Sealing structure of solid-sealed polar pole

Abstract

The utility model discloses a sealing structure of a solid-sealed polar pole, which comprises a shell, a vacuum arc-extinguishing chamber is arranged at the upper end in the shell, and an insulating mechanism is arranged at the lower end in the shell; the sealing assembly comprises a sealing sleeve and a buffer part, the sealing sleeve is detachably installed at the lower end of the vacuum arc-extinguishing chamber, the buffer part is arranged in the sealing sleeve, and one end of the buffer part is arranged on the outer surface of a conducting rod at the lower end of the vacuum arc-extinguishing chamber. According to the utility model, impact force is buffered through the buffer component, rebound is reduced, the corrugated pipe is prevented from generating cracks due to forced vibration, and air leakage of the vacuum arc-extinguishing chamber is avoided, and through auxiliary cooperation of the sealing sleeve, the sealing performance of the vacuum arc-extinguishing chamber is enhanced, and the insulation effect of the solid-sealed polar pole is prevented from being influenced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the solid seal pole technical field especially relates to a sealing structure of solid seal pole. BACKGROUND

[0002] Solid seal pole is a kind of component used in high-voltage circuit breaker, it embeds vacuum arc-extinguishing chamber and the conductive part related to circuit breaker into epoxy resin or thermoplastic material such easy solidification solid insulation material, forms pole, makes the whole circuit breaker pole become a whole component, mainly used for conductive connection, insulation protection, structural support function, plays a vital role in medium-voltage circuit breaker.

[0003] However, the prior art has some problems: the existing solid seal pole is opened and closed at present, and the deformation of contact and conducting rod can be generated when the impact speed and impact force of opening and closing are large, even crack is generated, rebound can cause the crack of bellows subjected to forced vibration, causes the vacuum arc-extinguishing chamber to leak, leads to the sealing property of solid seal pole to decline, even unable to use, there is certain limitation, therefore we propose a sealing structure of solid seal pole. UTILITY MODEL CONTENT

[0004] In view of the problems existing in the prior art, the utility model aims at providing a sealing structure of solid seal pole, through the cooperation of sealing sleeve and buffer component, when using, the impact force is buffered by buffer component, the rebound effect is reduced, the crack of bellows subjected to forced vibration is avoided, the leakage of vacuum arc-extinguishing chamber is avoided, the sealing property of vacuum arc-extinguishing chamber is strengthened by the auxiliary cooperation of sealing sleeve, the insulation effect of solid seal pole is avoided

[0005] The utility model is realized in this way, a sealing structure of solid seal pole, comprising:

[0006] Shell, the vacuum arc-extinguishing chamber is arranged at the upper end in the shell, and the insulation mechanism is arranged at the lower end in the shell;

[0007] Sealing assembly, the sealing assembly includes sealing sleeve and buffer component, the sealing sleeve is detachably installed at the lower end of vacuum arc-extinguishing chamber, the buffer component is arranged in the sealing sleeve, and one end of the buffer component is arranged on the outer surface of the conducting rod at the lower end of vacuum arc-extinguishing chamber.

[0008] Optionally, a through hole is formed in the outer side of the sealing sleeve, a limiting screw is arranged in the through hole, a cover plate is arranged at the lower end of the vacuum arc-extinguishing chamber, a threaded hole is formed in the outer side of the cover plate, and the limiting screw is screwed with the threaded hole.

[0009] Optionally, the buffer component comprises a connecting mechanism and a movable plate, the movable plate is arranged on the lower surface of the inner wall of the vacuum arc-extinguishing chamber, one end of the connecting mechanism is sleeved on the outer surface of the conductive rod, a plurality of connecting rods are arranged between the connecting mechanism and the movable plate, the connecting rods are slidingly installed in the inner part of the cover plate, springs are arranged on the outer surface of the upper end of the connecting rods, and the springs are arranged between the movable plate and the lower surface of the inner wall of the vacuum arc-extinguishing chamber.

[0010] Optionally, the connecting mechanism comprises a connecting plate, a plurality of supporting rods are arranged on the lower surface of the connecting plate, and a limiting sleeve is arranged at one end of the supporting rod.

[0011] Optionally, the supporting rod is provided with a vertical rod on one side, and the vertical rod is arranged in a corresponding manner in the inner part of the sealing sleeve.

[0012] Optionally, a hole is formed in the middle of the lower surface of the sealing sleeve, and the limiting sleeve is slidingly installed in the inner part of the hole.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The sealing sleeve and the buffer component are arranged, the buffer component is used for buffering the impact force, the rebound effect is reduced, the bellows is prevented from being subjected to forced vibration to generate cracks, the air leakage of the vacuum arc-extinguishing chamber is avoided, the sealing property of the vacuum arc-extinguishing chamber is improved through the auxiliary cooperation of the sealing sleeve, and the insulation effect of the fixed sealing pole is avoided.

