CN111243886A - Arc extinguish chamber and circuit breaker thereof - Google Patents
Arc extinguish chamber and circuit breaker thereof Download PDFInfo
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- CN111243886A CN111243886A CN202010112430.8A CN202010112430A CN111243886A CN 111243886 A CN111243886 A CN 111243886A CN 202010112430 A CN202010112430 A CN 202010112430A CN 111243886 A CN111243886 A CN 111243886A
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- arc
- extinguishing grid
- extinguishing
- wall
- groove
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/342—Venting arrangements for arc chutes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
The invention discloses an arc extinguish chamber and a circuit breaker thereof, which comprise a head end lower arc isolating wall, a plurality of groups of middle end lower arc isolating walls and tail end lower arc isolating walls, wherein a plurality of heat insulation rings are embedded in a detachable arc extinguish grid piece in a clamping way, and heat absorption rings are fixedly arranged in inner rings of the heat insulation rings; one end of the exhaust channel, which leads to the outside, is gradually narrowed, and a one-way piece is fixedly arranged in the exhaust channel; the detachable arc extinguishing grid piece and the fixed arc extinguishing grid piece are provided with arc striking grooves and arc striking gaps, the gas generating plate is arranged below the thermosetting frame plate, and one side of the gas generating plate, which is far away from the thermosetting frame plate, is not in contact with the heat conducting plate. The arc extinguishing chamber is provided, the number of arc extinguishing grids can be freely assembled, the first grid which is firstly contacted with the electric arc is detachably arranged, the replacement after the damage is convenient, the structure of the arc extinguishing chamber is more durable, the service life of the device is effectively prolonged, the circuit breaker comprising the arc extinguishing chamber is further provided, the use is convenient, and the popularization is very worth.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to an arc extinguish chamber and a circuit breaker thereof.
Background
In the prior art, the application number "201711466252.3" breaker explosion chamber comprises a fixed plate and a plurality of arc-extinguishing grid sheets, wherein the fixed plate comprises a bottom plate and two symmetrical side plates arranged at two opposite ends of the bottom plate, a plurality of exhaust passages are uniformly distributed on the bottom plate along the length direction of the bottom plate, a plurality of groups of fixing mechanisms are uniformly distributed on the side plates along the length direction of the side plates, the exhaust passages and the fixing mechanisms are sequentially staggered, the fixing mechanisms comprise a plurality of fixing holes uniformly distributed along the width direction of the side plates, two opposite side ends of the arc-extinguishing grid sheets are respectively provided with a fixing right angle recessed inwards, a fixing block matched with the fixing holes is arranged at a position corresponding to the fixing holes on the fixing right angle, one end of the fixing block penetrates through the corresponding fixing holes, and the breaker explosion chamber is reasonable in structural design, the arc extinguishing device has the advantages of good impact resistance effect, good heat dissipation effect, effective improvement of arc extinguishing efficiency and effective improvement of the working stability of the circuit breaker during use.
However, the method still has the obvious defects in the using process: 1. the existing research shows that the more the number of arc-extinguishing grid pieces of arc cutting is, the higher the arc voltage is, the more the arc energy capable of extinguishing is, the better the breaking and electric service life performance is, but the cost can be increased by increasing the number of the arc-extinguishing grid pieces without limit, therefore, the number of the arc-extinguishing grid pieces is flexibly selected according to the actual situation, and the length of the side plate in the device is fixed, therefore, the number of the arc-extinguishing grid pieces is also constant, obviously, the application range is limited, and the free adjustment cannot be realized; 2. the arc is generated at the moment of opening, the first arc-extinguishing grid piece close to the static bus firstly contacts with the arc for a long time, the burning loss is more serious than that of the other arc-extinguishing grid pieces, the burning loss is easy to cause, and the service life is shortened; 3. the device is lack of gas generating materials and thermosetting materials, gas cannot be generated to accelerate the movement of the electric arc and improve the breaking performance, if a single gas generating material is placed in an arc extinguishing system, the temperature resistant grade of the device cannot meet the actual requirement, and the device is easy to deform and influence the performance of the product when being ablated at high temperature.
