CN111554543A - Quick disconnected circuit breaker mechanism - Google Patents
Quick disconnected circuit breaker mechanism Download PDFInfo
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- CN111554543A CN111554543A CN202010414400.2A CN202010414400A CN111554543A CN 111554543 A CN111554543 A CN 111554543A CN 202010414400 A CN202010414400 A CN 202010414400A CN 111554543 A CN111554543 A CN 111554543A
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- 230000003068 static effect Effects 0.000 claims abstract description 147
- 239000002184 metal Substances 0.000 claims description 37
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 238000000605 extraction Methods 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a circuit breaker mechanism for rapid breaking, which comprises: the shell comprises an arc extinguishing shell and a driving shell, and the driving shell is arranged on the arc extinguishing shell; the driving part is arranged on the driving shell and comprises a driving sliding part, a driving automatic part and a driving manual part, the driving sliding part is arranged on the driving shell, and the driving automatic part and the driving manual part are both arranged on the driving sliding part; the conductive part is arranged on the arc extinguishing shell and comprises a movable conductive part and a static conductive part, the movable conductive part is arranged on the pull rod, and the static conductive part is arranged on the arc extinguishing shell; the movable conductive piece comprises a conductive sliding piece, a movable conductive rod and a movable conductive contact, the conductive sliding piece is arranged on the insulating pull rod, the movable conductive rod is arranged on the conductive sliding piece, and the movable conductive contact is arranged on the movable conductive rod; the invention has the advantages of simple structure, reasonable structural design, high maintenance efficiency, high closing and opening speed, good arc extinguishing performance and safe and reliable operation.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a circuit breaker mechanism for rapid breaking.
Background
The high-voltage vacuum circuit breaker is named because arc extinguishing media and insulating media of a contact gap after arc extinguishing are high vacuum; the arc extinguishing device has the advantages of small volume, light weight, suitability for frequent operation and no need of maintenance for arc extinguishing, and is relatively popularized in power distribution networks. When the vacuum circuit breaker is used, electric arcs are easily generated when a moving contact and a fixed contact of the vacuum circuit breaker are close to each other, so that the switching-on and switching-off speed of the vacuum circuit breaker is required to be as fast as possible, and the vacuum circuit breaker is generally required to be disconnected within 20ms of a fluctuation period, so that the generation of the electric arcs is reduced, and the damage to equipment is reduced.
The operating mechanism (electromagnetic or electric spring mechanism) of a conventional high-voltage vacuum circuit breaker is a mechanical system consisting of a complex transmission mechanism. The mechanism has a plurality of transmission parts, large motion time dispersion, poor motion controllability, slow response speed and uncontrollable motion speed, so that the precise control of mechanical motion is difficult to realize. The purpose of synchronous switching-on is more difficult to achieve, but in a power grid, switching-on inrush current is large, a vacuum tube contact is seriously damaged, and the service life of a circuit breaker is remarkably shortened.
Disclosure of Invention
In order to overcome the defects, the invention provides a quick breaking circuit breaker mechanism, which specifically adopts the following technical scheme:
a quick disconnect circuit breaker mechanism comprising:
the shell comprises an arc extinguishing shell and a driving shell, and the driving shell is arranged on the arc extinguishing shell; the driving part is arranged on the driving shell and comprises a driving sliding part, a driving automatic part and a driving manual part, the driving sliding part is arranged on the driving shell, and the driving automatic part and the driving manual part are both arranged on the driving sliding part; the driving sliding part comprises a pull rod, a resistance plate, a pull plate, a buffer spring and a closing spring, the pull rod is arranged on the arc extinguishing shell, and the resistance plate, the pull plate, the buffer spring and the closing spring are all arranged on the pull rod; the pull rod comprises a metal pull rod and an insulating pull rod, the metal pull rod is arranged on the arc extinguishing shell, and the insulating pull rod is arranged on the metal pull rod.
The conductive part is arranged on the arc extinguishing shell and comprises a dynamic conductive part and a static conductive part, the dynamic conductive part is arranged on the pull rod, and the static conductive part is arranged on the arc extinguishing shell; the movable conductive piece comprises a conductive sliding piece, a movable conductive rod and a movable conductive contact, the conductive sliding piece is arranged on the insulating pull rod, the movable conductive rod is arranged on the conductive sliding piece, and the movable conductive contact is arranged on the movable conductive rod; the static conductive parts comprise a first fracture static conductive part and a second fracture static conductive part, and the first fracture static conductive part and the second fracture static conductive part are both arranged on the arc extinguishing shell; the driving sliding part drives the conductive sliding part and the movable conductive rod to slide along the pull rod, so that the movable conductive contact is respectively closed or disconnected with the first fracture static conductive part and the second fracture static conductive part.
Preferably, the arc extinguishing housing comprises an arc extinguishing groove and an arc extinguishing cover, and the arc extinguishing cover is arranged on the arc extinguishing groove; the arc extinguishing groove is rectangular groove-shaped, end face baffles are arranged on two end faces of the arc extinguishing groove, the end face baffles can completely seal the two end faces of the arc extinguishing groove, a sliding through hole is formed in the end face baffle at one end, and an arc extinguishing sliding pipe is fixedly embedded in the sliding through hole; the arc extinguishing shell is characterized in that first static guide through holes are formed in the bottom of the arc extinguishing shell groove, the number of the first static guide through holes is three, and the first static guide through holes are uniformly distributed along the longitudinal direction; the side wall of the arc extinguishing shell is provided with three second static guide through holes, and the second static guide through holes are uniformly distributed along the longitudinal direction; a plurality of threaded holes are uniformly distributed on the notch of the arc extinguishing groove.
