CN117238728B - Low-voltage direct-current circuit breaker - Google Patents
Low-voltage direct-current circuit breaker Download PDFInfo
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- CN117238728B CN117238728B CN202311225570.6A CN202311225570A CN117238728B CN 117238728 B CN117238728 B CN 117238728B CN 202311225570 A CN202311225570 A CN 202311225570A CN 117238728 B CN117238728 B CN 117238728B
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- 238000009423 ventilation Methods 0.000 claims abstract description 58
- 239000000428 dust Substances 0.000 claims abstract description 53
- 230000007246 mechanism Effects 0.000 claims description 28
- 238000009825 accumulation Methods 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 15
- 238000004891 communication Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The application discloses a low-voltage direct current breaker, which relates to the technical field of breakers and comprises an outer box body, wherein the outer surface of the outer box body is movably connected with a box door, ventilation windows are formed in two sides of the outer box body, and dust shielding components are arranged in a memory of the ventilation windows.
Description
Technical Field
The application relates to the technical field of circuit breakers, in particular to a low-voltage direct-current circuit breaker.
Background
The low-voltage direct current breaker is used as one of the most important components in a low-voltage direct current distribution system and is widely applied to important power stations, transformer substations, communication base stations, household electricity and the like. The stable and reliable operation ensures the safety of key departments such as a power system, communication and the like. In addition, the low-voltage direct current circuit breaker is also widely applied to urban rail transit systems, ship power systems and emerging photovoltaic systems, so that the safety of a power distribution system, electric equipment and the photovoltaic systems is ensured.
The prior art also has the following problems:
1. The existing circuit breaker is usually placed in the outer box body of the circuit breaker and is installed outdoors, when the outdoor weather is overcast and rainy, rainwater is easy to enter the inner part of the outer box body of the circuit breaker along with dust, and the circuit breaker is not maintained under the normal use condition, so that the dust in the inner part is difficult to clean, and the work of the circuit breaker is affected when serious.
2. When the circuit breaker is overhauled, the inside of the circuit breaker needs to be checked, the circuit breaker is arranged in the outer box body of the circuit breaker, the view angle of the outer box body of the circuit breaker is limited, the operation space is small, and a large amount of time can be wasted if the whole outer box body of the circuit breaker is detached.
3. In the case of a circuit breaker, the current rises hundreds to thousands times within a few milliseconds, and as a result, a very strong magnetic field is generated, and finally, a thrust force is generated and the circuit breaker is activated, when the circuit breaker is activated, fault current flows in the form of an arc, the fault current flows in the form of an arc, and a high temperature is generated inside, the whole ventilation property of the circuit breaker is poor, so that the high Wen Jiujiu cannot be dispersed, the service life of the circuit breaker is influenced, and when the circuit breaker fails, only a trip occurs, and if the service condition of household appliances is not noticed, the sound of the trip alone is insufficient for the people to find the circuit breaker to fail.
Disclosure of Invention
The application provides the low-voltage direct current breaker, which solves the problems that in the prior art, rainwater easily enters the inside of the outer box body of the breaker in the weather of the rainwater, the view angle of the outer box body of the breaker is limited and inconvenient to maintain, the inside of the breaker generates high temperature, the high Wen Jiujiu cannot be dispersed due to poor ventilation performance of the whole breaker, the rainwater and dust can be reduced to enter the inside of the outer box body of the breaker in the weather of the rainwater, the body position of the breaker can be adjusted, and the ventilation mechanism enables the inside of the breaker to circulate air outside the breaker when the breaker generates high temperature.
The application provides a low-voltage direct current breaker which comprises an outer box body, wherein the outer surface of the outer box body is movably connected with a box door, ventilation windows are arranged on two sides of the outer box body, dust shielding components are arranged in inner cavities of the ventilation windows, a first connecting rod is fixedly arranged in the inner cavities of the ventilation windows, a supporting component is fixedly arranged on the inner wall of the outer box body, the breaker component is arranged on the upper surface of the supporting component, the breaker component comprises a shell, a dismounting mechanism is arranged at the top end of the shell, an alarm mechanism is arranged on the outer surface of the shell, a connecting shell is connected in a sliding mode in the inner cavities of the shell, grooves are formed in the bottom end of the shell, protruding blocks are arranged at the bottom end of the connecting shell and are in sliding connection with the grooves, ventilation mechanisms are arranged on two sides of the shell, and a switch gate is rotatably connected in the inner cavities of the shell.
