CN109586266B - Safe and efficient high-voltage current limiting device for electrical equipment - Google Patents
Safe and efficient high-voltage current limiting device for electrical equipment Download PDFInfo
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- CN109586266B CN109586266B CN201811560456.8A CN201811560456A CN109586266B CN 109586266 B CN109586266 B CN 109586266B CN 201811560456 A CN201811560456 A CN 201811560456A CN 109586266 B CN109586266 B CN 109586266B
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- 230000000670 limiting effect Effects 0.000 title claims abstract description 28
- 238000002955 isolation Methods 0.000 claims abstract description 47
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 44
- 239000011787 zinc oxide Substances 0.000 claims description 22
- 239000000919 ceramic Substances 0.000 claims description 14
- 239000004593 Epoxy Substances 0.000 claims description 13
- 241000237983 Trochidae Species 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 235000014676 Phragmites communis Nutrition 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 239000012634 fragment Substances 0.000 claims 2
- 239000002131 composite material Substances 0.000 claims 1
- 230000002829 reductive effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
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Abstract
The invention discloses a safe and efficient high-voltage current limiting device for electrical equipment, and belongs to the technical field of current limiting devices. A safe and efficient high-voltage current limiting device for electrical equipment comprises a power distribution cabinet and an integrated circuit board, wherein the lower end of the power distribution cabinet is fixedly connected with a power inlet wire and a power outlet wire, the integrated circuit board is fixedly installed inside the power distribution cabinet, the power outlet wire and the power outlet wire are electrically connected with the integrated circuit board, the upper end of the integrated circuit board is fixedly provided with a state indicating lamp, whether a circuit of the electrical equipment is in a normal working state or not can be visually observed through the state indicating lamp, a first isolation switch, a second isolation switch and a third isolation switch are arranged below the state indicating lamp, and the first isolation switch, the second isolation switch and the third isolation switch are fixedly connected with the integrated circuit board; the invention effectively solves the problems that the existing design is connected in series in a circuit to generate huge reactive loss and the power line cannot be overhauled under the condition of no power interruption.
Description
Technical Field
The invention relates to the technical field of current limiting devices, in particular to a safe and efficient high-voltage current limiting device for electrical equipment.
Background
With the development of economy, the rapid increase of electric load and the increase of power grid capacity, the impact of the continuously increased short-circuit current on electric equipment of the power system is larger and larger; meanwhile, the existing circuit breaker is difficult to cut off huge short-circuit current. Therefore, in order to solve this problem, the current limiting device is widely used in the power transmission and distribution system of the power system in a serial circuit manner, and meanwhile, a high-voltage current limiting device of the electrical equipment is also generated.
When existing high-voltage current limiting devices of electrical equipment on the market are connected in series in a loop, although the intensity of short-circuit current can be limited and the impact of the short-circuit current on the electrical equipment is reduced, huge reactive loss generated in the loop in which the high-voltage current limiting devices are connected in series also causes great economic burden to users; in addition, many electrical devices on the market cannot be powered off, so that huge economic loss and even confusion can be caused once the electrical devices are powered off, and the problem that the existing high-voltage current limiting devices on the market cannot solve is solved.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to provide a safe and efficient high-voltage current limiting device for electrical equipment, which aims to solve the problems in the background technology:
(1) the problem of huge reactive loss can be generated when the existing design is connected in series in a circuit;
(2) the problem that the existing design can not be used for overhauling a power line under the condition of no power failure.
2. Technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
a safe and efficient high-voltage current limiting device for electrical equipment comprises a power distribution cabinet and an integrated circuit board, wherein the lower end of the power distribution cabinet is fixedly connected with a power inlet wire and a power outlet wire, the integrated circuit board is fixedly arranged in the power distribution cabinet, the power outlet wire and the power outlet wire are electrically connected with the integrated circuit board, the upper end of the integrated circuit board is fixedly provided with a state indicating lamp, whether a circuit of the electrical equipment is in a normal working state or not can be visually observed through the state indicating lamp, a first isolation knife switch, a second isolation knife switch and a third isolation knife switch are arranged below the state indicating lamp, the first isolation knife switch, the second isolation knife switch and the third isolation knife switch are fixedly connected with the integrated circuit board, a conductive support is also fixedly connected with the integrated circuit board, and a high-voltage quick-break fuse wire, a zinc oxide current limiting rod and a discharge resistor are fixedly connected with the conductive, the vacuum eddy current switch is fixedly arranged on the inner bottom surface of the power distribution cabinet through the mounting seat; when the high-voltage quick-break fuse wire is used, when a short circuit occurs in a circuit, the high-voltage quick-break fuse wire generates arc pressure to switch on the zinc oxide current-limiting rod, the zinc oxide current-limiting rod generates a larger impedance after being switched on, the intensity of short-circuit current can be effectively limited, the damage of the short-circuit fault to electrical equipment in a power system is greatly reduced, a state indicator lamp is lightened, and simultaneously, a controller of the vacuum eddy current switch immediately switches on after sensing the short circuit, the zinc oxide current-limiting rod is in short circuit, so that the zinc oxide current-limiting rod is prevented from generating huge reactive loss in a circuit after being connected for a long time, unnecessary loss is avoided, and the normal work of the device body is ensured; after the short-circuit fault occurs to the circuit, a user can open the first isolation knife switch and the second isolation knife switch, close the third isolation knife switch and start the standby circuit, so that the circuit fault can be maintained without influencing the normal operation of the electrical equipment.
Preferably, the vacuum eddy current switch comprises an epoxy resin pole, the inner wall of the epoxy resin pole is fixedly connected with a shielding plate, a vacuum arc extinguish chamber is arranged below the shielding plate, a corrugated pipe is fixedly connected on the shielding plate, the interior of the corrugated pipe is movably connected with a movable electric guide rod, the bottom end of the movable electric guide rod is fixedly connected with a movable contact, a fixed electric guide rod is arranged below the movable contact, the fixed electric guide rod is fixedly connected with the bottom end of the epoxy resin pole column, the top end of the fixed electric guide rod is fixedly connected with a fixed contact, a movable cover plate is arranged above the shielding plate, the bottom end of the epoxy resin pole column and the movable cover plate are respectively and fixedly connected with a lower wire outlet terminal and an upper wire outlet terminal, the vacuum arc-extinguishing chamber has excellent insulativity, and the effects of rapidly extinguishing arc and inhibiting current can be achieved after a circuit is formed.
Preferably, the movable cover plate top is provided with link gear, link gear one side is provided with actuating mechanism, link gear's top is provided with sealed lid, the inside of epoxy utmost point post still is provided with gaseous generating device, gaseous generating device and movable cover plate upper surface fixed connection, be provided with exhaust duct on the lateral wall of sealed lid, be provided with the gas vent on the top lateral wall of epoxy utmost point post, exhaust duct and gas vent phase-match, last fixedly connected with controller that goes back of gaseous generating device, the controller can be in sensing the abnormal current in the circuit and make the reaction rapidly, handle the short circuit condition.
Preferably, the link gear is including rotating the mobile jib and rotating vice pole, the bottom swing joint that rotates the mobile jib has the pole that seals, the inside screwed connection that rotates vice pole has the threaded rod, the upper end fixedly connected with torsional reed that rotates vice pole, the inside of threaded rod still is provided with the eddy current driver, and when the link gear had guaranteed that the circuit takes place the short circuit, the vacuum eddy current switch can make the reaction rapidly.
Preferably, the eddy current driver comprises an insulating pull rod, the insulating pull rod is movably mounted inside the threaded rod, the top end of the insulating pull rod is fixedly connected with the sealing cover, the bottom end of the insulating pull rod is fixedly connected with the contact spring, the contact spring is fixedly connected with the top end of the movable electric guide rod, and the contact spring of the eddy current driver is matched with the movable electric guide rod.
Preferably, actuating mechanism is including driving motor, fixedly connected with dwang on driving motor's the output shaft, fixed mounting has the clutch around the dwang, the top fixedly connected with runner of dwang, the winding is connected with the pulling force line on the runner, the one end and the torsional reed fixed connection of pulling force line, actuating mechanism can drive the link gear when the circuit takes place the short circuit and make corresponding reaction and processing.