[0015] 2. The sealing sleeve and the cover plate are arranged, the sealing sleeve is fixed on the cover plate and is supported, and the positioning installation effect of the sealing sleeve is achieved, and the installation convenience is improved.

[0016] Other features and advantages of the utility model will become apparent from the following detailed description of exemplary embodiments thereof, with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structural schematic view provided by the utility model;

[0018] Figure 2 is the internal schematic view of the shell provided by the utility model;

[0019] Figure 3 is the sealing assembly schematic view provided by the utility model;

[0020] Figure 4 is the connecting mechanism schematic view provided by the utility model;

[0021] Figure 5 is the sectional view of the vacuum arc-extinguishing chamber provided by the utility model.

[0022] In the figure: 1. Outer shell; 2. Vacuum interrupter; 3. Threaded hole; 4. Insulation mechanism; 5. Sealing assembly; 501. Sealing sleeve; 502. Limiting screw; 503. Connecting mechanism; 5031. Limiting sleeve; 5032. Support rod; 5033. Vertical rod; 5034. Connecting plate; 504. Spring; 505. Movable plate; 506. Connecting rod; 6. Conductive rod; 7. Cover plate. DETAILED DESCRIPTION

[0023] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0024] like Figures 1 to 5 As shown, an embodiment of the present invention provides a sealing structure for a sealed pole, comprising: a housing 1, a vacuum interrupter 2 being provided at the upper end of the interior of the housing 1, and an insulating mechanism 4 being provided at the lower end of the interior of the housing 1; a sealing assembly 5, the sealing assembly 5 comprising a sealing sleeve 501 and a buffer component, the sealing sleeve 501 being detachably mounted on the lower end of the vacuum interrupter 2, the buffer component being disposed inside the sealing sleeve 501, and one end of the buffer component being disposed on the outer surface of a conductive rod 6 at the lower end of the vacuum interrupter 2;

[0025] Specifically, such as Figures 1 to 5 As shown, the vacuum interrupter 2 is opened and closed through the insulating mechanism 4. During the opening and closing process, operational errors may occur. During the opening and closing process, the impact speed and impact force are large, causing bouncing, which causes deformation of the contacts and the conductive rod 6. In this way, the buffer component is used to buffer the impact force, reduce the rebound effect, and avoid the bellows from being subjected to forced vibration and cracking, which causes air leakage in the vacuum interrupter 2. At the same time, the auxiliary cooperation of the sealing sleeve 501 strengthens the sealing of the vacuum interrupter 2 and avoids affecting the insulation effect of the sealed pole.

[0026] Furthermore, a through hole is formed on the outside of the sealing sleeve 501, a limiting screw 502 is provided inside the through hole, a cover plate 7 is provided at the lower end of the vacuum interrupter 2, a threaded hole 3 is formed on the outside of the cover plate 7, and the limiting screw 502 is threadedly connected to the threaded hole 3;

[0027] Specifically, such as Figure 3 As shown, the sealing sleeve 501 is fixed under the cover plate 7 so that the threaded hole 3 coincides with the through hole, and then the limiting screw 502 is inserted and rotated so that the limiting screw 502 moves inside the threaded hole 3 to fix the sealing sleeve 501, thereby achieving the effect of convenient installation.

[0028] Furthermore, the buffer component includes a connecting mechanism 503 and a movable plate 505. The movable plate 505 is arranged on the lower surface of the inner wall of the vacuum interrupter 2. One end of the connecting mechanism 503 is sleeved on the outer surface of the conductive rod 6. A plurality of connecting rods 506 are arranged between the connecting mechanism 503 and the movable plate 505. The connecting rods 506 are slidably mounted inside the cover plate 7. A spring 504 is provided on the outer surface of the upper end of the connecting rod 506. The spring 504 is arranged between the movable plate 505 and the lower surface of the inner wall of the vacuum interrupter 2.

[0029] Specifically, such as Figures 3 to 5 As shown, when the conductive rod 6 is deformed by a large impact force, the conductive rod 6 and the connecting mechanism 503 will be tightly fitted. At this time, when the conductive rod 6 moves, it will drive the connecting mechanism 503 to move along, so that the connecting mechanism 503 moves upward, and the movable plate 505 is driven to move inside the vacuum interrupter 2 through the connecting rod 506. At this time, the spring 504 will be stretched to increase the resistance, cushioning the connecting mechanism 503, thereby reducing the impact force, thereby avoiding the risk of the bellows being forced to vibrate and cracking, resulting in leakage in the vacuum interrupter 2.

