Dry-type aluminum shell capacitor with insulating sleeve

Abstract

The utility model discloses a dry-type aluminum shell capacitor with an insulation sleeve, which comprises a capacitor assembly, and the capacitor assembly comprises an aluminum shell and a rubber plug. The rubber plug is fixedly connected to the top end of the aluminum shell, and the insulation assembly comprises an insulation sleeve, a fixing block, a first telescopic spring, a movable circular ring, a through hole and a fixing groove; the insulating sleeve sleeves the outer side of the aluminum shell, and the fixing blocks are fixedly connected to the periphery of the top end of the insulating sleeve. An insulating sleeve and a fixing plate are moved towards the direction of a rubber plug, the fixing plate enters the rubber plug and drives a movable circular ring to move inwards, the movable circular ring moves inwards to drive a first telescopic spring to be compressed, then the insulating sleeve is rotated, and the insulating sleeve drives the fixing plate to rotate; and under the elastic action of the first telescopic spring, the fixing plate enters the fixing groove and is blocked by the fixing circular ring, so that the insulation sleeve can be fixed.

Description

Technical Field

[0001] The utility model belongs to the technical field of dry-type aluminum shell capacitors, in particular to a dry-type aluminum shell capacitor with an insulating sleeve. Background Art

[0002] Dry-type aluminum-cased capacitors are encapsulated in aluminum and contain metallized polypropylene film as the dielectric. They are widely used in power electronics and distribution systems, particularly in DC filtering circuits, AC filtering, and power factor correction.

[0003] Existing dry-type aluminum-shell capacitors may experience leakage due to the aluminum shell. Usually, an insulating heat shrink tubing is fixed to the outer surface of the aluminum shell for insulation. However, the heat shrink tubing needs to be heated when being fixed and removed, which makes it inconvenient to fix and remove. Therefore, it is necessary to provide a device that is convenient for fixing and removing the insulating sleeve so as to fix the insulating sleeve to the outside of the aluminum shell or remove it from the outside of the aluminum shell. Utility Model Content

[0004] The present invention aims to solve the problems in the prior art and proposes the following technical solutions:

[0005] The invention comprises: a capacitor assembly, wherein the capacitor assembly comprises an aluminum shell and a rubber plug;

[0006] The rubber plug is fixedly connected to the top of the aluminum shell;

[0007] An insulating assembly, comprising an insulating sleeve, a fixing block, a first telescopic spring, a movable ring, a through hole, and a fixing groove;

[0008] The insulating sleeve is sleeved on the outer side of the aluminum shell, the fixed block is fixedly connected to the top and surrounding areas of the insulating sleeve, the first telescopic spring is fixedly connected to the inner and surrounding areas of the rubber plug, the movable ring is fixedly connected to the bottom end of the first telescopic spring, the through hole is opened around the bottom end of the rubber plug, and the fixed groove is opened inside the lower end of the rubber plug.

[0009] As a preferred embodiment of the above technical solution, the capacitor assembly further includes an electrode column;

[0010] The electrode column is fixedly connected to the top end of the rubber stopper.

[0011] As a preferred embodiment of the above technical solution, the through holes and the fixing grooves are opened relative to the fixing block, and the through holes and the fixing grooves are staggered.

[0012] As a preferred embodiment of the above technical solution, the fixing block is an arc-shaped structure, and the diameter of the insulating sleeve is smaller than the diameter of the rubber plug.

[0013] As a preferred embodiment of the above technical solution, it further includes a positioning assembly, which includes a heat insulation sleeve, a second telescopic spring, a fixed ring and a ball;

[0014] The heat-insulating sleeve is fixedly connected to the inner surface of the insulating sleeve, the second telescopic spring is fixedly connected to the upper and surrounding parts of the heat-insulating sleeve, the fixed ring is fixedly connected to the outer end of the second telescopic spring, and the ball is rotatably connected to the inner part of the fixed ring.

[0015] As a preferred embodiment of the above technical solution, the outer end of the ball contacts the inner side of the aluminum shell, and the heat insulation sleeve is located below the fixed block.

[0016] The beneficial effects of the utility model are:

[0017] (1) The utility model sets an insulating component, aligns the fixing plate with the through hole, and moves the insulating sleeve and the fixing plate toward the rubber plug, so that the fixing plate enters the interior of the rubber plug and drives the movable ring to move inward. The movable ring moves inward and drives the first telescopic spring to be compressed. Then the insulating sleeve is rotated, so that the insulating sleeve drives the fixing plate to rotate. When the fixing plate rotates to the outer end of the fixing groove, under the elastic force of the first telescopic spring, the fixing plate enters the interior of the fixing groove and is blocked by the fixing ring, thereby completing the fixing of the insulating sleeve. The operation is simple and easy to use.

