Pole and pole-mounted circuit breaker

Abstract

The embodiment of the utility model provides a pole and a pole-mounted circuit breaker, and the pole comprises a first solid sealing body; the conducting rod is fixedly sealed in the first solid sealing body; the current sensor is fixedly sealed in the first fixedly sealed body and is used for measuring the current of the conducting rod; and the capacitor assembly is connected with the conducting rod. According to the pole and the pole-mounted circuit breaker, the bearing capacity of the conducting rod can be reduced, the risk of deformation of the conducting rod is reduced, and therefore the pole and the pole-mounted circuit breaker have the long service life.

Description

Technical Field

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

[0002] The pole of the pole-mounted circuit breaker is usually provided with a conductive rod and electrical components. The conductive rod is used to connect to an external high-voltage circuit. The electrical components include, for example, a current sensor, a voltage sensor, a power extraction device, etc. These electrical components need to be connected to the conductive rod.

[0003] In the related art, the weight of the above electrical components is almost entirely borne by the conductive rod, which causes the conductive rod to be easily deformed during use, thus affecting the service life of the pole and the pole-mounted circuit breaker. Utility Model Content

[0004] In view of this, the embodiments of the present application hope to provide a pole and a pole-mounted circuit breaker that can solve or at least partially solve the above-mentioned problems.

[0005] A first aspect of an embodiment of the present application provides a pole of a pole-mounted circuit breaker, the pole comprising: a shell; a first solid sealing body; a conductive rod, sealed in the first solid sealing body; a current sensor, sealed in the first solid sealing body, for measuring the current of the conductive rod; and a capacitor assembly, connected to the conductive rod.

[0006] In some embodiments, the pole further includes a shell, and the first sealing body is disposed in the shell.

[0007] In some embodiments, the bottom side of the shell is open to expose the bottom end surface of the first solid sealing body, and the bottom end surface of the first solid sealing body is used to abut against an external supporting structure.

[0008] In some embodiments, one or more connecting parts are formed on the bottom end surface of the first sealing body, and the connecting parts are used to be fixed to an external supporting structure.

[0009] In some embodiments, the capacitor assembly includes a connector and a capacitor, wherein the connector is used to connect the capacitor and the conductive rod, wherein at least a portion of the connector is sealed in the first sealing body.

[0010] In some embodiments, the first sealing body forms a receiving cavity for receiving the capacitor assembly, and the pole further includes a second sealing body, which is filled in the receiving cavity to seal the capacitor assembly, and the melting point of the second sealing body is lower than that of the first sealing body.

[0011] In some embodiments, a portion of the connector is sealed in the first sealing body, and another portion of the connector is sealed in the second sealing body.

[0012] In some embodiments, one end of the connector is fixedly connected to the capacitor, and the other end has a threaded structure. The conductive rod is formed with a threaded hole, and the threaded structure is screwed into the threaded hole.

[0013] In some embodiments, the first axial end of the conductive rod is used to connect to the arc extinguishing chamber unit, and the second end extends to the outside of the shell. The capacitor assembly and the current sensor are distributed along the axial direction of the conductive rod and the current sensor is located on a side relatively close to the second end.

[0014] In some embodiments, the pole further includes: an arc extinguishing chamber installation space, and the arc extinguishing chamber unit, wherein the arc extinguishing chamber unit is installed in the arc extinguishing chamber installation space.

[0015] In some embodiments, the pole includes: a flexible connector for connecting the first end to the arc extinguishing chamber unit.

[0016] In some embodiments, the pole further comprises: an installation channel, which is arranged on a side of the arc extinguishing chamber installation space close to the conductive rod, the installation channel and the arc extinguishing chamber installation space both extend along the height direction of the pole, and the installation channel is communicated with the arc extinguishing chamber installation space;

[0017] The first end and the flexible connector both extend into the mounting channel and are located at the top of the mounting channel. A mounting hole is formed on the bottom surface of the first end, and the mounting hole is used to connect with the flexible connector.

[0018] In some embodiments, the top of the arc extinguishing chamber installation space has a through hole, and the upper end of the arc extinguishing chamber unit has a threaded column, the threaded column extends out of the through hole, and is threadedly connected to a fixing part outside the arc extinguishing chamber installation space; at least one circle of grooves is opened on the threaded column, and a water stop ring is arranged in the groove, and the water stop ring is crimped to the hole wall of the through hole.

