CN200986856Y

CN200986856Y - Capacitor

Info

Publication number: CN200986856Y
Application number: CN 200620049218
Authority: CN
Inventors: 张声乐
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-20
Filing date: 2006-12-20
Publication date: 2007-12-05
Anticipated expiration: 2016-12-20

Abstract

The utility model discloses a capacitor with simple structures and an ideal heat elimination effect. The utility model comprises a box body (1), an insulating oil (4) contained in the box body (1), at least two capacitors bathed in the insulating oil (4), a connection terminal (3) corresponding to every group capacitor. Each group of the capacitor comprises a plurality of stacking multiple capacitor units (5). The mandrel (6) of each capacitor units (5) is parallel to each other and the mandrel is vertical to the direction of box bossy (1) height. The utility model is characterized in that no radiator (2) is provided in midway between two groups of adjacent capacitors. Crossing the entire height of the box body, the lateral walls at two ends of each radiator are tightly connected with the upper and lower coping of the box body (1).

Description

Capacitor

Technical field

The utility model relates to the capacitor that uses in a kind of electric power system, particularly a kind of self-healing low-voltage shunt capacitor.

Background technology

Self-healing low-voltage shunt capacitor of the prior art as shown in Figure 5, comprise casing 1, contain the insulating oil 4 in casing 1, be immersed at least two group electric capacity in the insulating oil 4, with every group of corresponding binding post 3 of electric capacity, every group of electric capacity is made up of several capacitor cell that is in parallel 5 stacks, the plug 6 of each capacitor cell 5 is parallel to each other and is perpendicular with the short transverse of casing 1, every group of electric capacity bundles side by side, the heat that produces between every group of electric capacity of said structure capacitor interacts soaring, heat is difficult to discharge, cause inside and outside temperature difference to reach more than 8 ℃, and the radiating mode of said structure capacitor mainly dispels the heat by casing 1 outer surface, so radiating effect is poor, directly influence the useful life of capacitor.No. 01105202.3, Chinese invention patent application, open day on August 21st, 2002, a kind of air duct radiation type power capacitor is disclosed, comprise housing, contain the insulating oil in housing, be immersed in the capacitor cell in the insulating oil, the plug of described capacitor cell parallels with capacitor height, described power capacitor is provided with and vertically is being some the air ducts that above-below direction passes the whole height of power capacitor, air duct is arranged on the both sides of capacitor cell, this structure capacitive device has solved the heat dissipation problem of capacitor preferably, but, the heat that produces between electric capacity rises because interacting, wherein the temperature at middle part is the highest between electric capacity, this application capacitor is arranged on air duct the both sides of capacitor cell, though can play certain thermolysis, radiating effect is not very desirable; And this application capacitor need adopt more radiating tube, and (the single-phase electricity container adopts 2 radiating tubes, also can adopt 4, each two of both sides; Three-phase capacitor then adopts 4 radiating tubes at least; Three-phase composite formula capacitor then needs more radiating tube), these radiating tubes need with housing welded seal mutually, it is loaded down with trivial details therefore to adopt more radiating tube not only to process, and complex structure, is unfavorable for cost control.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of simple in structure, capacitor that radiating effect is desirable.

For solving the problems of the technologies described above, the utility model is by the following technical solutions: a kind of capacitor, comprise casing, contain the insulating oil in casing, be immersed at least two group electric capacity in the insulating oil, with every group of corresponding binding post of electric capacity, every group of electric capacity is made up of several capacitor cell that is in parallel stacks, the plug of each capacitor cell is parallel to each other and is perpendicular with the short transverse of casing, centre position between the two adjacent groups electric capacity is provided with a hot channel, each hot channel runs through the whole height of casing, the two ends lateral wall of each hot channel respectively with the upper and lower covers fixed seal connection of casing.

Improvement of the technical scheme, the cross section of described hot channel can be rectangle, can increase area of dissipation relatively, can reduce the casing overall volume relatively, thereby can increase radiating effect.

Further improvement in the technical proposal, the two ends of described hot channel can be stretched out 1.5～2 millimeters of the upper and lower covers of casing respectively, can increase radiating effect.

The beneficial effect of the utility model capacitor is: in the technique scheme, owing to just be provided with a hot channel between two adjacent groups electric capacity, so structure is simple relatively, help processing and save cost; Because hot channel is arranged on the centre position between the two adjacent groups electric capacity, thereby makes the heat of the maximum temperature point between the two adjacent groups electric capacity obtain rapid release, so radiating effect is more satisfactory, has improved the useful life of capacitor greatly.