Preferably, the controller comprises a shell, a limit column is fixedly connected to the shell, a lower terminal is fixedly mounted inside the shell, a guide hole and a lower contact end are arranged on the lower terminal, a ceramic thermistor is fixedly mounted above the lower terminal, a high-resistance elastic sheet is fixedly mounted above the ceramic thermistor, a top shell is fixedly connected to the top end of the shell, a curved elastic sheet is fixedly mounted inside the top shell, an upper terminal is fixedly connected to the side wall of the top shell, an upper contact end is arranged on the upper terminal, the controller senses short-circuit current, the high-resistance elastic sheet bends, the upper terminal is jacked up, a contact head is disconnected from the lower terminal, a circuit is disconnected, a torsion spring is loosened by a starting driving mechanism, a rotating auxiliary rod starts to rotate, and a threaded rod is driven to quickly rise, the speed that rises is relevant with the performance of torsional spring piece, and because the device is inside to keep high pressure, can produce a thrust insulating pull rod fast rising with higher speed, thereby it rises to drive the movable contact, thereby can put off arc and restraint electric current rapidly after making the well circuit short circuit through the good insulating nature in the vacuum arc extinguishing chamber, vacuum eddy current switch uses with the cooperation of discharge damper, after the circuit short circuit, can make current-voltage stable get off rapidly, under the prerequisite that protection electrical equipment is not impaired, guarantee that electrical equipment can continue to stabilize normal work.
3. Advantageous effects
(1) After the circuit is in short circuit, the high-voltage quick-break fuse wire is fused to generate arc voltage to enable the zinc oxide current-limiting rod to be conducted, the zinc oxide current-limiting rod generates a larger impedance after being conducted, the intensity of short-circuit current can be effectively limited, the damage of short-circuit fault to electrical equipment in a power system is greatly reduced, a fault lamp of a status indicator lamp is lighted, meanwhile, a controller of the vacuum eddy current switch senses that a high-resistance elastic sheet is bent after short circuit, so that an upper side terminal is jacked up, a contact head is disconnected with a lower side terminal, the circuit is disconnected, then a driving mechanism is started to release a torsion spring sheet to enable a rotating auxiliary rod to start rotating, so that a threaded rod is driven to start to quickly rise, the rising speed is related to the performance of the torsion spring sheet, and as the high voltage is kept in the device, a thrust force is generated to accelerate the, therefore, after the circuit is short-circuited, the arc can be rapidly extinguished and the current can be inhibited through the excellent insulativity in the vacuum arc extinguish chamber, the vacuum eddy current switch is matched with the discharge damper for use, after the circuit is short-circuited, the current and voltage can be rapidly stabilized, the electrical equipment can be ensured to continue to work stably and normally on the premise of protecting the electrical equipment from being damaged, meanwhile, the zinc oxide current limiting rod is short-circuited, and the problem that the zinc oxide current limiting rod is connected in the circuit for a long time to generate huge reactive loss to cause unnecessary loss is effectively solved by utilizing the design;
(2) after the circuit has short-circuit fault, a user can open the first isolation switch blade and the second isolation switch blade and close the third isolation switch blade to start the standby circuit, thereby ensuring that the circuit fault can be overhauled under the condition of not influencing the normal operation of electrical equipment, and after the circuit fault is eliminated, when the current is detected to be recovered to be normal, the temperature of the ceramic thermistor in the controller is increased, thereby increasing the temperature of the high-resistance elastic piece on the ceramic thermistor, the high-resistance elastic piece is heated to be quickly deformed and generates the phenomenon of downward bending, thereby leading the contact head to descend to be contacted with the lower side terminal, leading the circuit to be recovered to be normal, leading the current to drive the torsion reset spring piece through the driving mechanism, driving the auxiliary rotating rod to start rotating, driving the threaded rod to descend, driving the insulating pull rod at the bottom to descend, and driving the movable contact head to descend to be contacted with, and when the ceramic thermistor is heated, the ceramic thermistor can provide a heating effect for the gas generating device, so that the generated gas keeps the internal high pressure, and the internal gas is protective gas, so that the corrosion damage of air to elements can be reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the circuit structure of the present invention;
FIG. 3 is a schematic cross-sectional view of a vacuum eddy current switch according to the present invention;
FIG. 4 is a schematic structural diagram of a linkage structure according to the present invention;
FIG. 5 is a schematic diagram of the construction of the eddy current drive of the present invention;
FIG. 6 is a schematic structural view of the driving mechanism of the present invention;
fig. 7 is a schematic structural diagram of the controller of the present invention.
