A metering protection device for a circuit breaker

Abstract

The application discloses a kind of metering protection devices of circuit breaker, it is related to circuit breaker technical field.A kind of metering protection devices of circuit breaker, including first outer shell mechanism, first outer shell mechanism includes first outer shell, the lower portion of first outer shell mechanism is provided with first wiring mechanism for wiring, the upper portion of first outer shell mechanism is provided with second wiring mechanism for wiring, the upper portion of second wiring mechanism is provided with second outer shell mechanism for controlling the break, the lower wall middle part of first outer shell is fixedly connected with the shell of through-penetration, the lower wall of shell is fixedly connected with the first connecting terminal of through-penetration, the inside of first outer shell is provided with joint assembly group, joint assembly group sequentially includes first joint assembly, second joint assembly and third joint assembly from bottom to top, first joint assembly includes the first copper column of being adapted to insert with shell, the outside of the upper end of first copper column is fixedly sleeved with baffle, a kind of metering protection devices of circuit breaker, improve the protection performance of device to line.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breaker, in particular to a kind of metering protection device of circuit breaker. BACKGROUND

[0002] Circuit breaker refers to the switch device that can be closed, load and open the current under normal loop condition and can be closed, load and open the current under abnormal loop condition within the specified time.Circuit breaker can be used to distribute electric energy, infrequently start asynchronous motor, protect power supply line and motor, etc., when they occur serious overload or short circuit and under-voltage fault, can automatically cut off the circuit, its function is equivalent to the combination of fuse-type switch and over-undervoltage relay, etc.Moreover, after breaking fault current, generally no need to change parts.In the generation, transmission and use of electricity, power distribution is an extremely important link.Power distribution system includes transformer and various high and low voltage electrical equipment.

[0003] Most of the existing circuit breakers are connected in the way of upper and lower connectors single insertion.When the circuit breaker detects that the line has a problem, the upper and lower single insertion connectors are separated by the controller, and then the line is disconnected.However, after the separation of the upper and lower single insertion connectors, an arc will be generated between them, and the arc will still be conducted between the upper and lower connectors.The arc can be effectively extinguished only after the insulation gas is dispersed and filled between the upper and lower connectors.This results in 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 insertion connector method is not very stable, and it takes a certain time to extinguish the arc, so the efficiency of the circuit breaker is not high.Therefore, there is an urgent need for a metering protection device of circuit breaker to solve the above-mentioned problems. SUMMARY

[0004] The purpose of the present application is to provide a metering protection device of circuit breaker to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a metering protection device of circuit breaker, comprising a first outer shell mechanism, the first outer shell mechanism comprising a first outer shell;

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

[0007] A second wiring mechanism for wiring is arranged 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 lug is fixedly connected through the lower wall of the first outer shell, and a first connecting terminal is fixedly connected through the lower wall of the lug;

[0010] The inside of the first outer shell is provided with a joint assembly group, which comprises a first joint assembly, a second joint assembly and a third joint assembly in sequence from bottom to top;

[0011] The first joint assembly comprises a first copper column which is adapted to be inserted into the joint shell, and a spring plate is fixedly sleeved on the outer side of the upper end of the first copper column, and the spring plate is fixedly connected with the joint shell through a first spring which is wound on the outer side of the first copper column;

[0012] The second joint assembly comprises a second copper column, and a square block is sleeved on the outer side of the second copper column, and side plates are fixedly connected on both sides of the square block, and the side plates on both sides are symmetrical, and the side of the square block away from the square block is in a folded state, and clamping grooves are formed in the four corners of the side of the square block;

[0013] The third joint assembly comprises a third copper column, and a sleeve is fixedly sleeved on the outer side of the third copper column, and a panel is fixedly connected on the upper end of the sleeve, and a socket is fixedly connected on the lower end of the sleeve, and limiting holes which are opposite to the clamping grooves are formed in the four corners of the surface of the socket;

[0014] The inside of the first outer shell is provided with two side bag mechanisms for timely supplementing insulating gas, and each side bag mechanism comprises a support assembly for supporting the second joint assembly and an inflation assembly;

[0015] The support assembly comprises a support, the lower end of the support is fixedly connected with the first outer shell, the upper end of the support is bent towards the joint assembly group in a U shape, and a push support which is adapted to the side plate is fixedly connected on the side of the U-shaped bent end of the support towards the joint assembly group.

