CN105390282A - Capacitive element with muffling apparatus - Google Patents

Capacitive element with muffling apparatus Download PDF

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Publication number
CN105390282A
CN105390282A CN201510908031.1A CN201510908031A CN105390282A CN 105390282 A CN105390282 A CN 105390282A CN 201510908031 A CN201510908031 A CN 201510908031A CN 105390282 A CN105390282 A CN 105390282A
Authority
CN
China
Prior art keywords
noise reduction
insulating
capacity cell
capacitive element
muffling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510908031.1A
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Chinese (zh)
Other versions
CN105390282B (en
Inventor
王啸罡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Sichuan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Sichuan Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, State Grid Sichuan Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201510908031.1A priority Critical patent/CN105390282B/en
Publication of CN105390282A publication Critical patent/CN105390282A/en
Application granted granted Critical
Publication of CN105390282B publication Critical patent/CN105390282B/en
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G2/00Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10Housing; Encapsulation
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162Selection of materials

Abstract

The invention discloses a capacitive element with a muffling apparatus. The capacitive element comprises a metal housing, a capacitive core and a binding post, wherein the binding post is connected with the capacitive core; the space between the capacitive core and the metal housing is filled with an insulating material; an insulating muffling housing is also arranged outside the metal housing; the insulating muffling housing is made from an insulating sound absorption material; a layer of gap is formed between the metal housing and the insulating muffling housing; and the gap is filled with glass fiber acoustic wool. The invention aims to provide the capacitive element with the muffling apparatus to solve the problem that a capacitive element is not provided with a muffling apparatus in the prior art, and achieve the purpose of lowering the noise generated in the working process of the capacitive element.

Description

A kind of capacity cell with noise eliminator
Technical field
The present invention relates to capacity cell field, specifically relate to a kind of capacity cell with noise eliminator.
Background technology
Capacity cell is a kind of ideal element characterizing circuit element storage charge characteristic, and its archetype is the plate condenser separated by two pieces of metal polar plate centre dielectrics.After add voltage on two-plate, pole plate gathers respectively the positive and negative charge of equivalent, between two pole plates, produce electric field, the more, the electric field formed is just stronger, and the electric field energy stored by capacity cell is also just large for the electric charge gathered.Capacitor is one of a large amount of electronic component used in electronic equipment, be widely used in circuit every aspects such as straight-through friendship, coupling, bypass, filtering, resonant tank, power conversion, controls.Along with making rapid progress of electronic information technology, the update speed goes of digital electronic goods is fast, based on the consumer electronics product volume of production and marketing sustainable growth of the products such as panel TV, notebook computer, digital camera, further promote the development of capacitor industry.
But the electrical appliance of all working under alternating voltage, under the effect of alternating electromagnetism field force, all can generation in various degree vibrate, capacity cell is no exception.When applying alternating voltage at capacity cell two exit, namely two-plate being brought the equal electrically contrary electric charge of quantity, between pole plate, setting up alternating electromagnetic field.Under the effect of electric field force, two-plate attracts each other, and the size of this power changes along with the change of alternating voltage, thus causes pole plate to vibrate.Along with voltage raises, this Oscillation Amplitude increases, and when voltage acquires a certain degree, vibration frequency reaches in the frequency range that people's ear can receive, and we will hear this sound, i.e. the noise that produces of capacity cell.In existing capacity cell use procedure, people mostly mistake think that this sound is inevitable current sound, do not draw attention to this noise, the long-term impact by this noise, easily causes user to upset, even affect hearing.
Summary of the invention
The object of the present invention is to provide a kind of capacity cell with noise eliminator, solving capacity cell in prior art does not have the problem of silencing means, realizes the object reducing the noise produced in the capacity cell course of work.
The present invention is achieved through the following technical solutions:
A kind of capacity cell with noise eliminator, comprise metal shell, capacitor core, binding post, described binding post is connected with described capacitor core, insulating material is filled with between described capacitor core and described metal shell, insulation noise reduction shell is also provided with outside described metal shell, described insulation noise reduction shell is made up of the sound-absorbing material insulating, and has a lamellar spacing, be filled with glass fibre acoustical cotton in described gap between described metal shell and described insulation noise reduction shell.The problem of silencing means is not had for existing capacity cell, the present invention adds the insulation noise reduction shell be made up of the sound-absorbing material insulating at the extenal fixation of existing capacity cell, absorb the noise that described capacitor core vibration produces by the porousness of sound-absorbing material, membrane action or resonant interaction.When Acoustic Wave Propagation is to described insulation noise reduction shell surperficial, first be the air movement that the vibration produced due to sound wave causes in sound-absorbing material micropore, cause the friction with hole wall, but not easily move by the impact of hole wall viscous force near the air of hole wall surface, due to friction and the effect of viscous force, make that quite a few acoustic energy is irreversible is converted into heat energy, thus make SATT, reach the object of sound absorption; Secondly, the thermal loss that the air in micropore and the heat exchange between hole wall cause, also makes sound energy attenuation, thus continues to reduce the acoustic wave energy outwards propagated.In addition, in the gap between described metal shell and described insulation noise reduction shell, be filled with glass fibre acoustical cotton, by the hole be communicated with in glass fibre, weaken the acoustic wave energy outwards propagated further, reduce the noise that capacity cell sends.
Further, described insulation noise reduction shell is made up of hole wood abatvoix.Hole wood abatvoix is a kind of front in density board, the structure sound-absorbing material of circular hole is all opened at the back side, have that sound-absorbing effect is good, intensity is high, high temperature resistant, insulation, dust-proof, light weight, long service life, the feature such as environmental protection, be convenient to installation and use.
To sum up, the present invention compared with prior art, by the insulation noise reduction shell be fixedly installed outside capacity cell, and filled glass fiber acoustical cotton in gap between described metal shell and described insulation noise reduction shell, thus realize the object reducing the noise produced in the capacity cell course of work.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's specific embodiment.
Numbering in figure is followed successively by: 1-metal shell, 2-capacitor core, 3-binding post, 4-insulation noise reduction shell, 5-gap.
Embodiment
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment 1:
A kind of capacity cell with noise eliminator as shown in the figure, comprise metal shell 1, capacitor core 2, binding post 3, described binding post 3 is connected with described capacitor core 2, insulating material is filled with between described capacitor core 2 and described metal shell 1, insulation noise reduction shell 4 is also provided with outside described metal shell 1, described insulation noise reduction shell 4 is made up of the sound-absorbing material insulating, and has a lamellar spacing 5, be filled with glass fibre acoustical cotton in described gap 5 between described metal shell 1 and described insulation noise reduction shell 4.The present invention adds the insulation noise reduction shell 4 be made up of the sound-absorbing material insulating at the extenal fixation of existing capacity cell, vibrate the noise produced absorb by the porousness of sound-absorbing material, membrane action or resonant interaction to described capacitor core 2.When Acoustic Wave Propagation is to described insulation noise reduction shell 4 surperficial, first be the air movement that the vibration produced due to sound wave causes in sound-absorbing material micropore, cause the friction with hole wall, but not easily move by the impact of hole wall viscous force near the air of hole wall surface, due to friction and the effect of viscous force, make that quite a few acoustic energy is irreversible is converted into heat energy, thus make SATT, reach the object of sound absorption; Secondly, the thermal loss that the air in micropore and the heat exchange between hole wall cause, also makes sound energy attenuation, thus continues to reduce the acoustic wave energy outwards propagated.In addition, in the gap 5 between described metal shell 1 and described insulation noise reduction shell 4, be filled with glass fibre acoustical cotton, by the hole be communicated with in glass fibre, weaken the acoustic wave energy outwards propagated further, reduce the noise that capacity cell sends.
Embodiment 2:
A kind of capacity cell with noise eliminator as shown in the figure, on the basis of embodiment 1, described insulation noise reduction shell 4 is made up of hole wood abatvoix.Hole wood abatvoix is a kind of front in density board, the structure sound-absorbing material of circular hole is all opened at the back side, have that sound-absorbing effect is good, intensity is high, high temperature resistant, insulation, dust-proof, light weight, long service life, the feature such as environmental protection, be convenient to installation and use.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. the capacity cell with noise eliminator, comprise metal shell (1), capacitor core (2), binding post (3), described binding post (3) is connected with described capacitor core (2), insulating material is filled with between described capacitor core (2) and described metal shell (1), it is characterized in that: outside described metal shell (1), be also provided with insulation noise reduction shell (4), described insulation noise reduction shell (4) is made up of the sound-absorbing material insulating, a lamellar spacing (5) is had between described metal shell (1) and described insulation noise reduction shell (4), described gap is filled with glass fibre acoustical cotton in (5).
2. a kind of capacity cell with noise eliminator according to claim 1, is characterized in that: described insulation noise reduction shell (4) is made up of hole wood abatvoix.
CN201510908031.1A 2015-12-10 2015-12-10 A kind of capacity cell with silencing apparatus Active CN105390282B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510908031.1A CN105390282B (en) 2015-12-10 2015-12-10 A kind of capacity cell with silencing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510908031.1A CN105390282B (en) 2015-12-10 2015-12-10 A kind of capacity cell with silencing apparatus