Further, the dust shielding assembly comprises a dust shielding plate, the dust shielding plate is fixed on the inner wall of the outer box body and is aligned with the ventilating window, a vent is formed in the outer surface of the dust shielding plate, the bottom end of the dust shielding plate is slidably connected with a dust box, the upper portion of the dust shielding plate is provided with a rain shielding plate, one end of the rain shielding plate is fixedly connected with a first connecting strip, two sides of the first connecting strip are fixedly connected with a first spring, one end of the first spring, away from the first connecting strip, is fixedly connected with a first sliding block, a communication groove is formed in the outer surface of the rain shielding plate, one side of the rain shielding plate, away from the first connecting strip, is fixedly connected with the inner wall of the outer box body, and is inclined downwards in an integral mode and is close to the lower end of the water storage groove.
Further, the first connecting rod passes through the communicating groove and is connected with the flashing in a sliding way, the inner cavity of the ventilation opening is obliquely arranged, and the outer side is lower than the inner side.
Further, the supporting component comprises an adjusting ring, a slot is formed in the outer surface of the adjusting ring, the outer surface of the adjusting ring is rotationally connected with a supporting plate, a first inserting rod is inserted into an inner cavity of the supporting plate, a first connecting plate is fixedly mounted at one end, far away from the adjusting ring, of the first inserting rod, a first pull ring is fixedly mounted on the outer surface of the first connecting plate, and second springs are fixedly connected at two ends of the first connecting plate.
Further, the slot has a plurality ofly, and evenly arranges in the surface of adjusting ring, the shell has been placed to the upper surface of backup pad, first inserted bar and slot are inserted, the one end and the backup pad fixed connection of first connecting plate are kept away from to the second spring.
Further, the second connecting strip is inserted in the inner chamber of switch floodgate, the inner wall of shell rotates and is connected with central lever, the one end and the second connecting strip swing joint that central lever is close to the switch floodgate, the one end fixedly connected with fifth spring that central lever is close to the switch floodgate, the inner chamber sliding connection of shell has the electro-magnet, the bottom of electro-magnet is provided with the pin, and the bottom of pin and the upper surface contact of central lever, the top fixed mounting of electro-magnet has the connecting block, connecting block and fifth spring fixed connection, the bottom of electro-magnet is provided with the wire, the bottom fixedly connected with sixth spring of central lever, the second connecting rod has been inserted to the inner chamber of sixth spring, and sixth spring and second connecting rod fixed connection, the bottom of shell is provided with the metal strip, metal strip upper surface fixedly connected with access plate, the one end of access plate has cup jointed the current-conducting plate, the top fixedly connected with explosion chamber of current-conducting plate, the both sides of shell and connection shell all are provided with the heat dissipation frame, there is the clearance between the heat dissipation frame.
Further, when the switch gate is pushed upwards, the fifth spring expands and the sixth spring compresses, a negative offset exists between the second connecting strip and the switch gate, so that a torque is generated, and when the fifth spring is pushed upwards, the offset between the second connecting strip and the switch gate becomes positive, so that the switch gate is driven to rotate upwards.
Further, the dismounting mechanism comprises a second connecting plate, a second pull ring is fixedly arranged at the top end of the second connecting plate, second inserting rods are fixedly arranged at two sides of the second pull ring, the second inserting rods penetrate through the shell and the connecting shell to be inserted, a limiting ring is fixedly arranged at the middle position of the second connecting plate, the limiting ring is in sliding connection with the shell, a third spring is sleeved on the outer surface of the limiting ring, and the third spring is located between the limiting ring and the inner wall of the shell.
Further, alarm mechanism includes the connecting seat, the bottom both sides fixed mounting of connecting seat has the fixed block, the both sides of switch floodgate are provided with the second slider, the spout has been seted up to the surface of connecting seat, second slider and spout sliding connection, one side that the fixed block is close to the second slider is provided with the button, the surface fixed mounting of second slider has the pressure ball, the last fixed surface of shell installs the siren, the second slider has two, and the bottom of second slider is provided with the fourth spring, makes the switch floodgate when not touching the pressure ball, has the clearance between second slider and the button, button and siren electric connection, and the pressing control siren of button sends the alarm.
Further, ventilation mechanism includes the ventilation frame, the inner chamber of ventilation frame has evenly been arranged and has sheltered from the strip, the bottom fixed mounting of ventilation frame has the draw runner, the bottom fixed mounting of draw runner has the slide bar, the surface swing joint of slide bar has the connection lever, the middle part swing joint of connection lever has the third connecting rod, the one end fixed mounting who keeps away from the slide bar of connection lever has the push rod, the third connecting rod has two, and rotates with the inner wall of shell and connection shell respectively to be connected, the slide bar respectively with shell and connection shell sliding connection, ventilation frame and heat dissipation frame sliding connection, and shelter from the strip and cover the clearance of heat dissipation frame, the bottom contact of push rod and access board.