[0016] As a preferred technical solution of the present application, a through hole which is adapted to be inserted into the sleeve is formed in the middle of the upper wall of the first outer shell;

[0017] The upper ends of the first outer shell are fixedly connected with top blocks on both sides, and the two top blocks are symmetrical, and the opposite sides of the two top blocks are inclined;

[0018] A heater is fixedly surrounded in the middle of the upper inner wall of the first outer shell.

[0019] The first wiring mechanism comprises a wiring sleeve, the upper end of the wiring sleeve is fixedly connected with the first outer shell, the wiring sleeve is sleeved on the outer side of the joint shell, a second connecting terminal is fixedly connected with the middle of the lower wall of the wiring sleeve, a first wire seat is fixedly connected with the lower surface of the wiring sleeve, and one end of the second connecting terminal is connected with the first connecting terminal and the other end is connected with the first wire seat.

[0020] As a preferred technical scheme of the present application, the second wiring mechanism comprises a sleeve block, a lower end of the sleeve block is fixedly connected with the first sleeve shell, a middle part of a surface of the sleeve block is provided with a socket which is adapted to be plugged with the panel, and a middle part of an outer side of the sleeve block is fixedly sleeved with a second wire seat.

[0021] The second sleeve shell mechanism comprises a second sleeve shell, a lower end of the second sleeve shell is fixedly connected with the sleeve block, an inner center of the second sleeve shell is vertically fixedly connected with an inner cylinder, an upper end of the second sleeve shell is fixedly connected with a connecting rod device, a lower end of the connecting rod device is provided with a joystick which is adapted to be plugged with the inner cylinder, a lower end of the joystick is fixedly connected with the panel, an upper surface of the connecting rod device is fixedly connected with a connecting plate, and a middle part of an upper surface of the connecting plate is provided with a controller which is used for controlling the connecting rod device.

[0022] As a preferred technical scheme of the present application, a middle part of opposite two side walls of the square block is provided with a sliding groove;

[0023] A middle upper side of the second copper column is provided with a transverse plate which is plugged, two ends of the transverse plate are respectively adapted to be plugged with the sliding groove, and a lower side of each of the two ends of the transverse plate is fixedly connected with a second spring, and one end of the second spring which is away from the transverse plate is fixedly connected with the sliding groove.

[0024] As a preferred technical scheme of the present application, four vertical frame mechanisms which are used for limiting are arranged in the first sleeve shell, and the joint assembly group is arranged between the four vertical frame mechanisms;

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

[0026] A side of the vertical frame which is close to the joint assembly group is fixedly connected with a limiting frame, and the limiting frame is adapted to be plugged with the clamping groove and the limiting hole.

[0027] As a preferred technical scheme of the present application, two side bag mechanisms are respectively arranged below two top blocks;

[0028] The inflating assembly is arranged on a side of the support assembly which is away from the joint assembly group, the inflating assembly comprises a bag chamber, the bag chamber is fixedly connected between the top block and the support, a side wall of an upper end of the bag chamber which faces the support is movably plugged with a small column, one end of the small column is smoothly penetrated through the support and abuts against an inner side of a U-shaped bending end of the support, the other end of the small column extends into an inner part of the bag chamber and is fixedly connected with a push plate, an inner part of the bag chamber is arranged with a gas bag which is filled with insulating gas, and an inner part of the gas bag which corresponds to a horizontal plane of the push plate is fixedly connected with a third spring;

[0029] The air bag is installed on one side of the support and is connected with a first air pipe, the first air pipe is connected with the inside of the first outer shell, the lower side of the air bag is installed and connected with a second air pipe, the second air pipe is connected with the air bag and the first outer shell.

[0030] The first air pipe and the second air pipe are both installed with a one-way air valve.

[0031] The first outer shell mechanism is symmetrically provided with a cylinder mechanism on both sides, each cylinder mechanism comprises a cylinder, the upper end of the cylinder is fixedly connected with a connecting plate, the lower end of the cylinder is fixedly connected with a third air pipe, and the third air pipe is fixedly connected with the second air pipe.

