Pole and pole-mounted circuit breaker

Abstract

The embodiment of the utility model provides a pole and a pole-mounted circuit breaker. The pole comprises a shell, a capacitor mounting structure and a second connecting piece. The capacitor mounting structure is detachably mounted in the accommodating cavity and comprises an insulating cylinder and a first connecting piece; the insulating cylinder is provided with a capacitor mounting cavity, the capacitor mounting cavity is used for mounting a capacitor, one end of the insulating cylinder is opened to form a communication port, and the communication port is communicated with the capacitor mounting cavity. One end of the first connecting piece is located in the capacitor mounting cavity and electrically connected with the capacitor, the other end of the first connecting piece penetrates through the communication port, extends to the outer side of the insulating cylinder and is detachably connected with the second connecting piece, and the second connecting piece is connected with an inlet wire or an outlet wire of the pole. The pole provided by the embodiment of the utility model is convenient to maintain.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and in particular to a pole and a pole-mounted circuit breaker. Background Art

[0002] In the related art, the pole of the pole-mounted circuit breaker includes capacitors, such as capacitors of voltage sensors and capacitors of energy extraction devices. The capacitors of the voltage sensor (or capacitors of the energy extraction device) and other structures of the pole are integrally molded into a housing by injection molding.

[0003] However, if the capacitor is damaged during the use of the pole-mounted circuit breaker, it is difficult to repair and replace the capacitor, which may cause the entire pole to be scrapped. Utility Model Content

[0004] In view of this, the main purpose of the embodiments of the present application is to provide a pole and a pole-mounted circuit breaker that are easy to maintain.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] A first aspect of an embodiment of the present application provides a pole, the pole comprising:

[0007] A housing having a receiving cavity;

[0008] A capacitor installation structure, wherein the capacitor installation structure is detachably installed in the accommodating cavity; wherein the capacitor installation structure comprises an insulating cylinder and a first connecting member, wherein the insulating cylinder has a capacitor installation cavity, wherein the capacitor installation cavity is used to install a capacitor, and wherein one end of the insulating cylinder is open to form a communication port, wherein the communication port is in communication with the capacitor installation cavity;

[0009] a second connecting member, the second connecting member being disposed in the housing;

[0010] One end of the first connector is located in the capacitor installation cavity and is electrically connected to the capacitor. The other end of the first connector extends through the connecting port to the outside of the insulating cylinder and is detachably connected to the second connector. The second connector is connected to the incoming or outgoing line of the pole.

[0011] In one embodiment, the side wall of the communication port extends toward a side away from the capacitor installation cavity to form a boss protruding relative to the end surface of the insulating cylinder.

[0012] In one embodiment, at least a portion of the outer surface of the insulating cylinder is an electrical creepage zone, and a portion of the electrical creepage zone is convex or concave.

[0013] In one embodiment, a part of the electrical creepage zone is recessed to form a plurality of recessed areas, and the recessed areas are spaced apart along the axial direction of the insulating cylinder to form an umbrella skirt structure; and / or,

[0014] A portion of the electrical creepage zone is recessed and extends along the outer circumference of the insulating cylinder to form an annular recessed area.

[0015] In one embodiment, the outer surface of the insulating cylinder has the electrical creepage area and a flat area with a flat surface, and the flat area is located between the electrical creepage area and the connecting opening to separate the electrical creepage area and the connecting opening.

[0016] In one embodiment, one end of the first connecting member extending to the outside of the insulating cylinder is a threaded end with external threads, and the second connecting member has a threaded hole corresponding to the threaded end, and the threaded end extends into the threaded hole to enable the first connecting member and the second connecting member to be threadedly connected.

[0017] In one embodiment, the capacitor mounting structure is spaced apart from the side wall of the accommodating cavity; along the radial direction of the insulating cylinder, the distance between the insulating cylinder and the side wall of the accommodating cavity is a first distance, and the distance between the first connecting member and the side wall of the accommodating cavity is a second distance, and the size of the second distance is greater than or equal to the size of the first distance.