[0019] A second aspect of an embodiment of the present application provides a pole-mounted circuit breaker, the pole-mounted circuit breaker comprising:

[0020] A mechanism box; and a pole as described in any of the above embodiments, wherein the current sensor and the capacitor assembly are electrically connected to the mechanism box.

[0021] In some embodiments, the bottom end surface of the first sealing body abuts against the mechanism box.

[0022] The pole and the pole-mounted circuit breaker of the embodiment of the present application can reduce the load-bearing of the conductive rod and reduce the risk of deformation of the conductive rod, thereby having a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 2 A side view of a pole according to an embodiment of the present application;

[0025] Figure 3 for Figure 2 AA section diagram of the middle pole;

[0026] Figure 4 This is a schematic structural diagram of a first sealing body according to an embodiment of the present application;

[0027] Figure 5 for Figure 1 Schematic diagram of the bottom surface of the middle pole;

[0028] Figure 6 for Figure 4 A partial enlarged schematic diagram of part B.

[0029] Description of Reference Numerals

[0030] 1. Shell; 2. First solid sealing body; 21. Connecting part; 3. Conductive rod; 3a. First end; 3b. Second end; 3c. Threaded hole; 3d. Connecting hole; 4. Capacitor assembly; 41. Capacitor; 42. Connector; 42a. Threaded structure; 5. Current sensor; 6. Second solid sealing body; 7. Arc extinguishing chamber unit; 71. Vacuum arc extinguishing chamber; 72. Insulating pull rod; 8. Flexible connector; 91. Arc extinguishing chamber installation space; 92. Installation channel; Threaded column 101; Fixing part 102; Water stop ring 103. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features in the utility model will not be described separately.

[0033] In the following description, the terms "first\second\..." are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions "above", "below", "outside" and "inside" are all directions in normal use, and the directions "left" and "right" refer to the left and right directions shown in the specific corresponding schematic diagrams, which may be the left and right directions in normal use or not.

[0034] It should be noted that the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. "Multiple" means greater than or equal to two.

[0035] The embodiment of the present application provides a pole, referring to Figure 1-Figure 4 The pole includes a first sealing body 2, a conductive rod 3, a current sensor 5 and a capacitor component 4.

[0036] The conductive rod 3 is sealed in the first sealing body 2, and the conductive rod 3 is used to connect to the circuit outside the pole. Its specific structure can refer to the relevant technology in the field, and will not be repeated here. The current sensor 5 is also sealed in the first sealing body 2, and is used to measure the current of the conductive rod 3. As an example, the current sensor 5 may include a coil, and the conductive rod 3 may be inserted into the coil, so that the current sensor 5 can measure the current of the conductive rod 3.

[0037] Here, "sealed in the first sealing body 2" means that the above-mentioned components are embedded in the first sealing body 2 through a special embedding technology, so that they form an inseparable whole with the first sealing body 2. As an example, in the actual production and preparation process, the above-mentioned components can be assembled in advance, and then a sealing material such as epoxy resin is poured thereon, and the sealing material forms the first sealing body 2 after solidification, thereby realizing the sealing of the above-mentioned components in the first sealing body 2. Alternatively, the sealing material can be poured into a mold corresponding to the above-mentioned components to form the first sealing body 2, and then the mold is removed, the above-mentioned components are loaded into the first sealing body 2 and cast for a second time, so that the above-mentioned components are sealed in the first sealing body 2.

[0038] The capacitor assembly 4 is connected to the conductive rod, and the capacitor assembly 4 can be used as a voltage sensor and / or an energy-taking device. When the capacitor assembly 4 is used as a voltage sensor, it can measure the voltage of the voltage rod, and the measured voltage can provide a basis for the circuit breaker on the pole. When the capacitor assembly 4 is used as an energy-taking device, it can obtain electrical energy from the conductive rod, and the obtained electrical energy can be used by other electrical components of the pole-mounted circuit breaker.

[0039] As an example, the capacitor assembly 4 may include one or more capacitors 41, and the one or more capacitors 41 may include a power-taking capacitor and / or a pressure-measuring capacitor, so that it can be used as a voltage sensor and / or an energy-taking device. It should be noted that the power-taking capacitor here is defined as a capacitor that can realize at least part of the function of the energy-taking device, rather than a specific type of capacitor. Similarly, the pressure-measuring capacitor is defined as a capacitor that can realize at least part of the function of the voltage sensor, rather than a specific type of capacitor.

