Solid-sealed polar pole for vacuum circuit breaker and vacuum circuit breaker

Abstract

The utility model provides a vacuum circuit breaker and a solid-sealed polar pole, the solid-sealed polar pole comprises: an insulating housing having an upper outgoing line cylinder and a lower outgoing line cylinder, at least a part of an upper outgoing line being located in the upper outgoing line cylinder, at least a part of a lower outgoing line seat being located in the lower outgoing line cylinder, the upper outgoing line and the lower outgoing line being electrically connected to a vacuum arc extinguish chamber; the vacuum arc-extinguishing chamber is positioned in the insulating shell, and the vacuum arc-extinguishing chamber is provided with a movable conducting rod; the movable conducting rod is arranged on the conductive clamp in a penetrating manner; the flexible connecting piece is connected to the conductive clamp and the lower outgoing line; the solid-sealed polar pole further comprises a front side heat dissipation channel located between the upper wire outlet cylinder and the lower wire outlet cylinder, the front side heat dissipation channel extends in the axial direction of the insulation shell, and the front side heat dissipation channel is communicated with the inner cavity of the insulation shell through a first opening in the insulation shell. Therefore, the heat dissipation effect is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of power system, especially is used for vacuum circuit breaker's solid seal pole and vacuum circuit breaker. BACKGROUND

[0002] The vacuum circuit breaker is an important component in the switch cabinet, which usually includes an insulating housing, a vacuum arc-extinguishing chamber, a conductive clamp, and a flexible connecting piece. The insulating housing has an upper outgoing line cylinder and a lower outgoing line cylinder. The upper outgoing line cylinder corresponds to an upper outgoing line seat, and the lower outgoing line cylinder corresponds to a lower outgoing line seat. The vacuum arc-extinguishing chamber is located in the insulating housing. The vacuum arc-extinguishing chamber has a static contact and a dynamic contact in its inner cavity. More specifically, the static contact includes a static contact piece and a static contact rod, and the dynamic contact includes a dynamic contact piece and a dynamic contact rod. The dynamic contact rod can drive the dynamic contact piece to contact the static contact piece to close or move away from the static contact piece to open.

[0003] During the operation of the vacuum circuit breaker, a large amount of heat will be generated, especially when the rated current is larger, the heat will be more. Therefore, how to better dissipate heat becomes a problem to be solved. SUMMARY

[0004] Therefore, the utility model provides a solid seal pole for vacuum circuit breaker, including:

[0005] An insulating housing has an upper outgoing line cylinder and a lower outgoing line cylinder. At least a part of the upper outgoing line is located in the upper outgoing line cylinder, and at least a part of the lower outgoing line is located in the lower outgoing line cylinder. The upper outgoing line and the lower outgoing line are electrically connected to the vacuum arc-extinguishing chamber.

[0006] A vacuum arc-extinguishing chamber is located in the insulating housing. The vacuum arc-extinguishing chamber has a dynamic conductive rod.

[0007] A conductive clamp is provided with the dynamic conductive rod.

[0008] A flexible connecting piece is connected to the conductive clamp and the lower outgoing line.

[0009] The solid seal pole further includes:

[0010] A front side heat dissipation channel is located between the upper outgoing line cylinder and the lower outgoing line cylinder. The front side heat dissipation channel extends along the axial direction of the insulating housing. The front side heat dissipation channel is connected to the inner cavity of the insulating housing through a first opening on the insulating housing.

[0011] By providing a front side heat dissipation channel on the front surface of the solid seal pole, the heat dissipation effect of the solid seal pole is better.

[0012] According to the solid-seal pole as described above, optionally, the second opening of the front-side heat dissipation channel faces the upper outgoing line cylinder. Such a structure is relatively simple to process.

[0013] According to the solid-seal pole as described above, optionally, the front-side heat dissipation channel comprises:

[0014] An insulating U-shaped baffle is arranged around the first opening and extends towards the upper outgoing line cylinder, and the insulating U-shaped baffle is fixed to the insulating shell;

[0015] An insulating movable cover is arranged on the insulating U-shaped baffle and has a preset spacing with the insulating shell, and the insulating U-shaped baffle, the insulating movable cover and the insulating shell form the front-side heat dissipation channel.