Preferably, the arc extinguishing cover is rectangular, and a vacuum extraction through hole, an arc extinguishing fixing through hole and an observation hole are formed in the arc extinguishing cover; a vacuum extraction pipe is embedded in the vacuum extraction through hole, and a vacuum gate valve is arranged on the vacuum extraction pipe; a plurality of arc extinguishing fixing through holes are uniformly distributed on the arc extinguishing cover, fastening screws are embedded in the arc extinguishing fixing through holes, the arc extinguishing cover is tightly attached to the notch of the arc extinguishing groove through the fastening screws, and a sealing gasket is arranged between the arc extinguishing cover and the arc extinguishing groove; the observation hole is provided with a plurality of, all fix the inlaying in the observation hole and be equipped with the observation transparent plate. Preferably, the driving shell is box-shaped, a box opening of the driving shell is fixedly formed in the end face baffle at one end of the arc extinguishing shell, the arc extinguishing sliding tube is located in the box opening of the driving shell, and a hinge through hole is formed in the side face of the driving shell.
Preferably, the metal pull rod is embedded in the arc extinguishing sliding tube, and the metal pull rod is in reciprocating sliding sealing connection with the arc extinguishing sliding tube; the insulating pull rod is a square rod, and the length of the insulating pull rod is smaller than that of the arc extinguishing shell; the insulating pull rod is arranged on the metal pull rod, one end of the insulating pull rod is fixedly connected with one end of the metal pull rod, and the axis of the insulating pull rod is overlapped with the axis of the metal pull rod.
Preferably, the resistance plates are plate-shaped, the resistance plates are provided with three resistance fixing through holes, and the resistance plates are uniformly distributed and fixedly sleeved on the insulating pull rod through the resistance fixing through holes; the pulling plates are plate-shaped, pulling fixing through holes are formed in the pulling plates, the number of the pulling plates is three, and the pulling plates are fixedly sleeved on the insulating pull rod through the pulling fixing through holes in an evenly distributed mode.
The buffer springs are pressure springs, the number of the buffer springs is three, the buffer springs are uniformly distributed and sleeved on the insulating pull rod, and the buffer springs are located between the resistance plate and the pull plate; the closing spring is a pressure spring, the inner diameter of the closing spring is not smaller than that of the buffer spring, the closing spring is sleeved on one end of the insulating pull rod, and the closing spring is located between the end face baffle at one end and the resistance plate at the last side.
Preferably, the driving automatic part comprises a magnetic coil, a driving power supply and a driving switch, the magnetic coil is arranged on the metal pull rod, the driving switch is arranged on the magnetic coil, and the driving power supply is electrically connected with the magnetic coil; the inner diameter of the magnetic coil is larger than the diameter of the metal pull rod, the magnetic line of force is sleeved on the other end of the metal pull rod, and leads at two ends of the magnetic coil penetrate through the driving shell to be connected with the driving power supply; the driving switch comprises an automatic driving switch and a manual driving switch, the automatic driving switch is arranged on the lead at one end of the magnetic coil, the manual driving switch is connected on the lead at one end of the magnetic coil in parallel, and the manual driving switch is connected with the automatic driving switch in parallel.
Preferably, the drive finger comprises a manual drive grip and a locking member, both disposed on the drive housing; the manual driving handle is in a boomerang shape, one end of the manual driving handle is hinged with the other end of the metal pull rod, the other end of the manual driving handle penetrates through the hinge through hole, and the manual driving handle is hinged with the driving shell at the hinge through hole; the other end arm of the manual driving handle is fixedly provided with a ratchet bar.
The locking piece comprises a locking seat, a locking rod and a magnet block, the locking seat and the magnet block are both arranged on the driving shell, and the locking rod is arranged on the locking seat; the locking seat comprises a locking plate, the locking plate is provided with a plurality of pieces, and the locking plates are mutually parallel and fixedly arranged on the driving shell on the upper side of the other end of the manual driving handle; the locking device is characterized in that a locking shaft is fixedly arranged on the locking plate, a locking pipe is sleeved on the locking shaft, the length of the locking rod is smaller than that of the other end of the manual driving handle, one end of the locking handle is fixedly arranged on the locking pipe, and the length of the locking rod is larger than the vertical distance from the locking pipe to the manual driving handle.
Preferably, the conductive sliding part comprises a conductive sliding tube and a stress plate, the conductive sliding tube is arranged on the insulating pull rod, and the stress plate is arranged on the conductive sliding tube; the conductive sliding tubes are tubular, three conductive sliding tubes are arranged, the conductive sliding tubes are uniformly distributed and sleeved on the insulating pull rod, and the conductive sliding tubes are positioned between the buffer spring and the pulling plate; the stress plate is plate-shaped, the stress plate is provided with three, be provided with the fixed through hole of atress on the stress plate, the stress plate passes through the fixed through hole of atress corresponds fixed suit one by one on the electrically conductive sliding tube one end, and the stress plate with the buffer spring contact, simultaneously stress plate to resistance plate interval is less than buffer spring free length.
The movable conducting rods are made of copper and are right-angled, three movable conducting rods are arranged, and the movable conducting rods are vertically and fixedly arranged on the conductive sliding tube one by one correspondingly; the movable conducting rod is provided with a temperature sensor which is electrically connected with the automatic driving switch; the movable conductive contacts are copper contacts and are six, and the movable conductive contacts are uniformly distributed and fixedly arranged on the end points of the movable conductive rod.