[0018] In one embodiment, the shell has an installation entrance that can be opened and closed, and the installation entrance and the second connecting member are respectively located at opposite ends of the accommodating cavity, and the installation entrance is connected to the accommodating cavity so that the capacitor installation structure can be installed in the accommodating cavity; the pole also includes a sealing ring, and the sealing ring is sleeved on one end of the capacitor installation structure close to the installation entrance.

[0019] In one embodiment, the cross-sectional area of ​​the insulating cylinder gradually decreases from an end away from the second connector to an end close to the second connector; and / or,

[0020] The insulating cylinder is spaced apart from the side wall of the accommodating cavity, and along the length direction of the insulating cylinder, the distance between the insulating cylinder and the side wall of the accommodating cavity gradually increases from the end away from the second connector to the end close to the second connector.

[0021] A second aspect of an embodiment of the present application provides a pole-mounted circuit breaker, the pole-mounted circuit breaker comprising any of the poles described above.

[0022] The embodiment of the present application provides a pole and a pole-mounted circuit breaker, wherein a capacitor mounting structure comprises an insulating cylinder and a first connector, wherein the insulating cylinder has a capacitor mounting cavity for mounting a capacitor. One end of the first connector is located in the capacitor mounting cavity and is electrically connected to the capacitor, and the other end of the first connector extends to the outside of the insulating cylinder through the connecting port and is detachably connected to the second connector, and the second connector is connected to the incoming or outgoing line of the pole. Thus, the capacitor is accommodated by the insulating cylinder, and is detachably connected to the second connector by the first connector, so that the capacitor mounting structure can be detachably mounted in the housing of the pole, rather than being integrally molded with the housing by injection molding. Moreover, since the capacitor mounting cavity is used to mount the capacitor, the capacitor can also be detachable relative to the housing. It can be seen from this that in the case of damage to the capacitor, only the capacitor mounting structure can be taken out of the housing of the pole to repair and replace the capacitor in the capacitor mounting structure without replacing the entire pole, which can avoid the problem of the pole being scrapped as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a pole according to an embodiment of the present application;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure of the middle pole without the shell;

[0025] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0026] Figure 4 for Figure 2 A schematic diagram of the structure of the capacitor installation structure, showing the sealing ring;

[0027] Figure 5 for Figure 1 A cross-sectional view of the middle pole, showing only part of the structure;

[0028] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0029] Description of Reference Numerals

[0030] 10. Shell; 10a. Accommodating cavity; 10b. Installation entrance; 20. Capacitor installation structure; 21. Insulating cylinder;

[0031] 21a, capacitor installation cavity; 21b, communication port; 21c, electrical creepage area; 21d, flat area; 211, boss;

[0032] 22, first connecting piece; 221, threaded end; 30, incoming wire; 40, outgoing wire; 50, second connecting piece;

[0033] 60. Sealing ring; 70. Capacitor. DETAILED DESCRIPTION

[0034] An embodiment of the present application provides a capacitor installation structure 20, see Figure 3 and Figure 4 The capacitor mounting structure 20 is detachably mounted in the housing 10 of the pole, and the capacitor mounting structure 20 includes an insulating cylinder 21 and a first connecting member 22 .

[0035] See also Figure 5 and Figure 6 The insulating cylinder 21 has a capacitor installation cavity 21a, and the capacitor installation cavity 21a is used to install the capacitor 70. One end of the insulating cylinder 21 is opened to form a communication port 21b, and the communication port 21b is connected to the capacitor installation cavity 21a.

[0036] One end of the first connector 22 is located in the capacitor installation cavity 21 a and is electrically connected to the capacitor 70 , and the other end of the first connector 22 extends through the communication port 21 b to the outside of the insulating cylinder 21 and is detachably connected to the housing 10 .

[0037] Another embodiment of the present application provides a pole, see Figure 1 , Figure 2 and Figure 5 The pole includes a shell 10 and a capacitor mounting structure 20 described in any embodiment of the present application. The shell 10 has a receiving cavity 10a, and the capacitor mounting structure 20 is detachably mounted in the receiving cavity 10a.

