CN215933434U - Electromagnetic coil structure of low-voltage direct-current circuit breaker - Google Patents
Electromagnetic coil structure of low-voltage direct-current circuit breaker Download PDFInfo
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- CN215933434U CN215933434U CN202121958923.XU CN202121958923U CN215933434U CN 215933434 U CN215933434 U CN 215933434U CN 202121958923 U CN202121958923 U CN 202121958923U CN 215933434 U CN215933434 U CN 215933434U
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- heat dissipation
- circuit breaker
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- current circuit
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Abstract
The utility model relates to the technical field of circuit breakers and discloses an electromagnetic coil structure of a low-voltage direct-current circuit breaker, which comprises an electromagnetic mechanism, wherein a heat dissipation mechanism is arranged on the lower side of the electromagnetic mechanism and comprises a heat dissipation frame, a group of fan grooves are formed in the middle of the heat dissipation frame, a plurality of fans are arranged in the middle of the fan grooves, the heat dissipation frame comprises an upper heat dissipation plate and a lower heat dissipation plate, and positioning holes are formed in four corners of the upper heat dissipation plate and four corners of the lower heat dissipation plate. When the electromagnetic mechanism works, the plurality of fans are rotated by opening the plurality of fans, the plurality of fans rotate to enable air to circulate, the group of long radiating grooves can greatly increase the flow of air circulation, when vibration occurs, the electromagnetic mechanism abuts against the upper radiating plate to enable the damping spring to be compressed, the positioning holes slide on the limiting columns, the influence of the vibration on the electromagnetic mechanism is reduced, the lower radiating plate plays a supporting role, and meanwhile, the air circulation can be increased.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to an electromagnetic coil structure of a low-voltage direct-current circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. The circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the application range, the high-voltage and low-voltage boundary lines are relatively vague, and the circuit breakers above 3kV are generally called high-voltage electric appliances. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like. Furthermore, no parts need to be changed after breaking the fault current. At present, it has been widely used. Distribution of electricity is an extremely important link in the generation, transmission and use of electricity. The distribution system comprises a transformer and various high-low voltage electrical equipment, and the low-voltage circuit breaker is an electrical appliance with a large using amount.
The temperature rise of the existing circuit breaker is the most important factor influencing the safety of the circuit breaker, and the electromagnetic coil of the existing miniature circuit breaker is limited by the current carrying capacity of the metal conductor, so that the circuit breaker is easy to change due to the temperature rise, and the reliability of the circuit breaker is further influenced. Accordingly, those skilled in the art have provided a solenoid structure of a low voltage dc circuit breaker to solve the problems set forth in the background art described above.
Disclosure of Invention
The present invention is directed to provide an electromagnetic coil structure of a low-voltage dc circuit breaker, so as to solve the problems in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a low pressure direct current circuit breaker's solenoid structure, includes electromagnetic mechanism, electromagnetic mechanism's downside is provided with heat dissipation mechanism, heat dissipation mechanism is including the heat dissipation frame, the centre of heat dissipation frame is provided with a set of fan groove, the centre in fan groove is provided with a plurality of fan, the heat dissipation frame includes heating panel and lower heating panel, the locating hole has all been seted up in the four corners of going up heating panel and lower heating panel, the centre of locating hole is provided with spacing post, the centre of spacing post is provided with damping spring, a set of heat dissipation elongated slot has all been seted up in the centre of going up heating panel and lower heating panel, the centre of going up the heating panel is provided with the stopper, a set of fixed block groove has been seted up in the centre of going up the heating panel.
As a still further scheme of the utility model: the fan groove is fixedly connected with the fan, and the fan groove is fixedly connected with the heat dissipation frame.
As a still further scheme of the utility model: the limiting column is movably connected with the positioning hole, and the damping spring is movably connected with the limiting column.
As a still further scheme of the utility model: the electromagnetic mechanism comprises a support and a coil framework, and a coil is arranged on the outer side of the coil framework.
As a still further scheme of the utility model: the iron core is arranged at one end of the coil framework, and the ejector rod is arranged at the other end of the coil framework.
As a still further scheme of the utility model: the limiting block groove is formed in the middle of the lower side of the support, ventilation openings are formed in the two sides, located in the limiting block groove, of the lower side of the support, and fixing blocks are arranged at the two ends of the lower side of the support.
As a still further scheme of the utility model: the fixed block is matched with the fixed block groove, and the limiting block groove is matched with the limiting block.
As a still further scheme of the utility model: the coil framework is located in the middle of the support, and a return spring is arranged between the iron core and the ejector rod.
Compared with the prior art, the utility model has the beneficial effects that:
1. when electromagnetic mechanism during operation, through opening a plurality of fan for a plurality of fan rotates, and a plurality of fan rotates and makes the circulation of air, and a set of heat dissipation elongated slot can the greatly increased flow of circulation of air, and when vibrations take place, electromagnetic mechanism supports and can make damping spring compressed at last heating panel, and the locating hole slides on spacing post, has reduced vibrations and has played the supporting role to electromagnetic mechanism, lower heating panel, can increase the circulation of air simultaneously.
