Solid-sealed polar pole with heat dissipation function

Abstract

The utility model discloses a solid-sealed polar pole with a heat dissipation function, which comprises an insulating shell, the insulating shell is provided with a first connecting terminal, a second connecting terminal and a cavity, the cavity is provided with a vacuum arc-extinguishing chamber, one end of the vacuum arc-extinguishing chamber is provided with a movable conducting rod, and the other end of the vacuum arc-extinguishing chamber is provided with a heat dissipation device. The movable conducting rod is provided with a detachable supporting piece, the supporting piece is provided with a flexible connecting wire and is electrically connected with the second connecting terminal, the upper end face of the insulating shell is provided with a plurality of ventilation holes at equal intervals with a circle point as the axis and is communicated with the cavity, and the supporting piece is provided with a detachable heat dissipation ring. According to the utility model, the self-suction effect is generated by utilizing the chimney effect, external cold air is sucked into the cavity through the air inlet holes, and the external cold air passes through the heat dissipation holes and exchanges heat with the heat dissipation fins, so that the temperature of the heat dissipation fins is reduced, the temperature rise of the movable conducting rod is effectively controlled, and the product has the advantage of good automatic heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of power switch equipment, in particular to a sealed pole with a heat dissipation function. Background Art

[0002] The sealed pole is a pole in which the vacuum interrupter, upper and lower connecting terminals are completely cast in epoxy resin. Compared with assembled or open structures, its main advantages include high mechanical strength, reduced impact of environment, humidity and mechanical force, compactness and strength, and the overall modular structure allows for easy and quick installation.

[0003] The disadvantages of the sealed pole are also obvious. The heat dissipation is difficult. Since the upper and lower connections of the arc extinguishing chamber are completely sealed in epoxy resin, especially the lower dynamic connection generates a lot of heat, and the thermal conductivity of the epoxy material is relatively poor, the heat accumulated inside the pole is not easy to dissipate, especially the top of the pole of the large current circuit breaker uses a radiator, which will greatly increase the production cost. Therefore, the applicant has made a beneficial design and found a solution to the above problem. The technical solution to be introduced below is produced in this context. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned traditional solid-sealed pole design and provide a product with good automatic heat dissipation effect.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A sealed pole with a heat dissipation function comprises an insulating shell, the insulating shell is provided with a first connecting terminal and a second connecting terminal, the insulating shell is provided with a cavity, the cavity is provided with a vacuum arc extinguishing chamber, one end of the vacuum arc extinguishing chamber is provided with a moving conductive rod, the moving conductive rod is provided with a detachable support member, the support member is provided with a soft connecting wire and is electrically connected to the second connecting terminal, the upper end surface of the insulating shell is provided with a plurality of equally spaced ventilation holes with a dot as the axis, and is connected to the cavity, the support member is provided with a detachable heat dissipation ring, the two ends of the heat dissipation ring are provided with a plurality of equally spaced heat dissipation fins with a dot as the axis, heat dissipation holes are provided on both sides of the heat dissipation fins, the outer wall of the insulating shell is provided with a plurality of equally spaced air inlet holes with a dot as the axis, and is connected to the cavity and is located below the heat dissipation ring.

[0007] Preferably, a static conductive rod is provided at the other end of the vacuum arc extinguishing chamber and is electrically connected to the first connecting terminal.

[0008] Preferably, a flange is provided at the bottom of the insulating shell, and the flange is provided with a plurality of mounting holes.

[0009] Preferably, the support member is provided with a countersunk hole, the countersunk hole is provided with a spring and abuts against the end surface of the vacuum arc extinguishing chamber, and the countersunk hole and the end surface of the support member are provided with threaded holes.

[0010] Preferably, the heat dissipation ring is provided with an axial hole, the heat dissipation fins are provided with connecting columns, and the connecting columns and the dynamic conductive rods are provided with threaded grooves and are engaged and connected with the threaded holes.

[0011] Preferably, the detachable arrangement is a threaded hole.