[0040] In the relevant technology in this field, the current sensor 5 and the capacitor assembly 4 are usually sealed together to form a module, and then the module is connected to the conductive rod 3. In this way, the weight of the module is basically borne entirely by the conductive rod 3, which causes the conductive rod 3 to be easily deformed during long-term use and reduces its service life.

[0041] In the present embodiment, the conductive rod 3 and the current sensor 5 are sealed together in the first sealing body 2. Thus, the first sealing body 2 and the above-mentioned components sealed therein will form a whole, and the weight of the whole can be borne by the external supporting structure or other parts of the pole, thereby reducing the load-bearing capacity of the conductive rod 3, so that it at least does not need to bear the entire weight of the current sensor 5 and the capacitor assembly 4 at the same time, thereby reducing the risk of deformation of the conductive rod 3 during use, and allowing the pole to have a longer service life.

[0042] In some embodiments, reference Figure 1 The pole further includes a shell 1, and a first sealing body 2 is disposed in the shell 1. In this way, the first sealing body 2 can be protected, further improving the service life of the pole.

[0043] The specific structure of the shell 1 is not limited. As an example, the shell 1 can be formed by pouring rubber, silicone, injection molding material, etc. on the outer surface of the sealing body 2, or can also be prepared separately using a mold.

[0044] In some embodiments, reference Figure 5The bottom side of the housing 1 is open to expose the bottom end surface of the first solid-sealed body 2, and the bottom end surface of the first solid-sealed body 2 is used to abut against the external support structure. In this way, on the one hand, the overall weight of the first solid-sealed body 2 and the components sealed in the first solid-sealed body 2 can be borne by the external support structure, thereby further reducing the load-bearing capacity of the conductive rod 3 and improving the service life of the pole. On the other hand, it is convenient for operators to install and remove related components (such as the arc extinguishing chamber unit 7) through the bottom side of the housing 1.

[0045] The external supporting structure here can be any structure that can provide support for the first encapsulation body 2, such as a mechanism box of a pole-mounted circuit breaker.

[0046] In some other embodiments, the bottom side of the shell 1 may also be closed, and the bottom end surface of the first sealing body 2 may be supported on the bottom surface of the shell 1 .

[0047] In some embodiments, continue to refer to Figure 5 The bottom end surface of the first solid sealing body 2 is formed with one or more connecting parts 21, and the connecting parts 21 are used to be fixed to the external support structure. In this way, the stability of the connection between the first solid sealing body 2 and the external support structure can be improved, and the risk of deformation of the conductive rod 3 can be further reduced.

[0048] The specific structure of the connecting portion 21 is not limited, and it may be a slot, a threaded hole, etc.

[0049] In some other embodiments, the bottom end surface of the first sealing body 2 may also be supported only on the external supporting structure without being fixedly connected.

[0050] In some embodiments, the first sealing body 2 is sealed in the housing 1 , so that the stability of the overall structure of the pole and its insulation performance can be improved.

[0051] As an example, after the first sealing body 2 is formed, a sealing material may be poured into the first sealing body 2 to form the shell 1, so that the first sealing body 2 is sealed in the shell 1. Alternatively, after the first sealing body 2 is placed inside the shell 1, a sealing material may be poured into the gap between the first sealing body 2 and the shell 1, so that the first sealing body 2 is sealed in the shell 1. It should be noted that the melting point of the sealing material used for pouring the shell 1 and the sealing material used for pouring the gap between the first sealing body 2 and the shell 1 should be lower than the melting point of the first sealing body 2, so as to reduce the risk of the first sealing body 2 being damaged due to melting during the pouring process.

[0052] In some embodiments, reference Figure 4The capacitor assembly 4 includes a capacitor 41 and a connector 42, the connector 42 is used to connect the capacitor 41 and the conductive rod 3, and at least a portion of the connector 42 is sealed in the first sealing body 2. In this way, at least a portion of the weight of the capacitor assembly 4 will be borne by the first sealing body 2, further reducing the load-bearing capacity of the conductive rod 3.

[0053] In this embodiment, the connector 42 may be completely sealed in the first sealing body 2, or only a part of it may be sealed in the first sealing body 2. Those skilled in the art may make a choice according to actual conditions. Furthermore, in this embodiment, at least a part of the capacitor 41 may also be sealed in the first sealing body 2 to further reduce the load-bearing capacity of the conductive rod 3.