Preferably, the first fracture static conductive piece comprises three first static conductive rods and three first static conductive contacts, the first static conductive rods are arranged on the arc extinguishing shell, and the first static conductive contacts are arranged on the first static conductive rods and are correspondingly embedded in the first static conductive through holes one by one; first static conductive contact is the copper contact, first static conductive contact is provided with threely, first static conductive contact corresponds fixed the setting one by one on first static conductive rod one end, and first static conductive contact is located in the arc extinguishing shell, simultaneously first static conductive contact to arc extinguishing shell groove bottom interval with move conductive rod one end move conductive contact to arc extinguishing shell groove bottom interval the same, first static conductive contact to arc extinguishing shell lateral wall interval with move conductive rod one end move conductive contact to arc extinguishing shell lateral wall interval the same.
The second fracture static conductive piece comprises three second static conductive rods and three second static conductive contacts, the second static conductive rods are arranged on the arc extinguishing shell, and the second static conductive contacts are arranged on the second static conductive rods which are correspondingly embedded in the second static conductive through holes one by one; the second static conductive contact is a copper contact, the number of the second static conductive contacts is three, the second static conductive contacts are fixedly arranged on one end of the second static conductive rod one by one, the second static conductive contacts are located in the arc extinguishing shell, the distance from the second static conductive contacts to the bottom of the arc extinguishing shell groove is the same as that from the movable conductive contacts to the bottom of the arc extinguishing shell groove at the other end of the movable conductive rod, and the distance from the second static conductive contacts to the side wall of the arc extinguishing shell is the same as that from the movable conductive contacts to the side wall of the arc extinguishing shell at the other end of the movable conductive rod.
The invention at least comprises the following beneficial effects:
1) the quick-breaking circuit breaker mechanism has the advantages of simple structure, reasonable structural design, high maintenance efficiency, high closing and opening speed, good arc extinguishing performance and safe and reliable operation;
2) the circuit breaker mechanism for rapid breaking is provided with a driving part, the driving part comprises a driving sliding part and a driving automatic part, the driving sliding part comprises a pull rod, a resistance plate, a pull plate, a buffer spring and a closing spring, the driving automatic part comprises a magnetic coil, a driving power supply and a driving switch, the driving switch can control the driving power supply to switch on and off the magnetic coil, and the magnetic coil attracts the pull rod to move towards the rear side after being switched on, so that the automatic breaking of the circuit breaker mechanism for rapid breaking is realized; the driving switch comprises an automatic driving switch and a manual driving switch, the automatic driving switch and the manual driving switch are connected on a wire at one end of the magnetic coil in parallel, and when the automatic driving switch fails, a worker can manually open or close the manual driving switch, so that the rapid breaking breaker mechanism is switched off, and the operation safety reliability and the switching-on and switching-off efficiency of the rapid breaking breaker mechanism are improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a front side three-dimensional body of a quick breaking circuit breaker mechanism of the invention;
fig. 2 is a schematic view of a front-side bottom perspective structure of the quick breaking circuit breaker mechanism of the present invention;
fig. 3 is a schematic structural view of a rear side of the quick breaking breaker mechanism of the invention;
fig. 4 is a partial enlarged view of a in the circuit breaker mechanism diagram 2 for quick breaking according to the present invention;
fig. 5 is a schematic view of a first longitudinal cross-sectional perspective structure of the quick disconnect circuit breaker mechanism of the present invention;
fig. 6 is a schematic diagram of a second longitudinal sectional perspective structure of the circuit breaker mechanism for quick breaking according to the present invention.
Wherein: 1-arc chute, 2-arc chute cover, 3-end baffle, 4-arc chute, 5-vacuum draw tube, 6-vacuum gate valve, 7-fastening screw, 8-viewing transparent plate, 9-hinged through hole, 10-resistance plate, 11-pulling plate, 12-buffer spring, 13-closing spring, 14-metal pull rod, 15-insulating pull rod, 16-magnetic coil, 17-driving power supply, 18-automatic driving switch, 19-manual driving switch, 20-manual driving handle, 21-ratchet bar, 22-locking plate, 23-locking rod, 24-magnet block, 25-locking tube, 26-dynamic conductive rod, 27-dynamic conductive contact, 28-conductive slide tube, 29-stress plate, 30-temperature sensor, 31-first static conductive rod, 32-first static conductive contact, 33-second static conductive rod, 34-second static conductive contact, 35-insulating porcelain bottle, 36-lead, 37-driving shell.
Detailed Description
Technical solutions of the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.
As shown in fig. 1 to 6, a circuit breaker mechanism for rapid breaking includes a housing, a driving portion and a conductive portion, wherein the driving portion and the conductive portion are disposed on the housing. The housing comprises an arc extinguishing chamber and a driving chamber 37, and the driving chamber 37 is disposed on the arc extinguishing chamber. The arc extinguishing shell comprises an arc extinguishing groove 1 and an arc extinguishing cover 2, wherein the arc extinguishing cover 2 is arranged on the arc extinguishing groove 1. The arc extinguishing groove 1 is rectangular groove-shaped, 1 both ends face in arc extinguishing groove all is provided with end baffle 3, end baffle 3 can with 1 both ends face in arc extinguishing groove seals completely, one end 3 center department of end baffle is provided with the slip through hole, the fixed arc extinguishing sliding tube 4 that is equipped with that inlays in the slip through hole. The arc extinguishing shell is characterized in that three first static guide through holes are formed in the bottom of the arc extinguishing shell groove, and the first static guide through holes are uniformly distributed along the longitudinal direction. And the side wall of the arc extinguishing shell is provided with three second static guide through holes, and the second static guide through holes are uniformly distributed along the longitudinal direction. Six threaded holes are uniformly distributed on the notch of the arc extinguishing groove 1.