[0032] Compared with the prior art, the beneficial effects of the present application are:

[0033] (1) A metering protection device of a circuit breaker, when a line fails, a controller controls a connecting rod, and then controls a control rod to retract, so that a joint assembly group is disconnected into three separated individuals, and is disconnected into four contact points, no matter connection or disconnection of the device is carried out through multiple points, misoperation is avoided, use safety of the device is improved, and protection performance of the device on a line is improved.

[0034] (2) A metering protection device of a circuit breaker, under the abutting and mispositioning of a side plate of a second joint assembly and a supporting frame of a support assembly, the supporting frame supports and lifts the second joint assembly, and then the first joint assembly and the second joint assembly are disconnected, the control rod continues to retract, and the second joint assembly and a third joint assembly are disconnected, the device disconnects in multiple points when cutting off a line, so that a current reverse flow path is blocked, damage to an electric appliance is reduced, and protection of the device on the line is improved.

[0035] (3) A metering protection device of a circuit breaker, gas is supplemented in each operation process of the joint assembly group, automation performance of the device is improved, and gas supplement of the device is facilitated.

[0036] (4) A metering protection device of a circuit breaker, when gas in a cylinder of a cylinder mechanism is sufficient, the gas pressure in the first outer shell can be basically guaranteed to be stable, personnel real-time detection and supplement are not needed, and use convenience of the device is improved.

[0037] (5) A metering protection device of a circuit breaker, through existence of a vertical frame mechanism, first, a limiting frame can limit sliding in 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 end of the vertical frame and the side frame just abuts the lower surface of the joint seat, the first copper column, the second copper column and the third copper column are protected, and the service life of the device is improved.

[0038] (6) A metering protection device for a circuit breaker, by the setting of the second joint assembly, the second copper column and the block are in the active sleeve connection state, when the third joint assembly is connected or separated from the line, the relative movement between the second copper column and the block always occurs, by the movement, the second joint assembly can more quickly stir the insulating gas in the first outer shell, so that the insulating gas moves faster, thereby improving the arc extinguishing speed and the working efficiency of the device. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0041] Figure 3 It is a first outer shell mechanism schematic diagram of the application;

[0042] Figure 4 It is a first wiring mechanism schematic diagram of the application;

[0043] Figure 5 It is a second wiring mechanism schematic diagram of the application;

[0044] Figure 6 It is a second outer shell mechanism schematic diagram of the application;

[0045] Figure 7 It is a first outer shell mechanism internal schematic diagram of the application;

[0046] Figure 8 It is a joint assembly group docking schematic diagram of the application;

[0047] Figure 9 It is a joint assembly group separation schematic diagram of the application;

[0048] Figure 10 It is a second joint assembly schematic diagram of the application;

[0049] Figure 11 It is a third joint assembly schematic diagram of the application;

[0050] Figure 12 It is a vertical frame mechanism schematic diagram of the application;

[0051] Figure 13 It is a vertical frame mechanism connection schematic diagram of the application;

[0052] Figure 14 It is a side capsule mechanism position schematic diagram of the application;

[0053] Figure 15 It is a side capsule mechanism schematic diagram of the application;

[0054] Figure 16 Figure is a schematic diagram of the support assembly of the present application;

[0055] Figure 17 Figure is a schematic diagram of the cylinder mechanism of the present application.

[0056] In the figure: 1, first outer shell mechanism; 101, first outer shell; 102, contact 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 sleeve block; 302, jack; 303, second wire seat; 4, second outer shell mechanism; 401, second outer shell; 402, inner cylinder; 403, connecting rod device; 404, operating rod; 405, contact plate; 406, controller; 501, first copper column; 502, elastic plate; 503, first spring; 504, second copper column; 505, square block; 506, sliding groove; 507, cross plate; 508, second spring; 509, side plate; 510, clamping groove; 511, third copper column; 512, sleeve; 513, panel; 514, socket; 515, limiting hole; 6, vertical frame mechanism; 601, vertical frame; 602, side frame; 603, limiting frame; 7, side bag mechanism; 701, support; 702, push 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 technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0058] Embodiment: please refer to Figure 1 , Figure 2 , Figure 3 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 14 , Figure 16 A metering protection device of a circuit breaker, comprising a first outer shell mechanism 1, the first outer shell mechanism 1 comprising a first outer shell 101;

[0059] The first outer shell mechanism 1 is provided below with a first wiring mechanism 2 for wiring;