[0018] (2) Based on the first beneficial effect, by setting the positioning component, when installing the insulating sleeve, the outer side of the ball contacts the inner side of the aluminum shell, and the aluminum shell applies an outward force to the ball, so that the ball drives the fixed ring to move outward, and the fixed ring drives the second telescopic spring to compress, so that the center lines of the insulating sleeve and the aluminum shell remain collinear, thereby facilitating the alignment of the fixed block and the through hole, and facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a front view of a dry-type aluminum shell capacitor with an insulating sleeve in Example 1;

[0020] Figure 2 The figure shows the structure of the capacitor assembly of the dry-type aluminum shell capacitor with an insulating sleeve in Example 1;

[0021] Figure 3 The figure shows the insulation assembly structure of the dry-type aluminum shell capacitor with an insulation sleeve in Example 1;

[0022] Figure 4 Shown is a structural diagram of a positioning assembly of a dry-type aluminum shell capacitor with an insulating sleeve in Example 2.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 11. Aluminum shell; 12. Rubber plug; 13. Electrode column; 21. Insulation sleeve; 22. Fixing block; 23. First telescopic spring; 24. Movable ring; 25. Through hole; 26. Fixing groove; 31. Insulation sleeve; 32. Second telescopic spring; 33. Fixing ring; 34. Ball. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0026] See also Figure 1-3 As shown, this embodiment is a dry-type aluminum shell capacitor with an insulating sleeve, comprising:

[0027] The capacitor assembly includes an aluminum shell 11 and a rubber plug 12 , wherein the rubber plug 12 is fixedly connected to the top of the aluminum shell 11 .

[0028] The insulating assembly includes an insulating sleeve 21 , a fixing block 22 , a first telescopic spring 23 , a movable ring 24 , a through hole 25 and a fixing groove 26 .

[0029] The insulating sleeve 21 is sleeved on the outer side of the aluminum shell 11, the fixed block 22 is fixedly connected to the top and surrounding areas of the insulating sleeve 21, the first telescopic spring 23 is fixedly connected to the inner and surrounding areas of the rubber stopper 12, the movable ring 24 is fixedly connected to the bottom end of the first telescopic spring 23, the through hole 25 is opened around the bottom end of the rubber stopper 12, and the fixed groove 26 is opened inside the lower end of the rubber stopper 12.

[0030] The insulating sleeve 21 is used to insulate the outside of the aluminum shell 11, the fixed block 22 is used to fix the insulating sleeve 21, the first telescopic spring 23 is used to drive the movable ring 24 to reset, the movable ring 24 is used to contact the outside of the fixed block 22, the through hole 25 is used for the fixed block 22 to enter the inside of the rubber plug 12, and the fixing groove 26 is used to place the fixed block 22.

[0031] The capacitor assembly further includes an electrode column 13 , which is fixedly connected to the top end of the rubber stopper 12 .

[0032] The rubber plug 12 is used to seal the upper end of the aluminum shell 11, and the electrode column 13 is used to electrically connect to external equipment.

[0033] The through hole 25 and the fixing groove 26 are opened relative to the fixing block 22 , and the through hole 25 and the fixing groove 26 are staggered.

[0034] The fixing block 22 can move inside the through hole 25 , and when the fixing block 22 enters the fixing groove 26 , the fixing block 22 cannot move downward.

[0035] The fixing block 22 is an arc-shaped structure, and the diameter of the insulating sleeve 21 is smaller than the diameter of the rubber plug 12 .

[0036] When both sides of the fixing block 22 are respectively contacted by the bottom end of the rubber stopper 12 and the movable ring 24 , the insulating sleeve 21 is fixed at the bottom end of the rubber stopper 12 .

[0037] Working principle: When the insulating sleeve 21 needs to be fixed, the insulating sleeve 21 is moved so that the insulating sleeve 21 drives the fixed block 22 to move, and then the fixed block 22 and the through hole 25 are placed correspondingly, and the fixed block 22 is allowed to enter the rubber stopper 12 through the through hole 25. The fixed block 22 moves and drives the movable ring 24 to move inward. The movable ring 24 moves inward and drives the first telescopic spring 23 to compress and generate elastic force, and then applies a rotational force to the insulating sleeve 21, so that the insulating sleeve 21 drives the fixed block 22 to rotate. When the fixed block 22 rotates to the outer end of the fixing groove 26, the force applied to the insulating sleeve 21 is stopped. Under the elastic force of the first telescopic spring 23, the movable ring 24 moves outward, and the movable ring 24 drives the fixed block 22 to move outward and enter the fixing groove 26, so that the fixing groove 26 and the movable ring 24 respectively block the two sides of the fixed block 22, thereby completing the fixation of the fixed block 22 and the insulating sleeve 21, so that the insulating sleeve 21 is fixed to the outside of the aluminum shell 11 for insulation.

[0038] When the insulating sleeve 21 needs to be disassembled, the above steps can be performed in reverse.

