Solid-sealed polar pole

Abstract

The utility model relates to a solid-sealed polar pole which comprises an insulating shell, an arc extinguish chamber is arranged in the insulating shell, a guide rod interface is arranged below the arc extinguish chamber, a terminal connecting port is arranged at the upper end of the arc extinguish chamber, a conductive terminal is connected onto the terminal connecting port, and the solid-sealed polar pole further comprises a silicon rubber inner sleeve which is arranged on the inner wall of the arc extinguish chamber in an attached mode. A plurality of convex rings are arranged on the outer ring of the silicone rubber inner sleeve at equal intervals, and grooves embedded with the convex rings are formed in the insulating shell. The convex rings are arranged on the outer ring of the silicone rubber inner sleeve at equal intervals and are precisely embedded into the grooves in the inner wall of the insulating shell, so that the overall structural stability of the solid-sealed polar pole is remarkably enhanced. The design effectively resists displacement caused by external mechanical vibration, thermal expansion and cold contraction and other factors, ensures the sealing integrity of the arc extinguish chamber, avoids pollutant invasion, and prolongs the service life of equipment.

Description

Technical Field

[0001] The utility model relates to the field of voltage distribution equipment, in particular to a sealed pole. Background Art

[0002] As the power system's requirements for the safety and reliability of electrical equipment continue to increase, the design and manufacture of high-voltage electrical components are also facing more stringent challenges. Especially in high-voltage switchgear, the performance of the sealed pole, as one of the key components, directly affects the operational safety, insulation strength and service life of the entire switchgear. Traditional sealed poles are mainly made of a combination of metal and ceramic materials. Although they have good mechanical strength and insulation properties, they are prone to insulation damage and sealing failure during long-term operation due to factors such as temperature differences and mechanical vibrations, thus affecting the stability and safety of the equipment.

[0003] To solve the above problems, in recent years, polymer materials represented by silicone rubber have been widely used in the field of power equipment due to their superior insulation, weather resistance, elasticity, and easy processing and molding. Silicone rubber materials can not only effectively improve the sealing performance of the sealed poles and prevent the erosion of the internal structure by external environmental factors, but also absorb the mechanical stress generated during the arc extinguishing process and extend the service life of the equipment. However, how to further optimize the structural design between the silicone rubber inner sleeve and the insulating outer shell to achieve a more stable mechanical fit and enhance the overall electrical insulation performance has become a key point in the current technical improvement.

[0004] The application is filed based on this technical background, aiming to solve the problem of unstable connection between the existing silicone rubber inner sleeve and the arc extinguishing chamber. Utility Model Content

[0005] In view of the deficiencies in the background technology, the utility model provides a sealed pole.

[0006] The technical solution adopted by the utility model is: a sealed pole, including an insulating shell, an arc extinguishing chamber is arranged in the insulating shell, a guide rod interface is arranged below the arc extinguishing chamber, a terminal connection port is arranged at the upper end, a conductive terminal is connected to the terminal connection port, and also includes a silicone rubber inner sleeve fitted on the inner wall of the arc extinguishing chamber, a plurality of convex rings are arranged at equal intervals on the outer ring of the silicone rubber inner sleeve, and a groove is arranged on the insulating shell to engage with the above-mentioned convex ring.

[0007] Furthermore, reinforcement rings with a "V"-shaped structure are provided on the upper and lower sides of the convex ring.

[0008] Furthermore, the silicone rubber inner sleeve is provided with a protrusion on one end of the conductive terminal, and the end surface of the conductive terminal used for pressing on the rubber inner sleeve is provided with a concave surface adapted to the protrusion.

[0009] Furthermore, at least two circles of annular steps are provided on the outer circle of the conductive terminal, and the annular steps are engaged with the connecting concave surface on the inner wall of the connecting port.

[0010] Furthermore, a through hole for connecting a conductive rod is provided on a side surface of the insulating shell, and a current sensor is provided on an outer circle of the through hole.