2. When short-circuit current passes through the coil, under the action of a magnetic field generated by the coil, the iron core moves towards the coil framework, the ejector rod is driven to move towards the right side, and the return spring in the coil framework is compressed; after short-circuit current eliminated, reset spring diastole drives the iron core and moves right, and the drive ejector pin resets, can make the wind-force that a plurality of fan produced conveniently pass through the vent, further cools down the coil, makes fixed block and fixed block groove be connected through the bolt, makes it fixed, and the rethread bolt makes the spacing block groove be connected with the stopper, avoids making the support drop because of vibrations, has strengthened electromagnetic mechanism's stability greatly.
Drawings
Fig. 1 is a schematic structural diagram of a solenoid structure of a low-voltage dc circuit breaker;
fig. 2 is an exploded view of the solenoid structure of a low voltage dc circuit breaker;
fig. 3 is a schematic structural diagram of a heat dissipation mechanism in a solenoid structure of a low-voltage dc circuit breaker;
fig. 4 is a schematic structural diagram of a heat dissipation frame in a solenoid structure of a low-voltage dc circuit breaker;
fig. 5 is a schematic diagram of an electromagnetic mechanism in a solenoid structure of a low-voltage dc circuit breaker;
fig. 6 is a schematic structural diagram of a bracket in a solenoid structure of a low-voltage direct-current circuit breaker.
In the figure: 1. an electromagnetic mechanism; 11. a support; 111. a vent; 112. a limiting block groove; 113. a fixed block; 12. a coil bobbin; 13. a coil; 14. an iron core; 15. a top rod; 2. a heat dissipation mechanism; 21. a heat dissipation frame; 211. an upper heat dissipation plate; 2111. a fixed block groove; 2112. a limiting block; 2113. positioning holes; 2114. a heat dissipation long groove; 212. a lower heat dissipation plate; 213. a limiting column; 214. a damping spring; 22. a fan groove; 23. a fan.
Detailed Description
Referring to fig. 1 to 6, in an embodiment of the present invention, an electromagnetic coil structure of a low voltage dc circuit breaker includes an electromagnetic mechanism 1, a heat dissipation mechanism 2 is disposed at a lower side of the electromagnetic mechanism 1, the heat dissipation mechanism 2 includes a heat dissipation frame 21, a set of fan grooves 22 is disposed in the middle of the heat dissipation frame 21, a plurality of fans 23 are disposed in the middle of the fan grooves 22, the heat dissipation frame 21 includes an upper heat dissipation plate 211 and a lower heat dissipation plate 212, positioning holes 2113 are disposed at four corners of the upper heat dissipation plate 211 and the lower heat dissipation plate 212, a limiting column 213 is disposed in the middle of the positioning holes 2113, a damping spring 214 is disposed in the middle of the limiting column 213, a set of long heat dissipation grooves 2114 is disposed in the middle of the upper heat dissipation plate 211 and the lower heat dissipation plate 212, a limiting block 2112 is disposed in the middle of the upper heat dissipation plate 211, and a set of fixing block grooves 2111 is disposed in the middle of the upper heat dissipation plate 211.
In fig. 1, 2, 3 and 4: fan slot 22 and fan 23 fixed connection, fan slot 22 and heat dissipation frame 21 fixed connection, spacing post 213 and locating hole 2113 swing joint, damping spring 214 and spacing post 213 swing joint, when electromagnetic mechanism 1 during operation, through opening a plurality of fan 23, make a plurality of fan 23 rotate, a plurality of fan 23 rotates and makes the circulation of air, the flow of circulation of air can greatly increased to a set of heat dissipation elongated slot 2114, when taking place vibrations, electromagnetic mechanism 1 supports and can make damping spring 214 compressed at last heating panel 211, locating hole 2113 slides on spacing post 213, the influence of vibrations to electromagnetic mechanism 1 has been reduced, lower heating panel 212 plays the supporting role, can increase the circulation of air simultaneously.
In fig. 1, 2, 5 and 6: the electromagnetic mechanism 1 comprises a support 11 and a coil framework 12, a coil 13 is arranged on the outer side of the coil framework 12, an iron core 14 is arranged at one end of the coil framework 12, an ejector rod 15 is arranged at the other end of the coil framework 12, a limit block groove 112 is formed in the middle position of the lower side of the support 11, ventilation openings 111 are formed in two sides, located on the limit block groove 112, of the lower side of the support 11, fixed blocks 113 are arranged at two ends of the lower side of the support 11, the fixed blocks 113 are matched with the fixed block grooves 2111, the limit block grooves 112 are matched with the limit blocks 2112, the coil framework 12 is located in the middle position of the support 11, a return spring is arranged between the iron core 14 and the ejector rod 15, when short-circuit current passes through the coil 13, the iron core 14 moves towards the coil framework 12 under the action of a magnetic field generated by the coil 13, the ejector rod 15 is driven to move towards the right side, and the return spring in the coil framework 12 is compressed; after short-circuit current eliminated, reset spring diastole, drive iron core 14 and remove rightly, drive ejector pin 15 resets, can make the wind-force that a plurality of fan 23 produced conveniently pass through vent 111, further cool down coil 13, make fixed block 113 and fixed block groove 2111 be connected through the bolt, make it fixed, the rethread bolt makes spacing block groove 112 and stopper 2112 be connected, avoid making support 11 drop because of vibrations, strengthened electromagnetic mechanism 1's stability greatly.
