Self-healing low-voltage parallel capacitor

Abstract

The utility model relates to the field of capacitors, in particular to a self-healing type low-voltage parallel capacitor, which comprises a metal shell, a base, a top seat, wire outlet sleeves, wire ends, a capacitor main core group, a partition plate and a capacitor secondary core group, the base is mounted on the lower side of the metal shell, the top seat is mounted on the upper side of the metal shell, and the three wire outlet sleeves with the same specification are mounted on the upper side of the top seat. Three partition plates are installed on the inner side of the metal shell, three capacitor main core sets are installed on the partition plates in a partitioned mode, capacitor secondary core sets are installed on the two sides of each capacitor main core set, a slotted hole is formed in the middle of each capacitor main core set, a fuse is installed in each slotted hole, grooves are formed in the upper end and the lower end of each capacitor main core set, and metal head branch-shaped objects are installed in the grooves. A metal head branch-shaped object and a fuse are arranged inside, fault diffusion is avoided, and safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the capacitor field, concretely relates to a self -healing low -voltage shunt capacitor. BACKGROUND

[0002] Self -healing low -voltage shunt capacitor is a kind of low -voltage shunt capacitor, when breakdown occurs between poles, the metallized electrode layer around the breakdown point will evaporate rapidly, and the capacitor performance is automatically restored, the capacitor adopts metallized polypropylene film as medium, when the capacitor encounters overvoltage or partial discharge caused by dielectric breakdown in work, the metal layer around the breakdown point will evaporate rapidly, form a small conductive channel, short-circuit the breakdown point, then re-evaporate under the action of electric field, fill the hole, realize self-repair, self -healing low -voltage shunt capacitor is mainly used in power frequency system, by improving the power factor of power system and improving power quality, improve the reliability of power supply system.It is also used for reactive compensation, by installing capacitor at motor, transformer and other equipment, inductive current and capacitive current are offset, improve the equipment doing function, Chinese patent discloses a kind of self -healing low -voltage shunt capacitor (authorized announcement number CN 109378216B), the self -healing low -voltage shunt capacitor of the patent technology is high in safety, long in service life, small in capacitance drop amplitude after long-term use, low in subsequent replacement frequency, high in application value, but, the design is not block processing, capacitor core group is a whole, capacitance attenuation in later period, capacitor core group replacement cost is big.Therefore, the self -healing low -voltage shunt capacitor provided by the person skilled in the art solves the problems raised in the above background art. CONTENT OF UTILITY MODEL

[0003] To solve the above technical problems, the utility model provides a kind of self -healing low -voltage shunt capacitor, including metal shell, base, top seat, outlet bushing, wire head, capacitor main core group, baffle and capacitor secondary core group, base is installed in the lower side of metal shell, top seat is installed in the upper side of metal shell, three outlet bushings of same specification are installed on the upper side of top seat, wire head is installed in the inner side of outlet bushing, three baffles are installed in the inner side of metal shell, baffle separates and installs three capacitor main core groups, capacitor secondary core group is installed on the two sides of capacitor main core group.

[0004] Preferably, the lower inner wall of the metal shell is provided with a first protruding plate, the first protruding plate is provided with a first screw hole, the base is installed on the lower side of the metal shell, the upper side of the base is provided with a ring plate, the ring plate is tightly attached to the inner wall of the metal shell, the base is provided with a second screw hole, and nuts are installed in the first screw hole and the second screw hole.

[0005] Preferably, the upper inner wall of the metal shell is provided with a second protruding plate, the second protruding plate is provided with an ear plate, the ear plate is installed on the two sides of the top seat, the top seat is provided with three wire holes, fixed pipes are installed in the wire holes, and the fixed pipes are installed on the lower side of the outlet bushing.

[0006] Preferably, the fixed tube installs the wire head, the wire head is connected to install the electric wire, the electric wire is installed in the wire slot, and the wire slot is arranged on the upper side of the capacitor main core group.

[0007] Preferably, the capacitor main core group is provided with a slot hole in the middle, a fuse is installed in the slot hole, recesses are arranged at the upper and lower ends of the capacitor main core group, a metal head branch is installed in the recess, a No. 1 ring groove is arranged in the capacitor main core group, a metalized polypropylene film is installed in the No. 1 ring groove, a No. 2 ring groove is arranged outside the No. 1 ring groove, a No. 1 foil winding is installed in the No. 2 ring groove, and a No. 3 ring groove is arranged outside the No. 2 ring groove.