The technical scheme provided by the application has at least the following technical effects or advantages:
1. Because the dust shielding component is adopted, the problem that the existing circuit breaker is usually placed in the outer box body of the circuit breaker and is installed outdoors is effectively solved, when the circuit breaker is in overcast and rainy weather, rainwater is easy to enter the inner part of the outer box body of the circuit breaker along with dust, the circuit breaker is not maintained under the normal use condition, so that the inner dust is difficult to clean, and the work of the circuit breaker is affected seriously.
2. Due to the adoption of the supporting component, the problem that the circuit breaker needs to be inspected when overhauled is solved, the circuit breaker is arranged in the circuit breaker outer box body, the angle of view of the circuit breaker outer box body is limited, the operation space is small, and a large amount of time can be wasted if the whole circuit breaker outer box body is disassembled.
3. Because the circuit breaker assembly is adopted, the problem that the current can rise hundreds of times within a few milliseconds under the condition of short circuit is effectively solved, and as a result, a very strong magnetic field is generated, the thrust is finally generated and the circuit breaker is activated, when the circuit breaker is activated, fault current flows in an arc mode, the fault current flows in an arc mode and generates high temperature in the interior, the high Wen Jiujiu is not dispersed due to poor ventilation property of the whole circuit breaker, the service life of the circuit breaker is influenced, and only tripping occurs when the circuit breaker breaks down.
Drawings
FIG. 1 is a schematic view of the whole structure of a first embodiment of the present application;
FIG. 2 is a schematic view of an outer case according to a first embodiment of the present application;
FIG. 3 is a schematic view of a dust plate according to a first embodiment of the present application;
FIG. 4 is a schematic view of a dust box according to a first embodiment of the present application;
FIG. 5 is a schematic view of a support assembly according to a first embodiment of the present application;
FIG. 6 is a schematic view of a housing structure in a second embodiment of the present application;
FIG. 7 is a schematic diagram of a disassembling mechanism in a second embodiment of the present application;
FIG. 8 is a schematic view of a heat dissipating rack according to a second embodiment of the present application;
FIG. 9 is an enlarged schematic view illustrating the structure A in FIG. 8 according to the second embodiment of the present application;
fig. 10 is a schematic structural diagram of a ventilation mechanism in a second embodiment of the present application.
In the figure: 1. an outer case; 2. a door; 3. a ventilation window; 4. a dust shielding assembly; 41. a dust-blocking plate; 42. a vent; 43. a dust box; 44. a flashing; 45. a first connecting bar; 46. a first spring; 47. a first slider; 48. a communication groove; 49. a water accumulation tank; 5. a first connecting rod; 6. a support assembly; 61. an adjusting ring; 62. a slot; 63. a support plate; 64. a first plunger; 65. a first connection plate; 66. a first pull ring; 67. a second spring; 7. a circuit breaker assembly; 71. a housing; 72. a dismounting mechanism; 721. a second connecting plate; 722. a second pull ring; 723. a second plunger; 724. a limiting ring; 725. a third spring; 73. an alarm mechanism; 731. a connecting seat; 732. a fixed block; 733. a second slider; 734. a chute; 735. a button; 736. a pressure ball; 737. an alarm; 74. a connection housing; 75. a ventilation mechanism; 751. a ventilation frame; 752. a shielding strip; 753. a slide bar; 754. a slide bar; 755. a connecting lever; 756. a third connecting rod; 757. a push rod; 76. a switch gate; 77. a second connecting bar; 78. a central lever; 79. a fifth spring; 710. an electromagnet; 711. a connecting block; 712. a wire; 713. a sixth spring; 714. a second connecting rod; 715. a metal strip; 716. a passage plate; 717. a conductive plate; 718. an arc extinguishing chamber; 719. and a heat dissipation frame.
Detailed Description
For the fact that rainwater is easy to enter the inner part of the outer box body of the circuit breaker along with dust, the dust shielding assembly can reduce the entering of the rainwater and the dust into the inner part of the outer box body of the circuit breaker in the weather of the rainwater; for the limited angle of view of the outer box body of the circuit breaker, the operation space is small, and the body position of the circuit breaker can be adjusted through the support component, so that each view angle in the circuit breaker can be clearly observed; for the problem that the high Wen Jiujiu cannot be dispersed due to poor ventilation performance of the whole circuit breaker, the circuit breaker assembly can enable air inside the circuit breaker and air outside the circuit breaker to circulate when the circuit breaker generates high temperature, so that the internal temperature is quickly reduced, and meanwhile, an alarm is given out when the circuit breaker is short-circuited.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Example 1
Please refer to fig. 1 and 2, a low voltage dc breaker, including outer box 1, the surface swing joint of outer box 1 has chamber door 2, ventilation window 3 has been seted up to the both sides of outer box 1, the inner chamber of ventilation window 3 is provided with dust shielding subassembly 4, the inner chamber fixed mounting of ventilation window 3 has head rod 5, the inner wall fixed mounting of outer box 1 has supporting component 6, circuit breaker subassembly 7 has been placed to supporting component 6's upper surface, circuit breaker subassembly 7 installs in the inside of outer box 1, maintain circuit breaker subassembly 7 through opening chamber door 2, ventilation window 3 is used for the ventilation of the inside of outer box 1, dust shielding subassembly 4 can protect the inside of outer box 1 when overcast and rainy weather, supporting component 6 can drive circuit breaker subassembly 7 and carry out angular adjustment, convenient operation when overhaul circuit breaker subassembly 7.
