CN115631979B

CN115631979B - Bidirectional current hybrid direct current breaker

Info

Publication number: CN115631979B
Application number: CN202211361490.9A
Authority: CN
Inventors: 饶磊; 李少翀; 杨文�; 李佳伟
Original assignee: Dc Co Of State Grid Hubei Electric Power Co ltd
Current assignee: Dc Co Of State Grid Hubei Electric Power Co ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-05-26
Anticipated expiration: 2042-11-02
Also published as: CN115631979A

Abstract

The invention discloses a bidirectional current mixing type direct current breaker which comprises a shell, wherein a groove is formed in the inner bottom of the shell, a guide rod is fixedly connected between the inner walls of the two ends of the groove, an electromagnetic block is arranged in the inner bottom of the shell, a first upright post and a second upright post which are positioned on one side of the groove are arranged at the inner top of the shell, and an automatic breaking mechanism connected with the guide rod is arranged in the shell. According to the invention, when the circuit current is short-circuited or abnormal conditions occur, the circuit is automatically broken, the servo motor is started to blow and radiate the conducting strip, the degree of automation is higher, the use is more convenient, cold air can be sprayed to the conducting strip automatically to radiate and cool, the radiating effect of the conducting strip is further improved, meanwhile, nearby staff is reminded of timely overhauling by sounding in the radiating process, and when the circuit is recovered to be normal, the circuit can be automatically connected, the servo motor and the refrigerator are closed, the resources are saved, and the structure is more compact.

Description

Bidirectional current hybrid direct current breaker

Technical Field

The invention relates to the technical field of direct current circuit breakers, in particular to a bidirectional current hybrid direct current circuit breaker.

Background

The hybrid direct current circuit breaker is a circuit breaker which can cut off fault current rapidly and ensure the arc-free breaking of a mechanical switch of the circuit breaker. The current path can be maintained, the power supply operation of the system is not affected immediately, and the maintenance difficulty is reduced.

In the use, the circuit breaker detects the electric current anomaly in the circuit, can trigger the circuit breaking protection, cut off fault current, avoid causing the burn out of circuit because the short circuit, moreover when the circuit breaker detects the electric current anomaly, can produce huge heat on the conducting strip, need dispel the heat and cool down in order to influence subsequent normal use, among the prior art, be difficult to in the circuit take place unusual after, automatic heat dissipation cooling to the conducting strip, and heat dissipation cooling mode is single, heat dissipation cooling efficiency has been influenced, use inconvenience, the circuit is not convenient for close the actuating source in the heat dissipation cooling mechanism after restoring to normal yet, the wasting of resources is serious, still unable timely warning staff in time overhauls simultaneously, degree of automation is low, structural connection is not compact.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a bidirectional current hybrid direct current breaker.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a two-way electric current hybrid direct current circuit breaker, includes the casing, the recess has been seted up to the interior bottom of casing, fixedly connected with guide bar between the both ends inner wall of recess, the interior bottom of casing is provided with the electromagnetism piece, the interior top of casing is provided with first stand and the second stand that is located recess one side, be provided with the automatic shutdown mechanism that is connected with the guide bar in the casing, it is connected with first pivot to rotate on the one side inner wall of casing, the recess is located between first pivot and the electromagnetism piece, fixed mounting has servo motor on the one side outer wall of casing, be provided with the first heat dissipation mechanism who is connected with first pivot in the casing, fixedly connected with slide bar between the both sides inner wall of casing, be provided with the second heat dissipation mechanism who is connected with the slide bar in the casing.

Preferably, the automatic circuit breaking mechanism comprises a guide block which is sleeved on a guide rod in a sliding manner, a first spring which is located on one side, far away from the electromagnetic block, of the guide block is sleeved on the guide rod, an insulating base is arranged at the top of the guide block, a third rotating shaft is rotatably connected to the top of the insulating base, a cam is fixedly installed on the outer side wall of the third rotating shaft, an insulating arc strip is arranged on the outer side wall of the cam, a third upright column and a conductive column which are located on one side of the third rotating shaft are arranged at the top of the insulating base, and a conductive sheet is arranged on the outer side wall of the insulating arc strip and located between the third upright column and the conductive column.