Disclosure of Invention
The present invention is directed to an arc chute and a circuit breaker thereof, which solve the problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
an arc extinguish chamber comprises a head end lower arc-insulating wall, and also comprises a plurality of groups of middle end lower arc-insulating walls and tail end lower arc-insulating walls, wherein a first mounting block is fixedly arranged on the head end lower arc-insulating wall, a first clamping groove and a first transverse threaded hole are formed in the first mounting block, the first clamping groove and the first transverse threaded hole are vertically crossed, a first convex rod is arranged on the side edge of the first mounting block, a first longitudinal threaded hole is formed in the first convex rod, one side, away from the head end lower arc-insulating wall, of the first mounting block is fixedly provided with a head end upper arc-insulating wall, a connecting part is inserted in the clamping groove, a threaded connecting groove is formed in the connecting part, head end fixing screws are arranged in the first transverse threaded hole and the threaded connecting groove in a penetrating manner, the connecting part is fixedly arranged on a detachable arc-extinguishing grid piece, a high-temperature-resistant coating is coated on the surface of the detachable arc-extinguishing grid piece, a heat absorption ring is fixedly arranged in the inner ring of the heat insulation ring, a through hole is formed in the center of the heat absorption ring, and the through hole penetrates through the detachable arc extinguishing grid plate;
a second mounting rod is fixedly arranged on the lower flash barrier at the middle end, one end of the second mounting rod is provided with a first groove and a second longitudinal threaded hole, the first groove is vertically crossed with the longitudinal threaded hole II, a connecting screw is arranged in the longitudinal threaded hole II in a threaded manner, a second convex rod is fixedly arranged at one end of the second mounting rod far away from the first groove, a third longitudinal threaded hole is formed in the second convex rod, the second mounting rod is provided with an exhaust channel, one end of the exhaust channel, which leads to the outside, is gradually narrowed, a one-way piece is fixedly arranged in the exhaust channel, a blocking part is arranged on the one-way piece, an upper arc-isolating wall at the middle end is fixedly arranged on one side of the second mounting rod away from the lower arc-isolating wall at the middle end, a plurality of groups of fixed arc-extinguishing grid plates insulated from each other are fixedly clamped and embedded on the second mounting rod, and the fixed arc-extinguishing grid plates and the exhaust channel are arranged at intervals;
an arc leading groove and an arc leading notch are formed in each of the detachable arc-extinguishing grid piece and the fixed arc-extinguishing grid piece and are communicated with each other, thermosetting frame plates are fixedly arranged at the edge positions of the arc leading groove and the arc leading notch, a gas generating plate is arranged below each thermosetting frame plate, one side of each gas generating plate, far away from each thermosetting frame plate, is not in contact with each other and is provided with a heat conducting plate, and the thermosetting frame plates are fixedly connected with the heat conducting plates;
the tail end lower flash barrier is fixedly provided with a third mounting block, a second groove and a longitudinal threaded hole IV are formed in the third mounting block, the second groove and the longitudinal threaded hole IV are perpendicularly crossed, a tail end screw is arranged in the longitudinal threaded hole IV in a threaded manner, and one side, away from the tail end lower flash barrier, of the third mounting block is fixedly provided with a tail end upper flash barrier.
Preferably, the first mounting block and the first protruding rod are integrally formed.
Preferably, the second mounting rod and the second protruding rod are integrally formed.
Preferably, the head end lower flash barrier, the middle end lower flash barrier, the tail end lower flash barrier, the head end upper flash barrier, the middle end upper flash barrier and the tail end upper flash barrier are all made of magnetic materials.
Preferably, the thickness of the detachable arc chute sheet is larger than that of the fixed arc chute sheet.
Preferably, the height of the detachable arc-extinguishing grid plate is equal to the distance between the lower arc-insulating wall of the head end and the upper arc-insulating wall of the head end, and the height of the fixed arc-extinguishing grid plate is equal to the distance between the lower arc-insulating wall of the middle end and the upper arc-insulating wall of the middle end.
A circuit breaker comprises the arc extinguish chamber.