[0038] Yet another embodiment of the present application provides a pole-mounted circuit breaker, and the pole-mounted circuit breaker includes the pole described in any embodiment of the present application.

[0039] Specifically, the capacitor mounting structure 20 is a structure on the pole for mounting the capacitor 70. The capacitor mounting structure 20 is mounted in the housing 10 of the pole, and is detachable relative to the housing 10. Therefore, in the case where the capacitor 70 is damaged, there is no need to replace the entire pole, and only the capacitor mounting structure 20 needs to be removed from the housing 10 and replaced, or the capacitor 70 in the capacitor mounting structure 20 needs to be replaced.

[0040] The insulating cylinder 21 is a cylinder with an insulating effect, and has a capacitor installation cavity 21a for installing a capacitor 70, such as a capacitor 70 of a voltage sensor, or a capacitor 70 of an energy extraction device.

[0041] It should be noted that the capacitor installation structure 20 itself may not include the capacitor 70, but a capacitor installation cavity 21a is reserved for installing the capacitor 70. In other words, the capacitor 70 is not a part of the capacitor installation structure 20.

[0042] Of course, according to actual conditions, the capacitor installation structure 20 may also include a capacitor 70, which is disposed in the capacitor installation cavity 21a and electrically connected to the first connecting member 22. In other words, the capacitor 70 is a part of the capacitor installation structure 20.

[0043] The communication port 21 b is located at the end of the insulating cylinder 21 , and the capacitor installation cavity 21 a is connected to the outside of the capacitor installation structure 20 through the communication port 21 b.

[0044] The first connector 22 is provided at the communication port 21b, and the capacitor 70 can be electrically connected to the outside through the first connector 22. At the same time, the other end of the first connector 22 away from the capacitor 70 extends to the outside of the insulating cylinder 21 to be detachably connected to the second connector 50. Thus, by providing the first connector 22, on the one hand, the capacitor 70 and the insulating cylinder 21 can be detached from the housing 10 of the pole. In another direction, the capacitor 70 can be electrically connected to the incoming line 30 or the outgoing line 40 of the pole by connecting with the second connector 50 while the capacitor 70 is accommodated in the insulating cylinder 21.

[0045] The specific material of the first connecting member 22 can be determined according to actual conditions, and it needs to have electrical conductivity. For example, the first connecting member 22 is a metal connecting member.

[0046] The specific material of the second connecting member 50 can be determined according to actual conditions, and it needs to have electrical conductivity. For example, the second connecting member 50 is a metal connecting member.

[0047] The incoming line 30 is an incoming line for connecting the pole to the outside world so that the external current can enter the pole. The outgoing line 40 is an outgoing line for connecting the pole to the outside world so that the current can flow out of the pole.

[0048] The second connector 50 can be electrically connected to the incoming line or the outgoing line of the pole by being connected to the incoming line or the outgoing line.

[0049] The second connector 50 may be used to electrically connect the incoming line 30 and the capacitor mounting structure 20 , or may be used to electrically connect the outgoing line 40 and the capacitor mounting structure 20 .

[0050] In some specific implementations, the second connecting member 50 corresponds to the capacitor mounting structure 20 one by one.

[0051] That is, the pole may only be provided with the second connector 50 and the capacitor installation structure 20 electrically connected to the incoming line 30. The pole may also only be provided with the second connector 50 and the capacitor installation structure 20 electrically connected to the outgoing line 40.

[0052] Alternatively, the pole includes at least two second connectors 50 and at least two capacitor mounting structures 20, one of the two second connectors 50 is electrically connected to the outgoing line 40 and one of the two capacitor mounting structures 20. The other of the two second connectors 50 is electrically connected to the incoming line 30 and the other of the two capacitor mounting structures 20.