Preferably, the top of insulating base is provided with the rectangle piece that is located between third pivot and the electromagnetism piece, the cavity has been seted up to the inside of rectangle piece, the one end inner wall of cavity runs through and is provided with rather than sliding connection's butt pole, the one end that the butt pole is located the cavity is provided with the piece that supports against with cam and insulating arc strip, the one end that the butt pole is located the cavity is provided with the briquetting, fixedly connected with third spring between the other end inner wall of briquetting and cavity, one side that the rectangle piece is close to the electromagnetism piece is provided with magnetic force strip.

Preferably, the first heat dissipation mechanism is including setting up in first pivot first flabellum, fixed mounting has first gear on the lateral wall of first pivot, rotate on the one end inner wall of casing and be connected with the second pivot, the one end of second pivot runs through the casing and with servo motor's output shaft fixed connection, be provided with the second flabellum on the lateral wall of second pivot, fixed mounting has the second gear on the lateral wall of second pivot, the transmission is connected with the drive belt between second gear and the first gear, insulating base's top is provided with fourth stand and the electric column that is located the third pivot opposite side, be provided with the circular telegram piece on the lateral wall of insulating arc strip, circular telegram piece and electric column all are located servo motor's circuit.

Preferably, the second heat dissipation mechanism comprises a sliding block which is sleeved on the sliding rod in a sliding manner, an extension column and an extension block are arranged on a side wall, close to the groove, of the sliding block, a push rod is arranged on the outer side wall of the second rotating shaft, a circular tube and a box body are arranged on the inner wall of one side of the shell, a second spring, far away from the circular tube, of the sliding block is sleeved on the sliding rod, a connecting rod located in the circular tube is arranged on a side wall, close to the circular tube, of the extension block, a sliding plug which is in sliding connection with the inner wall of the circular tube is fixedly arranged at one end, close to the circular tube, of the connecting rod, and a reminding block which is propped against the circular tube is fixedly arranged on the outer side wall of the connecting rod.

Preferably, the through hole between the sliding plug and the reminding block is formed in the round tube, the refrigerator is arranged on the outer side wall of the shell, the energizing sheet and the energizing column are both located in a circuit of the refrigerator, a first connecting tube and a second connecting tube which are communicated with the inside of the round tube are arranged on the round tube, one side of the connecting rod is far away from the sliding plug and is provided with a one-way valve in the first connecting tube and the second connecting tube, one end of the first connecting tube far away from the round tube is communicated with the refrigerator, one end of the second connecting tube far away from the round tube is communicated with the box body, and a plurality of spray heads are arranged on the box body.

Preferably, the abutment is integrally formed with the abutment rod.

Preferably, the conductive sheet is located between the first and second posts.

The invention has the beneficial effects that:

through setting up electromagnetic block, first stand, second stand, first pivot, servo motor, automatic circuit breaking mechanism and first heat dissipation mechanism, can be when circuit current short circuit or abnormal conditions take place, automatic circuit breaking and start servo motor to blow the heat dissipation to the conducting strip, compare prior art, the degree of automation of this invention is higher, and it is more convenient to use.

Through setting up second heat dissipation mechanism, can dispel the heat the cooling to conducting strip blowout cold wind automatically, with the cooperation of dispelling the heat of blowing use, further improved the radiating effect of conducting strip, send the sound simultaneously at the heat dissipation in-process and remind nearby staff in time to overhaul, when the circuit resumes normally, can also switch on the circuit automatically, close servo motor and refrigerator, practiced thrift the resource, the structure is compacter.

Drawings

Fig. 1 is a schematic perspective view of a bidirectional current hybrid dc breaker according to the present invention;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present invention;

FIG. 3 is a schematic diagram of the structure of the present invention at B in FIG. 1;

FIG. 4 is a schematic plan view of the inside of a rectangular block according to the present invention;

FIG. 5 is a schematic view of a planar structure above an insulating base of the present invention;

fig. 6 is a schematic plan view of the inside of the round tube of the present invention.

