CN214848432U - Series connection mechanism for direct-current large-shell-frame molded case circuit breaker - Google Patents
Series connection mechanism for direct-current large-shell-frame molded case circuit breaker Download PDFInfo
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- CN214848432U CN214848432U CN202121377209.1U CN202121377209U CN214848432U CN 214848432 U CN214848432 U CN 214848432U CN 202121377209 U CN202121377209 U CN 202121377209U CN 214848432 U CN214848432 U CN 214848432U
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- copper bar
- circuit breaker
- shaped copper
- heat dissipation
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Abstract
The utility model discloses a series connection mechanism of a direct current big-shell-frame molded case circuit breaker, which comprises at least one series connection copper bar, wherein the series connection copper bar comprises a U-shaped copper bar and a straight copper bar; the U-shaped copper bar and the straight copper bar are both rectangular, one end of the U-shaped copper bar is provided with a rectangular notch, the first rectangular notch penetrates through the upper side and the lower side of the U-shaped copper bar, and the rectangular notch divides the end of the U-shaped copper bar into at least two mounting heads which are arranged at intervals; the other end of the U-shaped copper bar is provided with a plurality of first heat dissipation grooves, and the first heat dissipation grooves penetrate through the upper side and the lower side of the U-shaped copper bar; one end of the straight copper bar is provided with a plurality of second heat dissipation grooves, and the second heat dissipation grooves penetrate through the upper side and the lower side of the straight copper bar; the straight copper bar is parallel to the U-shaped copper bar and is stacked and fixed on one side of the U-shaped copper bar, and the first heat dissipation groove and the second heat dissipation groove are in one-to-one correspondence from top to bottom. The advantages are that: the heat dissipation area of the tandem copper bar is increased, the temperature rise is effectively improved, and the volume of the tandem copper bar is reduced. The circuit breaker can be prevented from being sprayed out when being broken, and the circuit protection effect is enhanced.
Description
Technical Field
The utility model relates to a circuit breaker technical field especially relates to a big shell frame moulded case circuit breaker tandem connection mechanism of direct current.
Background
The series connection structure of the circuit breaker mainly realizes that the current characteristics of the direct current circuit breaker are input and output at one time, and the series connection pole number of the circuit breaker shows the rated voltage and the line fault protection capability of the circuit breaker. However, the existing series connection structure of the 1600A circuit breaker is a U-shaped series copper bar, and the temperature rise at the series connection position is high due to the short distance and limited space of the series connection point. In order to change the situation that the temperature rise is higher, the existing improvement scheme is to increase the aluminum block and make the heat radiation structure, install the aluminum block on the U type copper bar that concatenates through the screw. Although this method can improve the temperature rise well, it results in the increase of the dimension of the series connection structure of the circuit breaker in the length and height directions, thereby making the circuit breaker more heavy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a big shell frame of direct current moulded case circuit breaker concatenation mechanism to solve the aforementioned problem that exists among the prior art.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a series connection mechanism of a direct-current large-shell-frame molded case circuit breaker comprises at least one series connection copper bar, wherein the series connection copper bar comprises a U-shaped copper bar and a straight copper bar; the U-shaped copper bar and the straight copper bar are both rectangular, one end of the U-shaped copper bar is provided with at least one rectangular notch which is sunken to be close to the other end of the U-shaped copper bar, the rectangular notch penetrates through the upper side and the lower side of the U-shaped copper bar, and the rectangular notch divides one end of the U-shaped copper bar with the rectangular notch into at least two mounting heads which are arranged at intervals; a plurality of first heat dissipation grooves which are sunken towards the end close to the rectangular opening are uniformly arranged at the other end of the U-shaped copper bar at intervals, and the first heat dissipation grooves penetrate through the upper side and the lower side of the U-shaped copper bar; a plurality of second heat dissipation grooves which are sunken towards the other end of the straight copper bar are uniformly arranged at intervals at one end of the straight copper bar, and the second heat dissipation grooves penetrate through the upper side and the lower side of the straight copper bar; the distance between every two adjacent first radiating grooves is equal to the distance between every two adjacent second radiating grooves; the straight copper bar is parallel to the U-shaped copper bar in a stacked mode and fixed on one side of the U-shaped copper bar, and the first radiating grooves and the second radiating grooves are in one-to-one correspondence from top to bottom.
Preferably, each mounting head is provided with at least one first mounting hole penetrating through the two opposite sides of the mounting head, the circuit breaker is provided with a second mounting hole corresponding to the first mounting hole, and a fastener penetrates through the first mounting hole and the second mounting hole to fixedly connect the tandem copper bar to the circuit breaker.