[0053] When the second connector 50 is electrically connected to the incoming line 30 and the first connector 22 respectively, a path can be formed among the incoming line 30 , the second connector 50 , the first connector 22 and the capacitor 70 .

[0054] When the second connector 50 is electrically connected to the outgoing line 40 and the first connector 22 respectively, a path can be formed among the capacitor 70 , the second connector 50 , the first connector 22 and the outgoing line 40 .

[0055] It should be noted that the number of second connecting wires in the pole for corresponding electrical connection with the incoming wire 30 (or the outgoing wire 40) is not limited, and can be one or more.

[0056] Exemplarily, the pole includes three second connectors 50 and three capacitor mounting structures 20 , wherein the incoming line 30 is electrically connected to only one second connector 50 , and the outgoing lines 40 are electrically connected to two second connectors 50 .

[0057] In other specific embodiments, the number of the second connectors 50 is greater than the number of the capacitor mounting structures 20. Specifically, the number of the second connectors 50 is N, the number of the accommodating cavities 10a is also N, the second connectors 50 correspond to the accommodating cavities 10a one-to-one, and the number of the capacitor mounting structures 20 is M (M is less than N). In this case, the capacitor mounting structures 20 are installed in part of the accommodating cavities 10a, and the capacitor mounting structures 20 are not installed in another part of the accommodating cavities 10a. During the use of the pole-mounted circuit breaker, if a capacitor mounting structure 20 is damaged and difficult to remove, a new capacitor mounting structure 20 can be installed in the remaining accommodating cavities 10a.

[0058] The capacitor mounting structure 20 of the pole of the embodiment of the present application includes an insulating cylinder 21 and a first connector 22, the insulating cylinder 21 has a capacitor mounting cavity 21a for mounting a capacitor 70, one end of the first connector 22 is located in the capacitor mounting cavity 21a, and is electrically connected to the capacitor 70, and the other end of the first connector 22 extends to the outside of the insulating cylinder 21 through the connecting port 21b, and is detachably connected to the second connector 50, and the second connector 50 is connected to the incoming line 30 or the outgoing line 40 of the pole. Thus, the capacitor 70 is accommodated by the insulating cylinder 21, and is detachably connected to the second connector 50 through the first connector 22, so that the capacitor mounting structure 20 can be detachably mounted in the housing 10 of the pole, rather than being integrally molded with the housing 10 by glue injection. In addition, since the capacitor mounting cavity 21a is used to mount the capacitor 70, the capacitor 70 can also be detachable relative to the housing 10. It can be seen that when the capacitor 70 is damaged, only the capacitor mounting structure 20 can be removed from the pole shell 10 to repair and replace the capacitor 70 in the capacitor mounting structure 20 without replacing the entire pole, thereby avoiding the problem of the entire pole being scrapped.

[0059] In one embodiment, please refer to Figure 4 The side wall of the communication port 21 b extends toward a side away from the capacitor installation cavity 21 a to form a boss 211 protruding relative to the end surface of the insulating cylinder 21 .

[0060] Specifically, the side wall in the communication opening 21 b extends toward the side opposite to the capacitor installation cavity 21 a to form a boss 211 . The boss 211 is hollow, and the hollow portion is the communication opening 21 b . The boss 211 protrudes from the end surface of the insulating cylinder 21 .

[0061] The first connecting member 22 is inserted into the communication opening 21b, and the communication opening 21b is extended from both opposite ends of the first connecting member 22 in the axial direction. The side wall of the communication opening 21b protrudes to form a boss 211, which can form a long air gap and prevent partial discharge.

[0062] In one embodiment, please refer to Figure 4 At least part of the outer surface of the insulating cylinder 21 is an electrical creepage zone 21c, and part of the electrical creepage zone 21c is convex or concave. Thus, the insulating effect of the insulating cylinder 21 can be provided.

[0063] Specifically, the electrical creepage area 21 c refers to an area on the outer surface of the insulating cylinder 21 , which is concave or convex on the outer surface to increase the electrical creepage distance.