In the figure: 1 casing, 2 grooves, 3 guide rods, 4 first springs, 5 electromagnetic blocks, 6 magnetic force strips, 7 first upright posts, 8 conducting strips, 9 second upright posts, 10 first connecting pipes, 11 refrigerators, 12 servo motors, 13 first rotating shafts, 14 second springs, 15 sliding rods, 16 first gears, 17 first fan blades, 18 electric cylinders, 19 insulating bases, 20 electric plates, 21 rectangular blocks, 22 supporting rods, 23 supporting blocks, 24 cams, 25 insulating arc strips, 26 second rotating shafts, 27 sliding blocks, 28 round pipes, 29 through holes, 30 reminding blocks, 31 connecting rods, 32 extending blocks, 33 pushing rods, 34 extending columns, 35 second gears, 36 driving belts, 37 second fan blades, 38 guide blocks, 39 pressing blocks, 40 cavities, 41 third springs, 42 third upright posts, 43 fourth upright posts, 44 conducting columns, 45 third rotating shafts, 46 sliding plugs, 47 second connecting pipes, 48 box bodies and 49 spray heads.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Referring to fig. 1-6, a bidirectional current mixing type direct current breaker comprises a housing 1, a groove 2 is provided in the inner bottom of the housing 1, a guide rod 3 is fixedly connected between inner walls of two ends of the groove 2, an electromagnetic block 5 is provided at the inner bottom of the housing 1, a first upright post 7 and a second upright post 9 positioned at one side of the groove 2 are provided at the inner top of the housing 1, an automatic circuit breaking mechanism connected with the guide rod 3 is provided in the housing 1, the automatic circuit breaking mechanism comprises a guide block 38 slidingly sleeved on the guide rod 3, a first spring 4 positioned at one side of the guide block 38 far from the electromagnetic block 5 is sleeved on the guide rod 3, an insulating base 19 is provided at the top of the guide block 38, a third rotating shaft 45 is rotatably connected at the top of the insulating base 19, a cam 24 is fixedly mounted on the outer side wall of the third rotating shaft 45, an insulating arc bar 25 is provided on the outer side wall of the cam 24, the top of the insulating base 19 is provided with a third upright post 42 and a conductive post 44 which are positioned at one side of a third rotating shaft 45, the outer side wall of the insulating arc bar 25 is provided with a conductive sheet 8, the conductive sheet 8 is positioned between the third upright post 42 and the conductive post 44, the conductive sheet 8 is positioned between the first upright post 7 and the second upright post 9, the top of the insulating base 19 is provided with a rectangular block 21 positioned between the third rotating shaft 45 and the electromagnetic block 5, the inside of the rectangular block 21 is provided with a cavity 40, the inner wall of one end of the cavity 40 is penetrated and provided with a supporting rod 22 which is in sliding connection with the supporting rod, one end of the supporting rod 22 positioned outside the cavity 40 is provided with a supporting block 23 which is propped against the cam 24 and the insulating arc bar 25, one end of the supporting rod 22 positioned inside the cavity 40 is provided with a pressing block 39, a third spring 41 is fixedly connected between the pressing block 39 and the inner wall of the other end of the cavity 40, a magnetic strip 6 is arranged on one side of the rectangular block 21 close to the electromagnetic block 5;

a first rotating shaft 13 is rotationally connected to the inner wall of one side of the shell 1, a groove 2 is positioned between the first rotating shaft 13 and the electromagnetic block 5, a servo motor 12 is fixedly arranged on the outer wall of one side of the shell 1, a first heat dissipation mechanism connected with the first rotating shaft 13 is arranged in the shell 1, the first heat dissipation mechanism comprises a first upright post 43 and a power-on column 18 which are arranged on the other side of the third rotating shaft 45, a first gear 16 is fixedly arranged on the outer side wall of the first rotating shaft 13, a second rotating shaft 26 is rotationally connected to the inner wall of one end of the shell 1, one end of the second rotating shaft 26 penetrates through the shell 1 and is fixedly connected with the output shaft of the servo motor 12, a second fan blade 37 is arranged on the outer side wall of the second rotating shaft 26, a second gear 35 is fixedly arranged on the outer side wall of the second rotating shaft 26, a driving belt 36 is connected between the second gear 35 and the first gear 16, a fourth upright post 43 and a power-on column 18 which are positioned on the other side of the third rotating shaft 45 are arranged on the top of the insulating base 19, a power-on sheet 20 and a power-on column 18 are both positioned in a circuit of the servo motor 12;