[0011] Furthermore, the outer ring of the insulating shell is provided with an umbrella skirt structure.

[0012] Furthermore, a heat dissipation groove is provided on the insulating shell on the side of the terminal connection port, and a heat dissipation through hole connected to the outside is provided on the heat dissipation groove.

[0013] The beneficial effects of the utility model are:

[0014] 1. Enhanced structural stability and sealing: This application significantly enhances the overall structural stability of the sealed pole by setting equally spaced convex rings on the outer ring of the silicone rubber inner sleeve and precisely fitting them with the grooves on the inner wall of the insulating shell. This design effectively resists displacement caused by external mechanical vibration, thermal expansion and contraction, ensures the sealing integrity of the arc extinguishing chamber, avoids the intrusion of pollutants, and prolongs the service life of the equipment.

[0015] 2. Optimize the electric field distribution and improve the insulation performance: The matching design of the convex ring and the groove increases the contact area between the silicone rubber inner sleeve and the insulating outer shell, improves the electric field distribution, and reduces the local discharge in the high electric field area, thereby greatly improving the insulation performance of the pole, reducing the risk of electrical failure, and ensuring the safe and stable operation of the power system.

[0016] 3. Strong adaptability and wide application: This application is not only applicable to various existing types of high-voltage switchgear, but can also be flexibly adjusted according to different application scenarios and requirements, showing good adaptability and versatility, providing new solutions for the design and upgrading of power equipment, and promoting the advancement and development of technology in the power industry.

[0017] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages.

[0018] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 for Figure 1 Enlarged schematic diagram at point A in the middle.

[0021] Figure 1-2In: 1. Insulating shell; 2. Arc extinguishing chamber; 3. Guide rod interface; 4. Terminal connection port; 5. Conductive terminal; 6. Silicon rubber inner sleeve; 7. Convex ring; 8. Groove; 9. Reinforcement ring; 10. Bump; 11. Concave surface; 12. Annular step; 13. Connecting concave surface; 14. Through hole; 15. Current sensor; 16. Umbrella skirt structure; 17. Heat dissipation groove; 18. Heat dissipation through hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] The utility model provides a sealed pole.

[0025] In this embodiment, refer to Figure 1-2 The sealed pole comprises an insulating shell 1, an arc extinguishing chamber 2 is arranged in the insulating shell, a guide rod interface 3 is arranged below the arc extinguishing chamber 2, a terminal connection port 4 is arranged at the upper end, a conductive terminal 5 is connected to the terminal connection port, and a silicone rubber inner sleeve 6 is fitted on the inner wall of the arc extinguishing chamber, a plurality of convex rings 7 are arranged at equal intervals on the outer ring of the silicone rubber inner sleeve, and a groove 8 is provided on the insulating shell to be mutually engaged with the above-mentioned convex ring.

[0026] In the above technical solution, by fitting a silicone rubber inner sleeve to the inner wall of the arc extinguishing chamber and arranging equally spaced convex rings to engage with the grooves of the insulating outer shell, the sealing and mechanical stability of the pole are significantly enhanced, and the influence of the external environment on the internal components is effectively suppressed. At the same time, the electric field distribution is optimized, local discharge is reduced, and the insulation performance and long-term operation safety are improved.

[0027] Specifically, a V-shaped reinforcement ring 9 is provided on the upper and lower sides of the convex ring.

[0028] Adding "V"-shaped reinforcement rings on the upper and lower sides of the convex ring further enhances the structural strength of the silicone rubber inner sleeve, especially when subjected to mechanical stress during high-temperature arc extinguishing, can effectively prevent the inner sleeve from deformation, maintain good sealing and electrical insulation, and extend service life.

[0029] Specifically, a protrusion 10 is provided on one end of the conductive terminal of the silicone rubber inner sleeve, and a concave surface 11 adapted to the protrusion is provided on the end surface of the conductive terminal for pressing on the rubber inner sleeve.