[0016] In this way, not only is the structure simple, but also the front-side forward core-pulling method can be used for opening, which is convenient for opening the mold and easy to realize.

[0017] According to the solid-seal pole as described above, optionally, the insulating movable cover is provided with a clamping portion, the insulating U-shaped baffle is provided with a through hole, and the clamping portion can be clamped in the through hole. Such a structure is relatively easy to implement, easy to install, and has a relatively low cost.

[0018] According to the solid-seal pole as described above, optionally, the insulating movable cover is provided with a clamping rib on the side facing the first opening, and the edge of the insulating U-shaped baffle is located between the clamping rib and the edge plate of the insulating movable cover. Such a setting not only makes the insulating movable cover more difficult to fall off the insulating U-shaped baffle, but also increases the insulation distance.

[0019] According to the solid-seal pole as described above, optionally, the soft connecting piece is fixed to the conductive clamp by a bolt. Compared with the welding method, less material of the soft connecting piece is consumed, which is conducive to reducing the cost and the process is simpler.

[0020] According to the solid-seal pole as described above, optionally, the insulating U-shaped baffle is integrally formed with the insulating shell.

[0021] According to the solid-seal pole as described above, optionally, it further comprises a reinforcing rib arranged on the inner wall of the insulating shell, and the reinforcing rib surrounds the lower opening and extends to the insulating U-shaped baffle. In this way, the strength of the insulating shell near the first opening can be enhanced.

[0022] According to the solid-seal pole as described above, optionally, the reinforcing rib has an opening below the lower outgoing line cylinder. In this way, the airflow can be avoided, and the heat dissipation effect is better.

[0023] According to the solid-seal pole column as described above, optionally, a front end heat dissipation fin is arranged on the conductive clamp, and the front end heat dissipation fin extends towards the direction of the front side heat dissipation channel. Due to the front end heat dissipation fin, the conductive clamp has better heat dissipation effect, and the overall heat dissipation effect of the vacuum circuit breaker is better.

[0024] According to the solid-seal pole column as described above, optionally, the second opening has a preset interval with the upper outgoing line cylinder; and / or;

[0025] The first opening is attached to the top of the lower outgoing line cylinder.

[0026] The utility model further provides a vacuum circuit breaker, including the solid-seal pole column for vacuum circuit breaker as any one of the above. BRIEF DESCRIPTION OF DRAWINGS

[0027] The preferred embodiments of the utility model will be described in detail below with reference to the drawings, so that the above and other features and advantages of the utility model are more apparent to those skilled in the art, and the drawings are as follows:

[0028] Figure 1 It is the structure schematic view of the solid-seal pole column for vacuum circuit breaker according to an embodiment of the utility model.

[0029] Figure 2 It is the structure schematic view of the solid-seal pole column for vacuum circuit breaker according to an embodiment of the utility model. Figure 1

[0030] Figure 3 It is the internal structure schematic view of the solid-seal pole column for vacuum circuit breaker according to an embodiment of the utility model. Figure 1

[0031] Figure 4 It is the partial structure schematic view of the solid-seal pole column for vacuum circuit breaker according to an embodiment of the utility model. Figure 1

[0032] It is the structure schematic view of the reinforcing rib. Figure 5

[0033] Wherein, the reference signs are as follows:

[0034] 1-insulating housing

[0035] 11-upper outgoing line cylinder

[0036] 12-lower outgoing line cylinder

[0037] 13-first opening

[0038] 14-reinforcing rib

[0039] 141-aperture

[0040] 21-upper outgoing line seat​​​

[0041] 22-Lower Outlet Connector

[0042] 3-Vacuum interrupter

[0043] 30-Conductive Clip

[0044] 31-Moving conductive rod

[0045] 32-Insulated Tie Rod

[0046] 4-Flexible connector

[0047] 5-Front side heat dissipation channel

[0048] 51-Second Opening

[0049] 52-Insulating U-shaped baffle

[0050] 521-Through Hole

[0051] 53-Insulated movable cover

[0052] 531-Kaleng

[0053] 532-Edge Plate

[0054] 533-Connector

[0055] 61- Rear heat dissipation channel

[0056] 62-Side heat dissipation channel

[0057] 71-Front-end heatsink

[0058] 72-Conductive Clip Heatsink

[0059] 73- Rear heatsink

[0060] 74-Lower conductive heat sink

[0061] 8-bolts Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this utility model clearer, the following embodiments are provided to further illustrate this utility model in detail. The nouns and pronouns referring to "person" in this patent application are not limited to specific genders.