the utility model provides a be provided with the second cooling mechanism that is connected with slide bar 15 between the both sides inner wall of casing 1, be provided with the second cooling mechanism that is connected with slide bar 15 in the casing 1, the second cooling mechanism includes the slider 27 of slip cap dress on slide bar 15, be provided with extension post 34 and extension piece 32 on the lateral wall that slider 27 is close to recess 2, be provided with push rod 33 on the lateral wall of second pivot 26, be provided with pipe 28 and box 48 on the one side inner wall of casing 1, the cover is equipped with the second spring 14 of slider 27 side of keeping away from pipe 28 on the slide bar 15, be provided with the connecting rod 31 that is located pipe 28 on the lateral wall that extension piece 32 is close to pipe 28, the one end fixed mounting that connecting rod 31 is located pipe 28 has with pipe 28 inner wall sliding connection's slip cap 46, fixed mounting has the warning piece 30 that offsets with pipe 28 on the lateral wall of connecting rod 31, set up the through-hole 29 that is located between slip cap 46 and the warning piece 30 on the pipe 28, be provided with refrigerator 11 on the lateral wall of casing 1, circular plate 20 and circular plate 18 all are located the circuit of refrigerator 11, be provided with first connecting pipe 10 and second connecting pipe 47 and second connecting pipe 10 and second connecting pipe 48 that are kept away from in the box 48 that are all kept away from to the same side as far from to be provided with on pipe 28, the connecting rod 47 is located the connecting pipe 10 and is kept away from the one end with 10 and is located the connecting pipe 48, the one end is kept away from the connecting pipe 47 and is kept away from the connecting pipe 48.

When the electromagnetic block is used, through the short circuit of circuit current or abnormal conditions, the instantaneous voltage on the electromagnetic block 5 is increased, the magnetic force of the electromagnetic block 5 is enhanced, the surface temperature of the conducting plate 8 is increased, the repulsive force to the magnetic bar 6 is increased, so that the conducting block 38 slides in the direction away from the electromagnetic block 5, the first spring 4 is compressed, the conducting plate 8 above the insulating base 19 moves in the direction away from the electromagnetic block 5, as the conducting plate 8 contacts the conducting plate 8 mutually in the moving process and forms an obstruction effect on the movement in the linear direction of the conducting plate 8, the electrified plate 20 and the cam 24 rotate around the axis of the third rotating shaft 45, the conducting plate 8 is far away from the conducting post 44, the automatic circuit breaking effect is realized, and in the rotating process of the conducting plate 8 around the axis of the third rotating shaft 45, the conducting plate 23 and the third spring 41 (in the initially compressed state) are arranged, the outer side wall of the cam 24 is always connected with the abutting block 23 in the rotating process, and when the conducting plate 38 moves to the conducting plate 5 to the farthest from the conducting plate 23, the protruding part of the conducting plate 24 rotates to the third rotating shaft 23, and the third rotating part of the conducting plate 23 is far away from the conducting plate 18 is contacted with the fourth rotating post 18, and the fourth spring 43 is contacted with the conducting plate 18 simultaneously;

when the electric sheet 20 and the electric column 18 are contacted with each other, the servo motor 12 and the refrigerator 11 are connected to a circuit, the servo motor 12 rotates the second rotating shaft 26, the first fan blade 17 on the first rotating shaft 13 and the second fan blade 37 on the second rotating shaft 26 are rotated by arranging the first gear 16, the second gear 35 and the driving belt 36, so that the electric sheet 8 and the electric sheet 20 are blown and radiated, the second rotating shaft 26 rotates and simultaneously the push rod 33 rotates around the axis of the second rotating shaft 26, and in the rotating process of the push rod 33, the push rod 33 is firstly contacted with the extending column 34 and then separated from each other by arranging the second spring 14 (initially in a compressed state), the slide rod 15, the slide block 27 and the extending column 34;

