Filling and sealing positioning clamp for cylindrical direct-current support capacitor

By designing a potting and positioning fixture for a cylindrical DC support capacitor, the problems of poor contact and torsional stress on the connecting copper busbar caused by capacitor height deviation were solved. This achieved precise positioning and stability of the capacitor, improved the reliability and safety of the capacitor connection, and facilitated cleaning and maintenance.

CN224036238UActive Publication Date: 2026-03-24TECHCAP CAPACITOR INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-25
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

Cylindrical DC support capacitors pose a risk of loosening due to poor contact caused by height deviation and excessive torsional stress on the connecting copper busbars in wind power, photovoltaic, energy storage, and industrial frequency conversion fields.

Method used

A potting positioning fixture including a base, a support rod, and an upper positioning plate was designed. It is locked and fixed by a wing nut to ensure the precise positioning and stability of the capacitor. The base has a circular through hole in the center and a recessed surface to limit the position of the capacitor. The support rod is threaded to the base and the external thread on the top is connected to the wing nut. The positioning plate has a capacitor terminal limiting hole in the middle.

Benefits of technology

It achieves a capacitor height deviation within ±0.3mm, avoiding poor contact and torsional stress on the connecting copper busbar, improving the reliability and safety of capacitor connection, and the fixture assembly is detachable for easy cleaning and maintenance.

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Abstract

An encapsulation positioning clamp for a cylindrical DC support capacitor comprises a base, support rods, an upper positioning plate and a butterfly nut, the support rods are fixedly mounted on the left side and the right side of the base, the cylindrical DC support capacitor is integrally placed on the base, and the upper positioning plate is mounted at the tops of the support rods in a sleeving manner and is locked and fixed through the butterfly nut. The encapsulation positioning clamp for the cylindrical direct current support capacitor is reasonable in structural design, simple and convenient to operate, and capable of accurately positioning and fixing the cylindrical direct current support capacitor and ensuring the stability and consistency of the capacitor in the encapsulation process, and the total height deviation of the capacitor is + / -0.3 mm.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the potting positioning technical field of capacitor especially a kind of potting positioning fixture of cylindrical direct-current support capacitor. BACKGROUND

[0002] Cylindrical direct-current support capacitor is widely applied in the field such as wind energy, photovoltaic, energy storage, industrial frequency conversion, according to the power difference of several to dozens of capacitors parallel connection, the deviation of this kind of capacitor height is ±1mm, height is uneven, and it can cause local contact failure, and the risk of long-term loosening due to excessive stress of connecting copper bar distortion. CONTENT OF UTILITY MODEL

[0003] In order to solve the problems existing in the prior art, the utility model provides a kind of potting positioning fixture of cylindrical direct-current support capacitor.

[0004] The technical scheme that the utility model solves its technical problem is as follows:

[0005] A kind of potting positioning fixture of cylindrical direct-current support capacitor, including base 1, support rod 2, upper positioning plate 3 and butterfly nut 4, wherein: the left and right sides of base 1 are fixed with support rod 2, and cylindrical direct-current support capacitor is placed on base 1, upper positioning plate 3 is installed on the top of support rod 2, and is locked and fixed by butterfly nut 4.

[0006] The utility model also has the following additional technical features:

[0007] As the further specific optimization of the technical scheme of the utility model: the base 1 includes base body 101, a circular through-hole 102 is arranged at the center of base body 101 and penetrates the center of base, a circular sunken concave 103 is arranged at the center of base body 101 and is sunken concave, the circular sunken concave 103 is used to limit the placement position of cylindrical direct-current support capacitor;The left and right sides of base body 101 are provided with support rod fixed hole 104 with internal thread, and the bottom of support rod 2 is installed in support rod fixed hole 104 by thread cooperation.

[0008] As the further specific optimization of the technical scheme of the utility model: the support rod 2 includes support rod body 201, the top of support rod body 201 is provided with top outer thread 202, and top outer thread 202 is connected with butterfly nut 4;The bottom of support rod body 201 is provided with bottom outer thread 203, and bottom outer thread 203 is connected with the support rod fixed hole 104 of base 1.

[0009] As the further specific optimization of the technical scheme of the utility model, the upper positioning plate 3 comprises an upper positioning plate body 301; the left and right ends of the upper positioning plate body 301 are provided with support rod through holes 302 penetrating through the upper positioning plate body 301, the top outer thread 202 of the support rod 2 is connected with the butterfly nut 4 after penetrating through the support rod through hole 302; the middle part of the upper positioning plate body 301 is provided with two capacitor terminal limiting holes 303, and the capacitor terminals of the cylindrical DC support capacitor are placed in the capacitor terminal limiting holes 303 to limit and lock the capacitor terminals of the cylindrical DC support capacitor.