[0054] In some embodiments, continue to refer to Figure 4 The first sealing body 2 forms a receiving cavity for receiving the capacitor component 4, and the pole also includes a second sealing body 6, which is filled in the receiving cavity to seal the capacitor component 4, and the melting point of the second sealing body 6 is lower than the melting point of the first sealing body 2.

[0055] In this embodiment, the first solid sealing body 2 first forms a housing cavity for the capacitor 4, and then the capacitor assembly 4 is solidified by secondary pouring, rather than directly solidifying the capacitor assembly 4 in the first solid sealing body 2, so that the yield rate can be improved. Furthermore, after the pouring is completed, the second solid sealing body 6, the capacitor 41 and the first solid sealing body 2 will form a whole, thereby further reducing the load-bearing beam of the conductive rod 3. On the other hand, the melting point of the second solid sealing body 6 is lower than the melting point of the first solid sealing body 2, so that the risk of the first solid sealing body 2 being damaged due to melting during the secondary pouring process can be reduced.

[0056] As an example, the second sealing body 6 can be made of epoxy resin of a different type from the first sealing body 2, or the second sealing body 6 can be made of other sealing materials, as long as the second sealing body 6 can meet the sealing requirements and has a melting point lower than that of the first sealing body 2.

[0057] In some embodiments, a portion of the connector 41 is sealed in the first sealing body 2, and the other portion is sealed in the second sealing body 6. In this way, after the first sealing body 2 is formed, a portion of the connector 41 will be exposed to the first sealing body 2. Before casting the second sealing body 6, the capacitor 41 can be connected to the connector 41 first, and then casting can be performed, thereby reducing the displacement of the capacitor 41 in the secondary process and further improving the yield rate.

[0058] In some other embodiments, the connector 42 may not be provided. Before pouring the second solid sealing body 6, the capacitor 41 may only be against the conductive rod 3 without being fixedly connected. In this case, the two will be fixedly connected after the second solid sealing body 6 solidifies. Alternatively, before pouring the second solid sealing body 6, the capacitor 41 and the conductive rod 3 may be fixed with the aid of an external auxiliary structure. After the second solid sealing body 6 solidifies, the external auxiliary structure may be removed. In some other embodiments, the second solid sealing body 6 may not be provided, and the capacitor assembly 4 may be directly sealed in the first solid sealing body 2.

[0059] In some embodiments, reference Figure 6 One end of the connecting piece 42 is fixedly connected to the capacitor 41, such as by welding or threading with the capacitor 41, and the other end of the connecting piece 42 has a threaded structure 42a, and the conductive rod 3 is formed with a threaded hole 3c, and the threaded structure 42a is screwed into the threaded hole 3c, thereby realizing a fixed connection between the capacitor 41 and the conductive rod 3.

[0060] It should be noted that the structure of the connecting member 42 is not limited thereto. For example, the other end of the connecting member 42 may be welded to the conductive rod 3 .

[0061] In some embodiments, reference Figure 4 , the first axial end 3a of the conductive rod 3 is used to connect with the arc extinguishing chamber unit 7, the second end 3b extends to the outside of the housing 1, the capacitor assembly 4 and the current sensor 5 are distributed along the axial direction of the conductive rod 3, and the capacitor assembly 4 is located on a side relatively close to the first end 3a. That is, in actual use, the current sensor 5 is located on a side relatively far away from the arc extinguishing chamber unit 7, and the capacitor assembly 4 is located between the current sensor 5 and the arc extinguishing chamber unit 7, so that the probability of partial discharge can be reduced and the safety and stability of the use of the pole-mounted circuit breaker can be improved.

[0062] As an example, the arc extinguishing chamber unit 7 here may include a vacuum arc extinguishing chamber 71 and an insulating rod 72, one end of the vacuum arc extinguishing chamber 71 may be connected to an external circuit structure, and the other end may be connected to the conductive rod 3 through a flexible connector 8, and the flexible connector 8 is connected to both the insulating rod 72 and the vacuum arc extinguishing chamber 71 under normal use. When a circuit is required to be disconnected, the insulating rod 72 may be pulled, and the insulating rod 72 disconnects the movable end contact from the fixed end contact inside the arc extinguishing chamber unit 7 to achieve a circuit break. The specific structure of the arc extinguishing chamber unit 7 may refer to the relevant technology in the art, and will not be described in detail here.