[0064] According to actual conditions, the entire outer surface of the insulating cylinder 21 along the circumferential direction may be the electrical creepage zone 21c, or part of the outer surface of the insulating cylinder 21 along the circumferential direction may be the electrical creepage zone 21c.

[0065] It should be noted that, according to different actual conditions, the electrical creepage area 21c of the insulating cylinder 21 can be arranged in different forms to enhance the electrical creepage distance.

[0066] For example, see Figure 4 Part of the electrical creepage zone 21c is recessed to form a plurality of recessed areas, and the recessed areas are spaced apart along the axial direction of the insulating cylinder 21 to form an umbrella skirt structure.

[0067] Specifically, the electrical creepage zone 21c is partially recessed to form a plurality of recessed areas, and each recessed area is arranged at intervals along the axial direction. Thus, the surface path of the electrical creepage zone 21c along the axial direction can be increased, thereby increasing the electrical creepage distance of the electrical creepage zone 21c along the axial direction, thereby improving the insulation effect.

[0068] It should be noted that the umbrella skirt structure means that due to the formation of multiple recessed areas, the area between two adjacent recessed areas will protrude relative to the recessed areas, thereby forming one or more protruding areas protruding relative to the recessed areas, namely the umbrella skirt.

[0069] In other embodiments, the electrical creepage area 21c may also be formed in other forms, such as a threaded form, by partially recessing a portion of the area.

[0070] For another example, a portion of the electrical creepage area 21c is recessed and extends along the outer circumference of the insulating cylinder 21 to form an annular recessed area. In other words, the recessed area is an annular area extending around the outer circumference of the insulating cylinder 21, thereby evenly increasing the electrical creepage distances of different areas of the insulating cylinder 21.

[0071] In some embodiments, a portion of the electrical creepage area 21c is recessed to form multiple recessed areas along the outer circumference of the insulating cylinder 21. That is, the recessed area may not be annular but arc-shaped, and the electrical creepage distance is increased by forming multiple recessed areas extending along the circumference.

[0072] For another example, the outer surface of the insulating cylinder 21 has an electrical creepage area 21c and a flat area 21d with a flat surface. The flat area 21d is located between the electrical creepage area 21c and the connecting opening 21b to separate the electrical creepage area 21c from the connecting opening 21b.

[0073] Specifically, the flattened area 21d is relative to the electrical creepage area 21c, and the surface of the flattened area 21d is flat. Since it is not concave or convex, and does not form an umbrella skirt structure, it has good integrity. Compared with the electrical creepage area 21c, the flattened area 21d has a high structural strength.

[0074] The flattened area 21d is provided between the electrical creepage area 21c and the connecting opening 21b, which can greatly enhance the structural strength of the insulating cylinder 21 on the side close to the connecting opening 21b and reduce the risk of damage at the connecting opening 21b.

[0075] It should be noted that the structure of the planarization area 21d can be made of the same material as the electrical creepage area 21c, or can be made of a different material.

[0076] The specific material of the flattened area 21d is not limited. For example, the flattened area 21d is made of nylon plastic material.

[0077] In one embodiment, one end of the first connecting member 22 extending to the outside of the insulating cylinder 21 is a threaded end 221 with external threads, and the second connecting member 50 has a threaded hole corresponding to the threaded end 221, and the threaded end 221 extends into the threaded hole to threadably connect the first connecting member 22 and the second connecting member 50.

[0078] Specifically, the outer surface of the threaded end 221 of the first connector 22 is formed with threads, and the threaded end 221 extends to the outside of the insulating cylinder 21 to cooperate with the threaded hole of the second connector 50. Therefore, by inserting the threaded end 221 into the threaded hole, the first connector 22 and the second connector 50 can be threadedly connected.

[0079] In one embodiment, please refer to Figure 6 The capacitor mounting structure 20 is spaced apart from the side wall of the accommodating cavity 10a. Along the radial direction of the insulating cylinder 21, the distance between the insulating cylinder 21 and the side wall of the accommodating cavity 10a is a first distance, and the distance between the first connecting member 22 and the side wall of the accommodating cavity 10a is a second distance, and the size of the second distance is greater than or equal to the size of the first distance.