Preferably, the tandem connection mechanism further comprises a protective cover arranged on the outer side of the tandem connection copper bar, the protective cover comprises a rectangular baffle, two sides of the baffle opposite to each other in the circumferential direction are respectively provided with a side plate which protrudes and extends outwards in the direction perpendicular to the baffle, and the two side plates are parallel to each other and have the same extending direction; a top plate which protrudes outwards and extends along a direction perpendicular to the baffle plate is arranged on one circumferential side of the baffle plate, the top plate is perpendicular to the side plate, and the top plate and the side plate are positioned on the same side of the baffle plate; the extending end of the top plate is positioned outside the extending end of the side plate; be provided with the mounting groove that runs through relative both sides from top to bottom on the roof, circumference one side of mounting groove is provided with along being on a parallel with the curb plate is to keeping away from the protruding spacing inserted bar that extends of direction of roof, the slot that sets up on spacing inserted bar and the circuit breaker corresponds the cooperation, with will protection casing and circuit breaker fixed connection.
Preferably, a plurality of exhaust holes are formed in the top plate and the baffle plate, and the exhaust holes in the top plate penetrate through the upper side and the lower side of the top plate; the exhaust holes in the baffle penetrate through two opposite sides of the baffle along the extending direction parallel to the side plates.
Preferably, still be provided with the first fixed orifices that runs through relative both sides about it on the roof, be provided with the second fixed orifices on the circuit breaker, the fastener passes in proper order first fixed orifices with the second fixed orifices will protection casing fixed connection is on the circuit breaker.
The utility model has the advantages that: 1. the heat dissipation area of the tandem copper bar is increased, the temperature rise is effectively improved, and the volume of the tandem mechanism is reduced. 2. The circuit breaker can be prevented from being sprayed out when being broken, and the circuit protection effect is enhanced. 3. Can effectively cover the copper bar that concatenates that exposes outside, prevent personnel's touching, play the protection and keep apart the effect.
Drawings
Fig. 1 is an assembly view of a series mechanism and a circuit breaker in an embodiment of the present invention;
fig. 2 is a cross-sectional view of the series mechanism and the circuit breaker in an embodiment of the present invention;
fig. 3 is a schematic structural view of a U-shaped copper bar in an embodiment of the present invention;
fig. 4 is a schematic structural view of a straight copper bar in an embodiment of the present invention;
fig. 5 is a schematic structural view of the tandem copper bar in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of the protective cover in the embodiment of the present invention.
In the figure: 1. a circuit breaker; 2. copper bars are connected in series; 3. a U-shaped copper bar; 4. a mounting head; 5. a first mounting hole; 6. a first heat sink; 7. straight copper bars; 8. a second heat sink; 9. a protective cover; 10. a baffle plate; 11. a side plate; 12. a top plate; 13. an exhaust hole; 14. mounting grooves; 15. a limiting inserted rod; 16. a first fixing hole; 17. A reinforcing sheet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.
As shown in fig. 1 to 6, in the present embodiment, a serial connection mechanism for a direct current large-frame molded case circuit breaker is provided, which includes at least one serial copper bar 2, where the serial copper bar 2 includes a U-shaped copper bar 3 and a straight copper bar 7; the U-shaped copper bar 3 and the straight copper bar 7 are both rectangular, one end of the U-shaped copper bar 3 is provided with at least one rectangular notch which is sunken to be close to the other end of the U-shaped copper bar 3, the rectangular notch penetrates through the upper side and the lower side of the U-shaped copper bar 3, and the rectangular notch divides one end of the U-shaped copper bar 3 with the rectangular notch into at least two mounting heads 4 which are arranged at intervals; a plurality of first heat dissipation grooves 6 which are sunken towards the end close to the rectangular notch are uniformly arranged at the other end of the U-shaped copper bar 3 at intervals, and the first heat dissipation grooves 6 penetrate through the upper side and the lower side of the U-shaped copper bar 3; a plurality of second heat dissipation grooves 8 which are sunken towards the other end of the straight copper bar 7 are uniformly arranged at intervals at one end of the straight copper bar 7, and the second heat dissipation grooves 8 penetrate through the upper side and the lower side of the straight copper bar 7; the distance between two adjacent first heat dissipation grooves 6 is equal to the distance between two adjacent second heat dissipation grooves 8; the straight copper bar 7 is parallel to the U-shaped copper bar 3, is stacked and fixed on one side of the U-shaped copper bar 3, and the first heat dissipation groove 6 and the second heat dissipation groove 8 are in up-down one-to-one correspondence.