The reference numbers in the figures illustrate:
1. a power distribution cabinet; 2. an incoming wire; 3. an electric lead is led out; 4. an integrated circuit board; 5. a status indicator light; 6. a first isolation blade; 7. a second isolation blade; 8. a third isolation switch; 9. a conductive support; 10. a high-voltage quick-break fuse; 11. a zinc oxide flow-limiting rod; 12. discharging an electric damper; 13. a vacuum eddy current switch; 14. a mounting seat; 15. an epoxy resin pole column; 16. a shielding plate; 17. a vacuum arc-extinguishing chamber; 18. a bellows; 19. a movable conductive rod; 20. a movable contact; 21. fixing the electric guide rod; 22. a fixed contact; 23. a removable cover plate; 24. a lower outlet terminal; 25. an upper outlet terminal; 26. a linkage mechanism; 27. a drive mechanism; 28. a sealing cover; 29. a gas generating device; 30. an exhaust duct; 31. an exhaust port; 32. rotating the main rod; 33. a rotating auxiliary rod; 34. sealing the rod; 35. a threaded rod; 36. a torsion spring piece; 37. an insulating pull rod; 38. a contact spring; 39. a drive motor; 40. rotating the rod; 41. a clutch; 42. a rotating wheel; 43. a tension line; 44. a housing; 45. a limiting column; 46. a lower terminal; 47. a guide hole; 48. a lower contact end; 49. a ceramic thermistor; 50. a high resistance spring; 51. a top shell; 52. a curved spring plate; 53. an upper side terminal; 54. an upper contact end; 55. and a controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-2, a safe and efficient high-voltage current limiting device for electrical equipment comprises a power distribution cabinet 1 and an integrated circuit board 4, wherein the lower end of the power distribution cabinet 1 is fixedly connected with a power inlet lead 2 and a power outlet lead 3, the integrated circuit board 4 is fixedly installed inside the power distribution cabinet 1, the power lead 2 and the power outlet lead 3 are electrically connected with the integrated circuit board 4, the upper end of the integrated circuit board 4 is fixedly installed with a status indicator lamp 5, a first isolation knife switch 6, a second isolation knife switch 7 and a third isolation knife switch 8 are arranged below the status indicator lamp 5, the first isolation knife switch 6, the second isolation knife switch 7 and the third isolation knife switch 8 are fixedly connected with the integrated circuit board 4, the integrated circuit board 4 is also fixedly connected with a conductive bracket 9, the conductive bracket 9 is fixedly connected with a high-voltage quick-break fuse 10, a zinc oxide current limiting rod 11 and a discharge damper 12, the lower end of the power, the bottom end of the vacuum eddy current switch 13 is fixedly connected with a mounting seat 14, and the vacuum eddy current switch 13 is fixedly mounted on the inner bottom surface of the power distribution cabinet 1 through the mounting seat 14; zinc oxide current-limiting rod 11, first isolation plug-in strip 6 and second isolation plug-in strip 7 establish ties between advancing electric wire 2 and play electric wire 3 through integrated circuit board 4, high-pressure quick-break fuse 10 connects in parallel at zinc oxide current-limiting rod 11 both ends through integrated circuit board 4, parallelly connected at zinc oxide current-limiting rod 11 both ends after discharge damper 12 establishes ties with vacuum eddy current switch 13, third isolation plug-in strip 8 passes through integrated circuit board 4 one end electric connection at the power input end of first isolation plug-in strip 6, the power output end at second isolation plug-in strip 7 is connected to the other end electric connection.
When the device is used, when a short circuit condition occurs in a circuit, the high-voltage quick-break fuse wire 10 is fused to generate arc voltage to conduct the zinc oxide current-limiting rod 11, the zinc oxide current-limiting rod 11 generates a large impedance after being conducted, the intensity of short-circuit current can be effectively limited, the damage of short-circuit fault to electrical equipment in an electric power system is greatly reduced, the fault lamp of the status indicator lamp 5 is lighted, meanwhile, the controller 55 of the vacuum eddy switch 13 senses the short circuit and then immediately switches on, the zinc oxide current-limiting rod 11 is in short circuit, the phenomenon that the zinc oxide current-limiting rod 11 is connected in the circuit for a long time to generate huge reactive loss, so that unnecessary loss is caused, and the normal work of the device body; after the short-circuit fault occurs in the circuit, a user can open the first isolation switch blade 6 and the second isolation switch blade 7, close the third isolation switch blade 8 and start the standby circuit, so that the circuit fault can be maintained without influencing the normal operation of electrical equipment.
