CN114093664A - Filter capacitor - Google Patents

Filter capacitor Download PDF

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Publication number
CN114093664A
CN114093664A CN202111360195.7A CN202111360195A CN114093664A CN 114093664 A CN114093664 A CN 114093664A CN 202111360195 A CN202111360195 A CN 202111360195A CN 114093664 A CN114093664 A CN 114093664A
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China
Prior art keywords
capacitor
vibration
case
damping
filter capacitor
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Granted
Application number
CN202111360195.7A
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Chinese (zh)
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CN114093664B (en
Inventor
丁国君
刘阳
郭磊
姚伟
程思远
朱广杰
李珊珊
钱诗林
王栋
辛伟峰
马德英
王磊磊
王东晖
关弘路
詹振宇
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State Grid Corp of China SGCC
State Grid Henan Electric Power Co Ltd
Electric Power Research Institute of State Grid Henan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Henan Electric Power Co Ltd
Electric Power Research Institute of State Grid Henan Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, State Grid Henan Electric Power Co Ltd, Electric Power Research Institute of State Grid Henan Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN202111360195.7A priority Critical patent/CN114093664B/en
Publication of CN114093664A publication Critical patent/CN114093664A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10—Housing; Encapsulation
    • H01G2/106—Fixing the capacitor in a housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/16—Capacitors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Filters And Equalizers (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

The invention relates to a filter capacitor, which comprises a capacitor shell, a capacitor element, an incoming line, an outgoing line, a vibration isolation connecting part and a vibration damping and noise reducing device, wherein the capacitor element is arranged in the capacitor shell and is connected with the capacitor shell through the vibration damping and noise reducing device, the incoming line and the outgoing line are both flexible wires, and the vibration isolation connecting part is arranged outside the capacitor shell and is fixedly connected with the capacitor shell. It can block vibration transmission and noise propagation inside the filter capacitor.