The number of copper bar 2 concatenates can set up according to actual conditions, and when a plurality of copper bar 2 concatenates, need to concatenate a plurality of copper bar 2 superposes and sets up the use of concatenating.
The U-shaped copper bar 3 and the straight copper bar 7 in the copper bar 2 in series are fixedly connected in a stacked mode through welding or riveting, so that the conductive cross section area is increased, the size of a single copper bar is reduced, the heat dissipation area is increased by 3 times, and the size of the copper bar 2 in series can be smaller.
In this embodiment, each of the mounting heads 4 is provided with at least one first mounting hole 5 penetrating through the upper and lower opposite sides thereof, the circuit breaker 1 is provided with a second mounting hole corresponding to the first mounting hole 5, and a fastener penetrates through the first mounting hole 5 and the second mounting hole to fixedly connect the tandem copper bar 2 to the circuit breaker 1.
As shown in fig. 6, in this embodiment, the tandem connection mechanism further includes a protective cover 9 disposed outside the tandem copper bar 2, the protective cover 9 includes a rectangular baffle 10, two circumferentially opposite sides of the baffle 10 are respectively provided with a side plate 11 protruding and extending outward along a direction perpendicular to the baffle, and the two side plates 11 are parallel to each other and have the same extending direction; a top plate 12 which protrudes and extends outwards along a direction perpendicular to the top plate 12 is arranged on one circumferential side of the baffle plate 10, the top plate 12 is perpendicular to the side plate 11, and the top plate 12 and the side plate 11 are positioned on the same side of the baffle plate 10; the extending end of the top plate 12 is positioned outside the extending end of the side plate 11; be provided with the mounting groove 14 that runs through relative both sides from top to bottom on the roof 12, circumference one side of mounting groove 14 is provided with along being on a parallel with curb plate 11 is to keeping away from the protruding spacing inserted bar 15 that extends of direction of roof 12, the slot that sets up on spacing inserted bar 15 and the circuit breaker 1 corresponds the cooperation, with will protection casing 9 and circuit breaker 1 fixed connection.
The baffle 10, the side plate 11 and the top plate 12 may be separately and fixedly connected, or the three may be integrally formed.
As shown in fig. 1 and 2, the tandem copper bar 2 is installed at the tandem position of the circuit breaker 1, then the protective cover 9 is correspondingly buckled at the outer side of the tandem copper bar 2, and the protective cover 9 is fixedly connected with the circuit breaker 1, so that the worker is ensured not to touch the tandem copper bar 2 exposed at the outer side of the circuit breaker 1. The protective cover 9 can also play a role of zero flashover when being installed at the wire inlet end, and prevent metal particles from being sprayed out to burn out a circuit when the circuit breaker 1 is disconnected.
A plurality of exhaust holes 13 are formed in the top plate 12 and the baffle plate 10, and the exhaust holes 13 in the top plate 12 penetrate through the upper side and the lower side of the top plate 12; the exhaust holes 13 of the baffle plate 10 penetrate through the opposite sides of the baffle plate 10 in a direction parallel to the extending direction of the side plate 11. The exhaust holes 13 are used for heat dissipation, so that the heat dissipation effect of the series connection structure is improved, and the problem of high temperature rise is further improved.
The top plate 12 is also provided with a first fixing hole 16 penetrating through the upper side and the lower side of the top plate, the breaker 1 is provided with a second fixing hole, and a fastener penetrates through the first fixing hole 16 and the second fixing hole in sequence to fixedly connect the protective cover 9 to the breaker 1; the protection casing 9 with it sets up to concatenate copper bar 2 circuit breaker 1 with one side, just the protection casing 9 with concatenate between the copper bar 2 at a distance of certain distance.
The protective cover 9 is provided with two mounting positions, namely a limiting inserted bar 15 and a first fixing hole 16, the limiting inserted bar 15 is correspondingly inserted into an arc isolation leather slot (slot) on the circuit breaker 1, and the degree of freedom of the protective cover 9 is limited; and then the first fixing hole 16 is used for further limiting, so that the protective cover 9 can be stably fixed on the circuit breaker 1.
The first fixing hole 16 is located at an outer circumference of the mounting groove 14 and is spaced apart from the mounting groove 14. The four corners of the circumferential inner wall of the mounting groove 14 are respectively provided with an arc-shaped reinforcing piece 17, the arrangement of the reinforcing pieces 17 further enhances the stability of the protective cover 9, and the broken metal particles are further prevented from being sprayed out, so that the zero-flashover effect is achieved.