Example 2:
referring to fig. 3-6, the difference between the embodiment 1 and the vacuum eddy current switch 13 includes an epoxy post 15, a shielding plate 16 is fixedly connected to an inner wall of the epoxy post 15, a vacuum arc-extinguishing chamber 17 is disposed below the shielding plate 16, a corrugated tube 18 is further fixedly connected to the shielding plate 16, a movable electrical guide rod 19 is movably connected to an inside of the corrugated tube 18, a movable contact 20 is fixedly connected to a bottom end of the movable electrical guide rod 19, a fixed electrical guide rod 21 is disposed below the movable contact 20, the fixed electrical guide rod 21 is fixedly connected to a bottom end of the epoxy post 15, a fixed contact 22 is fixedly connected to a top end of the fixed electrical guide rod 21, a movable cover plate 23 is further disposed above the shielding plate 16, and a lower outlet terminal 24 and an upper outlet terminal 25 are respectively and fixedly connected to a bottom end of the epoxy post 15 and the movable cover.
A linkage mechanism 26 is arranged above the movable cover plate 23, a driving mechanism 27 is arranged on one side of the linkage mechanism 26, a sealing cover 28 is arranged on the top end of the linkage mechanism 26, a gas generating device 29 is further arranged inside the epoxy resin pole 15, the gas generating device 29 is fixedly connected with the upper surface of the movable cover plate 23, an exhaust pipeline 30 is arranged on the side wall of the sealing cover 28, an exhaust port 31 is formed in the side wall of the top end of the epoxy resin pole 15, the exhaust pipeline 30 is matched with the exhaust port 31, and a controller 55 is fixedly connected to the gas generating device 29.
The linkage mechanism 26 comprises a rotating main rod 32 and a rotating auxiliary rod 33, the bottom of the rotating main rod 32 is movably connected with a sealing rod 34, the inside of the rotating auxiliary rod 33 is spirally connected with a threaded rod 35, the upper end of the rotating auxiliary rod 33 is fixedly connected with a torsion spring piece 36, and an eddy current driver is further arranged inside the threaded rod 35.
The eddy current driver comprises an insulating pull rod 37, the insulating pull rod 37 is movably mounted inside the threaded rod 35, the top end of the insulating pull rod 37 is fixedly connected with the sealing cover 28, the bottom end of the insulating pull rod 37 is fixedly connected with a contact spring 38, and the contact spring 38 is fixedly connected with the top end of the movable electric guide rod 19.
The driving mechanism 27 comprises a driving motor 39, a rotating rod 40 is fixedly connected to an output shaft of the driving motor 39, a clutch 41 is fixedly installed around the rotating rod 40, a rotating wheel 42 is fixedly connected to the top end of the rotating rod 40, a tension line 43 is wound on the rotating wheel 42, and one end of the tension line 43 is fixedly connected with the torsion spring piece 36.
When the device is used, the controller 55 senses abnormal current and transmits a signal to the driving structure 27, the driving motor 39 is started to loosen the torsion spring piece 36 to enable the auxiliary rotating rod 33 to start rotating, so that the threaded rod 35 is driven to start to rise rapidly, the rising speed is related to the performance of the torsion spring piece 36, and because the device is internally kept at high voltage, thrust is generated to accelerate the insulating pull rod 37 to rise rapidly, so that the movable contact 20 is driven to rise, so that the circuit can be quenched rapidly and current is inhibited after short circuit through excellent insulation in the vacuum arc-extinguishing chamber 17, and after circuit faults are eliminated, the current is detected to be recovered to be normal, the current drives the torsion spring piece 36 to reset through the driving motor 39, the auxiliary rotating rod 33 is driven to start rotating, so that the threaded rod 35 is driven to fall, the insulating pull rod 37 at the bottom is driven to fall, and, when the temperature of the ceramic thermistor 49 is raised, the gas generator 29 is heated to generate gas to maintain high internal pressure, and the internal gas is protective gas, so that the corrosion damage of air to elements can be reduced.