The driving shell 37 is box-shaped, the size of the driving shell 37 is smaller than that of the arc extinguishing shell, the box opening of the driving shell 37 is fixedly arranged on the end face baffle 3 at one end of the arc extinguishing shell, the arc extinguishing sliding tube 4 is positioned in the box opening of the driving shell 37, and the side face of the driving shell 37 is provided with a hinged through hole 9.
The driving part comprises a driving sliding part, a driving automatic part and a driving manual part, and the driving automatic part and the driving manual part are both arranged on the driving sliding part. The driving sliding part comprises a pull rod, a resistance plate 10, a pull plate 11, a buffer spring 12 and a closing spring 13, the pull rod is arranged on the arc extinguishing shell, and the resistance plate 10, the pull plate 11, the buffer spring 12 and the closing spring 13 are all arranged on the pull rod.
The pull rod comprises a metal pull rod 14 and an insulating pull rod 15, and the insulating pull rod 15 is arranged on the metal pull rod 14. The metal pull rod 14 is embedded in the arc extinguishing sliding tube 4, and the metal pull rod 14 is in reciprocating sliding sealing connection with the arc extinguishing sliding tube 4. Specifically, piston rings are arranged between the metal pull rod 14 and the arc extinguishing sliding tube 4, and the number of the piston rings is not less than three, so that the metal pull rod 14 and the arc extinguishing sliding tube 4 are in reciprocating sliding sealing connection. The insulating pull rod 15 is a square rod, and the length of the insulating pull rod 15 is smaller than that of the arc extinguishing shell. One end of the insulating pull rod 15 is fixedly connected with one end of the metal pull rod 14, and the axis of the insulating pull rod 15 is overlapped with the axis of the metal pull rod 14.
The resistance board 10 is platelike, the center of resistance board 10 is provided with the fixed through hole of resistance, resistance board 10 is provided with threely, resistance board 10 passes through the fixed suit of through hole evenly distributed of resistance is in on the insulating pull rod 15. The pull plate 11 is plate-shaped, the size of the pull plate 11 is smaller than that of the resistance plate 10, pulling fixing through holes are formed in the center of the pull plate 11, three pull plates 11 are arranged, the pull plates 11 are uniformly distributed and fixedly sleeved on the insulating pull rod 15 through the pulling fixing through holes, and the pull plate 11 is located on the front side of the resistance plate 10.
The buffer springs 12 are pressure springs, the inner diameter of each buffer spring 12 is larger than the diagonal length of the cross section of each insulating pull rod 15, the number of the buffer springs 12 is three, the buffer springs 12 are uniformly distributed and sleeved on the insulating pull rods 15, the buffer springs 12 are located between the resistance plate 10 and the pull plate 11, and meanwhile, the free length of each buffer spring 12 is smaller than the distance between the resistance plate 10 and the pull plate 11. The closing spring 13 is a pressure spring, the inner diameter of the closing spring 13 is not smaller than the inner diameter of the buffer spring 12, the closing spring 13 is sleeved on one end of the insulating pull rod 15, and the closing spring 13 is located between the end face baffle 3 and the resistance plate 10 at the last side at one end.
The driving automatic part comprises a magnetic coil 16, a driving power supply 17 and a driving switch, the magnetic coil 16 is arranged on the metal pull rod 14, the driving switch is arranged on the magnetic coil 16, and the driving power supply 17 is electrically connected with the magnetic coil 16. The inner diameter of the magnetic coil 16 is larger than the diameter of the metal pull rod 14, the magnetic coil 16 is sleeved on the other end of the metal pull rod 14, and leads 36 at two ends of the magnetic coil 16 penetrate through the driving shell 37 to be connected with the driving power supply 17. The driving switch comprises an automatic driving switch 18 and a manual driving switch 19, the automatic driving switch 18 is arranged on a lead 36 at one end of the magnetic coil 16, and the manual driving switch 19 is connected on the lead 36 at one end of the magnetic coil 16 in parallel, so that the manual driving switch 19 is connected with the automatic driving switch 18 in parallel. The worker can manually operate the manual driving switch 19 to close and open the brake.
The drive finger includes a manual drive knob 20 and a locking member, both of which are disposed on the drive housing 37. The manual driving handle 20 is in a boomerang shape, one end of the manual driving handle 20 is hinged with the other end of the metal pull rod 14, the other end of the manual driving handle passes through the hinge through hole 9, and the manual driving handle 20 is hinged with the driving shell 37 at the hinge through hole 9. The other end arm of the manual driving handle 20 is fixedly provided with a ratchet bar 21. The locking piece includes locking seat, locking lever 23 and magnet piece 24, locking seat and magnet piece 24 all set up drive shell 37 is last, locking lever 23 sets up on the locking seat. The locking seat comprises a locking plate 22, the locking plate 22 is provided with two pieces, and the locking plate 22 is parallel to each other and fixedly arranged on the driving shell 37 on the upper side of the other end of the manual driving handle 20. The locking plate 22 is fixedly provided with a locking shaft, the locking shaft is sleeved with a locking tube 25, the length of the locking rod 23 is smaller than that of the other end of the manual driving handle 20, one end of the locking handle is fixedly arranged on the locking tube 25, and the length of the locking rod 23 is larger than the vertical distance from the locking tube 25 to the manual driving handle 20.