The working principle of the utility model is as follows: when the electromagnetic mechanism 1 works, the plurality of fans 23 are opened to enable the plurality of fans 23 to rotate, the plurality of fans 23 rotate to enable air to circulate, the flow of the air circulation can be greatly increased by the group of long heat dissipation grooves 2114, when vibration occurs, the electromagnetic mechanism 1 abuts against the upper heat dissipation plate 211 to enable the damping springs 214 to be compressed, the positioning holes 2113 slide on the limiting columns 213, the influence of the vibration on the electromagnetic mechanism 1 is reduced, the lower heat dissipation plate 212 plays a supporting role and can increase the air circulation, when short-circuit current passes through the coil 13, under the action of a magnetic field generated by the coil 13, the iron core 14 moves towards the coil framework 12 to drive the ejector rod 15 to move towards the right side, and the reset springs in the coil framework 12 are compressed; after short-circuit current eliminated, reset spring diastole, drive iron core 14 and remove rightly, drive ejector pin 15 resets, can make the wind-force that a plurality of fan 23 produced conveniently pass through vent 111, further cool down coil 13, make fixed block 113 and fixed block groove 2111 be connected through the bolt, make it fixed, the rethread bolt makes spacing block groove 112 and stopper 2112 be connected, avoid making support 11 drop because of vibrations, strengthened electromagnetic mechanism 1's stability greatly.
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 scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.
Claims (8)
1. The electromagnetic coil structure of the low-voltage direct-current circuit breaker comprises an electromagnetic mechanism (1) and is characterized in that a heat dissipation mechanism (2) is arranged on the lower side of the electromagnetic mechanism (1), the heat dissipation mechanism (2) comprises a heat dissipation frame (21), a group of fan grooves (22) are formed in the middle of the heat dissipation frame (21), a plurality of fans (23) are arranged in the middle of each fan groove (22), the heat dissipation frame (21) comprises an upper heat dissipation plate (211) and a lower heat dissipation plate (212), positioning holes (2113) are formed in four corners of the upper heat dissipation plate (211) and the lower heat dissipation plate (212), a limiting column (213) is arranged in the middle of each positioning hole (2113), a damping spring (214) is arranged in the middle of each limiting column (213), a group of heat dissipation long grooves (2114) are formed in the middle of the upper heat dissipation plate (211) and the lower heat dissipation plate (212), and a limiting block (2112) is arranged in the middle of the upper heat dissipation plate (211), a group of fixing block grooves (2111) are formed in the middle of the upper heat dissipation plate (211).
2. The electromagnetic coil structure of a low-voltage direct-current circuit breaker according to claim 1, characterized in that the fan groove (22) is fixedly connected with the fan (23), and the fan groove (22) is fixedly connected with the heat dissipation frame (21).
3. The electromagnetic coil structure of the low-voltage direct-current circuit breaker according to claim 1, characterized in that the limiting post (213) is movably connected with the positioning hole (2113), and the damping spring (214) is movably connected with the limiting post (213).
4. The electromagnetic coil structure of a low-voltage direct-current circuit breaker according to claim 1, characterized in that the electromagnetic mechanism (1) comprises a support (11) and a bobbin (12), and a coil (13) is arranged on the outer side of the bobbin (12).
5. The electromagnetic coil structure of the low-voltage direct-current circuit breaker according to claim 4, characterized in that one end of the coil bobbin (12) is provided with an iron core (14), and the other end of the coil bobbin (12) is provided with a push rod (15).
6. The electromagnetic coil structure of the low-voltage direct-current circuit breaker according to claim 4, wherein a limit block groove (112) is formed in the middle position of the lower side of the bracket (11), ventilation openings (111) are formed in the two sides, located on the limit block groove (112), of the lower side of the bracket (11), and fixing blocks (113) are arranged at the two ends of the lower side of the bracket (11).
7. The electromagnetic coil structure of the low-voltage direct-current circuit breaker according to claim 6, characterized in that the fixing block (113) is matched with the fixing block groove (2111), and the limiting block groove (112) is matched with the limiting block (2112).
8. The electromagnetic coil structure of the low-voltage direct-current circuit breaker according to claim 4, characterized in that the coil bobbin (12) is located at the middle position of the bracket (11), and a return spring is arranged between the iron core (14) and the ejector rod (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121958923.XU CN215933434U (en) | 2021-08-19 | 2021-08-19 | Electromagnetic coil structure of low-voltage direct-current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121958923.XU CN215933434U (en) | 2021-08-19 | 2021-08-19 | Electromagnetic coil structure of low-voltage direct-current circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215933434U true CN215933434U (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121958923.XU Active CN215933434U (en) | 2021-08-19 | 2021-08-19 | Electromagnetic coil structure of low-voltage direct-current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215933434U (en) |
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2021
- 2021-08-19 CN CN202121958923.XU patent/CN215933434U/en active Active
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