Compared with the prior art, the invention has the beneficial effects that:
1. the device is provided with a plurality of groups of upper and lower arc isolating walls at the middle end and fixed arc extinguishing grid pieces fixedly arranged in the arc isolating walls, the more the arc extinguishing grid pieces cut by electric arcs are, the higher the electric arc voltage is, the larger the energy of the electric arcs capable of being extinguished is, the better the breaking and electric service life performance is, so that the proper number of arc extinguishing grid pieces can be automatically selected for assembly and use according to the requirements of actual conditions, and the device has strong universality and high universality;
2. the first arc-extinguishing grid piece close to the static bus firstly contacts with the electric arc, the contact time is long, the burning loss is more serious than that of other arc-extinguishing grid pieces, the detachable arc-extinguishing grid piece is arranged in the device and serves as the first arc-extinguishing grid piece, the thickness of the first arc-extinguishing grid piece is larger than that of other arc-extinguishing grid pieces, the through hole is formed in the through hole, the heat absorption ring and the heat insulation ring are arranged at the through hole, the heat absorption ring can reduce the heat reaching the detachable arc-extinguishing grid piece, the heat insulation ring can avoid conducting the heat on the heat absorption ring to the detachable arc-extinguishing grid piece, the first arc-extinguishing grid piece can be detached and replaced independently after being damaged, other;
3. the device is provided with a gas generating plate which can generate H when the arc erodes the gas generating plate2The arc contact surface of the gas generating plate is provided with a thermosetting frame plate, the thermosetting frame plate can resist heat, and the heat can be conducted to a heat conducting plate to be dissipated, so that the gas generating plate is prevented from being influenced by high-temperature ablation;
4. be provided with the unidirectional part among the exhaust passage of this device, and be provided with the stop part on the unidirectional part, effectively block the return path of metal ion in the free steam of electric arc, prevent that electric arc from putting back again in the arc extinguishing chamber after the exhaust passage on the arc extinguishing chamber discharges to reduce the density of metal steam in the arc extinguishing chamber effectively, improve dielectric strength.
The arc extinguishing chamber is provided, the number of arc extinguishing grids can be freely assembled, the first grid which is firstly contacted with the electric arc is detachably arranged, the replacement after the damage is convenient, the structure of the arc extinguishing chamber is more durable, the service life of the device is effectively prolonged, the circuit breaker comprising the arc extinguishing chamber is further provided, the use is convenient, and the popularization is very worth.
Drawings
FIG. 1 is a schematic diagram of an overall structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an exploded structure of a second embodiment of the present invention;
FIG. 3 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic overall structure diagram of a second embodiment of the present invention;
FIG. 5 is a schematic view of the detachable arc chute and its mounting position;
FIG. 6 is an enlarged view of the invention at B of FIG. 5;
FIG. 7 is a schematic view of a fixed arc chute and its installation position according to the present invention;
FIG. 8 is a schematic view showing the connection relationship of the thermosetting frame plate, the gas generating plate and the heat conductive plate of the present invention;
fig. 9 is a schematic view of the installation position of the flash barrier on the tail end of the present invention.
In the figure: 1 head end lower arc-insulating wall, 2 middle end lower arc-insulating wall, 3 tail end lower arc-insulating wall, 4 first mounting block, 5 clamping groove, 6 transverse threaded hole I, 7 first convex rod, 8 longitudinal threaded hole I, 9 head end upper arc-insulating wall, 10 connecting part, 11 threaded connecting groove, 12 head end fixing screw, 13 detachable arc-extinguishing grid sheet, 14 high temperature resistant coating, 15 heat-insulating ring, 16 heat-absorbing ring, 17 through hole, 18 second mounting rod, 19 first groove, 20 longitudinal threaded hole II, 21 connecting screw, 22 second convex rod, 23 longitudinal threaded hole III, 24 exhaust channel, 25 one-way piece, blocking part 251, 26 middle end upper arc-insulating wall, 27 fixed arc-extinguishing grid sheet, 28 arc-guiding groove, 29 arc-guiding notch, 30 thermosetting frame plate, 31 gas-generating plate, 32 heat-conducting plate, 33 third mounting block, 34 second groove, 35 longitudinal threaded hole IV, 36 tail end screw, 37 tail end upper arc-insulating wall.
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.