in the process that the push rod 33 and the extending column 34 are in contact with each other until the extending block 32 and the reminding block 30 are to be separated, the sliding block 27 drives the extending block 32 and the reminding block 30 to slide in the direction away from the circular tube 28, the second spring 14 is further compressed, the extending block 32 drives the sliding plug 46 on the connecting rod 31 to slide in the direction close to the second rotating shaft 26, so that a sucking effect is generated, cold air generated by the operation of the refrigerator 11 is sucked into the circular tube 28 through the first connecting tube 10, when the push rod 33 and the extending column 34 are not in contact any more, the elastic force generated by the compression of the second spring 14 enables the sliding block 27 to return to the initial position, so that the reminding block 30 and the circular tube 28 collide with each other to generate sound to remind workers to overhaul, meanwhile, the sliding plug 46 returns to the initial position, and the cold air sucked into the circular tube 28 is extruded into the box 48 through the second connecting tube 47 and is sprayed out through the spray nozzle 49 on the box 48 to cool the conductive sheet 8 and the electrified sheet 20;

when the maintenance circuit is restored to a normal state, the magnetism of the electromagnetic block 5 is reduced, the guide block 38 returns to the initial position by the elastic force generated by compression of the first spring 4, the guide block 38 drives the conductive sheet 8 to move, the conductive sheet 8 contacts with the first upright post 7 in the moving process, the first upright post 7 forms a blocking effect on the movement of the conductive sheet 8 in the linear direction, so that the conductive sheet 8 rotates around the axis of the third rotating shaft 45 in the other direction, the outer side wall of the cam 24 always contacts with the abutting block 23 in the rotating process by arranging the abutting rod 22, the abutting block 23 and the third spring 41 (in the initial compressed state), and when the guide block 38 returns to the initial position, the conductive sheet 8 contacts with the conductive post 44, the electrified sheet 20 is separated from the electrified post 18 and contacts with the fourth upright post 43, and the servo motor 12 and the refrigerator 11 do not work any more.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The utility model provides a two-way electric current hybrid direct current circuit breaker, includes casing (1), its characterized in that, recess (2) have been seted up to the interior bottom of casing (1), fixedly connected with guide bar (3) between the both ends inner wall of recess (2), the interior bottom of casing (1) is provided with electromagnetism piece (5), the interior top of casing (1) is provided with first stand (7) and second stand (9) that are located recess (2) one side, be provided with the automatic circuit breaker mechanism that is connected with guide bar (3) in casing (1), rotate on the one side inner wall of casing (1) and be connected with first pivot (13), recess (2) are located between first pivot (13) and electromagnetism piece (5), fixedly mounted has servo motor (12) on the one side outer wall of casing (1), be provided with the first mechanism that is connected with first pivot (13) in casing (1), fixedly connected with slide bar (15) between the both sides inner wall of casing (1), be provided with the second heat dissipation mechanism that slide bar (15) are connected with.

2. The bidirectional current mixing type direct current breaker according to claim 1, wherein the automatic circuit breaking mechanism comprises a guide block (38) which is sleeved on a guide rod (3) in a sliding manner, a first spring (4) which is positioned on one side, far away from the electromagnetic block (5), of the guide block (38) is sleeved on the guide rod (3), an insulating base (19) is arranged at the top of the guide block (38), a third rotating shaft (45) is rotatably connected to the top of the insulating base (19), a cam (24) is fixedly arranged on the outer side wall of the third rotating shaft (45), an insulating arc bar (25) is arranged on the outer side wall of the cam (24), a third upright post (42) and a conductive column (44) which are positioned on one side of the third rotating shaft (45) are arranged at the top of the insulating base (19), a conductive sheet (8) is arranged on the outer side wall of the insulating arc bar (25), and the conductive sheet (8) is positioned between the third upright post (42) and the conductive column (44).