When the quick breaking breaker mechanism is not required to be manually opened or closed by the driving hand piece, the other end of the locking rod 23 is adsorbed on the magnet block 24, so that the other end of the locking rod 23 is prevented from being embedded into the ratchet bar, and the automatic closing and opening of the quick breaking breaker mechanism are prevented from being influenced.
The conductive part comprises a dynamic conductive part and a static conductive part, the dynamic conductive part is arranged on the pull rod, and the static conductive part is arranged on the arc extinguishing shell. The dynamic conductive piece comprises a conductive sliding piece, a dynamic conductive rod 26 and a dynamic conductive contact 27, the conductive sliding piece is arranged on the insulating pull rod 15, the dynamic conductive rod 26 is arranged on the conductive sliding piece, and the dynamic conductive contact 27 is arranged on the dynamic conductive rod 26.
The conductive sliding part comprises a conductive sliding tube 28 and a stress plate 29, wherein the conductive sliding tube 28 is arranged on the insulating pull rod 15, and the stress plate 29 is arranged on the conductive sliding tube 28. The conductive sliding tubes 28 are tubular, three conductive sliding tubes 28 are provided, the conductive sliding tubes 28 are uniformly distributed and sleeved on the insulating pull rod 15, and the conductive sliding tubes 28 are located between the buffer spring 12 and the pull plate 11. The stress plate 29 is plate-shaped, the stress plate 29 is provided with three, the stress plate 29 center is provided with the fixed through hole of atress, the stress plate 29 passes through the fixed through hole of atress corresponds fixed cover dress one by one on the electrically conductive sliding tube 28 is served, and the stress plate 29 with buffer spring 12 contacts, simultaneously stress plate 29 is less than to resistance plate 10 interval buffer spring 12 free length.
The movable conducting rods 26 are copper conducting rods, the movable conducting rods 26 are right-angled, the number of the movable conducting rods 26 is three, and the movable conducting rods 26 are vertically and fixedly arranged on the conductive sliding tubes 28 one by one correspondingly. The movable conducting rod 26 is provided with a temperature sensor 30, and the temperature sensor 30 is electrically connected with the automatic driving switch 18. The temperature sensor 30 can monitor the temperature of the movable conducting rod 26 in real time, when the circuit has faults such as short circuit, overload and the like, the temperature of the movable conducting rod 26 is increased, and when the temperature monitored by the temperature sensor 30 exceeds a set temperature, the automatic driving switch 18 is controlled to be closed. The movable conductive contact 27 is a copper contact, the movable conductive contact 27 is rectangular, and the sectional dimension of the movable conductive contact 27 is larger than that of the movable conductive rod 26. The number of the movable conductive contacts 27 is six, and the movable conductive contacts 27 are uniformly distributed and fixedly arranged on the end points of the movable conductive rod 26.
The static conductive parts comprise a first fracture static conductive part and a second fracture static conductive part, and the first fracture static conductive part and the second fracture static conductive part are both arranged on the arc extinguishing shell. The first fracture static conductive piece comprises a first static conductive rod 31 and three first static conductive contacts 32, wherein the first static conductive rod 31 is arranged on the arc extinguishing shell, the first static conductive contacts 32 are arranged on the first static conductive rod 31, and the first static conductive rods 31 are correspondingly embedded in the first static conductive through holes one by one. The first static conductive contact 32 is a copper contact, the first static conductive contact 32 is rectangular, the cross-sectional dimension of the first static conductive contact 32 is larger than that of the first static conductive rod 31, the number of the first static conductive contacts 32 is three, the first static conductive contact 32 is fixedly arranged at one end of the first static conductive rod 31 one by one, the first static conductive contact 32 is located in the arc extinguishing shell, the distance from the first static conductive contact 32 to the bottom of the arc extinguishing shell groove is the same as that from the movable conductive contact 27 to the bottom of the arc extinguishing shell groove at one end of the movable conductive rod 26, and the distance from the first static conductive contact 32 to the side wall of the arc extinguishing shell is the same as that from the movable conductive contact 27 to the side wall of the arc extinguishing shell at one end of the movable conductive rod 26. When moving along the pull rod, the movable conductive contact 27 can be closed with the first static conductive contact 32, and then the quick-breaking circuit breaker mechanism is switched on.
The second fracture static conductive piece comprises a second static conductive rod 33 and three second static conductive contacts 34, the second static conductive rod 33 is arranged on the arc extinguishing shell, the second static conductive contacts 34 are arranged on the second static conductive rod 33, and the second static conductive rods 33 are correspondingly embedded in the second static conductive through holes one by one. The second static conductive contacts 34 are copper contacts, the second static conductive contacts 34 are rectangular blocks, the cross-sectional dimension of the second static conductive contacts 34 is larger than that of the second static conductive rod 33, three second static conductive contacts 34 are arranged, the second static conductive contacts 34 are fixedly arranged at one end of the second static conductive rod 33 one by one, the second static conductive contacts 34 are located in the arc extinguishing shell, the distance from the second static conductive contacts 34 to the bottom of the arc extinguishing shell is the same as that from the movable conductive contacts 27 to the bottom of the arc extinguishing shell at the other end of the movable conductive rod 26, and the distance from the second static conductive contacts 34 to the side wall of the arc extinguishing shell is the same as that from the movable conductive contacts 27 to the side wall of the arc extinguishing shell at the other end of the movable conductive rod 26. When moving along the pull rod, the movable conductive contact 27 can be closed with the second static conductive contact 34, and then the switching-on of the quick-breaking circuit breaker mechanism is completed. The other end of the first static conducting rod 31 and the other end of the second static conducting rod 33 are sleeved with an insulating porcelain bottle 35.
