A solid seal pole

Abstract

The application relates to the technical field of power equipment, and provides a solid-sealed pole, which comprises an insulating shell and an upper outgoing line seat, the upper outgoing line seat is embedded in the insulating shell, an outlet is arranged at the end of the insulating shell close to the upper outgoing line seat, a heat dissipation frame is arranged in the insulating shell, one side of the heat dissipation frame is partially attached to the side of the upper outgoing line seat facing the outlet, a dispersion cavity is formed between the heat dissipation frame and the side opposite to the outgoing line seat in the insulating shell, a gas inlet channel is arranged in the side wall of the insulating shell and communicates with the dispersion cavity, and airflow flows through the gas inlet channel, the dispersion cavity and the heat dissipation frame in sequence and is then discharged from the outlet. Based on this, the heat dissipation stability of the heat dissipation frame can be ensured, and the heat dissipation effect of the solid-sealed pole is improved.

Description

Technical Field

[0001] This application relates to the field of power equipment, and in particular to a solid-sealed pole. Background Technology

[0002] Currently, in the field of medium and high voltage electrical appliances, the main circuit of a vacuum circuit breaker mainly consists of a conductive main circuit and an operating mechanism, used to control and protect electrical equipment in power systems. The solid-sealed pole is the core component of a vacuum circuit breaker. The solid-sealed pole is formed by embedding the vacuum interrupter and related conductive parts of the circuit breaker into an insulating cylinder, which is mostly made of epoxy resin.

[0003] In the prior art, Chinese Patent No. CN203536281U discloses a solid-sealed electrode heat dissipation structure. The solid-sealed electrode includes an epoxy resin insulating cylinder, an arc-extinguishing chamber disposed within the insulating cylinder, and upper and lower outlet seats. The upper and lower outlet seats are disposed at the upper and lower ends of the aforementioned arc-extinguishing chamber. The upper and lower outlet seats are respectively embedded with a longitudinal heat dissipation fin group and a heat dissipation fin group. The upper outlet seat is provided with a longitudinal heat dissipation fin group at its upper end, while a heat dissipation fin group is provided on each side of the lower outlet seat. Each heat dissipation fin group is filled with a heat dissipation fin epoxy resin shell. The heat dissipation fin epoxy resin shell and the epoxy resin insulating cylinder are integral structures formed by one-time casting, and upper and lower heat dissipation channels are formed inside the epoxy resin insulating cylinder.

[0004] Regarding the aforementioned technologies, the epoxy resin outer shell of the heat sink and the epoxy resin insulating cylinder are integrally cast cylindrical insulating shells. Since the heat generated by the conductive circuit cannot be dissipated in a timely manner, connecting the heat sink assembly to the outlet socket allows for better heat dissipation from the arc-extinguishing chamber and the outlet socket. However, the heat sink is completely enclosed within the insulating shell, and both ends of the insulating shell are sealed. Therefore, the heat absorbed by the heat sink cannot be effectively dissipated, resulting in poor heat dissipation and unstable heat dissipation of the solid-sealed electrode. Summary of the Invention

[0005] To ensure heat dissipation stability and improve the heat dissipation effect of the solid-sealed terminal, this application provides a solid-sealed terminal.

[0006] The solid-sealed pole provided in this application adopts the following technical solution:

[0007] A solid-sealed pole includes an insulating shell and an upper outlet base. The upper outlet base is embedded in the insulating shell. An outlet is provided at the end of the insulating shell near the upper outlet base. A heat sink is provided inside the insulating shell. One side of the heat sink is attached to the side of the upper outlet base facing the outlet. A dispersion cavity is formed inside the insulating shell between the opposite sides of the heat sink and the outlet base. An air inlet channel communicating with the dispersion cavity is provided on the side wall of the insulating shell. The airflow flows through the air inlet channel, the dispersion cavity and the heat sink in sequence and then exits from the outlet.

[0008] By adopting the above technical solution, the heat of the upper outlet can be quickly transferred to the heat sink. The external natural airflow or the airflow generated by the fan can enter the dispersion chamber from the air inlet channel, and then flow out from the outlet after passing through the heat sink. The dispersion chamber makes the airflow more dispersed, so more airflow can be dispersed and pass through the heat sink in different parts, making the heat dissipation more uniform, so as to better remove the heat from the heat sink, thus ensuring heat dissipation stability and improving the heat dissipation effect of the solid-sealed pole.