Referring to fig. 1-9, the present invention provides a technical solution:
an arc extinguish chamber comprises a head end lower arc-insulating wall 1, and also comprises a plurality of groups of middle end lower arc-insulating walls 2 and tail end lower arc-insulating walls 3, a first installation block 4 is fixedly arranged on the head end lower arc-insulating wall 1, a clamping groove 5 and a transverse threaded hole 6 are arranged on the first installation block 4, the clamping groove 5 and the transverse threaded hole 6 are vertically crossed, a first convex rod 7 is arranged on the side edge of the first installation block 4, the first convex rod 7 and a first groove 19 are the same in shape and size, a longitudinal threaded hole 8 is arranged on the first convex rod 7, a head end upper arc-insulating wall 9 is fixedly arranged on one side of the first installation block 4 away from the head end lower arc-insulating wall 1, a connecting part 10 is inserted in the clamping groove 5, a threaded connecting groove 11 is arranged on the connecting part 10, a head end fixing screw 12 is arranged in the transverse threaded connecting groove 6 and the threaded connecting groove 11 in a threaded penetrating manner and used for fixing a detachable arc-extinguishing grid sheet 13 by threads, can dismantle arc extinguishing bars piece 13's surface is scribbled and is equipped with high temperature resistant coating 14, this is because can dismantle arc extinguishing bars piece 13 and contact electric arc at first, arc extinguishing bars piece 13 is dismantled in the easy burnout of electric arc high temperature, high temperature resistant coating 14's setting has then played the guard action, the inlay card is provided with a plurality of heat insulating rings 15 in can dismantling arc extinguishing bars piece 13, heat insulating rings 15's setting can be avoided leading to the heat conduction on the heat insulating rings 16 to dismantling arc extinguishing bars piece 13, fixed heat absorbing rings 16 that is provided with in the inner circle of heat insulating rings 15, heat absorbing rings 16 can absorb heat and reduce and reach the heat on can dismantling arc extinguishing bars piece 13, play cooling protection effect, through-hole 17 has been seted up at heat absorbing rings 16's center, through-hole 17 runs through can dismantle arc extinguishing bars.
A second mounting rod 18 is fixedly arranged on the middle-end lower arc-isolating wall 2, one end of the second mounting rod 18 is provided with a first groove 19 and a second longitudinal threaded hole 20, the first groove 19 is vertically crossed with the second longitudinal threaded hole 20, a connecting screw 21 is arranged in the second longitudinal threaded hole 20 in a threaded manner, one end of the second mounting rod 18, which is far away from the first groove 19, is fixedly provided with a second convex rod 22, the second convex rod 22 and the second groove 34 are identical in shape and size, the second convex rod 22 is provided with a third longitudinal threaded hole 23, the second mounting rod 18 is provided with an exhaust channel 24, one end, which leads to the outside, of the exhaust channel 24 is gradually narrowed, a one-way piece 25 is fixedly arranged in the exhaust channel 24, a blocking part 251 is arranged on the one-way piece 25, the return path of metal ions in arc free steam is effectively blocked, the arc is prevented from being discharged from the exhaust channel 24 on the arc-, thereby reduce the density of metal steam in the arc extinguishing chamber effectively, improve dielectric strength, second installation pole 18 is kept away from under the middle end one side of flash barrier 2 and is fixed to be provided with flash barrier 26 on the middle end, and fixed inlay card is provided with the fixed arc extinguishing bars piece 27 of multiunit insulating each other on the second installation pole 18, and fixed arc extinguishing bars piece 27 and exhaust passage 24 interval set up.
The detachable arc-extinguishing grid plate 13 and the fixed arc-extinguishing grid plate 27 are both provided with an arc-striking groove 28 and an arc-striking gap 29, the arc-striking groove 28 is communicated with the arc-striking gap 29, the frame parts of the arc-striking groove 28 and the arc-striking gap 29 are both fixedly provided with thermosetting frame plates 30, gas-producing plates 31 are arranged below the thermosetting frame plates 30, and when the arc erodes the gas-producing plates 31, the gas-producing plates 31 can produce H2The movement of electric arc is accelerated, the electric arc is cooled, the diameter of the electric arc is reduced, the breaking performance of the circuit breaker is favorably improved, one side, away from the thermosetting frame plate 30, of the gas generating plate 31 is not in contact with the heat conducting plate 32, the thermosetting frame plate 30 is fixedly connected with the heat conducting plate 32, one of the thermosetting frame plates 30 can resist heat, and the other thermosetting frame plate can conduct heat to the heat conducting plate 32 to dissipate, so that the gas generating plate 31 is prevented from being influenced by high-temperature ablation.
The tail end lower arc-isolating wall 3 is fixedly provided with a third mounting block 33, the third mounting block 33 is provided with a second groove 34 and a longitudinal threaded hole four 35, the second groove 34 and the longitudinal threaded hole four 35 are vertically crossed, a tail end screw 36 is arranged in the longitudinal threaded hole four 35 in a threaded manner, and one side, far away from the tail end lower arc-isolating wall 3, of the third mounting block 33 is fixedly provided with a tail end upper arc-isolating wall 37.