When a short circuit and an overload fault occur in a circuit, the temperature of the movable conducting rod 26 will rise, when the temperature sensor 30 monitors that the temperature exceeds a set temperature, the automatic driving switch 18 will be controlled to be closed, the magnetic coil 16 will generate magnetic force to pull the pull rod to the rear side, the pull rod will drive the conducting sliding tube 28 to move to the rear side through the pull plate 11, and then the movable conducting contact 27 is disconnected from the first static conducting contact 32 and the second static conducting contact 34, so as to realize the automatic opening of the quick-opening circuit breaker mechanism;
when the quick-breaking circuit breaker mechanism fails and cannot be automatically opened, a worker can manually operate the manual driving switch 19 to close, so that the magnetic coil 16 is electrified to open the quick-breaking circuit breaker mechanism;
when the automatic driving switch 18 and the manual driving switch 19 are switched off, the closing spring 13 will push the pull rod to move forward through the resistance plate 10, the pull rod will push the conductive sliding tube 28 to move backward through the buffer spring 12, and the conductive sliding tube 28 will make the movable conductive contact 27 close with the first stationary conductive contact 32 and the second stationary conductive contact 34 through the movable conductive rod 26, respectively, so as to realize the automatic closing of the fast-breaking circuit breaker mechanism;
when the quick breaking breaker mechanism fails to automatically break the brake and the magnetic coil 16 cannot be electrified, a worker can push the other end of the manual driving handle 20 to move the pull rod to the rear side, so that the quick breaking breaker mechanism is broken, and the other end of the locking rod 23 is embedded into the ratchet bar 21 to prevent the quick breaking breaker mechanism from being accidentally switched on during maintenance to cause electric shock injury and death of maintenance personnel.
The invention has the following beneficial technical effects:
the circuit breaker mechanism capable of quickly breaking is simple in structure, reasonable in structural design, high in maintenance efficiency, high in closing and opening speed, good in arc extinguishing performance and safe and reliable in operation.
The circuit breaker mechanism for rapid breaking is provided with a driving part, the driving part comprises a driving sliding part and a driving automatic part, the driving sliding part comprises a pull rod, a resistance plate 10, a pull plate 11, a buffer spring 12 and a closing spring 13, the driving automatic part comprises a magnetic coil 16, a driving power supply 17 and a driving switch, the driving switch can control the driving power supply 17 to electrify and cut off the magnetic coil 16, the magnetic coil 16 attracts the pull rod to move towards the rear side after being electrified, and therefore the circuit breaker mechanism for rapid breaking is automatically opened; the driving switch comprises an automatic driving switch 18 and a manual driving switch 19, the automatic driving switch 18 and the manual driving switch 19 are connected on a lead 36 at one end of the magnetic coil 16 in parallel, and when the automatic driving switch 18 fails, a worker can manually open or close the manual driving switch 19, so that the rapid-breaking circuit breaker mechanism is switched off, and the operation safety reliability and the switching-on and switching-off efficiency of the rapid-breaking circuit breaker mechanism are improved.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A circuit breaker mechanism for rapid disconnect, comprising:
a housing including an arc extinguishing case and a driving case (37), the driving case (37) being disposed on the arc extinguishing case;
the driving part is arranged on the driving shell (37) and comprises a driving sliding part, a driving automatic part and a driving manual part, the driving sliding part is arranged on the driving shell (37), and the driving automatic part and the driving manual part are arranged on the driving sliding part; the driving sliding part comprises a pull rod, a resistance plate (10), a pull plate (11), a buffer spring (12) and a closing spring (13), the pull rod is arranged on the arc extinguishing shell, and the resistance plate (10), the pull plate (11), the buffer spring (12) and the closing spring (13) are all arranged on the pull rod; the pull rod comprises a metal pull rod (14) and an insulating pull rod (15), the metal pull rod (14) is arranged on the arc extinguishing shell, and the insulating pull rod (15) is arranged on the metal pull rod (14);
the conductive part is arranged on the arc extinguishing shell and comprises a dynamic conductive part and a static conductive part, the dynamic conductive part is arranged on the pull rod, and the static conductive part is arranged on the arc extinguishing shell; the dynamic conductive piece comprises a conductive sliding piece, a dynamic conductive rod (26) and a dynamic conductive contact (27), the conductive sliding piece is arranged on the insulating pull rod (15), the dynamic conductive rod (26) is arranged on the conductive sliding piece, and the dynamic conductive contact (27) is arranged on the dynamic conductive rod (26); the static conductive parts comprise a first fracture static conductive part and a second fracture static conductive part, and the first fracture static conductive part and the second fracture static conductive part are both arranged on the arc extinguishing shell; the driving sliding part drives the conductive sliding part and the movable conductive rod (26) to slide along the pull rod, so that the movable conductive contact (27) is respectively closed or opened with the first fracture static conductive part and the second fracture static conductive part.
