A solid-sealed pole isolation contact seat assembly and switch cabinet

Abstract

The present invention relates to a sealed pole isolating contact seat assembly and a switch cabinet. The sealed pole isolating contact seat assembly includes a sealed pole and an isolating contact seat. The sealed pole includes an insulating shell. The vacuum arc extinguishing chamber is located inside the insulating shell. The vacuum arc extinguishing chamber includes a static end and a moving end. The insulating shell has a moving end active cavity for the moving end to move. The isolating contact seat includes a seat body and a connecting arm connected to the seat body. The seat body is provided with a moving contact through-hole for conducting electricity with the moving contact and for the moving contact to pass through. The connecting arm extends into the moving end active cavity and is electrically connected to the moving end through a flexible connection. The connecting arm is provided with a contact seat heat dissipation channel. The contact seat heat dissipation channel connects the moving contact through-hole and the moving end active cavity, so that the heat of the moving end active cavity can be dissipated through the contact seat heat dissipation channel. The purpose of the present invention is to provide a sealed pole isolating contact seat assembly to solve the problem of temperature rise of the existing sealed pole under natural air cooling conditions.

Description

Technical Field

[0001] The invention relates to a solid-sealed pole isolating contact seat assembly and a switch cabinet. Background Art

[0002] The sealed pole is formed by embedding the vacuum arc chamber and the conductive parts related to the circuit breaker into thermosetting or thermoplastic insulating materials at the same time, so that the entire circuit breaker pole constitutes an integral component. The sealed pole includes an insulating shell and a vacuum arc chamber inside the insulating shell. The upper part of the vacuum arc chamber is the static end, which is connected to the upper outlet terminal. The lower part of the vacuum arc chamber is the moving end. The moving end includes a moving conductive rod, which is connected to the lower outlet terminal through a flexible connection to form a main conductive circuit. Under the condition of high current, the temperature rise of existing sealed poles often exceeds the standard during natural air cooling. Therefore, in order to reduce the temperature rise, fans are often used for forced cooling. However, the use of fans for cooling increases the workload of daily maintenance and reduces the overall reliability of the equipment. Summary of the invention

[0003] The object of the present invention is to provide a sealed pole isolating contact seat assembly to solve the problem of temperature rise of the existing sealed pole under natural air cooling. The present invention also provides a switch cabinet to solve the problem of temperature rise of the existing sealed pole under natural air cooling.

[0004] The technical solution of the solid-sealed pole isolation contact seat assembly of the present invention is:

[0005] The solid-sealed pole isolation contact seat assembly comprises: a solid-sealed pole and an isolation contact seat;

[0006] The sealed pole includes:

[0007] Insulating housing;

[0008] The vacuum interrupter is located inside the insulating shell. The vacuum interrupter includes a static end and a dynamic end. The insulating shell has a dynamic end moving cavity for the dynamic end to move.

[0009] The isolating contact seat comprises a seat body, and the seat body is provided with a moving contact through hole for conducting electricity with the moving contact and for the moving contact to pass through;

[0010] The isolating contact seat also includes a connecting arm connected to the seat body, the connecting arm extends into the movable cavity of the moving end and is electrically connected to the moving end through a flexible connection;

[0011] A contact seat heat dissipation channel is provided on the connecting arm, and the contact seat heat dissipation channel connects the moving contact through-hole and the moving end active cavity, so that the heat of the moving end active cavity can be dissipated through the contact seat heat dissipation channel.

[0012] Beneficial effect: The sealed pole isolation contact seat assembly of the present invention integrates the isolation contact seat and the sealed pole, and connects the moving contact through-hole and the moving end active cavity through the contact seat heat dissipation channel. The heat of the moving end active cavity can flow out from the moving contact through-hole along the contact seat heat dissipation channel, which effectively improves the heat dissipation efficiency of the moving end active cavity, thereby reducing the temperature rise of the sealed pole under natural air cooling conditions.

[0013] Furthermore, the insulating shell is provided with a pole heat dissipation hole connecting the movable cavity of the moving end with the outside.

[0014] Beneficial effect: The setting of the pole heat dissipation hole further improves the heat dissipation efficiency of the moving end active cavity.

[0015] Furthermore, the connecting arm includes an arm body and a conductive connecting seat at one end of the arm body extending into the insulating shell, the conductive connecting seat has a moving end connecting hole, the moving end is conductively connected to the hole wall of the moving end connecting hole through the soft connection, and the conductive connecting seat is provided with a connecting seat heat dissipation hole opposite to the pole heat dissipation hole.