[0063] This utility model provides a solid-sealed pole for a vacuum circuit breaker, comprising an insulating housing 1, a vacuum interrupter 3, a conductive clamp, and a flexible connector 4. The insulating housing 1 has an upper lead-out cylinder 11 and a lower lead-out cylinder 12. At least a portion of the upper lead-out wire is located in the upper lead-out cylinder 11, and at least a portion of the lower lead-out wire is located in the lower lead-out cylinder 12. Both the upper and lower lead-out wires are electrically connected to the vacuum interrupter 3. As an example, ... Figure 1As shown, the upper outgoing line includes an upper outgoing line seat 21 electrically connected to the vacuum interrupter 3, the lower outgoing line includes a lower outgoing line seat 22 and a lower conducting part (not shown in the figure), the upper outgoing line cylinder 11 can cover at least a part of the upper outgoing line seat 21, the lower outgoing line cylinder 12 can cover at least a part of the lower outgoing line seat 22, thereby meeting the requirement of insulation. In addition, the upper outgoing line seat 21 and the lower outgoing line seat 22 are both used for connecting external equipment. The vacuum interrupter 3 is located in the insulating shell 1, and the vacuum interrupter 3 has a movable conducting rod 31. The movable conducting rod 31 is arranged in a conducting clamp 30, the conducting clamp 30 can move with the movable conducting rod 31, an insulating pull rod 32 is connected with the movable conducting rod 31, and the insulating pull rod 32 can drive the movable conducting rod 31 to move. A soft connecting piece 4 connects the conducting clamp 30 and the lower outgoing line, more specifically, the soft connecting piece 4 connects the conducting clamp 30 and the lower conducting part, since the conducting clamp 30 can move, the soft connecting piece 4 is needed for connection. The material of the soft connecting piece 4 is, for example, copper. The above-mentioned structures are all structures in the prior art, and will not be described here in detail.

[0064] As shown in Figure 1 and Figure 2 The solid-sealed pole of the utility model further includes a front-side heat dissipation channel 5, which is located between the upper outgoing line cylinder 11 and the lower outgoing line cylinder 12, extends along the axial direction D of the insulating shell 1, and is communicated with the inner cavity of the insulating shell 1 through the first opening 13 on the insulating shell 1.

[0065] The existence of the front-side heat dissipation channel 5 is equivalent to that a ventilation opening is formed on the front side of the solid-sealed pole, and the conducting loop is basically concentrated on the front side of the pole, so the front-side heat dissipation channel 5 corresponding to the concentrated area of the heat source can better dissipate heat. Moreover, the front-side heat dissipation channel 5 can be used in combination with the rear-side heat dissipation channel 61 on the back side of the solid-sealed pole and the side-side heat dissipation channel 62 on the side of the solid-sealed pole, so that the heat dissipation effect is better. Figure 3 As shown, the left arrow A represents the flow direction of the hot air flow corresponding to the front-side heat dissipation channel 5, and the right arrow B represents the flow direction of the hot air flow corresponding to the rear-side heat dissipation channel 61. The front-side heat dissipation channel 5 is communicated with the outside, specifically through the second opening 51.

[0066] Optionally, the second opening 51 of the front-side heat dissipation channel 5 faces the upper outgoing line cylinder 11, and such a structure is relatively simple to process. In addition, since the hot air flow is upward, the second opening 51 facing the upper outgoing line cylinder 11 is also conducive to the hot air flow being discharged from the front-side heat dissipation channel 5 as soon as possible.

[0067] As an exemplary illustration, the first opening 13 is attached to the top of the lower outgoing line cylinder 12, so that the hot air flow in the insulating shell 1 enters the front-side heat dissipation channel 5 from the first opening 13 as soon as possible, and the heat dissipation effect is better.