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CN105390282A true CN105390282A (en) 2016-03-09
CN105390282B CN105390282B (en) 2018-01-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113421566A (en) * 2021-08-20 2021-09-21 航天科工通信技术研究院有限责任公司 Portable voice noise reduction device based on wind noise

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103065790A (en) * 2012-12-31 2013-04-24 桂林电力电容器有限责任公司 High voltage power capacitor integrated sound insulation cover plate
CN204167111U (en) * 2014-08-29 2015-02-18 合容电气股份有限公司 Double-layer composite low noise capacitor
CN204537849U (en) * 2015-04-01 2015-08-05 葛剑萍 With the composite dielectric capacitor of noise reduction mouth
CN205159102U (en) * 2015-12-10 2016-04-13 国网四川省电力公司巴中供电公司 Noise device falls in capacity cell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103065790A (en) * 2012-12-31 2013-04-24 桂林电力电容器有限责任公司 High voltage power capacitor integrated sound insulation cover plate
CN204167111U (en) * 2014-08-29 2015-02-18 合容电气股份有限公司 Double-layer composite low noise capacitor
CN204537849U (en) * 2015-04-01 2015-08-05 葛剑萍 With the composite dielectric capacitor of noise reduction mouth
CN205159102U (en) * 2015-12-10 2016-04-13 国网四川省电力公司巴中供电公司 Noise device falls in capacity cell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113421566A (en) * 2021-08-20 2021-09-21 航天科工通信技术研究院有限责任公司 Portable voice noise reduction device based on wind noise
CN113421566B (en) * 2021-08-20 2021-11-12 航天科工通信技术研究院有限责任公司 Portable voice noise reduction device based on wind noise

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