Referring to fig. 3 and 4, the dust shielding component 4 includes a dust shielding plate 41, the dust shielding plate 41 is fixed on the inner wall of the outer box 1 and aligned with the ventilation window 3, a ventilation opening 42 is formed on the outer surface of the dust shielding plate 41, a dust box 43 is slidably connected to the bottom end of the dust shielding plate 41, a rain shielding plate 44 is arranged above the dust shielding plate 41, a first connecting strip 45 is fixedly connected to one end of the rain shielding plate 44, two sides of the first connecting strip 45 are fixedly connected with a first spring 46, one end of the first spring 46 away from the first connecting strip 45 is fixedly connected with a first slider 47, a communication groove 48 is formed on the outer surface of the rain shielding plate 44, a water storage groove 49 is formed on one side of the rain shielding plate 44 away from the first connecting strip 45, the first slider 47 is fixedly connected with the inner wall of the outer box 1, the whole rain shielding plate 44 is inclined downwards, and is lower near the water storage groove 49, the first connecting rod 5 passes through the communication groove 48 and the rain shielding plate 44, the inner cavity of the ventilation opening 42 is obliquely arranged, the outer side is relatively lower than the inner side, so that dust can be reduced to enter the inner part of the outer box body 1, the ventilation window 3 is used for shielding the dust when being ventilated, wind flows through the inner part of the outer box body 1 from the ventilation opening 42, the dust accumulation box 43 is used for collecting the dust which is accumulated and fallen on the dust accumulation box 41, the dust accumulation box is convenient to overhaul and clean, in overcast and rainy weather, the ventilation window 3 is easy to enter the rainwater and the dust due to wind and rain, the water accumulation groove 49 is full of the rainwater when raining, the whole of the rain shielding plate 44 is heavier, at the moment, the first spring 46 compresses the whole of the rain shielding plate 44 to move outwards, so that the whole of the rain shielding plate 44 acts as a eave, the outer surface of the ventilation window 3 is shielded, the quantity of the rainwater entering the inner part of the outer box body 1 is reduced, and the accumulated water in the water accumulation groove 49 is disappeared after the rainwater, the elastic force of the first spring 46 presses the first connecting strip 45 to enable the flashing 44 to shrink towards the inner cavity of the outer box body 1, at this time, shielding of the whole flashing 44 to the ventilation window 3 is reduced, and good ventilation of the outer box body 1 is ensured.
Referring to fig. 2 and 5, the supporting component 6 includes an adjusting ring 61, a slot 62 is formed on the outer surface of the adjusting ring 61, a supporting plate 63 is rotatably connected to the outer surface of the adjusting ring 61, a first inserting rod 64 is inserted into an inner cavity of the supporting plate 63, a first connecting plate 65 is fixedly mounted at one end of the first inserting rod 64 far away from the adjusting ring 61, a first pull ring 66 is fixedly mounted at the outer surface of the first connecting plate 65, second springs 67 are fixedly connected at two ends of the first connecting plate 65, a plurality of slots 62 are uniformly distributed on the outer surface of the adjusting ring 61, a housing 71 is placed on the upper surface of the supporting plate 63, the first inserting rod 64 and the slot 62 are inserted, one end of the second spring 67 far away from the first connecting plate 65 is fixedly connected with the supporting plate 63, when overhauling breaker assembly 7, can adjust breaker assembly 7's position through supporting component 6, pulling first pull ring 66 drives the outside removal of first connecting plate 65, thereby the tensile inner chamber that makes first inserted bar 64 in backup pad 63 of this moment second spring 67, first inserted bar 64 and slot 62 break away from the joint this moment, rotate backup pad 63's position on adjusting ring 61, make backup pad 63 holistic position adjust, when reaching the suitable position loosen first pull ring 66 and make first inserted bar 64 and slot 62 insert the joint again, the backup pad 63 of being convenient for is stable installs on adjusting ring 61, can carry out the position adjustment according to breaker assembly 7 needs the position of maintaining.