[0009] Preferably, the heat sink includes a connecting part and a heat sink fixed to one end of the connecting part. The horizontal cross-section of the heat sink is circular and its outer side is adapted to the inner wall of the insulating shell. The connecting part is coaxially fixed to one end face of the heat sink facing the upper cable outlet. The side of the connecting part away from the heat sink is fitted and fixed to the upper cable outlet. The heat sink is provided with multiple through heat sink holes along its own axis. One end of the heat sink hole is connected to the dispersion cavity and the other end is connected to the outlet.

[0010] By adopting the above technical solution, the connecting part is attached and fixed to the upper cable outlet. The energy of the upper cable outlet is transferred to the connecting part, then from the connecting part to the heat dissipation part, and finally dissipated from the heat dissipation part. The heat dissipation holes can increase the contact area between the heat dissipation part and the outside world. When the airflow passes through the dispersion cavity to dissipate heat, most of the heat of the heat dissipation part can be carried away.

[0011] Preferably, heat dissipation holes are spaced around the periphery of the heat dissipation part, and a rectifier plate is disposed on the inner wall of the insulating shell inside the dispersion cavity. There is a gap between the inner wall of the rectifier plate and the periphery wall of the connecting part. The rectifier plate is ring-shaped and divides the dispersion cavity into two cavities located on opposite sides of the rectifier plate and communicating with each other. The periphery of the rectifier plate is in contact with the insulating shell.

[0012] By adopting the above technical solution, when the external airflow rushes into the dispersion cavity from the airflow channel, the airflow will directly impact one side of the rectifier plate, causing the airflow to directly dissipate from a few through holes, resulting in uneven heat dissipation of the heat sink. The rectifier plate can block the airflow direction after the airflow enters the dispersion cavity, so that the airflow is dispersed and enters the entire dispersion cavity, and then is evenly discharged from each through hole, making the heat dissipation of the heat sink more uniform.

[0013] Preferably, a through hole is provided at the center of the rectifier, the connecting part passes through the through hole, and a baffle extending away from the heat dissipation part is fixed on the periphery of the rectifier at the through hole. The end of the baffle away from the rectifier is spaced from the dispersion cavity.

[0014] By adopting the above technical solution, the baffle can extend to the part where the dispersion chamber is connected to the air intake. When the external airflow enters the space where the dispersion chamber is connected to the air intake from the air intake channel, the airflow can be better dispersed to the entire dispersion chamber connected to the air intake channel, and then enters another part of the dispersion chamber directly connected to the through hole. Finally, the airflow enters each through hole evenly to carry away the heat of the heat dissipation part more evenly.

[0015] Preferably, a groove is provided at the end of the heat dissipation part away from the connecting part and located on the axis, and the heat dissipation hole is located on the periphery of the groove.

[0016] By adopting the above technical solution and setting grooves, the contact area between the heat dissipation part and the outside world can be increased, thereby improving the heat dissipation effect of the heat dissipation frame.

[0017] Preferably, the interior of the insulating shell is provided with a mounting part, which wraps around the periphery of the upper cable outlet. The side of the mounting part facing the outlet is provided with a mounting hole, the bottom of which extends to the side wall of the upper cable outlet facing the outlet. The connecting part is inserted into the mounting hole and fits against the upper cable outlet. The dispersion chamber is located between the side of the mounting part facing the opening and the side of the heat dissipation part facing the mounting part. The air intake channel is located in the mounting part.

[0018] By adopting the above technical solution, the mounting part can cover the upper cable outlet, and the mounting part can form a dispersion cavity with the side of the heat dissipation part facing the mounting part. The air intake channel can be opened in the mounting part. The connecting part can be connected to the upper cable outlet at the mounting hole to ensure the insulation effect of the upper cable outlet.

[0019] Preferably, an extension tube extends from one end of the insulating shell, with the opening located at the end of the extension tube away from the insulating shell, and the heat sink is located inside the extension tube, with a gap between the periphery of the heat sink and the inner wall of the extension tube.

[0020] By adopting the above technical solution, the extension tube can increase the insulation distance of the insulating shell while covering the heat sink.

[0021] Preferably, the rectifier plate and the insulating shell are detachably connected by a connector, and the connecting part is detachably connected to the upper terminal block.

[0022] By adopting the above technical solution, it is convenient to disassemble and assemble the rectifier and heat sink. When the external airflow continuously enters the dispersion chamber from the air intake channel, it will bring some dust and other debris into the dispersion chamber, which will cause blockage of the dispersion chamber. By disassembling the heat sink and rectifier, it is convenient to clean the dispersion chamber and heat dissipation holes, ensuring the normal flow of airflow.