[0039] See also Figure 4 As shown, this embodiment is based on the above embodiment and also includes:

[0040] The positioning assembly includes an insulating sleeve 31, a second telescopic spring 32, a fixed ring 33 and a ball 34. The insulating sleeve 31 is fixedly connected to the inner surface of the insulating sleeve 21, the second telescopic spring 32 is fixedly connected to the upper and surrounding positions of the inner part of the insulating sleeve 31, the fixed ring 33 is fixedly connected to the outer end of the second telescopic spring 32, and the ball 34 is rotatably connected to the inner position of the fixed ring 33.

[0041] The heat-insulating sleeve 31 is used to support the second telescopic spring 32 and block heat. The second telescopic spring 32 is used to support the fixed ring 33. The fixed ring 33 is used to support the ball 34. The ball 34 is used to contact the inner side of the aluminum shell 11.

[0042] The outer end of the ball 34 contacts the inner side of the aluminum shell 11 , and the heat insulation sleeve 31 is located below the fixing block 22 .

[0043] When the outer end of the ball 34 contacts the inner side of the aluminum shell 11, the ball 34 moves outward, driving the fixed ring 33 to move outward.

[0044] Working principle: When the insulating sleeve 21 is fixed, the outer end of the ball 34 is brought into contact with the inner side of the aluminum shell 11. At this time, the ball 34 moves outward, driving the fixed ring 33 to move outward, and the fixed ring 33 then drives the second telescopic spring 32 to move outward. Since the second telescopic spring 32 maintains relative elastic force when not subject to external force, the compression amount of the second telescopic spring 32 is the same, so that the moving distance of the fixed ring 33 and the ball 34 is the same, so that the center of the insulating sleeve 31 and the aluminum shell 11 is The lines remain in a collinear state, and the insulation sleeve 31 drives the center lines of the insulation sleeve 21 and the aluminum shell 11 to remain in a collinear state, so that the fixing block 22 can correspond to the positions of the through hole 25 and the fixing groove 26 respectively, which is convenient for installation, and the ball 34 can be on the outer surface of the aluminum shell 11 to facilitate the movement of the insulation sleeve 21. At the same time, the insulation sleeve 31 and the outer surface of the aluminum shell 11 do not contact each other, so that the heat of the aluminum shell 11 is blocked by the insulation sleeve 31 and will not be transferred to the insulation sleeve 21, which can increase the service life of the insulation sleeve 21.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. Dry-type aluminum shell capacitor with insulating sleeve, characterized in that: include: A capacitor assembly, comprising an aluminum shell (11) and a rubber plug (12); The rubber stopper (12) is fixedly connected to the top of the aluminum shell (11); An insulating assembly, comprising an insulating sleeve (21), a fixing block (22), a first telescopic spring (23), a movable ring (24), a through hole (25) and a fixing groove (26); The insulating sleeve (21) is sleeved on the outer side of the aluminum shell (11), the fixed block (22) is fixedly connected to the top and surrounding positions of the insulating sleeve (21), the first telescopic spring (23) is fixedly connected to the inner and surrounding positions of the rubber plug (12), the movable ring (24) is fixedly connected to the bottom end of the first telescopic spring (23), the through hole (25) is opened at the bottom and surrounding positions of the rubber plug (12), and the fixed groove (26) is opened at the inner position of the lower end of the rubber plug (12).

2. The dry-type aluminum shell capacitor with an insulating sleeve according to claim 1, characterized in that: The capacitor assembly further includes an electrode column (13); The electrode column (13) is fixedly connected to the top end of the rubber stopper (12).

3. The dry-type aluminum shell capacitor with an insulating sleeve according to claim 1, characterized in that: The through hole (25) and the fixing groove (26) are opened relative to the fixing block (22), and the through hole (25) and the fixing groove (26) are staggered.

4. The dry-type aluminum shell capacitor with an insulating sleeve according to claim 1, characterized in that: The fixing block (22) is an arc-shaped structure, and the diameter of the insulating sleeve (21) is smaller than the diameter of the rubber stopper (12).

5. The dry-type aluminum shell capacitor with an insulating sleeve according to claim 1, characterized in that: It also includes a positioning assembly, which includes a heat insulation sleeve (31), a second telescopic spring (32), a fixed ring (33) and a ball (34); The heat-insulating sleeve (31) is fixedly connected to the inner surface of the insulating sleeve (21), the second telescopic spring (32) is fixedly connected to the upper and surrounding areas of the heat-insulating sleeve (31), the fixed ring (33) is fixedly connected to the outer end of the second telescopic spring (32), and the ball (34) is rotatably connected to the inner position of the fixed ring (33).

6. The dry-type aluminum shell capacitor with an insulating sleeve according to claim 5, characterized in that: The outer end of the ball (34) contacts the inner side of the aluminum shell (11), and the heat insulation sleeve (31) is located below the fixed block (22).

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