Example two
Referring to fig. 6 and 7, the circuit breaker assembly 7 includes a housing 71, a dismounting mechanism 72 is provided at the top end of the housing 71, an alarm mechanism 73 is provided at the outer surface of the housing 71, a connection housing 74 is slidably connected to an inner cavity of the housing 71, a groove is provided at the bottom end of the housing 71, a protrusion is provided at the bottom end of the connection housing 74, the protrusion and the groove are slidably connected, ventilation mechanisms 75 are provided at both sides of the housing 71, a switch gate 76 is rotatably connected to an inner cavity of the housing 71, a second connection bar 77 is inserted into an inner cavity of the switch gate 76, a central lever 78 is rotatably connected to an inner wall of the housing 71, one end of the central lever 78 close to the switch gate 76 is movably connected to the second connection bar 77, the end of the central lever 78 close to the switch gate 76 is fixedly connected with a fifth spring 79, the inner cavity of the shell 71 is slidably connected with an electromagnet 710, the bottom end of the electromagnet 710 is provided with a pin, the bottom end of the pin is in contact with the upper surface of the central lever 78, the top end of the electromagnet 710 is fixedly provided with a connecting block 711, the connecting block 711 is fixedly connected with the fifth spring 79, the bottom end of the electromagnet 710 is provided with a wire 712, the bottom end of the central lever 78 is fixedly connected with a sixth spring 713, the inner cavity of the sixth spring 713 is inserted with a second connecting rod 714, the sixth spring 713 is fixedly connected with the second connecting rod 714, the bottom end of the shell 71 is provided with a metal strip 715, the metal strip 715 is used for overload protection, the upper surface of the metal strip 715 is fixedly connected with a passage plate 716, one end of the passage plate 716 is sleeved with a conductive plate 717, the top end of the conductive plate 717 is fixedly connected with an arc extinguishing chamber 718, both sides of the shell 71 and the connecting shell 74 are provided with heat dissipation frames 719, a gap exists between the heat dissipation frames 719, when the switch gate 76 is pushed upwards, the fifth spring 79 expands, the sixth spring 713 is compressed, a negative offset exists between the second connecting strip 77 and the switch gate 76, so that a torque is generated, when the fifth spring 79 is pushed upwards continuously, the offset of the second connecting strip 77 and the switch gate 76 is positive, thereby driving the switch gate 76 to rotate upwards, the magnetic field generated by the electromagnet 710 is essentially proportional to the magnitude of the current passing through it, and in the event of a short circuit, the current rises hundreds or thousands of times within a few milliseconds, as a result of which a very strong magnetic field is generated, the electromagnet 710 will move downwards under the action of the magnetic field, the lower pin will push the central lever 78, there is a gap between the wire 712 and the access plate 716 under the rotation of the central lever 78, and the switch gate 76 is driven to rotate, the end of the switch gate 76 changes from up to down, eventually generating a small thrust and activating the circuit breaker, the current stops flowing due to the wire 712 and the access plate 716 being out of contact, the arc extinguishing chamber 718 is formed by arranging a plurality of metal sheets, when the circuit breaker is activated, fault current flows in the form of an arc to cause damage, the inside of the shell 71 stably rises, air in the cooling rack 719 can be quickly circulated through the effect of the ventilation mechanism 75 to cool down, the dismounting mechanism 72 is used for separating the connecting shell 74 from the shell 71 so as to be convenient for overhauling the inner cavity of the shell 71, the alarm mechanism 73 can give an alarm when the tail end of the switch gate 76 rotates downwards to remind a worker to rotate the tail end of the switch gate 76 upwards, or to perform maintenance on the circuit breaker assembly 7.
Referring to fig. 7, the dismounting mechanism 72 includes a second connection plate 721, a second pull ring 722 is fixedly mounted at the top end of the second connection plate 721, a second inserting rod 723 is fixedly mounted at two sides of the second pull ring 722, the second inserting rod 723 is inserted through the outer shell 71 and the connecting shell 74, a limiting ring 724 is fixedly mounted at the middle position of the second connection plate 721, the limiting ring 724 is slidably connected with the outer shell 71, a third spring 725 is sleeved on the outer surface of the limiting ring 724, the third spring 725 is located between the limiting ring 724 and the inner wall of the outer shell 71, when the internal maintenance of the circuit breaker assembly 7 is performed, the second connection plate 721 is moved upwards by pulling the second pull ring 722, at the moment, the limiting ring 724 presses the third spring 725 to enable the second inserting rod 723 to move upwards, the second inserting rod 723 is separated from the connecting shell 74 in the process of moving upwards, and therefore the connecting shell 74 can be taken out, and components inside the outer shell 71 can be quickly overhauled by matching with the body position adjustment of the supporting assembly 6.