[0010] Compared with the prior art, the utility model has the advantages of:

[0011] The cylindrical DC support capacitor potting positioning clamp has the advantages of reasonable structure design, simple operation, accurate positioning and fixing of the cylindrical DC support capacitor, stability and consistency of the capacitor in the potting process, and capacitor total height deviation of ±0.3mm. By using the clamp, the capacitor height deviation can be significantly reduced, the problems of local poor contact and excessive stress of the connected copper bar can be avoided, and the reliability and safety of capacitor connection are improved. In addition, the components of the clamp are detachable, which facilitates cleaning and maintenance, improves the durability and practicality of the clamp. Therefore, the utility model has a wide application prospect in the field of capacitor potting positioning technology. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a potting positioning clamp structure schematic view of the utility model;

[0013] Figure 2 It is a base 1 structure schematic view of the utility model;

[0014] Figure 3 It is a support rod 2 structure schematic view of the utility model;

[0015] Figure 4 It is an upper positioning plate 3 structure schematic view of the utility model;

[0016] Mark explanation: base 1, support rod 2, upper positioning plate 3 and butterfly nut 4. DETAILED DESCRIPTION

[0017] The exemplary embodiments disclosed by the utility model will be described in more detail below with reference to the drawings.

[0018] A cylindrical DC support capacitor potting positioning clamp comprises a base 1, a support rod 2, an upper positioning plate 3 and a butterfly nut 4, wherein: the left and right sides of the base 1 are fixedly provided with the support rod 2, the cylindrical DC support capacitor is placed on the base 1 as a whole, the upper positioning plate 3 is sleeved and installed on the top of the support rod 2 and is locked and fixed through the butterfly nut 4.

[0019] The base 1 comprises a base body 101, a circular through hole 102 is arranged at the center of the base body 101, a circular sunken surface 103 is arranged at the center of the base body 101, the circular sunken surface 103 is used for limiting the placement position of the cylindrical DC support capacitor; the left and right sides of the base body 101 are provided with support rod fixing holes 104 with internal threads, the bottom of the support rod 2 is installed in the support rod fixing hole 104 in a threaded cooperation mode.

[0020] The support rod 2 comprises a support rod body 201, the top of the support rod body 201 is provided with a top external thread 202, the top external thread 202 is connected with the wing nut 4 in a cooperation mode; the bottom of the support rod body 201 is provided with a bottom external thread 203, the bottom external thread 203 is connected with the support rod fixing hole 104 of the base 1 in a cooperation mode.

[0021] The upper positioning plate 3 comprises an upper positioning plate body 301; the left and right ends of the upper positioning plate body 301 are provided with support rod through holes 302 penetrating through the upper positioning plate body 301, the top external thread 202 of the support rod 2 is connected with the wing nut 4 in a cooperation mode after penetrating through the support rod through hole 302; the middle part of the upper positioning plate body 301 is provided with two capacitor terminal limiting holes 303, the capacitor terminals of the cylindrical DC support capacitor are placed in the capacitor terminal limiting holes 303, and the capacitor terminals of the cylindrical DC support capacitor are limited and locked.

[0022] The installation method of the potting positioning clamp of the cylindrical DC support capacitor:

[0023] Firstly, the base is placed on the workbench, then the support rod is installed in the support rod fixing hole of the base in a threaded cooperation mode. Then the cylindrical DC support capacitor is placed in the circular sunken surface of the base, and the placement position of the capacitor is ensured to be correct. Then the upper positioning plate is sleeved and installed on the top of the support rod, so that the capacitor terminals are placed in the capacitor terminal limiting holes of the upper positioning plate. Finally, the upper positioning plate is locked and fixed through the wing nut, so that the installation of the potting positioning clamp of the cylindrical DC support capacitor is completed.

[0024] The above detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents the selected embodiments of the utility model.

Claims

1. A potting fixture for positioning a cylindrical DC support capacitor, characterized by: Including base (1), support rod (2), upper positioning plate (3) and wing nut (4), wherein: the left and right sides of base (1) are fixedly provided with support rod (2), the cylindrical DC support capacitor is placed on base (1) as a whole, upper positioning plate (3) is sleeved and installed on the top of support rod (2), and is locked and fixed through wing nut (4); The base (1) includes a base body (101), a circular through hole (102) penetrating the center of the base is arranged at the center of the base body (101), a circular sunken concave (103) is arranged at the center of the base body (101), the circular sunken concave (103) is used for limiting the placement position of the cylindrical DC support capacitor; the left and right sides of the base body (101) are provided with support rod fixing holes (104) with internal threads, the bottom of the support rod (2) is installed in the support rod fixing hole (104) through threaded cooperation; The support rod (2) includes a support rod body (201), the top of the support rod body (201) is provided with a top external thread (202), the top external thread (202) is connected with the wing nut (4); the bottom of the support rod body (201) is provided with a bottom external thread (203), the bottom external thread (203) is connected with the support rod fixing hole (104) of the base (1); The upper positioning plate (3) includes an upper positioning plate body (301); the left and right ends of the upper positioning plate body (301) are provided with support rod through holes (302) penetrating the upper positioning plate body (301), the top external thread (202) of the support rod (2) is connected with the wing nut (4) after penetrating the support rod through hole (302); the middle part of the upper positioning plate body (301) is provided with two capacitor terminal limiting holes (303), the capacitor terminals of the cylindrical DC support capacitor are placed in the capacitor terminal limiting holes (303), and the capacitor terminals of the cylindrical DC support capacitor are limited and locked.