2. A quick disconnect circuit breaker mechanism according to claim 1, wherein the arc chute housing comprises an arc chute (1) and an arc chute cover (2), the arc chute cover (2) being disposed on the arc chute (1); the arc extinguishing groove (1) is in a rectangular groove shape, end face baffles (3) are arranged on two end faces of the arc extinguishing groove (1), the end face baffles (3) can completely seal the two end faces of the arc extinguishing groove (1), a sliding through hole is formed in the end face baffle (3) at one end, and an arc extinguishing sliding tube (4) is fixedly embedded in the sliding through hole; the arc extinguishing shell is characterized in that first static guide through holes are formed in the bottom of the arc extinguishing shell groove, the number of the first static guide through holes is three, and the first static guide through holes are uniformly distributed along the longitudinal direction; the side wall of the arc extinguishing shell is provided with three second static guide through holes, and the second static guide through holes are uniformly distributed along the longitudinal direction; a plurality of threaded holes are uniformly distributed on the notch of the arc extinguishing groove (1).
3. A quick disconnect circuit breaker mechanism according to claim 1 or 2, wherein the arc extinguishing cover (2) is rectangular in shape, the arc extinguishing cover (2) being provided with vacuum extraction through holes, arc extinguishing fixation through holes and observation holes; a vacuum extraction pipe (5) is embedded in the vacuum extraction through hole, and a vacuum gate valve (6) is arranged on the vacuum extraction pipe (5); a plurality of arc extinguishing fixing through holes are uniformly distributed on the arc extinguishing cover (2), fastening screws (7) are embedded in the arc extinguishing fixing through holes, the arc extinguishing cover (2) is tightly attached to the notch of the arc extinguishing groove (1) through the fastening screws (7), and a sealing gasket is arranged between the arc extinguishing cover (2) and the arc extinguishing groove (1); the observation hole is provided with a plurality of, all fix the dress in the observation hole and be equipped with observation transparent plate (8).
4. A quick disconnect circuit breaker mechanism according to claim 2, wherein the driving case (37) is box-shaped, the opening of the driving case (37) is fixedly disposed on the end face shield (3) at one end of the arc extinguishing case, the arc extinguishing sliding tube (4) is disposed in the opening of the driving case (37), and a hinge through hole (9) is disposed on a side surface of the driving case (37).
5. A quick disconnect circuit breaker mechanism according to claim 4, wherein the metal tie bar (14) is embedded within the arc extinguishing sliding tube (4) and the metal tie bar (14) is in reciprocating sliding sealing connection with the arc extinguishing sliding tube (4); the insulating pull rod (15) is a square rod, and the length of the insulating pull rod (15) is smaller than that of the arc extinguishing shell; the insulating pull rod (15) is arranged on the metal pull rod (14), one end of the insulating pull rod (15) is fixedly connected with one end of the metal pull rod (14), and the axis of the insulating pull rod (15) is coincided with the axis of the metal pull rod (14).
6. The circuit breaker mechanism for rapid breaking according to claim 5, wherein the resistance plate (10) is plate-shaped, the resistance plate (10) is provided with three resistance fixing through holes, and the resistance plate (10) is uniformly distributed and fixedly sleeved on the insulating pull rod (15) through the resistance fixing through holes; the pulling plates (11) are plate-shaped, pulling fixing through holes are formed in the pulling plates (11), three pulling plates (11) are arranged, and the pulling plates (11) are uniformly distributed, fixedly sleeved and arranged on the insulating pull rod (15) through the pulling fixing through holes;
the buffer springs (12) are pressure springs, the number of the buffer springs (12) is three, the buffer springs (12) are uniformly distributed and sleeved on the insulating pull rod (15), and the buffer springs (12) are located between the resistance plate (10) and the pull plate (11); the closing spring (13) is a pressure spring, the inner diameter of the closing spring (13) is not smaller than that of the buffer spring (12), the closing spring (13) is sleeved on one end of the insulating pull rod (15), and the closing spring (13) is located between the end face baffle (3) and the resistance plate (10) on the last side of one end.
7. A quick disconnect circuit breaker mechanism according to claim 5, wherein said drive robot comprises a magnetic coil (16), a drive power source (17), and a drive switch, said magnetic coil (16) being disposed on said metal tie bar (14), said drive switch being disposed on said magnetic coil (16), said drive power source (17) being electrically connected to said magnetic coil (16); the inner diameter of the magnetic coil (16) is larger than the diameter of the metal pull rod (14), the magnetic coil (16) is sleeved on the other end of the metal pull rod (14), and leads (36) at two ends of the magnetic coil (16) penetrate through the driving shell (37) to be connected with the driving power supply (17); the driving switch comprises an automatic driving switch (18) and a manual driving switch (19), the automatic driving switch (18) is arranged on a lead (36) at one end of the magnetic coil (16), the manual driving switch (19) is connected on the lead (36) at one end of the magnetic coil (16) in parallel, and the manual driving switch (19) is connected with the automatic driving switch (18) in parallel.
8. A quick disconnect circuit breaker mechanism according to claim 5 wherein the drive hand piece includes a manual drive handle (20) and a locking piece, both the manual drive handle (20) and the locking piece being disposed on the drive housing (37); the manual driving handle (20) is in a boomerang shape, one end of the manual driving handle (20) is hinged with the other end of the metal pull rod (14), the other end of the manual driving handle penetrates through the hinge through hole (9), and the manual driving handle (20) is hinged with the driving shell (37) at the hinge through hole (9); a ratchet bar (21) is fixedly arranged on the other end arm of the manual driving handle (20);
the locking piece comprises a locking seat, a locking rod (23) and a magnet block (24), wherein the locking seat and the magnet block (24) are arranged on the driving shell (37), and the locking rod (23) is arranged on the locking seat; the locking seat comprises a locking plate (22), the locking plate (22) is provided with a plurality of locking plates, and the locking plates (22) are mutually parallel and fixedly arranged on the driving shell (37) on the upper side of the other end of the manual driving handle (20); the locking device is characterized in that a locking shaft is fixedly arranged on the locking plate (22), a locking pipe (25) is sleeved on the locking shaft, the length of the locking rod (23) is smaller than that of the other end of the manual driving handle (20), one end of the locking handle is fixedly arranged on the locking pipe (25), and the length of the locking rod (23) is larger than the vertical distance from the locking pipe (25) to the manual driving handle (20).