[0060] The upper part of the first outer shell mechanism 1 is provided with a second wiring mechanism 3 for wiring;

[0061] The upper part of the second wiring mechanism 3 is provided with a second outer shell mechanism 4 for controlling the circuit breaker;

[0062] The lower wall of the first outer shell 101 is provided with a contact shell 102, and the lower wall of the contact shell 102 is provided with a first connecting terminal 103;

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

[0064] The first connector assembly includes a first copper column 501 which is adaptively inserted into the contact shell 102, and the outer side of the upper end of the first copper column 501 is fixedly sleeved with a elastic plate 502, and the elastic plate 502 and the contact shell 102 are fixedly connected with a first spring 503 which is wound outside the first copper column 501;

[0065] The second connector assembly includes a second copper column 504, and the outer side of the second copper column 504 is sleeved with a square block 505, and the two sides of the square block 505 are fixedly connected with side plates 509 respectively, the two side plates 509 are symmetrical, the side of the side plate 509 away from the square block 505 is in a folded state, and the side surface of the square block 505 is provided with a clamping groove 510 at the four corners;

[0066] The third connector assembly includes a third copper column 511, and the outer side of the third copper column 511 is fixedly sleeved with a sleeve 512, and the upper end of the sleeve 512 is fixedly connected with a panel 513, and the lower end of the sleeve 512 is fixedly connected with a connector 514, and the surface of the connector 514 is provided with a limiting hole 515 opposite to the clamping groove 510 at the four corners;

[0067] The inside of the first outer shell 101 is provided with two side capsule mechanisms 7 for timely supplementing insulating gas, and each side capsule mechanism 7 includes a support assembly for supporting the second connector assembly and an inflation assembly;

[0068] The support assembly includes a support 701, and the lower end of the support 701 is fixedly connected with the first outer shell 101, and the upper end of the support 701 is bent towards the connector assembly group in a U shape, and the U-shaped bent end of the support 701 is fixedly connected with a push support 702 which is adapted to the side plate 509 on the side facing the connector assembly group.

[0069] Please refer to Figure 3 、 Figure 4 The upper wall of the first outer shell 101 is provided with a through hole 104 which is adaptively inserted into the sleeve 512;

[0070] The upper end of the interior of the first outer shell 101 is fixedly connected with top blocks 105 respectively, the two top blocks 105 are symmetrical, and the opposite sides of the two top blocks 105 are inclined;

[0071] The middle part of the upper inner wall of the first outer shell 101 is fixedly surrounded with a heater 106.

[0072] The first wiring mechanism 2 comprises a wiring sleeve 201, the upper end of the wiring sleeve 201 is fixedly connected with the first outer shell 101, the wiring sleeve 201 is covered outside the connecting shell 102, the middle part of the lower wall of the wiring sleeve 201 is fixedly connected with a second connecting terminal 202, the lower surface of the wiring sleeve 201 is fixedly connected with a first wire seat 203, one end of the second connecting terminal 202 is connected with the first connecting terminal 103 and the other end is connected with the first wire seat 203.

[0073] Please refer to Figure 2 、 Figure 5 、 Figure 6 , the second wiring mechanism 3 comprises an outer sleeve block 301, the lower end of the outer sleeve block 301 is fixedly connected with the first outer shell 101, the middle part of the surface of the outer sleeve block 301 is fixedly connected with a plug hole 302 which is adapted to be plugged with the panel 513, the size of the plug hole 302 is larger than that of the through hole 104, and the middle part of the outer sleeve block 301 is fixedly connected with a second wire seat 303.

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

[0075] Please refer to Figure 10 , the middle part of the opposite side walls of the block 505 is fixedly connected with a sliding groove 506;

[0076] The middle part of the upper side of the second copper column 504 is fixedly connected with a horizontal plate 507, the two ends of the horizontal plate 507 are respectively plugged into the sliding groove 506, the lower side of the two ends of the horizontal plate 507 is fixedly connected with a second spring 508, the end of the second spring 508 away from the horizontal plate 507 is fixedly connected with the sliding groove 506, and initially, the horizontal plate 507 is located in the upper side of the interior of the sliding groove 506.