Preferably, the first mounting block 4 and the first protruding rod 7 are integrally formed, which is beneficial to improving the overall stability of the structure.
Preferably, the second mounting bar 18 and the second nose bar 22 are integrally formed, which is advantageous for improving the overall stability of the structure.
Preferably, the head end lower arc-insulating wall 1, the middle end lower arc-insulating wall 2, the tail end lower arc-insulating wall 3, the head end upper arc-insulating wall 9, the middle end upper arc-insulating wall 26 and the tail end upper arc-insulating wall 37 are all made of magnetic materials, so that a magnetic field is formed between the opposite arc-insulating walls, the generated electric arc is ignited, and the electric arc is pulled up to the positions of the detachable arc-extinguishing grid pieces 13 and the fixed arc-extinguishing grid pieces 27.
Preferably, the thickness of the removable arc chute 13 is greater than the thickness of the fixed arc chute 27, so that the removable arc chute 13, which is the first to contact the arc, is more durable.
Preferably, the height of the detachable arc-extinguishing grid pieces 13 is equal to the distance between the lower arc-insulating wall 1 at the head end and the upper arc-insulating wall 9 at the head end, and the height of the fixed arc-extinguishing grid pieces 27 is equal to the distance between the lower arc-insulating wall 2 at the middle end and the upper arc-insulating wall 26 at the middle end, so that the installation is convenient, the whole body is attractive and tidy, and the structure is stable.
A circuit breaker comprises the arc extinguish chamber.
The first embodiment is as follows: firstly, take under the head end the flash barrier 1, insert the connecting portion 10 that will dismantle arc extinguishing bars piece 13 and establish in draw-in groove 5, it screws up to run through horizontal screw hole 6 and threaded connection groove 11 with head end set screw 12 in proper order, make can dismantle arc extinguishing bars piece 13 and be fixed, secondly, take under the intermediate end flash barrier 2 again, insert first protruding pole 7 first recess 19 on second installation pole 18, it screws up to run through vertical screw hole two 20 and vertical screw hole 8 with connecting screw 21 in proper order again, a set of fixed arc extinguishing bars piece 27 on the intermediate end flash barrier 2 has been installed promptly this moment, thirdly, insert second protruding pole 22 second recess 34, screw up after running through vertical screw hole four 35 and vertical screw hole three 23 with tail end screw 36 in proper order, the equipment has been accomplished promptly.
When in use, the first end lower arc-insulating wall 1, the middle end lower arc-insulating wall 2, the tail end lower arc-insulating wall 3, the first end upper arc-insulating wall 9, the middle end upper arc-insulating wall 26 and the tail end upper arc-insulating wall 37 are all made of magnetic materials, so that a magnetic field is formed between the opposite arc-insulating walls, arc striking is carried out on the generated arc, the arc is lifted to the positions of the detachable arc-extinguishing grid pieces 13 and the fixed arc-extinguishing grid pieces 27, the detachable arc-extinguishing grid pieces 13 are firstly contacted with the arc for a long time and have high contact temperature, but the contact surface of the detachable arc-extinguishing grid pieces 13 is coated with the high-temperature-resistant coating 14, the detachable arc-extinguishing grid pieces 13 have a protection effect, the thickness of the detachable arc-extinguishing grid pieces 13 is larger than that of other fixed arc-extinguishing grid pieces 27, the through holes 17 are formed in the detachable arc-extinguishing grid pieces 13, the through holes 17 are provided with the heat-absorbing rings 16 and the heat-insulating rings 15, the heat-absorbing rings 16 can reduce the heat reaching, after long-time use, if can dismantle arc extinguishing bars piece 13 and appear damaging, can reverse the head end set screw 12 of dismantling and change can dismantle arc extinguishing bars piece 13, other structures of circuit breaker then can continue to use, reduce use cost, reduce extravagantly, fixed arc extinguishing bars piece 27 is cut apart into several sections with electric arc, and each piece of fixed arc extinguishing bars piece 27 that is insulating each other all is equivalent to an electrode, consequently has many negative and positive pole to press the peak. For alternating current electric arc, a 150V-250V method medium intensity appears at the position close to the cathode when the electric arc crosses zero, so that the electric arc cannot be maintained continuously and is extinguished.