Through adopting the utility model discloses an above-mentioned technical scheme has obtained following profitable effect:
the utility model provides a big shell frame moulded case circuit breaker of direct current concatenates mechanism has increased the heat radiating area who concatenates the copper bar, effectively improves the temperature and rises to self volume has been reduced. The circuit breaker can be prevented from being sprayed out when being broken, and the circuit protection effect is enhanced. Can effectively cover the copper bar that concatenates that exposes outside, prevent personnel's touching, play the protection and keep apart the effect.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (5)
1. The utility model provides a big shell frame moulded case circuit breaker tandem connection mechanism of direct current which characterized in that: the copper bar comprises at least one tandem copper bar, wherein the tandem copper bar comprises a U-shaped copper bar and a straight copper bar; the U-shaped copper bar and the straight copper bar are both rectangular, one end of the U-shaped copper bar is provided with at least one rectangular notch which is sunken to be close to the other end of the U-shaped copper bar, the rectangular notch penetrates through the upper side and the lower side of the U-shaped copper bar, and the rectangular notch divides one end of the U-shaped copper bar with the rectangular notch into at least two mounting heads which are arranged at intervals; a plurality of first heat dissipation grooves which are sunken towards the end close to the rectangular opening are uniformly arranged at the other end of the U-shaped copper bar at intervals, and the first heat dissipation grooves penetrate through the upper side and the lower side of the U-shaped copper bar; a plurality of second heat dissipation grooves which are sunken towards the other end of the straight copper bar are uniformly arranged at intervals at one end of the straight copper bar, and the second heat dissipation grooves penetrate through the upper side and the lower side of the straight copper bar; the distance between every two adjacent first radiating grooves is equal to the distance between every two adjacent second radiating grooves; the straight copper bar is parallel to the U-shaped copper bar in a stacked mode and fixed on one side of the U-shaped copper bar, and the first radiating grooves and the second radiating grooves are in one-to-one correspondence from top to bottom.
2. The direct current big-housing molded case circuit breaker series connection mechanism of claim 1, wherein: each the installation head is provided with at least one first installation hole penetrating through the upper side and the lower side of the installation head, the circuit breaker is provided with a second installation hole corresponding to the first installation hole, and the fastener penetrates through the first installation hole and the second installation hole to fixedly connect the tandem copper bar on the circuit breaker.
3. The direct current big-housing molded case circuit breaker series connection mechanism of claim 2, wherein: the tandem connection mechanism further comprises a protective cover arranged on the outer side of the tandem connection copper bar, the protective cover comprises a rectangular baffle, two sides of the baffle opposite to each other in the circumferential direction are respectively provided with a side plate which protrudes and extends outwards in the direction perpendicular to the baffle, and the two side plates are parallel to each other and have the same extending direction; a top plate which protrudes outwards and extends along a direction perpendicular to the baffle plate is arranged on one circumferential side of the baffle plate, the top plate is perpendicular to the side plate, and the top plate and the side plate are positioned on the same side of the baffle plate; the extending end of the top plate is positioned outside the extending end of the side plate; be provided with the mounting groove that runs through relative both sides from top to bottom on the roof, circumference one side of mounting groove is provided with along being on a parallel with the curb plate is to keeping away from the protruding spacing inserted bar that extends of direction of roof, the slot that sets up on spacing inserted bar and the circuit breaker corresponds the cooperation, with will protection casing and circuit breaker fixed connection.
4. The direct current big-housing molded case circuit breaker series connection mechanism of claim 3, wherein: the top plate and the baffle plate are both provided with a plurality of exhaust holes, and the exhaust holes in the top plate penetrate through the upper side and the lower side of the top plate; the exhaust holes in the baffle penetrate through two opposite sides of the baffle along the extending direction parallel to the side plates.
5. The direct current big-housing molded case circuit breaker series connection mechanism of claim 4, wherein: still be provided with the first fixed orifices that runs through relative both sides about it on the roof, be provided with the second fixed orifices on the circuit breaker, the fastener passes in proper order first fixed orifices with the second fixed orifices will protection casing fixed connection is on the circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121377209.1U CN214848432U (en) | 2021-06-21 | 2021-06-21 | Series connection mechanism for direct-current large-shell-frame molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121377209.1U CN214848432U (en) | 2021-06-21 | 2021-06-21 | Series connection mechanism for direct-current large-shell-frame molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214848432U true CN214848432U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121377209.1U Active CN214848432U (en) | 2021-06-21 | 2021-06-21 | Series connection mechanism for direct-current large-shell-frame molded case circuit breaker |
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| Country | Link |
|---|---|
| CN (1) | CN214848432U (en) |
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2021
- 2021-06-21 CN CN202121377209.1U patent/CN214848432U/en active Active
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