[0016] Beneficial effect: The setting of the conductive connection seat increases the flow area between the connecting arm and the moving end of the vacuum arc extinguishing chamber. In addition, the conductive connection seat is provided with a connection seat heat dissipation hole, so that the heat inside the conductive connection seat can flow out through the connection seat heat dissipation hole and dissipate to the outside through the pole heat dissipation hole.

[0017] Furthermore, the opening of the heat dissipation channel of the contact seat on the conductive connection seat is directly opposite to the opening of the heat dissipation hole of the connection seat.

[0018] Beneficial effect: This arrangement can improve the convection effect between the inside of the insulating shell and the outside, and improve the heat dissipation efficiency of the heat inside the insulating shell.

[0019] Furthermore, a ventilation groove is provided on the inner wall of the moving contact through hole, and one end opening of the contact seat heat dissipation channel is located at the bottom of the ventilation groove.

[0020] Beneficial effect: This arrangement makes the distance between the opening at one end of the heat dissipation channel of the contact seat and the moving contact larger, which facilitates the heat to be dissipated from the opening of the heat dissipation channel of the contact seat.

[0021] Furthermore, the ventilation groove is an annular ventilation groove.

[0022] Beneficial effects: The annular ventilation groove has a simple structure and is easy to process and shape.

[0023] Furthermore, the bottom of the ventilation slot is provided with a contact seat heat dissipation hole connecting the outside world and the moving contact through hole.

[0024] Beneficial effect: The setting of the heat dissipation holes of the contact seat facilitates the heat to dissipate outwards, avoids the heat accumulation in the moving contact perforation, and effectively reduces the temperature rise.

[0025] Furthermore, the contact seat heat dissipation holes are provided in plurality.

[0026] Beneficial effect: The arrangement of multiple contact seat heat dissipation holes has higher heat dissipation efficiency.

[0027] Furthermore, a contact finger groove is provided in the moving contact through-hole, and the contact finger groove is used for installing the contact finger.

[0028] Beneficial effect: The flow capacity of the contact finger is stronger, and the flow capacity between the seat body and the moving contact is improved.

[0029] The technical solution of the switch cabinet of the present invention is:

[0030] The switch cabinet includes a sealed pole isolation contact seat assembly, an isolation static contact seat and a moving contact, the moving contact is conductively connected to the sealed pole isolation contact seat assembly, and the moving contact is used to connect with the isolation static contact seat, and the sealed pole isolation contact seat assembly includes a sealed pole and an isolation contact seat;

[0031] The sealed pole includes:

[0032] Insulating housing;

[0033] The vacuum interrupter is located inside the insulating shell. The vacuum interrupter includes a static end and a dynamic end. The insulating shell has a dynamic end moving cavity for the dynamic end to move.

[0034] The isolating contact seat comprises a seat body, and the seat body is provided with a moving contact through hole which is electrically conductive with the moving contact and through which the moving contact passes;

[0035] The isolating contact seat also includes a connecting arm connected to the seat body, the connecting arm extends into the movable cavity of the moving end and is electrically connected to the moving end through a flexible connection;

[0036] A contact seat heat dissipation channel is provided on the connecting arm, and the contact seat heat dissipation channel connects the moving contact through-hole and the moving end active cavity, so that the heat of the moving end active cavity can be dissipated through the contact seat heat dissipation channel.

[0037] Beneficial effect: The sealed pole isolation contact seat assembly of the present invention integrates the isolation contact seat and the sealed pole, and connects the moving contact through-hole and the moving end active cavity through the contact seat heat dissipation channel. The heat of the moving end active cavity can flow out from the moving contact through-hole along the contact seat heat dissipation channel, which effectively improves the heat dissipation efficiency of the moving end active cavity, thereby reducing the temperature rise of the sealed pole under natural air cooling conditions.

[0038] Furthermore, the insulating shell is provided with a pole heat dissipation hole connecting the movable cavity of the moving end with the outside.

[0039] Beneficial effect: The setting of the pole heat dissipation hole further improves the heat dissipation efficiency of the moving end active cavity.