Example two: the principle and the using process are the same as those of the first embodiment, and the only difference is that two groups of fixed arc-extinguishing grid plates 27 on the middle-end lower arc-insulating wall 2 are adopted in the embodiment, after the second step is completed, the second convex rod 22 is inserted into the first groove 19 on the second group of middle-end lower arc-insulating wall 2, the other connecting screw 21 penetrates through the second longitudinal threaded hole 20 and the third longitudinal threaded hole 23 and then is screwed, finally, the second convex rod 22 at the tail end position is inserted into the second groove 34, and the tail end screw 36 penetrates through the fourth longitudinal threaded hole 35 and the third longitudinal threaded hole 23 sequentially and then is screwed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an explosion chamber, includes flash barrier (1) under the head end, its characterized in that: the novel anti-explosion door is characterized by further comprising a plurality of groups of middle-end lower arc-isolating walls (2) and tail-end lower arc-isolating walls (3), a first installation block (4) is fixedly arranged on the head-end lower arc-isolating wall (1), a clamping groove (5) and a transverse threaded hole I (6) are formed in the first installation block (4), the clamping groove (5) and the transverse threaded hole I (6) are perpendicularly crossed, a first convex rod (7) is arranged on the side edge of the first installation block (4), a longitudinal threaded hole I (8) is formed in the first convex rod (7), one side, far away from the head end, of the first installation block (4) of the lower arc-isolating wall (1) is fixedly provided with a head-end upper arc-isolating wall (9), a connecting portion (10) is inserted into the clamping groove (5), a threaded connecting groove (11) is formed in the connecting portion (10), and a fixing head end (12) is arranged in the transverse threaded hole I (, the connecting part (10) is fixedly arranged on a detachable arc-extinguishing grid plate (13), a high-temperature-resistant coating (14) is coated on the surface of the detachable arc-extinguishing grid plate (13), a plurality of heat-insulating rings (15) are embedded in the detachable arc-extinguishing grid plate (13), a heat-absorbing ring (16) is fixedly arranged in an inner ring of each heat-insulating ring (15), a through hole (17) is formed in the center of each heat-absorbing ring (16), and each through hole (17) penetrates through the detachable arc-extinguishing grid plate (13);
a second mounting rod (18) is fixedly arranged on the middle-end lower arc-isolating wall (2), one end of the second mounting rod (18) is provided with a first groove (19) and a longitudinal threaded hole II (20), the first groove (19) and the longitudinal threaded hole II (20) are perpendicularly crossed, a connecting screw (21) is arranged in the longitudinal threaded hole II (20) in a threaded manner, one end, far away from the first groove (19), of the second mounting rod (18) is fixedly provided with a second convex rod (22), a longitudinal threaded hole III (23) is arranged on the second convex rod (22), an exhaust channel (24) is arranged on the second mounting rod (18), one end, leading to the outside, of the exhaust channel (24) is gradually narrowed, a one-way piece (25) is fixedly arranged in the exhaust channel (24), a blocking portion (251) is arranged on the one side, far away from the middle-end lower arc-isolating wall (2), of the second mounting rod (18) is fixedly provided with the middle-end upper arc-isolating wall (26) A plurality of groups of fixed arc-extinguishing grid plates (27) which are insulated from each other are fixedly clamped and arranged on the second mounting rod (18), and the fixed arc-extinguishing grid plates (27) and the exhaust channel (24) are arranged at intervals;
an arc leading groove (28) and an arc leading notch (29) are formed in each of the detachable arc-extinguishing grid plate (13) and the fixed arc-extinguishing grid plate (27), the arc leading groove (28) is communicated with the arc leading notch (29), thermosetting frame plates (30) are fixedly arranged on the frames of the arc leading groove (28) and the arc leading notch (29), a gas generating plate (31) is arranged below the thermosetting frame plates (30), one side, far away from the thermosetting frame plates (30), of the gas generating plate (31) is provided with a heat conducting plate (32) in a non-contact manner, and the thermosetting frame plates (30) are fixedly connected with the heat conducting plate (32);
fixed third installation piece (33) that is provided with under the tail end on flash barrier (3), second recess (34) and vertical screw hole four (35) have been seted up on third installation piece (33), second recess (34) and vertical screw hole four (35) vertical cross, screw thread is provided with tail end screw (36) in vertical screw hole four (35), one side that flash barrier (3) was fixed on being provided with flash barrier (37) on the tail end under keeping away from the tail end in third installation piece (33).