The utility model will be further described below in conjunction with the drawings and specific embodiments.

Description of drawings

Fig. 1 is the general structure front view of a kind of embodiment of the utility model capacitor.

Fig. 2 is an A-A cutaway view among Fig. 1.

Fig. 3 is the B-B cutaway view among Fig. 2.

Fig. 4 is the structural representation cutaway view of capacitor cell among Fig. 2.

Fig. 5 is the general structure schematic sectional view of capacitor in the prior art.

Embodiment

As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, a kind of embodiment of the utility model capacitor, comprise casing 1, contain the insulating oil 4 in casing 1, be immersed at least two group electric capacity in the insulating oil 4, with every group of corresponding binding post 3 of electric capacity, insulating oil 4 adopts wax in the present embodiment, casing 1 is a rectangle, every group of electric capacity is made up of 5 stacks of four capacitor cells that are in parallel, the plug 6 of each capacitor cell 5 is parallel to each other and is perpendicular with the short transverse of casing 1, centre position between first group of electric capacity and the second group of electric capacity is provided with a hot channel 2, centre position between second group of electric capacity and the 3rd group of electric capacity is provided with a hot channel 2 (be between the two adjacent groups electric capacity centre position be provided with a hot channel 2), each hot channel 2 runs through the whole height of casing 1, the upper and lower covers seam areas scolding tin fixing seal of the two ends lateral wall of each hot channel 2 and casing 1, realize hot channel 2 two ends lateral walls respectively with the fixed seal connection of casing 1 upper and lower covers, 1.5～2 millimeters of the upper and lower covers of casing 1 are stretched out at the two ends of described hot channel 2 respectively, the upper end of hot channel 2 becomes goes up venthole, the lower end of hot channel 2 becomes air admission hole down, cold air in service is from casing 1 bottom inflow gas inlet hole, by hot channel 2 heat that produces between the two adjacent groups electric capacity is discharged from casing 1 top venthole, thereby reach great heat radiation effect.The cross section of described hot channel 2 can be rectangle, the long limit of rectangle hot channel 2 parallels layout with the minor face of rectangular box 1 (being the left and right sides sidewall of casing 1), the minor face of rectangle hot channel 2 is positioned as close to the long limit (being the front and back sidewall of casing 1) of rectangular box 1, in order to reduce the casing overall volume, spacing between the two adjacent groups electric capacity is as much as possible little, therefore compare for circular or foursquare hot channel with cross section, under uniform distances condition between the two adjacent groups electric capacity, adopt the rectangle hot channel can increase area of dissipation; Compare for circular or square hot channel with cross section, under the constant condition of area of dissipation, can reduce the spacing between the two adjacent groups electric capacity, thereby can reduce the casing overall volume.Certainly the cross section of hot channel 2 can also be other flat patterns, arranges as long as the minor face of flat pattern hot channel is positioned as close to the front and back sidewall of casing 1, can reach the purpose of this utility model.

The foregoing description has been made detailed description to the utility model, obviously is not to restriction of the present utility model, and the utility model can also have many variations, and therefore protection range of the present utility model should be determined by claim.

Claims

1, a kind of capacitor, comprise casing (1), contain the insulating oil (4) in casing (1), be immersed at least two group electric capacity in the insulating oil (4), with every group of corresponding binding post of electric capacity (3), every group of electric capacity is made up of several capacitor cell that is in parallel (5) stacks, the plug (6) of each capacitor cell (5) is parallel to each other and is perpendicular with the short transverse of casing (1), it is characterized in that: the centre position between the two adjacent groups electric capacity is provided with a hot channel (2), each hot channel (2) runs through the whole height of casing (1), the two ends lateral wall of each hot channel (2) respectively with the upper and lower covers fixed seal connection of casing (1).

2, capacitor according to claim 1, it is characterized in that: described capacitor comprises three groups of electric capacity, every group of electric capacity is made up of four capacitor cells that are in parallel (5) stack, centre position between first group of electric capacity and the second group of electric capacity is provided with a hot channel (2), and the centre position between second group of electric capacity and the 3rd group of electric capacity is provided with a hot channel (2).

3, capacitor according to claim 1 and 2 is characterized in that: the cross section of described hot channel (2) is a rectangle.

4, capacitor according to claim 1 and 2 is characterized in that: 1.5～2 millimeters of the upper and lower covers of casing (1) are stretched out at the two ends of described hot channel (2) respectively.

5, capacitor according to claim 3 is characterized in that: 1.5～2 millimeters of the upper and lower covers of casing (1) are stretched out at the two ends of described hot channel (2) respectively.