[0012] Beneficial effects:

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model transfers the temperature heat to the heat dissipation ring through the moving conductive rod. The high temperature causes the air in the cavity to heat up. The density of the hot air is less than that of the cold air. The hot air rises and is discharged through the ventilation holes. Since the temperature of the air inlet holes is lower than the temperature of the cavity and the ventilation holes, the chimney effect is used to produce a self-suction effect, and the external cold air is sucked into the cavity through the air inlet holes. The cold air passes through the heat dissipation holes and exchanges heat with the heat dissipation fins, thereby reducing the temperature of the heat dissipation fins and effectively controlling the temperature rise of the moving conductive rod. As the temperature of the ventilation holes above becomes higher and higher, a pressure difference is formed with the external cold air, which accelerates the air intake of the air inlet holes, increases the flow rate through the heat dissipation fins, and further enhances the natural heat dissipation effect, so that the product has the advantage of good automatic heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The side cross-sectional structure of a solid-sealed pole with heat dissipation function of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 2 The side cross-sectional structure of a solid-sealed pole with heat dissipation function of the utility model is shown in FIG. Figure 2 ;

[0017] Figure 3 This is a schematic structural diagram of an insulating shell of a sealed pole with a heat dissipation function according to the utility model;

[0018] Figure 4 This is an exploded view of a sealed pole with heat dissipation function according to the utility model;

[0019] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0020] Figure numerals: 1. insulating shell; 2. vacuum arc extinguishing chamber; 3. support member; 4. flexible connecting wire; 5. heat dissipation ring; 6. threaded hole; 7. threaded groove; 11. first connecting terminal; 12. second connecting terminal; 13. cavity; 14. ventilation hole; 15. air inlet hole; 16. flange; 17. mounting hole; 21. moving conductive rod; 22. static conductive rod; 31. countersunk hole; 32. spring; 51. heat dissipation fin; 52. heat dissipation hole; 53. shaft hole; 54. connecting column. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are 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.

[0022] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] Reference example Figures 1 to 4 A sealed pole with heat dissipation function, comprising an insulating shell 1, the insulating shell 1 is provided with a first connection terminal 11 and a second connection terminal 12, characterized in that: the insulating shell 1 is provided with a cavity 13, the cavity 13 is provided with a vacuum arc extinguishing chamber 2, one end of the vacuum arc extinguishing chamber 2 is provided with a movable conductive rod 21, the movable conductive rod 21 is provided with a detachable support member 3, the support member 3 is provided with a soft connecting wire 4, and is electrically connected to the second connection terminal 12, the upper end surface of the insulating shell 1 is provided with a plurality of equally spaced ventilation holes 14 with a dot as the axis, and is connected to the cavity 13, the support The support 3 is provided with a detachable heat dissipation ring 5, and a plurality of heat dissipation fins 51 with equal spacing are provided at both ends of the heat dissipation ring 5 with the dot as the axis, and heat dissipation holes 52 are provided on both sides of the heat dissipation fins 51. The outer wall of the insulating housing 1 is provided with a plurality of air inlet holes 15 with equal spacing with the dot as the axis, and is connected with the cavity 13 and is located below the heat dissipation ring 5. When the vacuum interrupter 2 is disconnected, the movable conductive rod 21 moves downward, and is convenient to follow the support 3 to move downward through the flexible connecting wire 4. The heat dissipation fins 51 increase the contact area with the air, and the heat dissipation holes 52 facilitate the passage of cold air.

[0024] It is worth mentioning that a static conductive rod 22 is provided at the other end of the vacuum interrupter 2 and is electrically connected to the first connecting terminal 11. The first connecting terminal 11 transmits electric energy to the static conductive rod 22, and the static conductive rod 22 transmits electric energy to the static contact in the vacuum interrupter 2.

[0025] It is worth mentioning that a flange 16 is provided at the bottom of the insulating housing 1, and the flange 16 is provided with a plurality of mounting holes 17. The flange 16 is mainly fixed on the bracket of the vacuum circuit breaker, and the mounting holes 17 facilitate fasteners to connect and fix the flange 16 to an object;

[0026] It is worth mentioning that the support member 3 is provided with a countersunk hole 31, the countersunk hole 31 is provided with a spring 32, and abuts against the end face of the vacuum interrupter 2, the countersunk hole 31 and the end face of the support member 3 are provided with a threaded hole 6, the countersunk hole 31 prevents the spring 32 from detaching, and the spring 32 serves to increase the time for the dynamic conductive rod 21 to quickly break, shorten the arc time, reduce the arcing energy generated at the moment of arc breaking, and increase the service life of the vacuum interrupter 2;

