged inside the first outer shell (101), and each of the side bag mechanisms (7) includes a bracket assembly and an inflation assembly for supporting the second joint assembly; The bracket assembly includes a bracket (701), the lower end of the bracket (701) passes through and is fixedly connected to the first outer shell (101), the upper end of the bracket (701) is bent toward the joint assembly group to form a U shape, and the U-shaped bent end of the bracket (701) is fixedly connected to a side of the joint assembly group with a shifting frame (702) adapted to the side plate (509).

2. A circuit breaker metering protection device according to claim 1, characterized in that: A through hole (104) adapted to be plugged with the sleeve (512) is formed through the middle of the upper wall of the first outer shell (101); Top blocks (105) are fixedly connected to both sides of the inner upper end of the first outer shell (101), the two top blocks (105) are symmetrical, and the opposite sides of the two top blocks (105) are inclined; A heater (106) is fixedly connected to the middle portion of the upper inner wall of the first outer shell (101).

3. The circuit breaker metering protection device according to claim 1, characterized in that: The first wiring mechanism (2) comprises a wiring sleeve (201), the upper end of the wiring sleeve (201) is fixedly connected to the first outer shell (101), the wiring sleeve (201) is covered and connected to the outside of the connection shell (102), a second connection terminal (202) is fixedly connected through the middle of the lower wall of the wiring sleeve (201), the lower surface of the wiring sleeve (201) is fixedly connected to the first wire seat (203), one end of the second connection terminal (202) is connected to the first connection terminal (103) and the other end is connected to the first wire seat (203).

4. A circuit breaker measuring protection device according to claim 2, characterized in that: The second wiring mechanism (3) comprises a jacket block (301), the lower end of the jacket block (301) is fixedly connected to the first jacket shell (101), a plug hole (302) adapted to be plugged into the panel (513) is provided through the middle of the surface of the jacket block (301), and a second wire holder (303) is fixedly sleeved on the outer side of the middle of the jacket block (301).

5. A circuit breaker measuring protection device according to claim 4, characterized in that: The second outer shell mechanism (4) comprises a second outer shell (401), the lower end of the second outer shell (401) is fixedly connected to the outer shell block (301), the inner center of the second outer shell (401) is vertically fixedly connected to the inner cylinder (402), the upper end of the second outer shell (401) is fixedly connected to a connecting rod (403), the lower end of the connecting rod (403) is equipped with an operating rod (404) adapted to be plugged into the inner cylinder (402), the lower end of the operating rod (404) is fixedly connected to a panel (513), the upper surface of the connecting rod (403) is fixedly connected to a connecting plate (405), and the middle part of the upper surface of the connecting plate (405) is equipped with a controller (406) for controlling the connecting rod (403).

6. The circuit breaker measuring protection device according to claim 1, characterized in that: A sliding groove (506) is provided through the middle of two opposite side walls of the block (505); A horizontal plate (507) is inserted through the upper middle side of the second copper column (504), and the two ends of the horizontal plate (507) correspond to the plug-in slide grooves (506) respectively. The lower sides of the two ends of the horizontal plate (507) are fixedly connected with second springs (508), and one end of the second spring (508) away from the horizontal plate (507) is fixedly connected to the slide groove (506).

7. A circuit breaker metering protection device according to claim 1, characterized in that: Four vertical frame mechanisms (6) for limiting position are arranged inside the first outer shell (101), and the joint assembly group is located between the four vertical frame mechanisms (6); Each of the vertical frame mechanisms (6) comprises a vertical frame (601), the lower end of the vertical frame (601) penetrates and is fixedly connected to the first outer shell (101), the upper end of the vertical frame (601) is fixedly connected to a side frame (602), and the upper ends of the vertical frame (601) and the side frame (602) are flush; The vertical frame (601) is fixedly connected to a limiting frame (603) on one side close to the joint assembly group, and the limiting frame (603) is adapted to fit the plug-in card slot (510) and the limiting hole (515).

8. The circuit breaker measuring protection device according to claim 5, characterized in that: The two side bag mechanisms (7) are respectively located below the two top blocks (105); The inflatable component is located on the side of the bracket component away from the joint component group, and the inflatable component includes a capsule (703), the capsule (703) is fixedly connected between the top block (105) and the bracket (701), a small column (704) is movably inserted at the upper end of the capsule (703) and facing the side wall of the bracket (701), one end of the small column (704) is smoothly corresponding to the bracket (701) and abuts against the inner side of the U-shaped bent end of the bracket (701), the other end of the small column (704) extends into the capsule (703) and is fixedly connected to a push plate (705), an air bag (706) filled with insulating gas is placed inside the capsule (703), and a third spring (707) is fixedly connected to the inside of the air bag (706) on the horizontal surface corresponding to the push plate (705); A first air tube (708) is installed and connected to a side of the airbag (706) close to the bracket (701), and the first air tube (708) passes through the bracket (701) and is connected to the inside of the first outer shell (101). A second air tube (709) is installed and connected to the lower side of the airbag (706), and the second air tube (709) passes through the capsule compartment (703) and the first outer shell (101). One-way air valves are installed inside the first air pipe (708) and the second air pipe (709).

9. A circuit breaker measuring protection device according to claim 8, characterized in that: Cylinder mechanisms (8) are symmetrically arranged on both sides of the first outer shell mechanism (1), and each of the cylinder mechanisms (8) comprises a cylinder (801). The upper end of the cylinder (801) is fixedly connected to the connecting plate (405), and the lower end of the cylinder (801) is fixedly connected to a third air pipe (802). The end of the third air pipe (802) away from the cylinder (801) is fixedly connected to the second air pipe (709).

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