9. A quick disconnect circuit breaker mechanism according to claim 1 or 2, wherein the conductive slide comprises a conductive slide tube (28) and a force plate (29), the conductive slide tube (28) being disposed on the insulating tie (15) and the force plate (29) being disposed on the conductive slide tube (28); the conductive sliding tubes (28) are tubular, three conductive sliding tubes (28) are arranged, the conductive sliding tubes (28) are uniformly distributed and sleeved on the insulating pull rod (15), and the conductive sliding tubes (28) are located between the buffer spring (12) and the pull plate (11); the stress plate (29) is plate-shaped, three stress plates (29) are arranged, stress fixing through holes are formed in the stress plate (29), the stress plate (29) is fixedly sleeved on one end of the conductive sliding pipe (28) through the stress fixing through holes one by one, the stress plate (29) is in contact with the buffer spring (12), and meanwhile, the distance between the stress plate (29) and the resistance plate (10) is smaller than the free length of the buffer spring (12);
the movable conducting rods (26) are copper conducting rods, the movable conducting rods (26) are right-angled, three movable conducting rods (26) are arranged, and the movable conducting rods (26) are vertically and fixedly arranged on the conductive sliding tube (28) one by one correspondingly; a temperature sensor (30) is arranged on the movable conducting rod (26), and the temperature sensor (30) is electrically connected with the automatic driving switch (18); move conductive contact (27) and be copper contact, it is provided with six to move conductive contact (27), it is fixed to move conductive contact (27) evenly distributed and set up move on conductive pole (26) endpoint.
10. A quick disconnect circuit breaker mechanism according to claim 9, wherein the first fracture static conductive member includes first static conductive rods (31) and first static conductive contacts (32), the first static conductive rods (31) are disposed on the arc extinguishing chamber, the first static conductive contacts (32) are disposed on the first static conductive rods (31), the number of the first static conductive rods (31) is three, and the first static conductive rods (31) are respectively and correspondingly embedded in the first static conductive through holes one by one; the first static conductive contacts (32) are copper contacts, three first static conductive contacts (32) are arranged, the first static conductive contacts (32) are fixedly arranged at one end of the first static conductive rod (31) one by one correspondingly, the first static conductive contacts (32) are positioned in the arc extinguishing shell, the distance from the first static conductive contacts (32) to the bottom of the arc extinguishing shell groove is the same as the distance from the movable conductive contact (27) at one end of the movable conductive rod (26) to the bottom of the arc extinguishing shell groove, and the distance from the first static conductive contacts (32) to the side wall of the arc extinguishing shell is the same as the distance from the movable conductive contact (27) at one end of the movable conductive rod (26) to the side wall of the arc extinguishing shell;
the second fracture static conductive piece comprises second static conductive rods (33) and second static conductive contacts (34), the second static conductive rods (33) are arranged on the arc extinguishing shell, the second static conductive contacts (34) are arranged on the second static conductive rods (33), the number of the second static conductive rods (33) is three, and the second static conductive rods (33) are correspondingly embedded in the second static conductive through holes one by one; the second static conductive contact (34) is a copper contact, the second static conductive contact (34) is three, the second static conductive contact (34) corresponds one by one and is fixedly arranged on one end of the second static conductive rod (33), the second static conductive contact (34) is positioned in the arc extinguishing shell, meanwhile, the second static conductive contact (34) is arranged between the bottom of the arc extinguishing shell and the bottom of the arc extinguishing shell groove, the movable conductive contact (27) is arranged at the other end of the movable conductive rod (26) and is arranged between the bottom of the arc extinguishing shell groove, and the second static conductive contact (34) is arranged between the side wall of the arc extinguishing shell and the movable conductive contact (27) is arranged at the other end of the movable conductive rod (26) and is arranged between the side wall of the arc extinguishing shell.
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| CN202010414400.2A CN111554543B (en) | 2020-05-15 | 2020-05-15 | Quick disconnected circuit breaker mechanism |
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| CN202010414400.2A CN111554543B (en) | 2020-05-15 | 2020-05-15 | Quick disconnected circuit breaker mechanism |
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| CN111554543B CN111554543B (en) | 2022-06-24 |
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| CN114203481A (en) * | 2022-02-16 | 2022-03-18 | 晟望电气有限公司 | On-column vacuum circuit breaker |
| CN115483059A (en) * | 2022-10-21 | 2022-12-16 | 北京北开中电电气设备有限公司 | A closed double-column vertical open outdoor high-voltage AC isolating switch |
| CN118919371A (en) * | 2024-08-28 | 2024-11-08 | 六安元戎廷机电科技有限公司 | Circuit breaker |
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| CN111554543B (en) | 2022-06-24 |
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Denomination of invention: A Circuit Breaker Mechanism with Fast Breaking Effective date of registration: 20221221 Granted publication date: 20220624 Pledgee: Zhenjiang Branch of Zheshang Bank Co.,Ltd. Pledgor: DAHANG YOUNENG ELECTRICAL CO.,LTD. Registration number: Y2022980028505 |
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