[0063] In some embodiments, reference Figure 4The pole may include the arc extinguishing chamber unit 7 and the arc extinguishing chamber installation space 91, and the arc extinguishing chamber unit 7 is installed in the arc extinguishing chamber installation space 91. The arc extinguishing chamber installation space 91 may be formed in the first solid sealing body 2, for example, the arc extinguishing chamber installation space 91 may be formed by a mold during the casting of the first solid sealing body 2, or the arc extinguishing chamber installation space 91 may be formed in the housing 1, or the arc extinguishing chamber installation space 91 may be formed by the housing 1 and the first solid sealing body 2.

[0064] The specific structure of the arc extinguishing chamber unit 7 can refer to the description of the relevant parts above, which will not be repeated here.

[0065] In some embodiments, the pole may not be equipped with the arc extinguishing chamber unit 7 mentioned above, but only form an arc extinguishing chamber installation space 91 , and the user may purchase a suitable arc extinguishing chamber unit 7 and install it in the arc extinguishing chamber installation space 91 .

[0066] In some embodiments, the pole includes the above-mentioned flexible connector 8, as described above, and the flexible connector 8 is used to connect the first end 3a to the arc extinguishing chamber unit 7. The specific structure and connection method of the flexible connector 8 can refer to the description of the relevant parts above.

[0067] As an example, the flexible connector 8 may be connected to the conductive rod 3 via a connection structure such as a connection bolt, or may be welded to the conductive rod 3 .

[0068] In some embodiments, the pole further includes a mounting channel 92, which is disposed on a side of the arc extinguishing chamber mounting space 91 close to the conductive rod 3. The mounting channel 92 and the arc extinguishing chamber mounting space 91 both extend in the height direction of the pole, and the mounting channel 92 is connected to the arc extinguishing chamber mounting space 91. The first end 3a of the conductive rod 3 and the flexible connector 8 can both extend into the mounting channel 92 and be located at the top of the mounting channel 92, and a mounting hole 3d is formed on the bottom surface of the first end 3a, and the mounting hole 3d is used to connect with the flexible connector 8.

[0069] In this embodiment, an installation channel 92 is added in the pole, and the installation channel 92 can provide an operating space for the installation of the flexible connector 8, which is convenient for assembly operation. Specifically, since the installation channel 92 and the arc extinguishing chamber installation space 91 both extend along the height direction of the pole and are connected, in actual use, the arc extinguishing chamber unit 7 and the flexible connector 8 can be assembled externally first, and then the arc extinguishing chamber unit 7 and the flexible connector 8 are sent into the arc extinguishing chamber installation space 91 and the installation channel 92 through the bottom side of the pole (such as the open part of the bottom side of the housing 1 mentioned above) for assembly.

[0070] Further, the flexible connector 8 can be connected to the conductive rod 3 by means of the mounting hole 3d on the bottom surface of the first end 3a. As an example, the mounting hole 3d can be a threaded hole, and the flexible connector 8 can have a threaded structure for connecting with the mounting hole 3d, or the flexible connector 8 can be connected to the mounting hole 3d by a connector such as a bolt. After the arc extinguishing chamber unit 7 and the flexible connector 8 are sent into the arc extinguishing chamber installation space 91 and the installation channel 92, the operator can complete the connection between the conductive rod 3 and the flexible connector 8 through the installation channel 92.

[0071] Furthermore, the top of the arc extinguishing chamber installation space 91 has a through hole, and the upper end of the arc extinguishing chamber unit 7 has a threaded column 101, which extends out of the through hole and is threadedly connected to a fixing member 102 outside the arc extinguishing chamber installation space 91; the threaded column 101 is provided with at least one circle of grooves, and a water stop ring 103 is provided in the groove, and the water stop ring 103 is press-fitted with the hole wall of the through hole. The so-called press-fitting specifically means that the water stop ring and the hole wall of the through hole are in contact with each other, and the two are pressed against each other.

[0072] The embodiments of the present application further provide a pole-mounted circuit breaker, which includes a mechanism box and a pole as described in any of the above embodiments, and the current sensor 5 and / or the capacitor assembly 4 are electrically connected to the mechanism box.

[0073] As an example, the pole-mounted circuit breaker may include three poles, and the three poles are respectively used for electrical connection with three phases.