[0077] Please refer to Figure 12 、 Figure 13 , four vertical frame mechanisms 6 for limiting are arranged in the interior of 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 comprises a vertical frame 601, the lower end of the vertical frame 601 penetrates and is fixedly connected with the first outer shell 101, the upper end of the vertical frame 601 is fixedly connected with a side frame 602, and the upper ends of the vertical frame 601 and the side frame 602 are flush;

[0079] The vertical frame 601 is fixedly connected with a limiting frame 603 on one side close to the joint assembly group, and the limiting frame 603 is adapted to the insertion slot 510 and the limiting hole 515.

[0080] Please refer to Figure 1 、 Figure 14 、 Figure 15 、 Figure 17 The two side bag mechanisms 7 are respectively arranged below the two top blocks 105.

[0081] The inflating assembly is arranged on the side, away from the joint assembly group, of the support assembly, and the inflating assembly comprises a bag compartment 703, the bag compartment 703 is fixedly connected between the top block 105 and the support 701, a small column 704 is movably inserted into a side wall of the bag compartment 703 and faces the support 701, one end of the small column 704 is smoothly penetrated through the support 701 and abuts against the inner side of the U-shaped bent end of the support 701, the other end of the small column 704 extends into the bag compartment 703 and is fixedly connected with a push plate 705, an air bag 706 filled with internal insulation gas is arranged in the bag compartment 703, and a third spring 707 is fixedly connected to the horizontal plane of the push plate 705 in the air bag 706.

[0082] A first air pipe 708 is installed in communication with the side, close to the support 701, of the air bag 706, the first air pipe 708 is penetrated through the support 701 and is in communication with the inside of the first outer shell 101, and a second air pipe 709 is installed in communication with the lower side of the air bag 706, the second air pipe 709 is penetrated through the bag compartment 703 and the first outer shell 101.

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

[0084] The first outer shell mechanism 1 is symmetrically provided with a cylinder mechanism 8 on both sides, each cylinder mechanism 8 comprises a cylinder 801, the upper end of the cylinder 801 is fixedly connected with the connecting plate 405, and the lower end of the cylinder 801 is fixedly connected in communication with a third air pipe 802, one end of the third air pipe 802 away from the cylinder 801 is fixedly connected in communication with the second air pipe 709.

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

[0086] The first step: the joint assembly group is composed of three joint assemblies. When the controller 406 controls the connecting rod device 403 and then controls the extension of the operating rod 404, the third joint assembly is pressed down, so that the third copper column 511 of the third joint assembly contacts the second copper column 504 of the second joint assembly, and then the second copper column 504 of the second joint assembly contacts the first copper column 501 of the first joint assembly, and then the first joint assembly is adapted to be pressed into the shell 102, so that the first connecting terminal 103 contacts the first copper column 501 of the first joint assembly, thereby connecting the lines, and vice versa. When the line fails, the controller 406 controls the connecting rod device 403 and then controls the contraction of the operating rod 404, so that the joint assembly group is disconnected and becomes three separate individuals, and is disconnected into four contact points. Whether the device is connected or cut off, it is carried out through multiple points to avoid the generation of false touch and false operation, improve the safety of the device, and improve the protection performance of the device for the line.

[0087] The second step: when the line fails, the controller 406 controls the connecting rod device 403 and then controls the contraction of the operating rod 404. The third joint assembly is driven by the operating rod 404 to move upwards. First, the pressure applied to the first spring 503 of the first joint assembly is reduced, so that the first copper column 501 is gradually lifted by the elastic plate 502, so that the insulating gas in the first outer shell 101 fills into the shell 102, and then the electric arc between the first connecting terminal 103 and the first copper column 501 is extinguished, thereby completing the disconnection of the line. At the moment of disconnection, current backflow may occur to damage the nearby electrical appliances. Therefore, after cutting off the first joint assembly and the first connecting terminal 103, the contraction of the operating rod 404 is continued. Under the abutting and mispositioning action of the side plate 509 of the second joint assembly and the support assembly, the support assembly supports and lifts the second joint assembly, thereby completing the disconnection of the first joint assembly and the second joint assembly. Continue to contract the operating rod 404 to complete the disconnection of the second joint assembly and the third joint assembly. The device disconnects the line at multiple points to block the path of current backflow, reduce damage to electrical appliances, and improve the protection of the device for the line.