[0040] Furthermore, the connecting arm includes an arm body and a conductive connecting seat at one end of the arm body extending into the insulating shell, the conductive connecting seat has a moving end connecting hole, the moving end is conductively connected to the hole wall of the moving end connecting hole through the soft connection, and the conductive connecting seat is provided with a connecting seat heat dissipation hole opposite to the pole heat dissipation hole.

[0041] Beneficial effect: The setting of the conductive connection seat increases the flow area between the connecting arm and the moving end of the vacuum arc extinguishing chamber. In addition, the conductive connection seat is provided with a connection seat heat dissipation hole, so that the heat inside the conductive connection seat can flow out through the connection seat heat dissipation hole and dissipate to the outside through the pole heat dissipation hole.

[0042] Furthermore, the opening of the heat dissipation channel of the contact seat on the conductive connection seat is directly opposite to the opening of the heat dissipation hole of the connection seat.

[0043] Beneficial effect: This arrangement can improve the convection effect between the inside of the insulating shell and the outside, and improve the heat dissipation efficiency of the heat inside the insulating shell.

[0044] Furthermore, a ventilation groove is provided on the inner wall of the moving contact through hole, and one end opening of the contact seat heat dissipation channel is located at the bottom of the ventilation groove.

[0045] Beneficial effect: This arrangement makes the distance between the opening at one end of the heat dissipation channel of the contact seat and the moving contact larger, which facilitates the heat to be dissipated from the opening of the heat dissipation channel of the contact seat.

[0046] Furthermore, the ventilation groove is an annular ventilation groove.

[0047] Beneficial effects: The annular ventilation groove has a simple structure and is easy to process and shape.

[0048] Furthermore, the bottom of the ventilation slot is provided with a contact seat heat dissipation hole connecting the outside world and the moving contact through hole.

[0049] Beneficial effect: The arrangement of the heat dissipation holes of the contact seat facilitates the heat to be dissipated outwards, avoids the heat accumulation in the moving contact perforation, and reduces the temperature rise.

[0050] Furthermore, the contact seat heat dissipation holes are provided in plurality.

[0051] Beneficial effect: The arrangement of multiple contact seat heat dissipation holes has higher heat dissipation efficiency.

[0052] Furthermore, a contact finger groove is provided in the moving contact through-hole, and a contact finger is installed in the contact finger groove.

[0053] Beneficial effect: The flow capacity of the contact finger is stronger, and the flow capacity between the seat body and the moving contact is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a cross-sectional view of the first embodiment of the solid-sealed pole isolation contact seat assembly of the present invention;

[0055] Figure 2 This is a structural diagram of the isolation contact seat;

[0056] Figure 3 It is a cross-sectional view of the isolation contact seat;

[0057] Figure 4 It is a schematic diagram of the connection between the sealed pole isolation contact seat assembly and the moving contact and the isolation static contact seat;

[0058] Figure 5 This is the structural diagram of the isolation static contact seat;

[0059] Figure 6 for Figure 5 Bottom view of .

[0060] In the figure: 1. Insulating shell; 2. Vacuum interrupter; 3. Moving conductive rod; 4. Insulating pull rod; 5. Conductive block; 6. Moving end movable cavity; 7. Isolating contact seat; 71. Seat body; 72. Arm body; 73. Conductive connecting seat; 8. Moving end connecting hole; 9. Flexible connection; 10. Connecting seat heat dissipation hole; 11. Pole heat dissipation hole; 12. Moving contact perforation; 13. Moving contact; 14. Contact finger groove; 15. Contact finger; 16. Annular ventilation groove; 17. Contact seat heat dissipation hole; 18. Contact seat heat dissipation channel; 19. Gear; 20. Rack; 21. Isolating static contact seat; 211. Static contact column; 212. Terminal block; 213. Insulator; 22. Insertion channel; 23. Ventilation port; 24. Contact heat dissipation channel. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0062] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0063] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" 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 other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0064] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0065] Specific embodiment 1 of the solid-sealed pole isolation contact seat assembly of the present invention:

[0066] like Figure 1 As shown, the sealed pole isolating contact assembly includes a sealed pole and an isolating contact seat 7. The sealed pole includes an insulating shell 1 extending in the up-down direction. A vacuum arc chamber 2 is arranged inside the insulating shell 1. The vacuum arc chamber 2 includes an upper static end and a lower movable end. The movable end slides up and down to achieve connection and disconnection with the static end of the vacuum arc chamber 2. The movable end is located in a movable end movable cavity 6 for the movable end to move up and down in the insulating shell 1. The movable end of the vacuum arc chamber 2 includes a movable conductive rod 3. The movable conductive rod 3 is fastened and assembled with an insulating pull rod 4 by a threaded connection. The insulating pull rod 4 is driven by a driving mechanism of the corresponding circuit breaker. The insulating pull rod 4 drives the movable conductive rod 3 to move back and forth in the up-down direction to achieve the closing and opening operations of the vacuum arc chamber 2.