[0080] Specifically, the cross-sectional dimension of the accommodation cavity 10 a is greater than the cross-sectional dimension of the capacitor mounting structure 20 , so that the capacitor mounting structure 20 is spaced from the side wall of the accommodation cavity 10 a in the circumferential direction to form a gap.

[0081] The first spacing is the spacing between the insulating cylinder 21 and the side wall of the accommodating cavity 10a, and the second spacing is the spacing between the first connector 22 and the side wall of the accommodating cavity 10a. The size of the second spacing can be greater than the size of the first spacing, or can be equal to the size of the first spacing.

[0082] By making the second spacing larger than the first spacing, the gap between the first connector 22 and the side wall of the accommodating cavity 10a can be increased to be larger than the gap between the insulating cylinder 21 and the side wall of the accommodating cavity 10a, thereby reducing the risk of partial discharge caused by too small a gap at the first connector 22.

[0083] By making the size of the second spacing equal to the size of the first spacing, the side wall of the accommodating cavity 10a can be matched with the shape of the capacitor mounting structure 20 as much as possible, which can facilitate the demoulding of the pole.

[0084] In one embodiment, the insulating cylinder 21 is spaced apart from the side wall of the accommodating cavity 10a, and the distance between the insulating cylinder 21 and the side wall of the accommodating cavity 10a gradually increases from the end away from the second connector 50 to the end close to the second connector 50 along the length direction of the insulating cylinder 21. Thus, the distance between the end of the insulating cylinder 21 close to the second connector 50 and the side wall of the accommodating cavity 10a can be increased, and the air gap can be made larger to reduce the risk of partial discharge.

[0085] The specific shape of the insulating cylinder 21 can be set according to actual conditions.

[0086] Exemplarily, the cross-sectional area of ​​the insulating cylinder 21 gradually decreases from an end away from the second connecting member 50 to an end close to the second connecting member 50 .

[0087] Specifically, by adopting a structure in which the cross-sectional area gradually decreases toward the second connecting member 50, the spacing distance between the insulating cylinder 21 and the side wall of the accommodating cavity 10a can gradually increase, thereby increasing the air gap to improve the insulation effect of the end of the insulating cylinder 21 close to the second connecting member 50.

[0088] It should be noted that the insulating cylinder 21 may be a conical structure or a truncated cone structure, and of course, it may be specifically set according to actual conditions.

[0089] In one embodiment, the side wall of the communication port 21b extends toward the side away from the capacitor installation cavity 21a to form a boss 211 protruding relative to the end surface of the insulating cylinder 21. The spacing distance between the boss 211 and the side wall of the accommodating cavity 10a is a third spacing, and by making the size of the third spacing larger than the size of the first spacing, the risk of partial discharge can also be reduced.

[0090] In one embodiment, please refer to Figure 4 and Figure 5 The housing 10 has an installation inlet 10b that can be opened and closed. The installation inlet 10b and the second connecting member 50 are respectively located at opposite ends of the accommodating cavity 10a. The installation inlet 10b is connected to the accommodating cavity 10a so that the capacitor installation structure 20 can be installed in the accommodating cavity 10a. The pole also includes a sealing ring 60, which is sleeved on one end of the capacitor installation structure 20 near the installation inlet 10b.

[0091] Specifically, by opening the installation entrance 10b, it is convenient to install the capacitor installation structure 20 into the accommodating cavity 10a, or remove the capacitor installation structure 20 from the accommodating cavity 10a. After the capacitor installation structure 20 is installed into the accommodating cavity 10a, by closing the installation entrance 10b, the capacitor installation structure 20 can be installed in the accommodating cavity 10a more stably.

[0092] Installing a sealing ring 60 at one end of the capacitor installation structure 20 close to the installation entrance 10b can improve the sealing effect of the capacitor installation structure 20 close to the installation entrance 10b, while reducing the shaking of the insulating cylinder 21 during transportation and installation, thereby protecting the circuit.