[0027] It is worth mentioning that the heat dissipation ring 5 is provided with an axial hole 53, the heat dissipation fin 51 is provided with a connecting column 54, the connecting column 54 and the movable conductive rod 21 are provided with a threaded groove 7, and are engaged with the threaded hole 6, and the axial hole 53 is convenient for connection with the main shaft in the vacuum circuit breaker;

[0028] It is worth mentioning that the detachable setting is the threaded hole 6, which makes it easy to disassemble the heat dissipation ring 5 and the support member 3, and to maintain the heat dissipation ring 5, the support member 3 and the spring 32.

[0029] The use principle of the utility model is now described as follows:

[0030] The temperature heat is conducted to the heat dissipation ring 5 through the movable conductive rod 21. The high temperature causes the air in the cavity 13 to heat up. The density of the hot air is less than that of the cold air. The hot air rises and is discharged through the ventilation holes 14. Since the temperature of the air inlet 15 is lower than the temperature of the cavity 13 and the ventilation holes 14, the chimney effect is used to produce a self-suction effect, and the external cold air is sucked into the cavity 13 through the air inlet 15. The cold air passes through the heat dissipation holes 52 and exchanges heat with the heat dissipation fins 51, thereby reducing the temperature of the heat dissipation fins 51 and effectively controlling the temperature rise of the movable conductive rod 21. As the temperature of the ventilation holes 14 above becomes higher and higher, a pressure difference is formed with the external cold air, which will accelerate the air intake of the air inlet 15 and increase the flow rate through the heat dissipation fins 51, thereby enhancing the natural heat dissipation effect.

[0031] The above design scheme can enable the product to achieve the advantage of good automatic heat dissipation effect.

[0032] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A sealed pole with heat dissipation function, comprising an insulating shell (1), wherein the insulating shell (1) is provided with a first connecting terminal (11) and a second connecting terminal (12), characterized in that: The insulating shell (1) is provided with a cavity (13), the cavity (13) is provided with a vacuum arc extinguishing chamber (2), one end of the vacuum arc extinguishing chamber (2) is provided with a movable conductive rod (21), the movable conductive rod (21) is provided with a detachable support member (3), the support member (3) is provided with a soft connecting wire (4), and is electrically connected to the second connecting terminal (12), the upper end surface of the insulating shell (1) is provided with a plurality of equally spaced ventilation holes (14) with a dot as the axis, and is connected to the cavity (13), the support member (3) is provided with a detachable heat dissipation ring (5), both ends of the heat dissipation ring (5) are provided with a plurality of equally spaced heat dissipation fins (51) with a dot as the axis, and heat dissipation holes (52) are provided on both sides of the heat dissipation fins (51), the outer wall of the insulating shell (1) is provided with a plurality of equally spaced air inlet holes (15) with a dot as the axis, and is connected to the cavity (13) and is located below the heat dissipation ring (5).

2. The sealed pole with heat dissipation function according to claim 1, characterized in that: The other end of the vacuum interrupter (2) is provided with a static conductive rod (22) which is electrically connected to the first connecting terminal (11).

3. The sealed pole with heat dissipation function according to claim 1, characterized in that: The bottom of the insulating housing (1) is provided with a flange (16), and the flange (16) is provided with a plurality of mounting holes (17).

4. The sealed pole with heat dissipation function according to claim 1, characterized in that: The support member (3) is provided with a countersunk hole (31), the countersunk hole (31) is provided with a spring (32) and abuts against the end surface of the vacuum arc extinguishing chamber (2), and the countersunk hole (31) and the end surface of the support member (3) are provided with threaded holes (6).

5. The sealed pole with heat dissipation function according to claim 4, characterized in that: The heat dissipation ring (5) is provided with an axial hole (53), the heat dissipation fin (51) is provided with a connecting column (54), and the connecting column (54) and the movable conductive rod (21) are provided with a threaded groove (7) and are engaged and connected with the threaded hole (6).

6. The sealed pole with heat dissipation function according to claim 5, characterized in that: The detachable arrangement is a threaded hole (6).

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