Example 3:
referring to fig. 7, the difference between the embodiment 2 and the above embodiment is that the controller 55 includes a housing 44, a position-limiting post 45 is fixedly connected to the housing 44, a lower terminal 46 is fixedly mounted inside the housing 44, a guide hole 47 and a lower contact end 48 are provided on the lower terminal 46, a ceramic thermistor 49 is fixedly mounted above the lower terminal 46, a high-resistance elastic sheet 50 is fixedly mounted above the ceramic thermistor 49, a top shell 51 is fixedly connected to the top end of the housing 44, a curved elastic sheet 52 is fixedly mounted inside the top shell 51, an upper terminal 53 is also fixedly connected to the side wall of the top shell 51, and an upper contact end 54 is provided on the upper terminal 53.
When the high-resistance elastic sheet 50 is used, the controller 55 senses abnormal current generated when a circuit is short-circuited, the high-resistance elastic sheet 50 is bent, the upper terminal 53 is jacked up, the contact end is disconnected with the lower terminal 46, and the circuit is disconnected; after the fault processing is completed, the ceramic thermistor 49 in the controller 55 is heated, so that the high-resistance elastic sheet 50 on the ceramic thermistor is heated, the high-resistance elastic sheet 50 is heated and quickly deformed, a downward bending phenomenon occurs, the contact head is lowered to be in contact with the lower terminal 46, and the circuit is recovered to be normal.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a safe efficient electrical equipment high voltage current limiting device, includes switch board (1) and collection circuit board (4), its characterized in that: the lower end of the power distribution cabinet (1) is fixedly connected with a power inlet wire (2) and a power outlet wire (3), the integrated circuit board (4) is fixedly installed inside the power distribution cabinet (1), the power outlet wire (3) and the power inlet wire (2) are electrically connected with the integrated circuit board (4), the upper end of the integrated circuit board (4) is fixedly provided with a status indicator lamp (5), a first isolation knife switch (6), a second isolation knife switch (7) and a third isolation knife switch (8) are arranged below the status indicator lamp (5), the first isolation knife switch (6), the second isolation knife switch (7) and the third isolation knife switch (8) are fixedly connected with the integrated circuit board (4), the integrated circuit board (4) is also fixedly connected with a conductive support (9), the conductive support (9) is fixedly connected with a high-pressure quick-break fuse (10), a zinc oxide current-limiting rod (11) and a discharge resistance damper (12), the vacuum eddy current switch (13) is arranged at the lower end of the power distribution cabinet (1), the bottom end of the vacuum eddy current switch (13) is fixedly connected with a mounting seat (14), and the vacuum eddy current switch (13) is fixedly mounted on the inner bottom surface of the power distribution cabinet (1) through the mounting seat (14); the zinc oxide current limiting rod (11), the first isolation switch blade (6) and the second isolation switch blade (7) are connected in series between the power inlet lead (2) and the power outlet lead (3) through the integrated circuit board (4), the high-voltage quick-break fuse (10) is connected in parallel at two ends of the zinc oxide current limiting rod (11) through the integrated circuit board (4), the discharge damper (12) is connected in series with the vacuum eddy current switch (13) and then connected in parallel at two ends of the zinc oxide current limiting rod (11), the third isolation switch blade (8) is electrically connected to the power inlet end of the first isolation switch blade (6) through one end of the integrated circuit board (4), and the other end of the third isolation switch blade is electrically connected to the power outlet end of the second isolation switch blade (7); vacuum eddy current switch (13) is including epoxy utmost point post (15), fixedly connected with shield plate (16) on the inner wall of epoxy utmost point post (15), the below of shield plate (16) is provided with vacuum interrupter (17), go back fixedly connected with bellows (18) on shield plate (16), bellows (18) inside swing joint has movable electric guide pole (19), bottom fixedly connected with movable contact (20) of movable electric guide pole (19), movable contact (20) below is provided with fixed electric guide pole (21), fixed electric guide pole (21) fixed connection is in the bottom of epoxy utmost point post (15), the top fixedly connected with fixed contact (22) of fixed electric guide pole (21), the top of shield plate (16) still is provided with movable cover plate (23), terminal outlet (24) and last terminal outlet under difference fixedly connected with on the bottom of epoxy utmost point post (15) and movable cover plate (23), outlet terminal (24) and last outlet end under epoxy utmost point post (23) are gone up to difference fixedly connected with A seed (25);
the utility model discloses a novel epoxy resin composite material sealing device, including removable cover (23), link gear (26), actuating mechanism (27), top of link gear (26) is provided with sealed lid (28), the inside of epoxy utmost point post (15) still is provided with gaseous generating device (29), fixed surface is connected on gaseous generating device (29) and removable cover (23), be provided with exhaust duct (30) on the lateral wall of sealed lid (28), be provided with gas vent (31) on the top lateral wall of epoxy utmost point post (15), exhaust duct (30) and gas vent (31) phase-match, go back fixedly connected with controller (55) on gaseous generating device (29).