Referring to fig. 7, 8 and 9, the alarm mechanism 73 includes a connection seat 731, two sides of the bottom end of the connection seat 731 are fixedly provided with a fixing block 732, two sides of the switch gate 76 are provided with a second slider 733, the outer surface of the connection seat 731 is provided with a sliding slot 734, the second slider 733 is slidably connected with the sliding slot 734, one side of the fixing block 732, which is close to the second slider 733, is provided with a button 735, the outer surface of the second slider 733 is fixedly provided with a pressure ball 736, the upper surface of the housing 71 is fixedly provided with an alarm 737, the second slider 733 is provided with two, and the bottom of the second slider 733 is provided with a fourth spring, so that when the switch gate 76 is not contacted with the pressure ball 736, a gap is reserved between the second slider 733 and the button 735, the button 735 is electrically connected with the alarm 737, and the pressing of the button 735 controls the alarm 737 to give an alarm, when the end of the switch gate 76 is in a short circuit, the pressure ball 736 is pressed by the switch gate 76 in the moving process, the pressure ball 736 is moved back, and the second slider 733 slides in the inner cavity of the sliding slot, so that the second slider 733 presses the second slider 733 to press the second slider 733 to the second slider 735, or the second slider 733 to press the second slider 735 to the alarm, or the alarm mechanism is slightly close to the second slider 733, and the alarm is in time, and the second slider 735 is pressed, and the alarm device is in time, and the alarm device is triggered, and the alarm device is pressed.
Referring to fig. 6, 7 and 10, the ventilation mechanism 75 includes a ventilation frame 751, shielding strips 752 are uniformly arranged in an inner cavity of the ventilation frame 751, a sliding strip 753 is fixedly installed at the bottom end of the ventilation frame 751, a sliding rod 754 is fixedly installed at the bottom end of the sliding strip 753, a connecting lever 755 is movably connected to the outer surface of the sliding rod 754, a third connecting rod 756 is movably connected to the middle part of the connecting lever 755, a push rod 757 is fixedly installed at one end of the connecting lever 755 far away from the sliding rod 754, the two third connecting rods 756 are respectively connected with the inner walls of the outer shell 71 and the connecting shell 74 in a rotating manner, the sliding rod 754 is respectively connected with the outer shell 71 and the connecting shell 74 in a sliding manner, the ventilation frame 751 is connected with the cooling frame 719 in a sliding manner, the shielding strips 752 can cover gaps of the cooling frame 719, the push rod 757 is in contact with the bottom end of the cooling frame 719, when a circuit breaker is short-circuited, a pin drives the central lever 78 to rotate, the central lever 78 to press the channel plate 716, the push rod 757 is driven to move downwards when the channel plate 716, the push rod 757 is driven downwards, the connecting lever 757 is driven downwards to rotate, and the push rod 757 rotates around the third connecting rod 757, the sliding rod, and the sliding rod 757 moves upwards, the inner cavity of the cooling device is driven by the upper and the cooling device, the cooling device is coincident with the inner cavity of the cooling device, and the cooling device is convenient to move down, and the cooling device is stable when the cooling device and the cooling device is coincident with the cooling device.
In summary, the dust baffle 41 is used for shielding dust during ventilation, wind circulates from the ventilation opening 42 through the inside of the outer box body 1, the dust accumulation box 43 is used for collecting the dust which is accumulated and fallen on the dust baffle 41, the dust accumulation box is convenient to clean in a centralized manner during maintenance, in overcast and rainy weather, the rainwater and the dust are easy to enter into the ventilation window 3 due to wind and rain, the rainwater accumulation groove 49 is fully filled with the rainwater during rainy weather to enable the whole of the rain shielding plate 44 to be heavier, at the moment, the first spring 46 compresses the whole of the rain shielding plate 44 to move outwards, so that the whole of the rain shielding plate 44 acts as an eave, the outer surface of the ventilation window 3 is shielded, the quantity of the rainwater entering the inside of the outer box body 1 is reduced, during maintenance of the circuit breaker assembly 7, the position of the circuit breaker assembly 7 can be adjusted through the support assembly 6, the first pull ring 66 is pulled to drive the first connecting plate 65 to move outwards, at this time, the second spring 67 is stretched to slide the first inserting rod 64 in the inner cavity of the supporting plate 63, at this time, the first inserting rod 64 and the inserting groove 62 are separated from being inserted, the position of the supporting plate 63 on the adjusting ring 61 is rotated to adjust the whole body position of the supporting plate 63, at the same time, the second connecting plate 721 is moved upwards by pulling the second pull ring 722, at this time, the limiting ring 724 presses the third spring 725 to move the second inserting rod 723 upwards, the second inserting rod 723 moves upwards and the connecting shell 74 is separated from being inserted, so that the connecting shell 74 can be taken out, the components inside the shell 71 are quickly overhauled in cooperation with the body position adjustment of the supporting assembly 6, the tail end of the switch 76 moves downwards when the circuit breaker is short circuited, the switch 76 presses the pressure ball 736 in the moving process, the second slider 733 presses the button 735 on the fixed block 732, the alarm 737 triggers the alarm when the button 735 presses, the staff is reminded to timely brake or maintain, meanwhile, the pin drives the central lever 78 to rotate, so that the central lever 78 extrudes the passage plate 716, the push rod 757 is driven to move downwards when the passage plate 716 moves downwards, the connecting lever 755 rotates around the third connecting rod 756, the slide rod 754 moves upwards due to the fact that the end of the push rod 757 moves downwards, the slide bar 753 is driven to move upwards, the ventilation frame 751 slides in the inner cavity of the cooling frame 719, gaps between the shielding strip 752 and the cooling frame 719 coincide, air circulation is facilitated, and the circuit breaker can be stably and rapidly lowered when short circuit occurs.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art should be able to apply equivalents and modifications according to the technical scheme and the concept of the present application within the scope of the present application.