[0008] The technical effects and advantages of the utility model are as follows:

[0009] 1. The capacitor main core group is provided with a slot hole in the middle, a fuse is installed in the slot hole, recesses are arranged at the upper and lower ends of the capacitor main core group 7, a metal head branch is installed in the recess, the metal head branch and the fuse are installed, fault diffusion is avoided, and safety is improved.

[0010] 2. By block assembly capacitor core group, can improve the convenient degree of disassembly and assembly, replace a small piece of core group at the same time, reduce the follow-up replacement cost;

[0011] 3. By the partition plate, three capacitor main core groups are installed, capacitor secondary core groups are installed on both sides of the capacitor main core group, large-scale sudden situation hazards can be avoided, and damage cost is reduced. DRAWINGS

[0012] Figure 1 It is a structure schematic diagram of a self-recovery low-voltage parallel capacitor provided by the embodiment of the application.

[0013] Figure 2 It is an explosion structure schematic diagram of a self-recovery low-voltage parallel capacitor provided by the embodiment of the application. Figure 1 ;

[0014] Figure 3 It is an explosion structure schematic diagram of a self-recovery low-voltage parallel capacitor provided by the embodiment of the application. Figure 2 ;

[0015] Figure 4 It is a structure schematic diagram of a self-recovery low-voltage parallel capacitor provided by the embodiment of the application.

[0016] Figure 5 It is a sectional structure schematic diagram of a self-recovery low-voltage parallel capacitor provided by the embodiment of the application.

[0017] In the figure: 1, metal shell; 2, base; 3, top seat; 4, outlet sleeve; 5, nut; 6, wire head; 7, capacitor main core group; 8, fuse; 9, metallized polypropylene film; 10, No. 1 foil winding; 11, No. 2 foil winding; 12, metal head dendrite; 101, No. 1 convex plate; 102, No. 1 screw hole; 103, No. 2 convex plate; 104, partition plate; 201, ring plate; 202, No. 2 screw hole; 301, ear plate; 302, wire hole; 401, fixing tube; 601, wire; 701, capacitor secondary core group; 702, slot hole; 703, wire slot; 704, groove; 705, No. 1 ring groove; 706, No. 2 ring groove; 707, No. 3 ring groove. DETAILED DESCRIPTION

[0018] The embodiments of the present application will be further described below in conjunction with the drawings and specific embodiments. The embodiments of the present application are given for the purpose of illustration and description, and are not exhaustive or limit the present application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles and practical application of the present application, and to enable those of ordinary skill in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.

[0019] EMBODIMENT

[0020] Please refer to Figures 1-5 In the embodiment, a self-healing low-voltage parallel capacitor is provided, which comprises a metal shell 1, a base 2, a top seat 3, an outlet sleeve 4, a wire head 6, a capacitor main core group 7, a partition plate 104 and a capacitor secondary core group 701. The base 2 is installed on the lower side of the metal shell 1, the top seat 3 is installed on the upper side of the metal shell 1, three outlet sleeves 4 of the same specification are installed on the upper side of the top seat 3, the wire head 6 is installed on the inner side of the outlet sleeve 4, three partition plates 104 are installed on the inner side of the metal shell 1, the partition plates 104 separate three groups of capacitor main core groups 7, and the capacitor secondary core group 701 is installed on both sides of the capacitor main core group 7.

[0021] Specific, metal shell 1 lower side inner wall mounting No. 1 convex plate 101, No. 1 convex plate 101 is equipped with a No. 1 screw hole 102, metal shell 1 lower side mounting base 2, base 2 upper side mounting ring plate 201, ring plate 201 tightly adhere to the inner wall of metal shell 1, base 2 is equipped with two No. 2 screw hole 202, No. 1 screw hole 102 and No. 2 screw hole 202 install nut 5, metal shell 1 upper side inner wall mounting No. 2 convex plate 103, No. 2 convex plate 103 is installed on the ear plate 301, ear plate 301 is installed on both sides of the top base 3, top base 3 is equipped with three wire holes 302, wire hole 302 is installed fixed tube 401, fixed tube 401 is installed on the lower side of the outlet sleeve 4, fixed tube 401 is installed wire head 6, wire head 6 is connected to install wire 601, wire 601 is installed in the wire groove 703, wire groove 703 is provided on the upper side of the capacitor main core group 7, capacitor main core group 7 is provided with a groove 702 in the middle, the groove 702 is installed in the fuse 8, capacitor main core group 7 is provided with a recess 704 at the upper and lower ends, the recess 704 is installed with a metal head branch 12, capacitor main core group 7 is provided with a No. 1 ring groove 705, No. 1 ring groove 705 is installed with a metalized polypropylene film 9, No. 2 ring groove 706 is provided outside No. 1 ring groove 705, No. 2 ring groove 706 is installed with a No. 1 foil winding 10, No. 2 ring groove 706 is provided with a No. 3 ring groove 707, No. 3 ring groove 707 is installed with a No. 2 foil winding 11.