[0023] Preferably, the inner wall of the insulating shell is provided with a groove along the length direction. One end of the groove is located at the opening, and the other end is connected to the air intake channel and is in the same straight line as the air intake channel. A sliding part is fixed on the outer periphery of the rectifier. The sliding part slides along the groove. The connecting part is selected as a bolt. A fitting part is fixed in the dispersion cavity at the position of the inner wall of the insulating shell. The end of the fitting part near the opening is fitted with the rectifier. A threaded hole is provided on the fitting part.

[0024] By adopting the above technical solution, the rectifier can be quickly and stably slid into the dispersion cavity along the length of the slide groove until it is in contact with the bonding part and cannot move any further. Then, the rectifier is attached to the threaded hole of the bonding part by bolts, so that the rectifier can be detachably connected. Moreover, since the insulating shell is formed by injection molding, the slide groove and the air intake channel are on the same straight line, and the mold core forming the slide groove and the air intake channel can be smoothly extracted.

[0025] Preferably, the mounting part is provided with an annular protrusion on the periphery of the mounting hole, and the outer periphery of the annular protrusion is opposite to the baffle.

[0026] By adopting the above technical solution, an airflow channel is formed between the outer periphery of the annular convex edge and the position opposite to the baffle, ensuring that the two dispersion chambers on opposite sides of the rectifier can communicate with each other, and the annular convex edge can reduce the space of the dispersion chamber; when the airflow is flowing, the airflow in the dispersion chamber connected to the air inlet channel can quickly enter the dispersion chamber connected to the vent, increasing the airflow speed and carrying away the heat of the heat sink more quickly; at the same time, the annular convex edge can better cover the upper cable outlet, ensuring the fixing strength of the upper cable outlet.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] (1) By setting the coordination between the outlet, the inlet channel, the heat sink and the dispersion chamber, the external airflow is dispersed to the heat sink after passing through the dispersion chamber, thereby ensuring the heat dissipation stability of the heat sink and improving the heat dissipation effect of the solid-sealed pole.

[0029] (2) By setting up rectifiers, the airflow can be better dispersed throughout the dispersion cavity, so the airflow can be more evenly and reasonably dispersed to the heat sink and pass out from different heat sink holes, thus improving the heat dissipation effect; and by setting up baffles, the airflow can be further dispersed, ensuring that the airflow passes out from each heat sink hole evenly, thus further improving the stability of heat dissipation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the solid-sealed electrode in this embodiment;

[0031] Figure 2 This is a schematic diagram of the internal exploded structure of the solid-sealed pole in this embodiment;

[0032] Figure 3 This is a schematic diagram of the internal structure of the insulating shell in this embodiment;

[0033] Figure 4 yes Figure 1 Sectional view of AA;

[0034] Figure 5 yes Figure 4 Enlarged view of section B in the middle section.

[0035] Reference numerals: 1. Insulating shell; 2. Upper outlet socket; 3. Vacuum interrupter; 4. Mounting part; 5. Outlet; 6. Heat sink; 61. Connecting part; 62. Heat dissipation part; 7. Dispersion chamber; 71. First cavity; 72. Second cavity; 8. Air inlet channel; 9. Heat dissipation hole; 10. Groove; 11. Mounting hole; 12. Rectifier plate; 13. Baffle plate; 14. Spacing channel; 15. Extension tube; 16. Slide groove; 17. Sliding part; 18. Connecting piece; 19. Fitting part; 20. Annular flange. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0037] This application discloses a solid-sealed electrode post. (Refer to...) Figure 1 and Figure 2 The solid-sealed pole includes an insulating shell 1, an upper lead-out socket 2, and a vacuum interrupter 3.

[0038] Reference Figure 2 and Figure 3 The insulating shell 1 is formed by casting epoxy resin and is cylindrical. The vacuum interrupter 3 and the upper terminal block 2 are embedded inside the cast insulating shell 1. One end of the upper terminal block 2 is connected to the vacuum interrupter 3. The interior of the insulating shell 1 is integrally formed as a solid mounting part 4, which wraps around the upper terminal block 2 and the vacuum interrupter 3.