[0093] The specific material of the sealing ring 60 can be set according to actual conditions.

[0094] For example, the sealing ring 60 is a rubber pad or a silicone pad.

[0095] The arrangement of the sealing ring 60 can be set according to actual conditions.

[0096] Exemplarily, the sealing ring 60 is sleeved on the outer surface of the insulating cylinder 21 at one end close to the installation inlet 10 b.

[0097] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in a specific embodiment", or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0098] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A pole, characterized in that: The pole comprises: A housing having a receiving cavity; A capacitor installation structure, wherein the capacitor installation structure is detachably installed in the accommodating cavity; wherein the capacitor installation structure comprises an insulating cylinder and a first connecting member, wherein the insulating cylinder has a capacitor installation cavity, wherein the capacitor installation cavity is used to install a capacitor, and wherein one end of the insulating cylinder is open to form a communication port, wherein the communication port is in communication with the capacitor installation cavity; a second connecting member, the second connecting member being disposed in the housing; One end of the first connector is located in the capacitor installation cavity and is electrically connected to the capacitor. The other end of the first connector extends through the connecting port to the outside of the insulating cylinder and is detachably connected to the second connector. The second connector is connected to the incoming or outgoing line of the pole.

2. The pole according to claim 1, characterized in that: The side wall of the communication port extends toward a side away from the capacitor installation cavity to form a boss protruding relative to the end surface of the insulating cylinder.

3. The pole according to claim 1 or 2, characterized in that: At least a portion of the outer surface of the insulating cylinder is an electrical creepage zone, and a portion of the electrical creepage zone is convex or concave.

4. The pole according to claim 3, characterized in that: Part of the electrical creepage zone is recessed to form a plurality of recessed areas, and the recessed areas are arranged at intervals along the axial direction of the insulating cylinder to form an umbrella skirt structure; and / or, A portion of the electrical creepage zone is recessed and extends along the outer circumference of the insulating cylinder to form an annular recessed area.

5. The pole according to claim 3, characterized in that: The outer surface of the insulating cylinder has the electrical creepage area and a flat area with a flat surface, and the flat area is located between the electrical creepage area and the communicating opening to separate the electrical creepage area from the communicating opening.

6. The pole according to claim 1 or 2, characterized in that: One end of the first connecting member extending to the outside of the insulating cylinder is a threaded end with external threads, and the second connecting member has a threaded hole corresponding to the threaded end, and the threaded end extends into the threaded hole to enable the first connecting member and the second connecting member to be threadedly connected.

7. The pole according to claim 1 or 2, characterized in that: The capacitor mounting structure is spaced apart from the side wall of the accommodating cavity; along the radial direction of the insulating cylinder, the distance between the insulating cylinder and the side wall of the accommodating cavity is a first distance, and the distance between the first connecting member and the side wall of the accommodating cavity is a second distance, and the size of the second distance is greater than or equal to the size of the first distance.

8. The pole according to claim 1 or 2, characterized in that: The shell has an installation entrance that can be opened and closed, and the installation entrance and the second connecting piece are respectively located at opposite ends of the accommodating cavity, and the installation entrance is connected to the accommodating cavity so that the capacitor installation structure can be installed in the accommodating cavity; the pole also includes a sealing ring, which is sleeved on one end of the capacitor installation structure close to the installation entrance.

9. The pole according to claim 1 or 2, characterized in that: The cross-sectional area of ​​the insulating cylinder gradually decreases from the end away from the second connecting member to the end close to the second connecting member; and / or, The insulating cylinder is spaced apart from the side wall of the accommodating cavity, and along the length direction of the insulating cylinder, the distance between the insulating cylinder and the side wall of the accommodating cavity gradually increases from the end away from the second connector to the end close to the second connector.

10. A pole mounted circuit breaker, characterized in that: The pole-mounted circuit breaker comprises the pole according to any one of claims 1-9.

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