[0022] The working principle of the utility model is:

[0023] In use a kind of self-healing low-voltage shunt capacitor, install three capacitor main core groups 7 by partition 104, capacitor main core group 7 is installed capacitor secondary core group 701 on both sides, can avoid large-scale hidden danger of sudden situation, reduce damage cost, by block assembly capacitor main core group 7 and capacitor secondary core group 701, can improve disassembly and assembly convenience, replace a small piece of core group simultaneously, reduce follow-up replacement cost.

[0024] Obviously, the described embodiments are only a part of the embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art and related fields without creative labor should belong to the scope of protection of the utility model. The structure, device and operation method not specifically described and explained in the utility model, are implemented according to conventional means in the art, without special description and limitation.

Claims

1. A self-healing low voltage shunt capacitor, characterized in that The utility model provides a metal shell (1), base (2), top seat (3), outgoing line sleeve (4), wire end (6), capacitor main core group (7), baffle (104) and capacitor secondary core group (701), the lower side of metal shell (1) installs base (2), the upper side of metal shell (1) installs top seat (3), top seat (3) upper side installs three same specifications outgoing line sleeve (4), outgoing line sleeve (4) inside installs wire end (6), metal shell (1) inside installs three baffle (104), baffle (104) separates and installs three groups capacitor main core group (7), and capacitor main core group (7) both sides install capacitor secondary core group (701).

2. A self-healing low voltage shunt capacitor according to claim 1, characterized in that The lower side inner wall of metal shell (1) is installed with no. 1 lug plate (101), and no. 1 lug plate (101) is equipped with no. 1 screw hole (102), and the upper side of base (2) is installed with ring plate (201), and ring plate (201) is tightly attached to the inner wall of metal shell (1), and the upper side of base (2) is equipped with no. 2 screw hole (202), and nut (5) is installed in no. 1 screw hole (102) and no. 2 screw hole (202).

3. A self-healing low voltage shunt capacitor according to claim 2, characterized in that The upper side inner wall of metal shell (1) is installed with no. 2 lug plate (103), and no. 2 lug plate (103) is installed with lug plate (301), and lug plate (301) is installed on both sides of top seat (3), and top seat (3) is equipped with three wire holes (302), and fixed tube (401) is installed in wire hole (302), and fixed tube (401) is installed on the lower side of outgoing line sleeve (4).

4. A self-healing low voltage shunt capacitor according to claim 3, characterized in that Wire end (6) is installed in fixed tube (401), wire end (6) is connected with installation wire (601), and the other end of wire (601) is installed in wire groove (703), and wire groove (703) is arranged on the upper side of capacitor main core group (7).

5. A self-healing low voltage shunt capacitor according to claim 4, characterized in that The middle of capacitor main core group (7) is equipped with slot hole (702), and fuse (8) is installed in slot hole (702).

6. A self-healing low voltage shunt capacitor according to claim 5, characterized in that The upper and lower ends of capacitor main core group (7) are equipped with recess (704), and metal head branch (12) is installed in recess (704).

7. A self-healing low voltage shunt capacitor according to claim 6, characterized in that One ring groove (705) is arranged in capacitor main core group (7), and metalized polypropylene film (9) is installed in one ring groove (705).

8. A self-healing low voltage shunt capacitor according to claim 7, characterized in that The outer side of one ring groove (705) is equipped with no. 2 ring groove (706), and no. 1 foil winding (10) is installed in no. 2 ring groove (706).

9. A self-healing low voltage shunt capacitor according to claim 8, characterized in that The outer side of no. 2 ring groove (706) is equipped with no. 3 ring groove (707), and no. 2 foil winding (11) is installed in no. 3 ring groove (707).

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