[0039] Reference Figure 3 and Figure 4 The insulating shell 1 has an outlet 5 at the end near the upper cable outlet 2 that communicates with the outside. A heat sink 6 is detachably fixed inside the insulating shell 1. One side of the heat sink 6 is attached to the side of the upper cable outlet 2 facing the outlet 5. A dispersion cavity 7 is formed inside the insulating shell 1 between the opposite sides of the heat sink 6 and the upper cable outlet 2. An air inlet channel 8 communicating with the dispersion cavity 7 is provided on the side wall of the insulating shell 1. The air inlet channel 8 is arranged along the length of the insulating shell 1. The external airflow flows through the air inlet channel 8, the dispersion cavity 7 and the heat sink 6 in sequence and then exits from the outlet 5. Since the dispersion cavity 7 can play a certain role in dispersing the airflow, the airflow can be dispersed to the heat sink 6 to improve the heat dissipation uniformity of the heat sink 6.

[0040] Reference Figure 2 and Figure 4 The heat sink 6 includes a connecting part 61 and a heat sink 62 integrally fixed to one end of the connecting part 61. The connecting part 61 and the heat sink 62 are cylindrical, with the outer diameter of the connecting part 61 being smaller than the outer diameter of the heat sink 62. The connecting part 61 is coaxially fixed to the end face of the heat sink 62 facing the upper cable outlet 2. The outer side of the heat sink 62 is adapted to the inner wall of the insulating shell 1 and has a gap between it and the inner wall of the insulating shell 1 to facilitate heat dissipation of the heat sink 62. The side of the connecting part 61 away from the heat sink 62 is fitted and fixed to the upper cable outlet 2, and the connecting part 61 and the upper cable outlet 2 are detachably fixed together by bolts. The heat sink 62 has a plurality of through heat dissipation holes 9 along its own axis. The heat dissipation holes 9 are spaced around the periphery of the heat sink 62, with one end of the heat dissipation hole 9 communicating with the dispersion cavity 7 and the other end communicating with the outlet 5. The heat from the upper outlet 2 is conducted to the connecting part 61, and then from the connecting part 61 to the heat dissipation part 62; when the airflow enters the dispersion chamber 7, it is then dispersed from the dispersion chamber 7 to each heat dissipation hole 9, and finally the heat is quickly carried away from the heat dissipation part 62.

[0041] In this design, a groove 10 is provided at the end of the heat dissipation part 62 away from the connecting part 61 and located on the axis. The cross-section of the groove 10 is circular, and the heat dissipation hole 9 is located on the periphery of the groove 10. This can further increase the contact area between the heat dissipation part 62 and the external connection, and improve the heat dissipation effect of the heat dissipation frame 6.

[0042] A mounting hole 11 is provided on the side of the mounting part 4 facing the outlet 5. The bottom of the mounting hole 11 extends to the side wall of the upper cable outlet 2 facing the outlet 5. That is, the position of the upper cable outlet 2 at the bottom of the mounting hole 11 is not covered by the mounting part 4. The connecting part 61 is inserted into the mounting hole 11 and fits against the position of the upper cable outlet 2 at the bottom of the mounting hole 11. The bolt passes through the connecting part 61 from the bottom of the groove 10 and is locked to the upper cable outlet 2, realizing the detachable fixation of the upper cable outlet 2 and the heat sink 6. The dispersion cavity 7 is formed between the side of the mounting part 4 facing the opening and the side of the heat sink 62 facing the mounting part 4. The air intake channel 8 is opened at the position of the mounting part 4 near the outer side of the insulation. The mounting part 4 has an annular protrusion 20 integrally formed on the periphery of the mounting hole 11. The annular protrusion 20 can better cover the upper cable outlet 2 and improve the fixation stability of the upper cable outlet 2.

[0043] Reference Figure 3 and Figure 5A rectifier 12 is disposed on the inner wall of the insulating shell 1 and within the dispersion cavity 7. The rectifier 12 is annular and divides the dispersion cavity 7 into a first cavity 71 and a second cavity 72 located on opposite sides of the rectifier 12 and communicating with each other. A through hole is provided at the center of the rectifier 12, and a connecting part 61 passes through the through hole. The connecting part 61, the annular flange 20, and the rectifier 12 are coaxially arranged. The first cavity 71 is located on the side of the rectifier 12 facing the vacuum interrupter 3 and is directly connected to the air inlet channel 8. The second cavity 72 is located on the side of the rectifier 12 facing the heat dissipation part 62 and is directly connected to the heat dissipation hole 9. A spacer channel 14 is provided between the inner wall of the rectifier 12 and the peripheral wall of the connecting part 61. The outer peripheral side of the rectifier 12 is in contact with the insulating shell 1. The spacer channel 14 ensures the communication between the first cavity 71 and the second cavity 72. When the external airflow enters the first cavity 71 through the inlet channel and impacts the side of the rectifier plate 12 facing the vacuum interrupter 3, the airflow is evenly distributed throughout the first cavity 71. Then, it enters the second cavity 72 evenly through the interval channel 14, and finally enters each heat dissipation hole 9 evenly from the second cavity 72, thereby improving the heat dissipation stability of the heat sink 6.