[0068] As another example, the second opening 51 can have a preset distance from the upper outgoing line cylinder 11, so that the hot air flow can diffuse outward after leaving the second opening 51, not only making the heat dissipation effect good, but also avoiding the influence of the hot air flow on the upper outgoing line cylinder 11.

[0069] According to the utility model, the front side heat dissipation channel 5 is arranged on the front surface of the solid seal pole, so that the heat dissipation effect of the solid seal pole is better.

[0070] Optionally, the front side heat dissipation channel 5 comprises an insulating U-shaped baffle 52 and an insulating movable cover 53. The insulating U-shaped baffle 52 is arranged around the first opening 13 and extends to the upper outgoing line cylinder 11, and the insulating U-shaped baffle 52 is fixed on the insulating shell 1. As an example, the insulating U-shaped baffle 52 is integrally formed with the insulating shell 1. The insulating movable cover 53 is arranged on the insulating U-shaped baffle 52 and has a preset distance from the insulating shell 1, and the insulating U-shaped baffle 52, the insulating movable cover 53 and the insulating shell 1 form the front side heat dissipation channel 5. The presence of the insulating movable cover 53 indicates that the insulating movable cover 53 is separately installed, for example, by a buckle to the insulating U-shaped baffle 52. The combination of the insulating movable cover 53 and the insulating U-shaped baffle 52 not only has a simple structure, but also can be opened by the front side forward core pulling method, which is convenient for opening and easy to realize.

[0071] More specifically, the insulating movable cover 53 is provided with a clamping portion 533, and the insulating U-shaped baffle 52 is provided with a through hole 521, and the clamping portion 533 can be clamped in the through hole 521, as shown in Figure 4 Such a structure is easy to realize, convenient to install and low in cost. The staff can hold the insulating movable cover 53 and buckle the insulating movable cover 53 to the insulating U-shaped baffle 52. In this process, the clamping portion 533 is first subjected to the thrust of the insulating U-shaped baffle 52 and deforms to a certain extent. When the clamping portion 533 reaches the position of the through hole 521, the clamping portion 533 enters the through hole 521, so that the insulating movable cover 53 is fixed to the insulating U-shaped baffle 52. Such a way of installation is more convenient, and the insulating movable cover 53 is not easy to fall off.

[0072] As an example, the side of the insulating movable cover 53 facing the first opening 13 is provided with a clamping edge 531, and the edge of the insulating U-shaped baffle 52 is located between the clamping edge 531 and the edge plate 532 of the insulating movable cover 53. Such a setting not only makes the insulating movable cover 53 more difficult to fall off from the insulating U-shaped baffle 52, but also can increase the insulation distance.

[0073] As an exemplary illustration, the soft connection 4 is fixed to the conductive clamp 30 by means of a bolt 8. The bolt 8 is used to connect the soft connection 4 and the conductive clamp 30, compared with the welding mode, the material of the soft connection 4 consumed is less, which is beneficial to reduce the cost, and the process is simpler. The material of the soft connection 4 is copper for example.

[0074] Optionally, the sealed pole further comprises a reinforcing rib 14, which is arranged on the inner wall of the insulating shell 1, and the reinforcing rib 14 surrounds the lower opening and extends to the insulating U-shaped baffle 52. Since the first opening 13 is opened on the insulating shell 1, to some extent, the strength of the insulating shell 1 near the first opening 13 is reduced, and therefore the reinforcing rib 14 can be added to enhance the strength of the insulating shell 1 near the first opening 13. As shown in the figure, the reinforcing rib 14 is integrally formed with the insulating shell 1, and extends to the insulating U-shaped baffle 52. It can be understood that the reinforcing rib 14 is also integrally formed with the insulating U-shaped baffle 52, so that the processing technology is relatively simple and easy to realize. As an exemplary illustration, the reinforcing rib 14 has an opening 141 below the lower outgoing line cylinder 12, which can avoid blocking the airflow, so that the heat dissipation effect is better. Figure 5

[0075] Optionally, the sealed pole further comprises a front end fin 71, which is arranged on the conductive clamp 30 and extends towards the direction of the front side heat dissipation channel 5. Due to the existence of the front side heat dissipation channel 5, there is space in the inside of the insulating shell 1 to accommodate the front end fin 71, which can be seen from the figures. Figure 2 Figure 3 Due to the existence of the front end fin 71, the conductive clamp 30 has better heat dissipation effect, and thus the overall heat dissipation effect of the vacuum circuit breaker is better. In addition, as can be seen from the figures, the conductive clamp 30 also has a side conductive clamp fin 72, a rear end fin 73 and a lower conductive piece fin, which can all assist the connected conductors to dissipate heat. Figure 3

[0076] The utility model also provides a kind of vacuum circuit breaker, and the vacuum circuit breaker includes the sealed pole for vacuum circuit breaker of any example described above.

