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An Anti-interference High Voltage Metallized Polypropylene Film Capacitor

A polypropylene film and metallization technology, applied in the field of capacitors, can solve the problems of single function, high viscosity, poor compatibility of polypropylene film, etc., and achieve the effects of high safety, enhanced stability and stable performance

Active Publication Date: 2018-04-03
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The capacitor uses polyisobutylene as impregnant, which has single function, high viscosity, and poor compatibility with polypropylene film

Method used

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  • An Anti-interference High Voltage Metallized Polypropylene Film Capacitor
  • An Anti-interference High Voltage Metallized Polypropylene Film Capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 and figure 2 As shown, an anti-interference high-voltage metallized polypropylene film capacitor includes a cover plate 1, a shell 2 and a core body 3. The inner wall of the opening of the cover plate 1 is provided with an annular protrusion 4, and the upper part of the shell 2 is provided with an annular groove 5, and the annular protrusion 4 is arranged in the annular groove 5 and can move longitudinally in the annular groove 5. An elastic sealing ring 6 is arranged between the lower inner wall of the cover plate 1 and the upper outer wall of the casing 2 to ensure that when the annular protrusion 4 is in the annular groove 5 The interior of the capacitor is in a sealed state when moving longitudinally; the elastic rubber ring 19 is fixedly connected between the annular protrusion 4 and the bottom of the annular groove 5, which can further ensure that the interior of the capacitor is in a completely sealed state; two insulating bases 7 are symmetrically...

Embodiment 2

[0034] Embodiment 2 is basically the same as Embodiment 1, the difference is:

[0035] The insulating heat transfer oil is prepared from the following raw materials in parts by weight: 52 parts of castor oil, 28 parts of olive oil, 12 parts of diaryl ethane, modified nano-TiO 2 1.1 part, 0.8 part of antioxidant, 0.25 part of bis((3,4-epoxycyclohexyl) methyl) adipate, 0.25 part of polyisobutylene bis-succinimide ashless dispersant, metal deactivator T1201 is 0.25 servings.

[0036] Among them, modified nano-TiO 2 The preparation method comprises the following steps: the nano-TiO 2 Dissolve in deionized water and ultrasonically disperse for 25 minutes, in which nano-TiO 2 The weight ratio with deionized water is 1:2.5, use nitric acid solution to adjust the pH of the solution to 5.5, add a modifier, the modifier is a mixture of oleic acid and sodium laurate in a weight ratio of 1:1, the modifier with nano TiO 2 The weight ratio of the solution is 1.2:10; then ultrasonicall...

Embodiment 3

[0039] Embodiment 3 is basically the same as Embodiment 1, the difference is:

[0040] The insulating heat-conducting oil is prepared from the following raw materials in parts by weight: 54 parts of castor oil, 25 parts of olive oil, 10 parts of diaryl ethane, modified nano-TiO 2 1.2 parts, 0.9 parts of antioxidant, 0.3 parts of bis((3,4-epoxycyclohexyl) methyl) adipate, 0.2 parts of dispersant polyisobutenyl succinimide, 0.2 parts of metal deactivator T551 share.

[0041] Among them, modified nano-TiO 2 The preparation method comprises the following steps: the nano-TiO 2 Dissolve in deionized water and ultrasonically disperse for 20min, in which nano-TiO 2 The weight ratio with deionized water is 1:3, use sulfuric acid solution to adjust the pH of the solution to 6.0, add a modifier, the modifier is a mixture of oleic acid and sodium laurate in a weight ratio of 1:1, the modifier with nano TiO 2 The weight ratio is 1.5:10; then ultrasonically disperse at 50-60°C for 70 ...

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Abstract

The invention discloses an anti-interference high-voltage metalized polypropylene film capacitor, which comprises a cover board (1), a housing (2) and a core body (3), wherein an annular bump (4) is formed in the inner wall of an opening of the cover board (1); an annular groove (5) is formed in the upper part of the housing (2); the annular bump (4) is arranged in the annular groove (5) and can longitudinally move in the annular groove (5); an elastic seal ring (6) is arranged between the inner wall of the lower part of the cover board (1) and the outer wall of the upper part of the housing (2); an elastic rubber ring (19) is fixedly connected between the annular bump (4) and the bottom part of the annular groove (5); a buffer layer (13) is arranged at the inner wall of the housing (2); a core body (3) is arranged in the housing (2); a positioning sleeve (14) is arranged at the bottom part of the core body (3); an elastic washer (17) registered in the middle part of the core body (3); and insulated heat-conducting oil (18) is sealed between the housing (2) and the core body (3). The capacitor is high in breakdown voltage, anti-interference, safe, stable and long in service lifetime.

Description

technical field [0001] The invention relates to a capacitor, in particular to an anti-interference high-voltage metallized polypropylene film capacitor. Background technique [0002] The working principle of the metallized film capacitor is to use the metallized film as the medium and plate of the capacitor element, and roll it. The metal layers on both ends are connected to the plate by spraying gold, which has excellent electrical performance, good reliability and low loss. And the characteristics of good self-healing performance, widely used in instruments, meters, televisions, radios and household appliances for DC pulsation, pulse and AC voltage reduction. In the preparation of high-voltage metallized film capacitors, it is necessary to increase the thickness of the base film, thereby increasing the volume of the capacitor, which leads to increased costs and waste of resources; moreover, metallized film capacitors will generate heat during operation, if the large amount...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/224H01G2/18H01G4/33H01G4/32H01G4/005H01G4/14
CPCH01G2/18H01G4/005H01G4/14H01G4/224H01G4/32H01G4/33
Inventor 禹建丽苗满香张国辉
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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