[0030] Furthermore, the connecting mechanism 503 includes a connecting plate 5034, a plurality of support rods 5032 are provided on the lower surface of the connecting plate 5034, and a limiting sleeve 5031 is provided at one end of the support rod 5032, and the limiting sleeve 5031 is sleeved on the outer surface of the conductive rod 6;

[0031] Specifically, such as Figures 3 to 5 As shown, the limit sleeve 5031 is sleeved on the outer surface of the conductive rod 6, and the inner wall of the limit sleeve 5031 fits with the conductive rod 6, but the conductive rod 6 can slide inside the limit sleeve 5031. This can avoid the buffer component from moving as a whole when the impact force is not large, which may affect the opening and closing operation. On the contrary, when the conductive rod 6 is subjected to a large impact force, the conductive rod 6 may be deformed, and at this time it will fully fit with the limit sleeve 5031. At this time, the conductive rod 6 cannot move alone, and will drive the connecting mechanism 503 to follow the movement, so that the buffer component can move as a whole to buffer the impact force and avoid damage to the inside of the vacuum arc chamber 2. Subsequently, it is supported by multiple groups of support rods 5032 to improve the firmness of the limit sleeve 5031.

[0032] Furthermore, a vertical rod 5033 is provided on one side of the support rod 5032, and the vertical rod 5033 is provided corresponding to the interior of the sealing sleeve 501;

[0033] Specifically, such as Figure 4 As shown, when the sealing sleeve 501 is installed, the lower surface of the inner wall of the sealing sleeve 501 contacts the vertical rod 5033. At this time, the hole on the outside of the sealing sleeve 501 just coincides with the threaded hole 3, thereby achieving the effect of positioning the sealing sleeve 501 and improving the convenience of installation.

[0034] Furthermore, a hole is opened in the middle of the lower surface of the sealing sleeve 501, and the limiting sleeve 5031 is slidably installed inside the hole;

[0035] Specifically, such as Figure 5 As shown, the limiting sleeve 5031 can slide up and down in the hole, so that when the limiting sleeve 5031 moves, it can move independently without driving the sealing sleeve 501 to move with it, thereby achieving the goal of preventing movement jamming.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a sealed pole, characterized in that: include: A housing (1), wherein a vacuum interrupter (2) is provided at the upper end of the interior of the housing (1), and an insulating mechanism (4) is provided at the lower end of the interior of the housing (1); A sealing assembly (5), the sealing assembly (5) comprising a sealing sleeve (501) and a buffer component, the sealing sleeve (501) being detachably mounted on the lower end of the vacuum interrupter (2), the buffer component being arranged inside the sealing sleeve (501), and one end of the buffer component being arranged on the outer surface of a conductive rod (6) at the lower end of the vacuum interrupter (2).

2. The sealing structure of a sealed pole according to claim 1, characterized in that: A through hole is provided on the outside of the sealing sleeve (501), a limiting screw (502) is provided inside the through hole, a cover plate (7) is provided at the lower end of the vacuum arc extinguishing chamber (2), a threaded hole (3) is provided on the outside of the cover plate (7), and the limiting screw (502) is threadedly connected to the threaded hole (3).

3. The sealing structure of the embedded pole according to claim 2, characterized in that: The buffer component comprises a connecting mechanism (503) and a movable plate (505), wherein the movable plate (505) is arranged on the lower surface of the inner wall of the vacuum interrupter (2), one end of the connecting mechanism (503) is sleeved on the outer surface of the conductive rod (6), a plurality of connecting rods (506) are arranged between the connecting mechanism (503) and the movable plate (505), the connecting rods (506) are slidably mounted inside the cover plate (7), a spring (504) is arranged on the outer surface of the upper end of the connecting rod (506), and the spring (504) is arranged between the movable plate (505) and the lower surface of the inner wall of the vacuum interrupter (2).

4. The sealing structure of a sealed pole according to claim 3, characterized in that: The connecting mechanism (503) comprises a connecting plate (5034), a lower surface of the connecting plate (5034) being provided with a plurality of support rods (5032), one end of the support rods (5032) being provided with a limiting sleeve (5031), and the limiting sleeve (5031) being sleeved on the outer surface of the conductive rod (6).

5. The sealing structure of the sealed pole according to claim 4, characterized in that: A vertical rod (5033) is provided on one side of the support rod (5032), and the vertical rod (5033) is arranged corresponding to the interior of the sealing sleeve (501).

6. The sealing structure of the sealed pole according to claim 5, characterized in that: An opening is provided in the middle of the lower surface of the sealing sleeve (501), and the limiting sleeve (5031) is slidably mounted inside the opening.

Images