2. A safe and efficient electrical equipment high voltage current limiting device according to claim 1, wherein: link gear (26) are including rotating mobile jib (32) and rotating vice pole (33), the bottom swing joint that rotates mobile jib (32) has seal pole (34), the inside screwed connection that rotates vice pole (33) has threaded rod (35), the upper end fixedly connected with of rotating vice pole (33) turns round reed (36), the inside of threaded rod (35) still is provided with the eddy current driver.
3. A safe and efficient electrical equipment high voltage current limiting device according to claim 2, wherein: the eddy current driver comprises an insulating pull rod (37), the insulating pull rod (37) is movably mounted inside a threaded rod (35), the top end of the insulating pull rod (37) is fixedly connected with a sealing cover (28), a bottom end of the insulating pull rod (37) is fixedly connected with a contact spring (38), and the contact spring (38) is fixedly connected with the top end of a movable electric guide rod (19).
4. A safe and efficient electrical equipment high voltage current limiting device according to claim 1, wherein: actuating mechanism (27) is including driving motor (39), fixedly connected with dwang (40) on the output shaft of driving motor (39), fixed mounting has clutch (41) around dwang (40), the top fixedly connected with runner (42) of dwang (40), the winding is connected with pull line (43) on runner (42), the one end and the torsional spring leaf (36) fixed connection of pull line (43).
5. A safe and efficient electrical equipment high voltage current limiting device according to claim 1, wherein: controller (55) is including casing (44), fixedly connected with spacing post (45) on casing (44), the inside fixed mounting of casing (44) has downside terminal (46), be provided with guiding hole (47) and lower contact end (48) on downside terminal (46), downside terminal (46) top fixed mounting has ceramic thermistor (49), ceramic thermistor (49) top fixed mounting has high resistance shell fragment (50), the top fixedly connected with top shell (51) of casing (44), the inside fixed mounting of top shell (51) has curved shell fragment (52), still fixedly connected with upside terminal (53) on the lateral wall of top shell (51), be provided with on upside terminal (53) and contact jaw (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560456.8A CN109586266B (en) | 2018-12-20 | 2018-12-20 | Safe and efficient high-voltage current limiting device for electrical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560456.8A CN109586266B (en) | 2018-12-20 | 2018-12-20 | Safe and efficient high-voltage current limiting device for electrical equipment |
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| Publication Number | Publication Date |
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| CN109586266A CN109586266A (en) | 2019-04-05 |
| CN109586266B true CN109586266B (en) | 2020-10-16 |
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| CN110187226A (en) * | 2019-06-28 | 2019-08-30 | 无锡宏广电容器有限公司 | Polypropylene film capacitor short circuit dischange device |
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| CN2274810Y (en) * | 1995-05-23 | 1998-02-18 | 地方国营象山高压电器厂 | Vacuum switch controlled with spring energy from manpower turning |
| CN201788887U (en) * | 2010-07-27 | 2011-04-06 | 国网电力科学研究院 | Direct-acting vacuum breaker equipped with bistable permanent-magnetic operating mechanism |
| FR3003078A1 (en) * | 2013-03-07 | 2014-09-12 | Alstom Technology Ltd | HV CIRCUIT BREAKER WITH END-TO-END ELECTRIC CONTACTS REGENERATION DEVICE |
| CN204130373U (en) * | 2014-10-11 | 2015-01-28 | 永康市威力园林机械有限公司 | A kind of two-way emergency button device for rotary cultivator |
| CN204242927U (en) * | 2014-10-22 | 2015-04-01 | 河南省三禾电气有限公司 | A kind of outdoor vacuum permanent magnet type vacuum circuit-breaker |
| CN206533122U (en) * | 2017-03-02 | 2017-09-29 | 安徽伊格瑞德电气设备有限公司 | A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR |
| CN207149470U (en) * | 2017-09-05 | 2018-03-27 | 库柏爱迪生(平顶山)电子科技有限公司 | A kind of pole of railway breaker |
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