Claims (5)
1. The low-voltage direct current breaker comprises an outer box body (1), and is characterized in that the outer surface of the outer box body (1) is movably connected with a box door (2), ventilation windows (3) are formed in two sides of the outer box body (1), dust shielding components (4) are arranged in inner cavities of the ventilation windows (3), a first connecting rod (5) is fixedly arranged in the inner cavities of the ventilation windows (3), a supporting component (6) is fixedly arranged on the inner wall of the outer box body (1), and a breaker component (7) is arranged on the upper surface of the supporting component (6);
the circuit breaker assembly (7) comprises a shell (71), a dismounting mechanism (72) is arranged at the top end of the shell (71), an alarm mechanism (73) is arranged on the outer surface of the shell (71), a connecting shell (74) is slidingly connected to the inner cavity of the shell (71), a groove is arranged at the bottom end of the shell (71), a protruding block is arranged at the bottom end of the connecting shell (74) and slidingly connected with the groove, ventilation mechanisms (75) are arranged at two sides of the shell (71), and a switch brake (76) is rotationally connected to the inner cavity of the shell (71);
The dust shielding assembly (4) comprises a dust shielding plate (41), the dust shielding plate (41) is fixed on the inner wall of the outer box body (1) and is aligned with the ventilation window (3), a vent (42) is formed in the outer surface of the dust shielding plate (41), a dust box (43) is slidably connected to the bottom end of the dust shielding plate (41), a rain shielding plate (44) is arranged above the dust shielding plate (41), a first connecting strip (45) is fixedly connected to one end of the rain shielding plate (44), first springs (46) are fixedly connected to two sides of the first connecting strip (45), first sliding blocks (47) are fixedly connected to one ends, far away from the first connecting strip (45), of the first springs (46), a communicating groove (48) is formed in the outer surface of the rain shielding plate (44), a water accumulation groove (49) is formed in one side, far away from the first connecting strip (45), of the first sliding blocks (47) and the inner wall of the outer box body (1), and the first sliding blocks (44) are fixedly connected to one end, close to the lower end of the rain shielding plate (49), and the whole rain accumulation groove is inclined downwards;
The first connecting rod (5) passes through the communicating groove (48) and is connected with the flashing (44) in a sliding way, the inner cavity of the ventilation opening (42) is obliquely arranged, and the outer side is relatively lower than the inner side;
The supporting assembly (6) comprises an adjusting ring (61), a slot (62) is formed in the outer surface of the adjusting ring (61), a supporting plate (63) is rotatably connected to the outer surface of the adjusting ring (61), a first inserting rod (64) is inserted into an inner cavity of the supporting plate (63), a first connecting plate (65) is fixedly arranged at one end, far away from the adjusting ring (61), of the first inserting rod (64), a first pull ring (66) is fixedly arranged on the outer surface of the first connecting plate (65), and a second spring (67) is fixedly connected to two ends of the first connecting plate (65);
The inner cavity of the switch gate (76) is inserted with a second connecting strip (77), the inner wall of the shell (71) is rotationally connected with a central lever (78), one end of the central lever (78) close to the switch gate (76) is movably connected with the second connecting strip (77), one end of the central lever (78) close to the switch gate (76) is fixedly connected with a fifth spring (79), the inner cavity of the shell (71) is slidably connected with an electromagnet (710), the bottom end of the electromagnet (710) is provided with a pin, the bottom end of the pin is contacted with the upper surface of the central lever (78), the top end of the electromagnet (710) is fixedly provided with a connecting block (711), the connecting block (711) is fixedly connected with the fifth spring (79), the bottom end of the electromagnet (710) is provided with a wire (712), the bottom end of the central lever (78) is fixedly connected with a sixth spring (713), the inner cavity of the sixth spring (713) is inserted with a second connecting rod (714), the sixth spring (713) is fixedly connected with the second connecting rod (714), the bottom end of the shell (71) is fixedly connected with the upper surface of the metal strip (716), the metal strip (716) is fixedly connected with a metal strip (716), an arc extinguishing chamber (718) is fixedly connected to the top end of the conducting plate (717), heat dissipation frames (719) are arranged on two sides of the outer shell (71) and the connecting shell (74), and gaps exist between the heat dissipation frames (719);
