CN203434004U

CN203434004U - Smart Meter Film Capacitor

Info

Publication number: CN203434004U
Application number: CN201320599164.1U
Authority: CN
Inventors: 陶文涛; 文鑫
Original assignee: Dongguan Weidy Industrial Co ltd
Current assignee: Dongguan Weidy Industrial Co ltd
Priority date: 2013-09-26
Filing date: 2013-09-26
Publication date: 2014-02-12
Anticipated expiration: 2023-09-26

Abstract

The intelligent electric meter film capacitor comprises a capacitor core, two gold electrodes, two electrode leads, an anhydride epoxy resin sealing and heat insulating layer and a PBT plastic shell; two gold electrodes are respectively sprayed on two tail ends of the capacitor core, and two electrode leads are respectively welded on the two gold electrodes; the capacitor core is contained in the PBT plastic shell, and the anhydride epoxy resin sealing and heat-insulating layer is filled between the capacitor core and the PBT plastic shell. The utility model discloses above-mentioned high temperature resistant moisture resistance is good, long service life.

Description

Intelligent electric meter film capacitor

Technical field

The utility model relates to a kind of intelligent electric meter film capacitor.

Background technology

Intelligent electric meter not only possesses the function of measuring of traditional electric energy meter, also has two-way multiple rate function of measuring, user side and controls the intelligentized functions such as the bidirectional data communication function of function, plurality of data transmission modes, anti-stealing electricity function.Ammeter is generally installed in the power grid environment that hot and humid grade is complicated, and ammeter comprises thin-film capacitor, and the moistureproof temperature tolerance of existing thin-film capacitor is poor, is subject to the impact of mains by harmonics large, not only reduces the useful life of intelligent electric meter, also makes intelligent electric meter metering inaccurate.

Utility model content

For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of intelligent electric meter film capacitor of long service life.

For achieving the above object, the utility model adopts following technical scheme:

A film capacitor, it comprises capacitance core, two gold electrodes, two contact conductors, acid anhydride based epoxy resin sealing thermal insulation layer and PBT plastic casing; Two gold electrodes are sprayed on respectively two ends of this capacitance core, and two contact conductors difference weldings are on two gold electrodes; This capacitance core is contained in this PBT plastic casing, and acid anhydride based epoxy resin sealing thermal insulation layer is filled between this capacitance core and this PBT plastic casing.

Further, capacitance core comprises outer core and inner core, this inner core comprises the high temperature resistant basement membrane of polypropylene and is plated on the high temperature resistant epilamellar two pure aluminum metal coating spaced apart of polypropylene, and this outer core comprises the high temperature resistant basement membrane of polypropylene and is plated on the supermedial pure aluminum metal coating of the high temperature resistant basement membrane of polypropylene; This inner core and the superimposed coiling of outer core form the column capacitance core of electrical cascaded structure.

The beneficial effects of the utility model are as follows:

1, capacitance core of the present utility model adopts the high temperature resistant basement membrane of polypropylene can increase product heat-resisting quantity, makes intelligent electric meter can not shorten the life-span applicable to hot environment.

2, capacitance core adopts pure aluminum metal coating can strengthen the oxidative resistance of battery core, can prevent capacity attenuation.The electrical cascaded structure of this capacitance core can increase its product medium electric field strength, reduces coating fringe field voltage, reduces fuse end face generation corona probability, and the harmonic wave that can tackle complex electric network changes, and guarantees its stability, than single string structure, has better stability.

3, adopt the encapsulation of high-purity acid anhydrides based epoxy resin, good airproof performance, and the embedding respectively of minute secondary, carry out respectively hot setting, can effectively discharge fuse inner air and box body bottom air gap, prevent that corrosion causes capacity attenuation to core material for outside humidity and inner air.

4, the shell and the sealing thermal insulation layer that adopt high flame resistance, all reach UL94 V-0 level, can effectively avoid the naked light combustion phenomena that causes because of a variety of causes, reduces disaster hidden-trouble.

Accompanying drawing explanation

Fig. 1 is the structural representation of the better embodiment of the utility model intelligent electric meter film capacitor.

Fig. 2 is the structural representation of capacitance core of the intelligent electric meter film capacitor of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the utility model is described further:

Refer to Fig. 1 and Fig. 2, the utility model relates to a kind of intelligent electric meter film capacitor, its better embodiment comprises capacitance core 20, two gold electrodes 30, two contact conductors 40, acid anhydride based epoxy resin sealing thermal insulation layer 70 and PBT(polybutylene terephthalate, polybutylene terephthalate (PBT)) plastic casing 10.

Capacitance core 20 comprises outer core and inner core, this inner core comprises the high temperature resistant basement membrane 21 of polypropylene and is plated on two pure aluminum metal coating 11 spaced apart on the high temperature resistant basement membrane 21 of polypropylene, and this outer core comprises the high temperature resistant basement membrane 21 of polypropylene and is plated on the supermedial pure aluminum metal coating 11 of the high temperature resistant basement membrane 21 of polypropylene.This inner core and the superimposed coiling of outer core form the column capacitance core of electrical cascaded structure.

Two gold electrodes 30 are sprayed on respectively two ends of this capacitance core 20, and two contact conductors 40 difference weldings are on two gold electrodes 30.This capacitance core 20 is contained in this PBT plastic casing 10, and acid anhydride based epoxy resin sealing thermal insulation layer 70 is filled between this capacitance core 20 and this PBT plastic casing 10.

Capacitance core of the present utility model adopts the high temperature resistant basement membrane of polypropylene can increase product heat-resisting quantity, makes intelligent electric meter can not shorten the life-span applicable to hot environment.Capacitance core adopts pure aluminum metal coating can strengthen the oxidative resistance of battery core, can prevent capacity attenuation.The electrical cascaded structure of this capacitance core can increase its product medium electric field strength, reduces coating fringe field voltage, reduces fuse end face generation corona probability, and the harmonic wave that can tackle complex electric network changes, and guarantees its stability, than single string structure, has better stability.Adopt the encapsulation of high-purity acid anhydrides based epoxy resin, good airproof performance, and the embedding respectively of minute secondary, carry out respectively hot setting, can effectively discharge fuse inner air and box body bottom air gap, prevents that corrosion causes capacity attenuation to core material for outside humidity and inner air.The shell and the sealing thermal insulation layer that adopt high flame resistance, all reach UL94 V-0 level, can effectively avoid the naked light combustion phenomena that causes because of a variety of causes, reduces disaster hidden-trouble.

For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and distortion all should belong to the protection range of the utility model claim within.

Claims

1. a kind of smart electric meter film capacitor is characterized in that: it comprises electric capacity core, two gold electrodes, two electrode lead wires, acid anhydride epoxy resin seal insulation layer and PBT plastic shell; Two gold electrodes are sprayed on the surface of this electric capacity core respectively The two ends and the two electrode leads are respectively welded on the two gold electrodes; the capacitor core is housed in the PBT plastic shell, and an anhydride-based epoxy resin sealing and heat insulating layer is filled between the capacitor core and the PBT plastic shell.

2. The smart meter film capacitor according to claim 1, characterized in that: the capacitor core comprises an outer core and an inner core, and the inner core comprises a polypropylene high-temperature-resistant base film and two spacers plated on the polypropylene high-temperature-resistant base film Distributed pure aluminum metal coating, the outer core includes a polypropylene high temperature resistant base film and a pure aluminum metal coating coated on the middle part of the polypropylene high temperature resistant base film; the inner core and the outer core are superimposed and wound to form an electrical series structure cylindrical capacitor core.