[0030] The convex block at one end of the silicone rubber inner sleeve and the matching concave surface design on the conductive terminal achieve a tight fit between the two, ensuring the reliability of current conduction. At the same time, it also simplifies the assembly process, improves assembly accuracy, and enhances the mechanical stability and electrical contact of the connection part.

[0031] Specifically, at least two circles of annular steps 12 are provided on the outer circle of the conductive terminal, and the annular steps are engaged with the connecting concave surface 13 on the inner wall of the connecting port.

[0032] The annular step of the outer ring of the conductive terminal and the concave surface of the inner wall of the connecting port are interlocked, thereby enhancing the mechanical engagement between the terminal and the connecting port and improving the firmness of the connection.

[0033] Specifically, a through hole 14 for connecting a conductive rod is provided on the side surface of the insulating shell, and a current sensor 15 is provided on the outer circle of the through hole.

[0034] The through holes set on the side of the insulating shell are used to connect the conductive rods and integrate current sensors to realize real-time monitoring of current, facilitate system maintenance and fault diagnosis, enhance the intelligent management capabilities of the equipment, and improve the operating efficiency and safety of the power system.

[0035] Specifically, the outer ring of the insulating shell is provided with an umbrella skirt structure 16.

[0036] The additional umbrella skirt structure on the outer ring of the insulating shell effectively expands the insulation distance, enhances the protection against external pollution, reduces the probability of surface flashover, and improves the insulation performance under extreme weather conditions and the outdoor applicability of the equipment.

[0037] Specifically, a heat dissipation groove 17 is provided on the insulating shell at the side of the terminal connection port, and a heat dissipation through hole 18 connected to the outside is provided on the heat dissipation groove.

[0038] The insulating shell on the side of the terminal connection port is provided with a heat dissipation groove and a heat dissipation through-hole connected to the outside world, which significantly enhances the thermal management capability of the pole. Through the efficient heat dissipation mechanism, the temperature rise of the connection part is effectively controlled, the aging and performance degradation of the insulation material caused by overheating are prevented, and the long-term stable operation of the equipment is ensured.

[0039] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the concept of the utility model is not limited to this utility model. Any modification using the concept of the utility model will be included in the scope of protection of this patent right.

Claims

1. A sealed pole, comprising an insulating shell, an arc extinguishing chamber provided in the insulating shell, a guide rod interface provided below the arc extinguishing chamber, a terminal connection port provided at the upper end, a conductive terminal connected to the terminal connection port, characterized in that: It also includes a silicone rubber inner sleeve which is fitted on the inner wall of the arc extinguishing chamber, wherein a plurality of convex rings are arranged at equal intervals on the outer ring of the silicone rubber inner sleeve, and a groove which fits with the convex rings is arranged on the insulating outer shell.

2. The sealed pole according to claim 1, characterized in that: The upper and lower sides of the convex ring are provided with reinforcing rings with a "V"-shaped structure.

3. The sealed pole according to claim 1, characterized in that: The silicone rubber inner sleeve is provided with a convex block on one end of the conductive terminal, and the end surface of the conductive terminal used for pressing on the rubber inner sleeve is provided with a concave surface adapted to the convex block.

4. The sealed pole according to any one of claims 1 to 3, characterized in that: At least two circles of annular steps are arranged on the outer circle of the conductive terminal, and the annular steps are engaged with the connecting concave surface on the inner wall of the connecting port.

5. The sealed pole according to claim 1, characterized in that: A through hole for connecting a conductive rod is provided on the side surface of the insulating shell, and a current sensor is provided on the outer circle of the through hole.

6. The sealed pole according to claim 1, characterized in that: The outer ring of the insulating shell is provided with an umbrella skirt structure.

7. The sealed pole according to claim 1, characterized in that: A heat dissipation groove is provided on the insulating shell on the side of the terminal connection port, and a heat dissipation through hole connected to the outside is provided on the heat dissipation groove.

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