The alarm mechanism (73) comprises a connecting seat (731), fixed blocks (732) are fixedly arranged on two sides of the bottom end of the connecting seat (731), second sliding blocks (733) are arranged on two sides of the switch gate (76), sliding grooves (734) are formed in the outer surface of the connecting seat (731), the second sliding blocks (733) are slidably connected with the sliding grooves (734), buttons (735) are arranged on one side, close to the second sliding blocks (733), of the fixed blocks (732), pressure balls (736) are fixedly arranged on the outer surface of the second sliding blocks (733), alarms (737) are fixedly arranged on the upper surface of the shell (71), two second sliding blocks (733) are arranged on the bottom of the second sliding blocks (733), a fourth spring is arranged on the bottom of each second sliding block (733), gaps are reserved between the second sliding blocks (733) and the buttons (735) when the switch gate (76) is not contacted with the pressure balls (736), the buttons (735) are electrically connected with the alarms (737), and the pressing of the buttons (737) are controlled to send out the alarms.
2. A low voltage direct current breaker according to claim 1, characterized in that the plurality of slots (62) are uniformly arranged on the outer surface of the adjusting ring (61), the upper surface of the supporting plate (63) is provided with a shell (71), the first inserting rod (64) is inserted into the slots (62), and one end of the second spring (67) far away from the first connecting plate (65) is fixedly connected with the supporting plate (63).
3. A low voltage direct current breaker according to claim 1, characterized in that the fifth spring (79) expands and the sixth spring (713) compresses when the switch gate (76) is pushed upwards, and that the second connecting bar (77) and the switch gate (76) have a negative offset, so that they generate a torque, and that the offset of the second connecting bar (77) and the switch gate (76) becomes positive when the fifth spring (79) is pushed upwards further, so that the switch gate (76) is rotated upwards.
4. A low voltage direct current breaker as claimed in claim 1, characterized in that the dismounting mechanism (72) comprises a second connecting plate (721), a second pull ring (722) is fixedly arranged at the top end of the second connecting plate (721), second inserting rods (723) are fixedly arranged at two sides of the second pull ring (722), the second inserting rods (723) penetrate through the shell (71) and the connecting shell (74) to be inserted, a limiting ring (724) is fixedly arranged at the middle position of the second connecting plate (721), the limiting ring (724) is in sliding connection with the shell (71), a third spring (725) is sleeved on the outer surface of the limiting ring (724), and the third spring (725) is arranged between the limiting ring (724) and the inner wall of the shell (71).
5. The low-voltage direct current breaker according to claim 1, wherein the ventilation mechanism (75) comprises a ventilation frame (751), shielding strips (752) are uniformly distributed in an inner cavity of the ventilation frame (751), sliding strips (753) are fixedly installed at the bottom ends of the ventilation frame (751), sliding rods (754) are fixedly installed at the bottom ends of the sliding strips (753), connecting levers (755) are movably connected to the outer surfaces of the sliding rods (754), a third connecting rod (756) is movably connected to the middle portion of the connecting levers (755), push rods (757) are fixedly installed at one ends, far away from the sliding rods (754), of the connecting levers (755), two third connecting rods (756) are respectively connected with the inner walls of a shell (71) and a connecting shell (74) in a rotating mode, the sliding rods (754) are respectively connected with the shell (71) and the connecting shell (74) in a sliding mode, the ventilation frame (751) and the heat dissipation frame (719) are respectively connected in a sliding mode, the shielding strips (752) can cover gaps of the heat dissipation frame (719), and the push rods (757) are in contact with the bottom ends of the push rods (75716).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311225570.6A CN117238728B (en) | 2023-09-21 | 2023-09-21 | Low-voltage direct-current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311225570.6A CN117238728B (en) | 2023-09-21 | 2023-09-21 | Low-voltage direct-current circuit breaker |
Publications (2)
| Publication Number | Publication Date |
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| CN117238728A CN117238728A (en) | 2023-12-15 |
| CN117238728B true CN117238728B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311225570.6A Active CN117238728B (en) | 2023-09-21 | 2023-09-21 | Low-voltage direct-current circuit breaker |
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|---|---|
| CN117238728A (en) | 2023-12-15 |
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