[0067] A conductive block 5 is fixedly provided on the moving conductive rod 3, and the conductive block 5 is conductively connected to the moving conductive rod 3. The conductive block 5 has a mounting hole for plugging with the moving conductive rod 3. The outer peripheral surface of the moving conductive rod 3 is a conical surface, and the mounting hole on the conductive block 5 is a corresponding conical hole. When the conductive block 5 and the moving conductive rod 3 are assembled, a conical surface fit is formed, and the combination is tight, the current carrying capacity is guaranteed, and the poor contact between the conductive block 5 and the moving conductive rod 3 is effectively avoided.

[0068] like Figure 2 , Figure 3 As shown, the isolating contact seat 7 includes a seat body 71 and a connecting arm, and the connecting arm includes an arm body 72 and a conductive connecting seat 73. The isolating contact seat 7 is integrally formed, and the integrally formed isolating contact seat 7 generates little heat when current is flowing.

[0069] The conductive connection seat 73 is a cylindrical shell, and a movable end connection hole 8 is provided on the cylindrical shell. The movable end of the vacuum arc extinguishing chamber 2 is inserted into the conductive connection seat 73 through the movable end connection hole 8. The conductive block 5 is conductively connected to the hole wall of the movable end connection hole 8 through the soft connection 9. Specifically, the soft connection 9 includes several copper braids, which are arranged around the conductive block 5. One end of the copper braid is connected to the conductive block 5, and the other end is connected to the hole wall of the movable end connection hole 8. In addition, a connection seat heat dissipation hole 10 is provided on the hole wall of the movable end connection hole 8. Correspondingly, a pole heat dissipation hole 11 is provided on the insulating shell 1. The opening of the connection seat heat dissipation hole 10 is opposite to the opening of the pole heat dissipation hole 11. This arrangement facilitates the discharge of heat from the inside of the insulating shell 1. The soft connection 9 is a commonly used soft conductor in this field, which can realize the conductive connection between two relatively moving conductors. In addition to the copper braid, the commonly used soft connections also include copper foil, copper stranded wire, steel belt and other forms.

[0070] The seat body 71 is a cylindrical shell, and a movable contact through hole 12 is provided on the cylindrical shell. The movable contact through hole 12 is used to install the movable contact 13. The inner wall of the movable contact through hole 12 is provided with an annular contact finger groove 14 symmetrically arranged up and down. The contact finger 15 is installed in the contact finger groove 14, and the conductive connection between the seat body 71 and the movable contact 13 is realized through the contact finger 15. In addition, a ventilation groove is provided on the inner wall of the movable contact through hole 12. In this embodiment, the ventilation groove is an annular ventilation groove 16, which is located between the two contact finger grooves 14, and a plurality of contact seat heat dissipation holes 17 are provided on the groove bottom of the annular ventilation groove 16. The provision of the contact seat heat dissipation holes 17 can better dissipate the heat generated between the movable contact 13 and the seat body 71.

[0071] One end of the arm body 72 is connected to the seat body 71, and the other end is connected to the conductive connection seat 73. The arm body 72 is used to realize the conductive connection between the conductive connection seat 73 and the seat body 71. A contact seat heat dissipation channel 18 is provided in the arm body 72. One end of the contact seat heat dissipation channel 18 is connected to the inside of the conductive connection seat 73, and the other end of the opening is connected to the movable contact through hole 12 of the seat body 71. The opening is provided on the bottom of the annular ventilation groove 16. The heat generated inside the movable end active cavity 6 can flow into the annular ventilation groove 16 through the contact seat heat dissipation channel 18 and be discharged through the contact seat heat dissipation hole 17. The heat generated in the movable contact through hole 12 can also flow into the movable end active cavity 6 through the contact seat heat dissipation channel 18 and be discharged through the pole heat dissipation hole 11. In particular, the opening of the contact seat heat dissipation channel 18 on the conductive connection seat 73 is directly opposite to the orifice of the connection seat heat dissipation hole 10, which enhances the convection effect between the movable contact through hole 12, the movable end active cavity 6 and the outside world, and improves the heat dissipation efficiency.