Description

Filter capacitor
Technical Field
The invention relates to the technical field of filter capacitors, in particular to a filter capacitor.
Background
When the unbalanced electric field force passes through the capacitor, the internal components of the capacitor can vibrate. The reports of CIGRE and IEC report that the audible noise of the filter capacitor of the high-voltage converter station can reach 105dB (A) at most and seriously exceed the specified standard. The long-term excessive vibration can also cause great damage to the capacitor body structure, the service life of the capacitor body structure is seriously shortened, even faults are caused, and huge economic loss is caused.
At present, noise reduction is carried out on a filter capacitor by widely adopting a sound insulation cover or a method of filling sound insulation cotton in the sound insulation cover, but the sound insulation cover is relatively heavy, uncertain factors are brought to the stability of a filter capacitor tower, and the noise reduction effect of the sound insulation cotton filled in the sound insulation cover is relatively limited. Patent document CN214588463U discloses a noise reduction device for a power filter capacitor, which includes a base, a cylinder with an opening at the lower part; the cylinder body is covered on the base to form a closed structure for placing the power filter capacitor, a sound insulation cavity communicated with the side wall and the top wall of the cylinder body are arranged in the side wall and the top wall of the cylinder body, and the top wall of the cylinder body is provided with two through holes for extending out of the conductive columns of the power filter capacitor; and a rubber ring for sleeving the periphery of the conductive column is arranged in each through hole, and the rubber ring is connected with the inner wall of each through hole through an elastic sealing material. The technical scheme has a certain noise reduction effect, but the requirement is difficult to meet when the technical scheme is used alone.
Disclosure of Invention
An object of the present invention is to provide a filter capacitor to block vibration transmission and noise propagation inside the filter capacitor.
The technical scheme of the invention is as follows:
the utility model provides a filter capacitor, includes capacitor case, capacitor element, inlet wire, is qualified for the next round of competitions, vibration isolation connecting portion and damping and falls the device of making an uproar, capacitor element sets up in the capacitor case and pass through damping fall the device of making an uproar with capacitor case connects, inlet wire and outlet wire are the flexible conductor, vibration isolation connecting portion set up capacitor case foreign side and with capacitor case fixed connection.
Preferably, the flexible conductor is a flexible copper wire.
Preferably, the device of making an uproar falls in damping includes that the device of making an uproar falls in the lead terminal damping, the device of making an uproar falls in the lead terminal damping includes soft sound absorbing layer, stereoplasm sound absorbing layer and the elasticity damping layer that sets up in order, soft sound absorbing layer is close to the capacitor shell sets up, the elasticity damping layer is close to the capacitor element sets up.
Preferably, the device of making an uproar falls in damping includes that the device of making an uproar falls in the non-lead terminal damping, the device of making an uproar falls in the non-lead terminal damping includes vacuum puigging, soft sound absorbing layer, stereoplasm sound absorbing layer and the elasticity damping layer that sets up in order, the vacuum puigging is close to the capacitor casing sets up, the elasticity damping layer is close to capacitor element sets up.
More preferably, the soft sound absorbing layer is made of sound absorbing cotton.
Further preferably, the hard sound absorbing layer is a porous sound absorbing plate.
Further preferably, the elastic damping layer is a polyurethane elastomer.
Still more preferably, the polyurethane elastomer has a closed cell content of 93% to 96%.
Still further preferably, an insulating heat conduction layer is further disposed between the elastic vibration damping layer and the capacitor element, the capacitor case is a heat conductor, and the insulating heat conduction layer is in heat conduction connection with the capacitor case.
Preferably, the vibration-damping and noise-reducing device is composed of a lead-end vibration-damping and noise-reducing device and a non-lead-end vibration-damping and noise-reducing device, and the vibration-isolating connection portion is provided at a side portion between the lead-end vibration-damping and noise-reducing device and the non-lead-end vibration-damping and noise-reducing device.
Preferably, the vibration isolation connecting part comprises a first end shell, a second end shell, a damping spring and a polyurethane elastomer, the first end shell and the second end shell are movably connected in the connecting direction, one end of the damping spring is fixedly connected with the first end shell, the other end of the damping spring is fixedly connected with the second end shell, and the polyurethane elastomer is filled in a cavity among the first end shell, the second end shell and the damping spring.
The invention has the beneficial effects that:
1. the incoming line and the outgoing line of the filter capacitor are set as flexible wires, so that the effect of transmitting vibration to the outside through the incoming line and the outgoing line is weakened; the vibration and noise reduction device reduces the vibration transmission effect and the sound transmission effect between the capacitor element and the capacitor shell; the vibration isolation connecting part reduces the vibration transmission effect of the capacitor shell and the support while realizing the fixation of the capacitor shell and the support.
2. The elastic vibration damping layer is arranged close to the capacitor element for the purpose of damping vibration and then silencing, so that the sound wave energy generated by the capacitor element can be reduced. The hard sound absorption layer not only has sound absorption effect, but also can distribute vibration impact transmitted by the elastic vibration reduction layer. The sound absorbing material is distinguished from the sound insulating material by: the sound insulation material reduces the sound transmittance by reflecting sound waves; sound absorbing materials reduce sound transmission through dissipation of sound wave energy. The vibration source of the filter capacitor is mainly applied to the lead terminals and the non-lead terminals of the capacitor case, and the side vibration thereof is relatively small. The use of the soundproof layer allows sound waves transmitted in the end direction to pass through the side surface, and is not useful for noise reduction.
3. The sound absorption effect of the sound absorption cotton is good, and the higher the aperture ratio is, the better the sound absorption effect is. But its elasticity is poor, so that the elastic damping layer is required to damp.
4. The porous sound-absorbing plate can absorb sound, and the hard characteristic of the porous sound-absorbing plate can distribute vibration impact transmitted by the elastic vibration-absorbing layer.