[0044] Additionally, a baffle 13 extending away from the heat dissipation part 62 is fixed at the periphery of the rectifier 12 located at the through hole, with the outer periphery of the annular protrusion 20 opposite to the baffle 13. There is a gap between the end of the baffle 13 away from the rectifier 12 and the side of the mounting part 4 facing the heat dissipation part 62, ensuring that airflow can enter the second cavity 72 from the first cavity 71. The baffle 13 extends into the first cavity 71. When external airflow enters the first cavity 71 from the air intake channel 8, it is blocked by the baffle 13, allowing the airflow to be better dispersed throughout the first cavity 71, rather than directly entering the second cavity 72 from the spacer channel 14. Finally, the airflow evenly enters each heat dissipation hole 9 to more evenly remove heat from the heat dissipation part 62, ensuring effective heat dissipation.

[0045] An extension tube 15 extends from one end of the insulating outer shell 1 where the heat sink 6 is located. The outlet 5 is located at the end of the extension tube 15 away from the insulating outer shell 1. The heat sink 6 is located inside the extension tube 15, and there is a gap between the periphery of the heat dissipation part 62 and the inner wall of the extension tube 15. The extension tube 15 can reduce the impact of external airflow entering the heat sink 6 through the opening on the heat dissipation of the heat sink 6.

[0046] Reference Figure 3 and Figure 5The rectifier plate 12 is detachably connected to the insulating shell 1 via a connector 18. As external airflow continuously enters the dispersion chamber 7 from the air intake channel 8, it carries dust and other debris into the dispersion chamber 7, causing blockage of the dispersion chamber 7 and the heat dissipation holes 9, thus affecting the normal heat dissipation of the heat sink 6. After disassembling the heat sink 6 and the rectifier plate 12, it is convenient to clean the dispersion chamber 7 and the heat dissipation holes 9, ensuring normal airflow.

[0047] Specifically, a groove 16 is formed along the length of the inner wall of the insulating shell 1. One end of the groove 16 is located at the opening, and the other end is connected to the air intake channel 8. A sliding part 17 is fixed on the outer periphery of the rectifier 12. The sliding part 17 slides along the groove 16. The connecting part 18 is also selected as a bolt. A fitting part 19 is fixed in the dispersion cavity 7 and located on the inner wall of the insulating shell 1. The end of the fitting part 19 near the opening is fitted with the rectifier 12. A threaded hole is machined on the fitting part 19. When installing the rectifier 12, the sliding part 17 can be inserted into the groove 16 located at the opening, and then slid towards the mounting part 4 in the insulating shell 1 until one side of the rectifier 12 is fitted with the fitting part 19 and cannot slide any further. Then, the bolt can be passed through the rectifier 12 and screwed into the threaded hole to realize the installation of the rectifier 12. Then the heat sink 6 is installed.

[0048] The slide groove 16 and the air intake channel 8 are on the same straight line. Since the insulating shell 1 is formed by casting epoxy resin in the mold, the slide groove 16 and the air intake channel 8 being on the same straight line can facilitate the quick extraction of the mold core forming the air intake channel 8.