2. An arc chute according to claim 1, characterized in that: the first mounting block (4) and the first convex rod (7) are integrally formed.
3. An arc chute according to claim 1, characterized in that: the second mounting rod (18) and the second protruding rod (22) are integrally formed.
4. An arc chute according to claim 1, characterized in that: the head end lower arc-insulating wall (1), the middle end lower arc-insulating wall (2), the tail end lower arc-insulating wall (3), the head end upper arc-insulating wall (9), the middle end upper arc-insulating wall (26) and the tail end upper arc-insulating wall (37) are all made of magnetic materials.
5. An arc chute according to claim 1, characterized in that: the thickness of the detachable arc-extinguishing grid plate (13) is larger than that of the fixed arc-extinguishing grid plate (27).
6. An arc chute according to claim 1, characterized in that: the height of the detachable arc-extinguishing grid piece (13) is equal to the distance between the lower arc-extinguishing wall (1) of the head end and the upper arc-extinguishing wall (9) of the head end, and the height of the fixed arc-extinguishing grid piece (27) is equal to the distance between the lower arc-extinguishing wall (2) of the middle end and the upper arc-extinguishing wall (26) of the middle end.
7. A circuit breaker, characterized by: comprising an arc chute according to any of the preceding claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010112430.8A CN111243886B (en) | 2020-02-24 | 2020-02-24 | Arc extinguish chamber and circuit breaker thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010112430.8A CN111243886B (en) | 2020-02-24 | 2020-02-24 | Arc extinguish chamber and circuit breaker thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111243886A true CN111243886A (en) | 2020-06-05 |
| CN111243886B CN111243886B (en) | 2022-04-22 |
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| CN202010112430.8A Active CN111243886B (en) | 2020-02-24 | 2020-02-24 | Arc extinguish chamber and circuit breaker thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116779392A (en) * | 2023-08-02 | 2023-09-19 | 佛山市轻净光电科技有限公司 | High-stability circuit breaker |
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| CN108010769A (en) * | 2017-12-28 | 2018-05-08 | 加西亚电子电器股份有限公司 | A kind of arc-extinguishing chamber of circuit breaker |
| CN209216906U (en) * | 2018-12-19 | 2019-08-06 | 乐清市金瓯机电配件有限公司 | A kind of arc-chutes easy to install |
| CN209947700U (en) * | 2019-05-09 | 2020-01-14 | 四川大唐国际甘孜水电开发有限公司 | Arc extinguishing chamber of adjustable arc extinguishing bars piece distance |
| JP2020013791A (en) * | 2018-07-18 | 2020-01-23 | エルエス産電株式会社Lsis Co., Ltd. | Arc-extinguishing device of wiring circuit breaker |
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| EP0138174A2 (en) * | 1983-10-15 | 1985-04-24 | Licentia Patent-Verwaltungs-GmbH | Quenching device for an automatic circuit breaker |
| CN204117894U (en) * | 2014-10-08 | 2015-01-21 | 浙江欧迪森电气有限公司 | Be convenient to the arc control device of dismounting arc extinguishing grid pieces |
| CN108010769A (en) * | 2017-12-28 | 2018-05-08 | 加西亚电子电器股份有限公司 | A kind of arc-extinguishing chamber of circuit breaker |
| JP2020013791A (en) * | 2018-07-18 | 2020-01-23 | エルエス産電株式会社Lsis Co., Ltd. | Arc-extinguishing device of wiring circuit breaker |
| CN209216906U (en) * | 2018-12-19 | 2019-08-06 | 乐清市金瓯机电配件有限公司 | A kind of arc-chutes easy to install |
| CN209947700U (en) * | 2019-05-09 | 2020-01-14 | 四川大唐国际甘孜水电开发有限公司 | Arc extinguishing chamber of adjustable arc extinguishing bars piece distance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116779392A (en) * | 2023-08-02 | 2023-09-19 | 佛山市轻净光电科技有限公司 | High-stability circuit breaker |
| CN116779392B (en) * | 2023-08-02 | 2024-03-15 | 宇消安全科技(上海)有限公司 | High-stability circuit breaker |
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|---|---|
| CN111243886B (en) | 2022-04-22 |
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