5. When the polyurethane is used as an elastomer, the higher the closed cell ratio, the better the elasticity.
6. The polyurethane elastomer with the closed porosity of 93-96% can give consideration to both the sound wave reflectivity and the elasticity. When the closed porosity exceeds 96%, a large amount of sound is transmitted from the side of the filter capacitor, and the sound wave energy absorbed by the soft sound absorbing layer is small. When the closed porosity is less than 93%, the polyurethane elastomer has poor elastic effect and poor vibration damping effect, so that excessive vibration is transmitted to the soft sound absorption layer to compress pores in the soft sound absorption layer, thereby causing poor sound absorption effect.
7. The polyurethane elastomer has a heat insulation effect, and the heat insulation and conduction layer is arranged between the elastic vibration reduction layer and the capacitor element, so that the heat dissipation effect of the filter capacitor can be improved.
8. The vibration isolation connecting part is arranged on the side between the lead end vibration reduction and noise reduction device and the non-lead end vibration reduction and noise reduction device, so that the lateral shaking range of the filter capacitor under the vibration effect can be reduced, and the service life of the filter capacitor is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a filter capacitor.
Fig. 2 is a schematic structural view of a vibration isolation connection portion of a filter capacitor.
The reference numbers indicate, 1-capacitor case, 2-capacitor element, 31-incoming line, 32-outgoing line, 4-lead terminal vibration and noise reduction device, 41-first soft sound absorbing layer, 42-first hard sound absorbing layer, 43-first elastic vibration absorbing layer, 5-non-lead terminal vibration and noise reduction device, 51-vacuum sound insulating layer, 52-first soft sound absorbing layer, 53-first hard sound absorbing layer, 54-first elastic vibration absorbing layer, 6-vibration isolation connecting part, 61-first end case, 62-second end case, 63-damping spring, 64-polyurethane elastomer.
Detailed Description
The present invention is described below in terms of embodiments in conjunction with the accompanying drawings to assist those skilled in the art in understanding and implementing the present invention. Unless otherwise indicated, the following embodiments and technical terms therein should not be understood to depart from the background of the technical knowledge in the technical field.
Example 1: the utility model provides a filter capacitor, refers to fig. 1, and including capacitor case 1, capacitor element 2, inlet wire 31, play line 32, vibration isolation connecting portion 6 and damping and noise reduction device, capacitor element 2 sets up in capacitor case 1, and capacitor element 2 falls the device of making an uproar through the damping and is connected with capacitor case 1, and inlet wire 31 and play line 32 are flexible conductor, and vibration isolation connecting portion 6 sets up in capacitor case 1 outsidely, vibration isolation connecting portion 6 and capacitor case 1 fixed connection.
In this embodiment, the flexible conductor is a flexible copper wire.
In this embodiment, the vibration-damping and noise-reducing device is composed of a lead-end vibration-damping and noise-reducing device 4 and a non-lead-end vibration-damping and noise-reducing device 5, and the vibration-isolating connecting portion 6 is provided in a lateral direction between the lead-end vibration-damping and noise-reducing device 4 and the non-lead-end vibration-damping and noise-reducing device 6.
In this embodiment, the lead-end vibration-damping noise-reducing device 4 includes a first soft sound-absorbing layer 41, a first hard sound-absorbing layer 42, and a first elastic vibration-damping layer 43, which are sequentially provided, the first soft sound-absorbing layer 41 being provided adjacent to the capacitor case 1, and the first elastic vibration-damping layer 43 being provided adjacent to the capacitor element 2.
Wherein, the first soft sound-absorbing layer 41 is made of sound-absorbing cotton. The first rigid sound absorbing layer 42 is selected from a porous sound absorbing sheet. The first elastic damping layer 43 is selected from polyurethane elastomers. The closed pore rate of the polyurethane elastomer is 93-96%.
In this embodiment, the non-lead-end vibration/noise reduction device 2 includes a vacuum sound insulation layer 51, a second soft sound absorption layer 52, a second hard sound absorption layer 53, and a second elastic vibration reduction layer 54, which are sequentially provided, the vacuum sound insulation layer 51 being provided adjacent to the capacitor case 1, and the second elastic vibration reduction layer 54 being provided adjacent to the capacitor element 2.
Wherein, the second soft sound-absorbing layer 52 is made of sound-absorbing cotton. The second rigid sound-absorbing layer 53 is selected from a porous sound-absorbing sheet. The second elastomeric damping layer 54 is selected from polyurethane elastomers. The closed pore rate of the polyurethane elastomer is 93-96%.
In order to enhance the heat dissipation effect of the filter capacitor, a first insulating heat conduction layer (not shown) is further disposed between the first elastic damping layer 43 and the capacitor element 2, the capacitor case 1 is a heat conductor, and the first insulating heat conduction layer is in heat conduction connection with the capacitor case 1. A second insulating and thermally conductive layer (not shown) is also arranged between the second elastic damping layer 54 and the capacitor element 2, which second insulating and thermally conductive layer is thermally conductively connected to the capacitor housing 1. Common insulating heat-conducting layers include heat-conducting silica gel sheets and non-silicon heat-conducting pads.
In this embodiment, referring to fig. 2, the vibration isolation connecting portion 6 includes a first end shell 61, a second end shell 62, a damping spring 63, and a polyurethane elastomer 64, where the first end shell 61 and the second end shell 62 are movably connected in a connecting direction, one end of the damping spring 63 is fixedly connected to the first end shell 61, the other end is fixedly connected to the second end shell 62, and the polyurethane elastomer 64 is filled in a cavity between the first end shell 61, the second end shell 62, and the damping spring 63. The first end case 61 is fixedly connected to the capacitor case 61.
The invention is described in detail above with reference to the figures and examples. It should be understood that in practice the description of all possible embodiments is not exhaustive and that the inventive concepts are described herein as far as possible by way of illustration. Without departing from the inventive concept of the present invention and without any creative work, a person skilled in the art should, in all of the embodiments, make optional combinations of technical features and experimental changes of specific parameters, or make a routine replacement of the disclosed technical means by using the prior art in the technical field to form specific embodiments, which belong to the content implicitly disclosed by the present invention.