[0049] The implementation principle of a solid-sealed electrode in this application embodiment is as follows: During operation, the heat generated by the vacuum interrupter 3 and the upper outlet 2 is conducted to the connecting part 61, and then from the connecting part 61 to the heat dissipation part 62; then airflow can be introduced from the inlet of the air inlet channel 8, and the airflow enters the first cavity 71 from the air inlet channel 8. After being blocked and limited by the rectifier plate 12 and the baffle plate 13, the airflow is fully dispersed to the entire first cavity 71, and then evenly dispersed to the second cavity 72 from the interval channel 14, and finally evenly dispersed to the heat dissipation hole 9, so as to stably remove the heat of the heat sink 6, thereby ensuring the heat dissipation stability of the heat sink 6 and improving the heat dissipation effect of the solid-sealed electrode.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealed terminal post, comprising an insulating shell (1) and an upper lead-out socket (2), characterized in that, The upper cable outlet (2) is embedded in the insulating shell (1). The end of the insulating shell (1) near the upper cable outlet (2) is provided with an outlet (5). A heat sink (6) is provided inside the insulating shell (1). One side of the heat sink (6) is attached to the side of the upper cable outlet (2) facing the outlet (5). A dispersion cavity (7) is formed between the heat sink (6) and the opposite side of the cable outlet inside the insulating shell (1). An air inlet channel (8) communicating with the dispersion cavity (7) is provided on the side wall of the insulating shell (1). The airflow flows through the air inlet channel (8), the dispersion cavity (7) and the heat sink (6) in sequence and then dissipates from the outlet (5). The heat sink (6) includes a connecting part (61) and a heat sink (62) fixed at one end of the connecting part (61). The horizontal cross-section of the heat sink (62) is circular and its outer side is adapted to the inner wall of the insulating shell (1). The connecting part (61) is coaxially fixed to one end face of the heat sink (62) facing the upper cable outlet (2). The side of the connecting part (61) away from the heat sink (62) is fitted and fixed to the upper cable outlet (2). The heat sink (62) is provided with multiple through heat sink holes (9) along its own axis. One end of the heat sink hole (9) is connected to the dispersion chamber (7) and the other end is connected to the outlet (5). Heat dissipation holes (9) are spaced around the periphery of the heat dissipation part (62). The inner wall of the insulating shell (1) is provided with a rectifier (12) inside the dispersion cavity (7). There is a gap between the inner wall of the rectifier (12) and the periphery of the connecting part (61). The rectifier (12) is ring-shaped and divides the dispersion cavity (7) into two cavities located on opposite sides of the rectifier (12) and connected to each other. The periphery of the rectifier (12) is in contact with the insulating shell (1).

2. The solid-sealed electrode post according to claim 1, characterized in that, A through hole is provided at the center of the rectifier (12), and the connecting part (61) passes through the through hole. A baffle (13) extending away from the heat dissipation part (62) is fixed on the periphery of the rectifier (12). The end of the baffle (13) away from the rectifier (12) is spaced from the dispersion cavity (7).

3. A solid-sealed electrode post according to claim 1, characterized in that, A groove (10) is provided at one end of the heat dissipation part (62) away from the connecting part (61) and at the position of the axis, and a heat dissipation hole (9) is located on the periphery of the groove (10).

4. A solid-sealed electrode post according to claim 1, characterized in that, An installation part (4) is provided inside the insulating shell (1). The installation part (4) wraps around the upper outlet seat (2). An installation hole (11) is provided on the side of the installation part (4) facing the outlet (5). The bottom of the installation hole (11) extends to the side wall of the upper outlet seat (2) facing the outlet (5). The connecting part (61) is inserted into the installation hole (11) and fits against the upper outlet seat (2). The dispersion chamber (7) is located between the side of the installation part (4) facing the opening and the side of the heat dissipation part (62) facing the installation part (4). The air intake channel (8) is located in the installation part (4).

5. A solid-sealed electrode post according to claim 1, characterized in that, An extension tube (15) is provided at one end of the insulating shell (1), with the opening located at the end of the extension tube (15) away from the insulating shell (1). The heat sink (6) is located inside the extension tube (15), and there is a gap between the periphery of the heat sink (62) and the inner wall of the extension tube (15).

6. A solid-sealed electrode post according to claim 2, characterized in that, The rectifier (12) and the insulating shell (1) are detachably connected by a connector (18), and the connecting part (61) is detachably connected to the upper outlet seat (2).

7. A solid-sealed electrode post according to claim 6, characterized in that, The inner wall of the insulating shell (1) is provided with a groove (16) along the length direction. One end of the groove (16) is located at the opening, and the other end is connected to the air intake channel (8) and is in the same straight line as the air intake channel (8). A sliding part (17) is fixed on the outer periphery of the rectifier (12). The sliding part (17) slides along the groove (16). The connector (18) is selected as a bolt. A fitting part (19) is fixed in the dispersion cavity (7) at the position of the inner wall of the insulating shell (1). The end of the fitting part (19) near the opening is fitted with the rectifier (12). A threaded hole is provided on the fitting part (19).

8. A solid-sealed electrode post according to claim 2, characterized in that, The mounting part (4) is provided with an annular protrusion (20) on the periphery of the mounting hole (11), and the outer periphery of the annular protrusion (20) is opposite to the baffle (13).

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