[0072] like Figure 4As shown, the moving contact 13 is installed in the moving contact through hole 12 of the seat body 71 in an up-and-down guided manner. An isolating static contact seat 21 is provided below the moving contact 13. The isolating static contact seat 21 is fixedly installed on the cabinet of the switch cabinet. In the up-and-down movement of the moving contact 13, there is a connection position connected with the isolating static contact seat 21 and an isolation position disconnected from the isolating static contact seat 21. The isolating static contact seat 21 has an insertion channel 22 for inserting the moving contact 13. One end of the insertion channel 22 has a moving contact insertion port for inserting the moving contact 13, and the other end has a vent 23 connected to the outside. There is a contact heat dissipation channel 24 through the moving contact 13. When the moving contact 13 is in the connection position, the contact heat dissipation channel 24 is connected to the insertion channel 22, so that airflow can enter and exit through the insertion channel 22 and the contact heat dissipation channel 24, so as to achieve heat dissipation of the moving contact 13 and the isolating static contact seat 21.

[0073] Specifically, Figure 5 , Figure 6 As shown, the isolation static contact seat 21 includes a static contact column 211 and a terminal 212. The static contact column 211 has an insertion channel 22 for inserting the moving contact 13. One end of the insertion channel 22 is a moving contact insertion port, and the other end has a vent 23 connected to the outside. The terminal 212 is used to connect with the cables in the switch cabinet. The terminal 212 is connected to one end of the static contact column 211 and is arranged at the vent 23 of the static contact column 211. In addition, in order to prevent the cabinet of the switch cabinet from being charged when the isolation static contact seat 21 is connected, the isolation static contact seat 21 also includes an insulator 213 arranged on the outer peripheral surface of the static contact column 211. The static contact column 211 and the terminal 212 are fixed to the cabinet of the switch cabinet through the insulator 213.

[0074] like Figure 4 As shown, the moving contact 13 is a hollow straight tube as a whole, and the internal channel of the hollow straight tube is the contact heat dissipation channel 24. When the moving contact 13 is in the connection position, the contact heat dissipation channel 24, the insertion channel 22 and the vent 23 are interconnected, and the airflow will enter and exit the insertion channel 22 and the contact heat dissipation channel 24 through the vent 23, and the heat generated by the moving contact 13 and the isolated static contact seat 21 will be discharged with the airflow. In addition, the vertical arrangement of the moving contact 13 utilizes the chimney effect, strengthens the convection effect between the contact heat dissipation channel 24 and the insertion channel 22 and the outside world, and the heat generated by the moving contact 13 and the isolated static contact seat 21 can be discharged faster through the contact heat dissipation channel 24 and the insertion channel 22.

[0075] In addition, in order to facilitate the sliding of the moving contact 13 in the moving contact through-hole 12, a gear 19 is installed at the opening of the contact seat heat dissipation channel 18 on the annular ventilation groove 16, and the gear 19 cooperates with the rack 20 arranged along the extending direction of the moving contact 13, so as to realize the up and down movement of the moving contact 13. When the moving contact 13 moves upward until the lower end of the moving contact 13 is separated from the isolation static contact seat 21 to form an isolation fracture, the moving contact 13 is in the isolation position, and the isolation static contact seat 21 and the seat body 71 are in a disconnected state. When the moving contact 13 moves downward until the lower end of the moving contact 13 contacts the isolation static contact seat 21, the moving contact 13 is in a connected position, and the isolation static contact seat 21 and the seat body 71 are in a conductive state.

[0076] The sealed pole isolation contact seat assembly of the present invention connects the moving end active cavity 6 and the moving contact through-hole 12 through the contact heat dissipation channel 24, so that the heat in the moving end active cavity 6 can be discharged from the moving contact through-hole 12 along the contact heat dissipation channel 24, thereby improving the heat dissipation efficiency in the moving end active cavity 6 and effectively reducing the temperature rise of the sealed pole under natural air cooling conditions.

[0077] The specific embodiment 2 of the sealed pole isolation contact seat assembly of the present invention is different from the embodiment 1 introduced above in that the isolation contact seat includes a connecting arm connected to the seat body, and the end face of one end of the connecting arm extending into the movable cavity of the moving end is conductively connected to the moving end through a soft connection.