[0088] The third step: the support assembly of the side capsule mechanism 7 supports the second joint assembly. Therefore, when the joint assembly group is connected or cut off, the support assembly will always be elastic when the second joint assembly moves. Through the extrusion of the U-shaped bending end of the support 701 of the support assembly, the push plate 705 is moved to the air bag 706 by the small column 704, and then the insulating gas in the air bag 706 is introduced into the first outer shell 101 through the first air pipe 708. Therefore, during the operation of the joint assembly group each time, the gas is supplemented, thereby improving the automation performance of the device and facilitating the supplement of the gas of the device.

[0089] Fourth step: through the communication 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 state of fullness, and the additional insulating gas is sent into the first outer shell 101 by the way of pushing the plate 705 to extrude the air bag 706. When the gas inside the first outer shell 101 is in a state of fullness, the insulating gas extruded by the air bag 706 will be less into the first outer shell 101, but cause the air bag 706 to expand at the part which is not extruded in a short time, and when the U-shaped bending end of the support 701 returns, the air bag 706 returns to its original state. In the case that the gas inside the cylinder 801 of the cylinder mechanism 8 is sufficient, the pressure inside the first outer shell 101 can be basically guaranteed to be stable, without the need for real-time detection and supplement by personnel, improving the use convenience of the device.

[0090] Fifth step: through the existence of the vertical frame mechanism 6, the first limiting frame 603 can play a role in limiting sliding 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 connected in place, the upper end of the vertical frame 601 and the side frame 602 just fit the lower surface of the socket 514, playing a role in protecting the first copper column 501, the second copper column 504 and the third copper column 511, improving the service life of the device.

[0091] Sixth step: through the setting of the second joint assembly, the second copper column 504 and the block 505 are in a state of active sleeve connection. When the third joint assembly moves to connect or separate the circuit, relative movement will always occur between the second copper column 504 and the block 505. Through the movement, the second joint assembly can stir the insulating gas inside the first outer shell 101 more quickly, so that the insulating gas moves faster, thereby improving the arc extinguishing speed and improving the working efficiency of the device.

[0092] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application 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 provided below the first outer shell mechanism (1); A second wiring mechanism (3) for wiring is provided above the first outer shell mechanism (1); A second outer shell mechanism (4) for controlling circuit breaking is provided above the second wiring mechanism (3); Its characteristics are: A connecting shell (102) is fixedly connected to the middle portion of the lower wall of the first outer shell (101), and a first connecting terminal (103) is fixedly connected to the lower wall of the connecting shell (102); A joint assembly group is provided 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 includes a second copper column (504), a square 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 square block (505), the side plates (509) on both sides are symmetrical, and the side of the side plate (509) facing away from the square block (505) is in a folded state, and the four corners of the side of the square block (505) are penetrated by slots (510); 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), the upper end of the sleeve (512) is fixedly connected to a panel (513), the lower end of the sleeve (512) is fixedly connected to a socket (514), and the four corners of the surface of the socket (514) are all penetrated by limiting holes (515) that are opposite to the card slot (510); 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 connector 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 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 shifting frame (702) adapted to the side plate (509).

2. The circuit breaker metering protection device according to claim 1, characterized in that: A through hole (104) adapted to be plugged into the sleeve (512) is provided 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. The circuit breaker metering protection device according to claim 2, characterized in that: 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), a socket (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. The circuit breaker metering protection device according to claim 4, characterized in that: 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 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 metering protection device for a circuit breaker according to claim 1, characterized in that: A sliding groove (506) is provided through the middle of the two opposite 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 the end of the second spring (508) away from the horizontal plate (507) is fixedly connected to the slide groove (506).

7. The circuit breaker metering protection device according to claim 1, characterized in that: Four vertical frame mechanisms (6) for limiting position are provided 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) passes through 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 slot (510) and the limiting hole (515).

8. The circuit breaker metering 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), and 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 pass through the bracket (701) and abuts against the inner side of the U-shaped bent end of the bracket (701), and 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); A first air tube (708) is installed on a side of the air bag (706) close to the bracket (701), and the first air tube (708) passes through the bracket (701) and is connected to the interior of the first outer shell (101). A second air tube (709) is installed on the lower side of the air bag (706), and the second air tube (709) passes through the capsule (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. The circuit breaker metering 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 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).

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