[0074] The electrical signals of the current sensor 5 and / or the voltage sensor are transmitted to the terminal FTU. The terminal FTU decides whether it is necessary to send a circuit-breaking signal to the mechanism box based on the electrical signals. After receiving the circuit-breaking signal from the terminal FTU, the mechanism box performs the circuit-breaking operation. The specific structure of the mechanism box can refer to the relevant technology in the field and will not be repeated here.

[0075] In some embodiments, the bottom end surface of the first sealing body 2 can be against the mechanism box, that is, the mechanism box can be used as the external support structure mentioned above, thereby improving the service life of the pole and helping to simplify the structure of the pole-mounted circuit breaker.

[0076] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. 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.

[0077] 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 shall be included in the protection scope of the present application.

Claims

1. A pole of a pole-mounted circuit breaker, characterized in that: The pole comprises: a first sealing body; A conductive rod, sealed in the first sealing body; a current sensor, sealed in the first sealing body, for measuring the current of the conductive rod; and A capacitor component is connected to the conductive rod.

2. The pole according to claim 1, characterized in that: The pole also includes: A shell, wherein the first sealing body is disposed in the shell.

3. The pole according to claim 2, characterized in that: The bottom side of the shell is open to expose the bottom end surface of the first solid sealing body, and the bottom end surface of the first solid sealing body is used to abut against an external supporting structure.

4. The pole according to claim 3, characterized in that: One or more connecting parts are formed on the bottom end surface of the first sealing body, and the connecting parts are used to be fixed to an external supporting structure.

5. The pole according to claim 1, characterized in that: The capacitor assembly includes a connector and a capacitor, wherein the connector is used to connect the capacitor and the conductive rod, wherein at least a portion of the connector is sealed in the first sealing body.

6. The pole according to claim 5, characterized in that: The first sealing body forms a receiving cavity for receiving the capacitor, and the pole further comprises a second sealing body, which is filled in the receiving cavity to seal the capacitor, and the melting point of the second sealing body is lower than that of the first sealing body.

7. The pole according to claim 6, characterized in that: A portion of the connecting member is sealed in the first sealing body, and another portion of the connecting member is sealed in the second sealing body.

8. The pole according to claim 5, characterized in that: One end of the connecting piece is fixedly connected to the capacitor, and the other end has a threaded structure. The conductive rod is formed with a threaded hole, and the threaded structure is screwed into the threaded hole.

9. The pole according to claim 5, characterized in that: The capacitor includes a pressure measuring capacitor and / or a power taking capacitor.

10. The pole according to claim 2, characterized in that: The first axial end of the conductive rod is used to connect to the arc extinguishing chamber unit, and the second end extends to the outside of the shell. The capacitor assembly and the current sensor are distributed along the axial direction of the conductive rod, and the current sensor is located on a side relatively close to the second end.

11. The pole according to claim 10, characterized in that: The pole also includes: Arc extinguishing chamber installation space; The arc extinguishing chamber unit is installed in the arc extinguishing chamber installation space.

12. The pole according to claim 11, characterized in that: The pole comprises: A flexible connector is used to connect the first end to the arc extinguishing chamber unit.

13. The pole according to claim 12, characterized in that: The pole also includes: An installation channel is arranged on a side of the arc extinguishing chamber installation space close to the conductive rod, the installation channel and the arc extinguishing chamber installation space both extend along the height direction of the pole, and the installation channel is communicated with the arc extinguishing chamber installation space; The first end and the flexible connector both extend into the mounting channel and are located at the top of the mounting channel. A mounting hole is formed on the bottom surface of the first end, and the mounting hole is used to connect with the flexible connector.

14. The pole according to claim 11, characterized in that: The top of the arc extinguishing chamber installation space is provided with a through hole, and the upper end of the arc extinguishing chamber unit is provided with a threaded column, the threaded column extends out of the through hole, and is threadedly connected with a fixing part outside the arc extinguishing chamber installation space; at least one circle of grooves is opened on the threaded column, and a water stop ring is arranged in the groove, and the water stop ring is crimped with the hole wall of the through hole.

15. A pole mounted circuit breaker, characterized in that: The pole mounted circuit breaker comprises: Institutional boxes; and The pole according to any one of claims 1 to 14, wherein the current sensor and the capacitor assembly are electrically connected to the mechanism box.

16. The pole mounted circuit breaker according to claim 15, characterized in that The bottom end surface of the first sealing body abuts against the mechanism box.

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