[0078] The specific embodiment 3 of the sealed pole isolation contact seat assembly of the present invention is different from the embodiment 1 described above in that there are multiple pole heat dissipation holes opened on the insulating shell.

[0079] The specific embodiment 4 of the sealed pole isolation contact seat assembly of the present invention is different from the embodiment 1 introduced above in that the opening of the contact seat heat dissipation channel on the conductive connecting seat is not directly opposite to the opening of the connecting seat heat dissipation hole, and there is a certain size angle between the direction of the contact seat heat dissipation channel opening and the direction of the opening of the connecting seat heat dissipation hole.

[0080] The specific embodiment 5 of the sealed pole isolation contact seat assembly of the present invention is different from the embodiment 1 described above in that no ventilation grooves are provided in the moving contact through-hole, and the contact seat heat dissipation holes are directly provided on the inner wall of the moving contact through-hole.

[0081] The specific embodiment 6 of the sealed pole isolation contact seat assembly of the present invention is different from the embodiment 1 introduced above in that the ventilation groove includes a plurality of arc grooves, and the plurality of arc grooves are arranged around the inner wall of the moving contact through hole.

[0082] The specific embodiment 7 of the sealed pole isolation contact seat assembly of the present invention is different from the embodiment 1 described above in that only a single heat dissipation hole is provided in the contact seat.

[0083] The specific embodiment 8 of the sealed pole isolation contact seat assembly of the present invention is different from the embodiment 1 described above in that no contact finger groove is provided in the moving contact through-hole, and the moving contact is directly conductively connected to the seat body.

[0084] A specific embodiment of the switch cabinet of the present invention comprises a sealed pole isolation contact seat assembly, an isolation static contact seat and a moving contact, the moving contact is conductively connected to the sealed pole isolation contact seat assembly, and the moving contact is used to be connected to the isolation static contact seat, the structure of the sealed pole isolation contact seat assembly is the same as the structure of the sealed pole isolation contact seat assembly described above, and will not be repeated here.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A sealed pole isolation contact seat assembly, comprising a sealed pole and an isolation contact seat; The sealed pole includes: Insulating housing; The vacuum interrupter is located inside the insulating shell. The vacuum interrupter includes a static end and a dynamic end. The insulating shell has a dynamic end moving cavity for the dynamic end to move. The isolating contact seat comprises a seat body, and the seat body is provided with a moving contact through hole for conducting electricity with the moving contact and for the moving contact to pass through; Its characteristics are: The isolating contact seat also includes a connecting arm connected to the seat body, the connecting arm extends into the movable cavity of the moving end and is electrically connected to the moving end through a flexible connection; The connecting arm is provided with a heat dissipation channel, which connects the moving contact perforation and the moving end active cavity; The insulating shell is provided with a pole heat dissipation hole connecting the movable end cavity with the outside world; The connecting arm comprises an arm body and a conductive connecting seat at one end of the arm body extending into the insulating housing, and the conductive connecting seat is provided with a connecting seat heat dissipation hole opposite to the pole heat dissipation hole; The heat dissipation channel opening on the conductive connection base is directly opposite to the opening of the heat dissipation hole of the connection base; An annular ventilation groove is provided on the inner wall of the moving contact perforation, and one end opening of the heat dissipation channel is located at the bottom of the annular ventilation groove; The bottom of the annular ventilation groove is provided with a contact seat heat dissipation hole which is connected with the outside and the moving contact through hole.

2. The solid-sealed pole isolation contact seat assembly according to claim 1 is characterized in that: The conductive connection seat has a movable end connection hole, and the movable end is conductively connected to the hole wall of the movable end connection hole through the soft connection.

3. The sealed pole isolation contact seat assembly according to claim 1 or 2, characterized in that: The contact seat heat dissipation holes are multiple.

4. The solid-sealed pole isolation contact seat assembly according to claim 1 or 2, characterized in that: A contact finger groove is arranged in the moving contact through-hole, and the contact finger groove is used for installing the contact finger.

5. A switch cabinet, comprising a sealed pole isolating contact seat assembly, an isolating static contact seat and a moving contact, wherein the moving contact is conductively connected to the sealed pole isolating contact seat assembly, and the moving contact is used to be connected to the isolating static contact seat, and is characterized in that: The solid-sealed pole isolation contact seat assembly is the solid-sealed pole isolation contact seat assembly as described in any one of claims 1 to 4.

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