3. The bidirectional current mixing type direct current breaker according to claim 2, wherein a rectangular block (21) positioned between a third rotating shaft (45) and an electromagnetic block (5) is arranged at the top of the insulating base (19), a cavity (40) is formed in the rectangular block (21), a supporting rod (22) in sliding connection with the rectangular block (40) is arranged on one end inner wall of the cavity (40) in a penetrating mode, a supporting block (23) supporting against a cam (24) and an insulating arc bar (25) is arranged at one end, outside the cavity (40), of the supporting rod (22), a pressing block (39) is arranged at one end, positioned in the cavity (40), of the supporting rod (22), a third spring (41) is fixedly connected between the pressing block (39) and the other end inner wall of the cavity (40), and a magnetic bar (6) is arranged on one side, close to the electromagnetic block (5), of the rectangular block (21).

4. The bidirectional current mixing type direct current breaker according to claim 2, wherein the first heat dissipation mechanism comprises a first fan blade (17) arranged on a first rotating shaft (13), a first gear (16) is fixedly arranged on the outer side wall of the first rotating shaft (13), a second rotating shaft (26) is rotatably connected on the inner wall of one end of the shell (1), one end of the second rotating shaft (26) penetrates through the shell (1) and is fixedly connected with an output shaft of the servo motor (12), a second fan blade (37) is arranged on the outer side wall of the second rotating shaft (26), a second gear (35) is fixedly arranged on the outer side wall of the second rotating shaft (26), a transmission belt (36) is connected between the second gear (35) and the first gear (16), a fourth stand column (43) and a power-on column (18) which are positioned on the other side of the third rotating shaft (45) are arranged on the top of the insulating base (19), a power-on sheet (20) is arranged on the outer side wall of the insulating arc strip (25), and the power-on sheet (20) and the power-on column (18) are positioned in the servo circuit (12).

5. The bidirectional current mixing type direct current breaker according to claim 4, wherein the second heat dissipation mechanism comprises a sliding block (27) sleeved on the sliding rod (15), an extension column (34) and an extension block (32) are arranged on a side wall, close to the groove (2), of the sliding block (27), a push rod (33) is arranged on the outer side wall of the second rotating shaft (26), a circular tube (28) and a box body (48) are arranged on the inner wall of one side of the shell (1), a second spring (14) on one side, far away from the circular tube (28), of the sliding block (27) is sleeved on the sliding rod (15), a connecting rod (31) positioned in the circular tube (28) is arranged on a side wall, close to the circular tube (28), of the extension block (32), a sliding plug (46) in sliding connection with the inner wall of the circular tube (28) is fixedly arranged on one end, close to the connecting rod (31), of the outer side wall of the connecting rod (31), and a reminding block (30) is fixedly arranged on the outer side wall of the connecting rod (31).

6. The bidirectional current mixing type direct current breaker according to claim 5, wherein the round tube (28) is provided with a through hole (29) between the sliding plug (46) and the reminding block (30), a refrigerator (11) is arranged on an outer side wall of the shell (1), the energizing sheet (20) and the energizing column (18) are both arranged in a circuit of the refrigerator (11), the round tube (28) is provided with a first connecting tube (10) and a second connecting tube (47) which are communicated with the inside of the round tube (28), the first connecting tube (10) and the second connecting tube (47) are internally provided with one-way valves and are both arranged on one side of the sliding plug (46) away from the connecting rod (31), one end of the first connecting tube (10) away from the round tube (28) is communicated with the refrigerator (11), one end of the second connecting tube (47) away from the round tube (28) is communicated with a box body (48), and a plurality of spray heads (49) are arranged on the box body (48).

7. A bi-directional current hybrid dc breaker according to claim 3, characterized in that the abutment (23) is integrally formed with the abutment bar (22).

8. A bi-directional current hybrid direct current breaker according to claim 2, characterized in that the conductive sheet (8) is located between the first leg (7) and the second leg (9).