Claims (10)

1. The utility model provides a filter capacitor, includes capacitor case, capacitor element, inlet wire, is qualified for the next round of competitions, its characterized in that still includes vibration isolation connecting portion and vibration damping and falls the device of making an uproar, capacitor element sets up in the capacitor case and through the vibration damping fall the device of making an uproar with capacitor case connects, inlet wire and play line are the flexible conductor, vibration isolation connecting portion set up capacitor case foreign side and with capacitor case fixed connection.
2. The filter capacitor of claim 1, wherein the pigtails are copper pigtail wires.
3. The filter capacitor of claim 1, wherein the vibration and noise reduction means comprises lead-end vibration and noise reduction means comprising a soft sound-absorbing layer disposed adjacent to the capacitor case, a hard sound-absorbing layer, and an elastic vibration-damping layer disposed adjacent to the capacitor element, in that order.
4. The filter capacitor of claim 1, wherein the vibration and noise reducing device comprises a non-lead-end vibration and noise reducing device comprising a vacuum insulation layer disposed adjacent to the capacitor case, a soft sound absorbing layer, a hard sound absorbing layer, and an elastic vibration absorbing layer disposed adjacent to the capacitor element, in that order.
5. Filter capacitor according to claim 3 or 4, characterised in that the rigid sound-absorbing layer is a porous sound-absorbing plate.
6. Filter capacitor according to claim 3 or 4, characterised in that the elastic damping layer is a polyurethane elastomer.
7. The filter capacitor of claim 6, wherein the polyurethane elastomer has a closed cell content of 93% to 96%.
8. The filter capacitor of claim 6 further comprising an insulating and thermally conductive layer between the elastomeric damping layer and the capacitor element, wherein the capacitor case is a thermal conductor, and wherein the insulating and thermally conductive layer is thermally coupled to the capacitor case.
9. The filter capacitor of claim 1, wherein the vibration damping and noise reducing devices are comprised of lead-end vibration damping and noise reducing devices and non-lead-end vibration damping and noise reducing devices, and the vibration isolation connection is disposed laterally between the lead-end vibration damping and noise reducing devices and the non-lead-end vibration damping and noise reducing devices.
10. The filter capacitor of claim 1, wherein the vibration isolation coupling part comprises a first end case, a second end case, a damping spring and a polyurethane elastomer, the first end case and the second end case are movably coupled in a coupling direction, one end of the damping spring is fixedly coupled to the first end case, the other end of the damping spring is fixedly coupled to the second end case, and the polyurethane elastomer is filled in a cavity between the first end case, the second end case and the damping spring.
CN202111360195.7A 2021-11-17 2021-11-17 Filter capacitor Active CN114093664B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114724851A (en) * 2022-04-01 2022-07-08 河海大学 Filter capacitor for converter station

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202405109U (en) * 2011-11-29 2012-08-29 安徽赛福电子有限公司 Shake-proof locomotive capacitor
CN205428699U (en) * 2016-04-01 2016-08-03 重庆水利电力职业技术学院 Power capacitor mounting structure of transformer substation assembly
CN107588151A (en) * 2017-09-07 2018-01-16 长沙小新新能源科技有限公司 Wind power generation plant
CN110767446A (en) * 2019-11-05 2020-02-07 国家电网有限公司 Noise reduction device and noise reduction method for power filter capacitor
CN212783076U (en) * 2020-06-19 2021-03-23 深圳市鑫华琪科技有限公司 Anti-interference capacitor of metallized polyester film
CN213691427U (en) * 2020-11-17 2021-07-13 中国矿业大学(北京) Multistage noise reduction device for high-voltage filter capacitor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202405109U (en) * 2011-11-29 2012-08-29 安徽赛福电子有限公司 Shake-proof locomotive capacitor
CN205428699U (en) * 2016-04-01 2016-08-03 重庆水利电力职业技术学院 Power capacitor mounting structure of transformer substation assembly
CN107588151A (en) * 2017-09-07 2018-01-16 长沙小新新能源科技有限公司 Wind power generation plant
CN110767446A (en) * 2019-11-05 2020-02-07 国家电网有限公司 Noise reduction device and noise reduction method for power filter capacitor
CN212783076U (en) * 2020-06-19 2021-03-23 深圳市鑫华琪科技有限公司 Anti-interference capacitor of metallized polyester film
CN213691427U (en) * 2020-11-17 2021-07-13 中国矿业大学(北京) Multistage noise reduction device for high-voltage filter capacitor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114724851A (en) * 2022-04-01 2022-07-08 河海大学 Filter capacitor for converter station
CN114724851B (en) * 2022-04-01 2024-04-26 河海大学 Filter capacitor for converter station

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