[0077] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.​​​

Claims

1. A sealed pole for vacuum circuit breaker, comprising: an insulating housing (1) having an upper outgoing line cylinder (11) and a lower outgoing line cylinder (12), at least a part of an upper outgoing line being located in the upper outgoing line cylinder (11), at least a part of a lower outgoing line seat being located in the lower outgoing line cylinder (12), the upper outgoing line and the lower outgoing line being electrically connected to a vacuum arc-extinguishing chamber (3); the vacuum arc-extinguishing chamber (3) being located in the insulating housing (1), the vacuum arc-extinguishing chamber (3) having a movable conducting rod (31); a conducting clamp (30), the movable conducting rod (31) being arranged in the conducting clamp (30); a flexible connecting piece (4) being connected to the conducting clamp and the lower outgoing line; characterized in that the sealed pole further comprises: a front side heat dissipation channel (5) being located between the upper outgoing line cylinder (11) and the lower outgoing line cylinder (12), the front side heat dissipation channel (5) extending along an axial direction of the insulating housing (1), the front side heat dissipation channel (5) being communicated with an inner cavity of the insulating housing (1) through a first opening (13) on the insulating housing (1).

2. The deadfront pole as claimed in claim 1, characterized in that a second opening (51) of the front side heat dissipation channel (5) facing the upper outgoing line cylinder (11); and / or the front side heat dissipation channel (5) being communicated with the outside through the second opening (51).

3. The deadfront pole as recited in claim 1, wherein, the front side heat dissipation channel (5) comprising: an insulating U-shaped baffle (52) being arranged around the first opening (13) and extending towards the upper outgoing line cylinder (11), the insulating U-shaped baffle (52) being fixed on the insulating housing (1); an insulating movable cover (53) being arranged on the insulating U-shaped baffle (52) and having a preset distance with the insulating housing (1), the insulating U-shaped baffle (52), the insulating movable cover (53) and the insulating housing (1) forming the front side heat dissipation channel (5).

4. The deadfront pole as claimed in claim 3, wherein, the insulating movable cover (53) being provided with a clamping part (533), the insulating U-shaped baffle (52) being provided with a through hole (521), the clamping part (533) being capable of being clamped in the through hole (521); and / or a clamping edge (531) being provided on a side of the insulating movable cover (53) facing the first opening (13), an edge of the insulating U-shaped baffle (52) being located between the clamping edge (531) and an edge plate (532) of the insulating movable cover (53).

5. The deadfront pole as recited in claim 3, wherein, the flexible connecting piece (4) being fixed on the conducting clamp through a bolt (8); and / or the insulating U-shaped baffle (52) being integrally formed with the insulating housing (1).

6. The deadfront pole as recited in claim 3, wherein, further comprising: a reinforcing rib (14) being arranged on an inner wall of the insulating housing (1), the reinforcing rib (14) surrounding the first opening (13) and extending to the insulating U-shaped baffle (52).

7. The solid-seal pole, as recited in claim 6, characterized in that, the reinforcing rib (14) having an opening (141) below the lower outgoing line cylinder (12).

8. The deadfront pole as recited in claim 1, wherein, further comprising: a front end heat dissipation fin (71) being arranged on the conducting clamp, the front end heat dissipation fin (71) extending towards the front side heat dissipation channel (5).

9. The solid-seal pole piece according to any one of claims 1-8, characterized in that, the first opening (13) abutting against a top of the lower outgoing line cylinder (12).

10. The deadfront pole as recited in claim 2, wherein, The second opening (51) has a preset interval with the upper outgoing line cylinder (11).

11. Vacuum circuit breaker, characterized in that The solid-enclosed pole for vacuum circuit breaker according to any one of claims 1-10.

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