CN205303192U - Three -phase AC filtering film capacitor - Google Patents
Three -phase AC filtering film capacitor Download PDFInfo
- Publication number
- CN205303192U CN205303192U CN201520699814.9U CN201520699814U CN205303192U CN 205303192 U CN205303192 U CN 205303192U CN 201520699814 U CN201520699814 U CN 201520699814U CN 205303192 U CN205303192 U CN 205303192U
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- capacitance core
- film capacitor
- core subgroup
- thin film
- alternating current
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Abstract
The utility model discloses a three -phase AC filtering film capacitor, it includes the casing, the casing has the appearance chamber, it has electric capacity core group to hold the intracavity arrangement, the quantity of electric capacity core group is more than 2, connect through the internal connection copper bar between the electric capacity core group, the top of casing is equipped with the upper cover, extraction electrode is installed to the upper cover, just extraction electrode with the internal connection copper bar is connected. The utility model provides a three -phase AC filtering film capacitor is the dry -type structure, and it is good to have the leakproofness, and advantages such as no oil spill risk are insulating plastic all around except that the electrode, safe and reliable, and partial discharge's emergence can effectively be avoided in the use under high -pressure occasion.
Description
[technical field]
This utility model relates generally to a kind of three-phase alternating current filtering thin film capacitor.
[background technology]
Using electric capacity with carrying out reactive-load compensation, administering the occasion of harmonic wave, it is generally adopted the mode of Capacitance parallel connection, because filter capacitor itself has certain stray inductance, stray inductance is more high, the electric current of high frequency can produce stray voltage so that output effect is undesirable, causes that output voltage is unstable, even there is resonance with electric capacity itself in stray inductance, causes the inefficacy of electric capacity. So, using the electric capacity that stray inductance is big, the regulation effect of harmonic wave will not be especially desirable, can be even sometimes a kind of interference, electrical network is formed " pollution ". And the noninductive electric capacity selected is when carrying out reactive-load compensation, its " noninductive " simply describes that capacitive parasitic inductance is only small, is typically in about 200nH, and so high stray inductance, in the power utilization environment that harmonic wave is serious, general electric capacity not can meet user demand.
[utility model content]
The problem high for solving general capacitor self-inductance, the utility model proposes a kind of three-phase alternating current filtering thin film capacitor.
This three-phase alternating current filter capacitor adopts following technical scheme:
A kind of three-phase alternating current filtering thin film capacitor, it includes housing, described housing has cavity volume, capacitance core subgroup it is mounted with in described cavity volume, the quantity of described capacitance core subgroup is more than 2, connects copper bar by inside and connect between described capacitance core subgroup, and the top of described housing is provided with upper cover, described upper cover is provided with extraction electrode, and described extraction electrode connects with the described internal copper bar that is connected.
Vacuum encapsulation is adopted as the further scheme of this utility model, fill insulant in described cavity volume, and described insulant.
As the further scheme of this utility model, described capacitance core subgroup adopts noninductive winding gold spraying manner to make.
As the further scheme of this utility model, described capacitance core subgroup is made up of the electric capacity pellet that quantity is more than 2.
As the further scheme of this utility model, the material of described housing adopts aluminium alloy.
As the further scheme of this utility model, the material of described upper cover adopts electronic isolation fluid sealant.
As the further scheme of this utility model, described capacitance core subgroup includes the first capacitance core subgroup, the second capacitance core subgroup and the 3rd capacitance core subgroup.
As the further scheme of this utility model, described first capacitance core subgroup, described second capacitance core subgroup adopt delta connection to be connected with described 3rd capacitance core subgroup.
As the further scheme of this utility model, between described first capacitance core subgroup, described second capacitance core subgroup and described 3rd capacitance core subgroup, parallel connection is welded on and described internal is connected copper bar.
As the further scheme of this utility model, the quantity of described extraction electrode is 3.
This utility model compares produced beneficial effect with background technology:
This utility model proposed three-phase alternating current filtering thin film capacitor be dry construction, there is good airproof performance, without advantages such as leakage of oil risks, surrounding is ambroin except electrode, safe and reliable, and the use under high pressure occasion can be prevented effectively from the generation of shelf depreciation.
[accompanying drawing explanation]
Fig. 1 filters thin film capacitor structure schematic diagram for the three-phase alternating current in the provided preferred embodiment of this utility model;
Fig. 2 filters thin film capacitor schematic perspective view for the three-phase alternating current in the provided preferred embodiment of this utility model;
Fig. 3 is the capacitance core subgroup structural representation in the provided preferred embodiment of this utility model;
Fig. 4 is the delta connection schematic diagram in the provided preferred embodiment of this utility model.
[detailed description of the invention]
Being described below in detail embodiment of the present utility model, described embodiment example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.
In description of the present utility model, it should be noted that, for the noun of locality, if any term " " center ", " laterally (X) ", " longitudinally (Y) ", " vertical (Z) " " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", indicating positions such as " counterclockwise " and position relationship are based on orientation shown in the drawings or position relationship, it is for only for ease of narration this utility model and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with particular orientation structure and operation, it is not intended that limit concrete protection domain of the present utility model.
Additionally, if any term " first ", " second " only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating technical characteristic. Thus, defining " first ", " second " feature can be expressed or implicit include one or more this feature, in this utility model describes, " several " are meant that two or more, unless otherwise expressly limited specifically.
In this utility model, except as otherwise clear stipulaties and restriction, should go to understand as broad sense if any term " assembling ", " being connected ", " connection " term, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly; Can also be mechanically connected; Can be joined directly together, it is also possible to be connected by intermediary, it is possible to be that two element internals are connected. For those of ordinary skills, it is possible to understand above-mentioned term concrete meaning in this utility model as the case may be.
In utility model, unless otherwise prescribed and limit, fisrt feature second feature it " on " or D score can include the first and second features and directly contact, it is also possible to include fisrt feature and second feature be not directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " under " and " above " include fisrt feature directly over second feature and oblique upper, or be only the height representing fisrt feature level height higher than second feature. Fisrt feature second feature " on ", " under " and " below " include fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height lower than second feature.
Below in conjunction with the accompanying drawing of description, by detailed description of the invention of the present utility model is further described, make the technical solution of the utility model and beneficial effect thereof clearly, clearly. Describe embodiment below with reference to accompanying drawing to be illustrative of, it is intended to explain this utility model, and it is not intended that to restriction of the present utility model.
The preferred embodiment that this utility model provides: as shown in Fig. 1 ~ Fig. 4, a kind of three-phase alternating current filtering thin film capacitor adopts rectangular structure, it is possible to needs according to power and does massive structure, uses and installs without going here and there many more and processing, and application is convenient. It includes Al-alloy casing 10, the top of described housing 10 is provided with upper cover 11, and the material of described upper cover 11 adopts electronic isolation fluid sealant, and described upper cover 11 is provided with extraction electrode 20, the quantity of described extraction electrode 20 is 3, and described extraction electrode 20 is connected copper bar 21 with described inside and connects.
Described housing 10 has cavity volume 12, fill insulant in described cavity volume 12, and described insulant and adopts vacuum encapsulation, it is to avoid the generation of air bubble, shelf depreciation will not occur in inside. It is mounted with capacitance core subgroup 30 in described cavity volume 12, described capacitance core subgroup 30 includes the first capacitance core subgroup the 31, second capacitance core subgroup 32 and the 3rd capacitance core subgroup 33, by described internal connection copper bar 21 welding in parallel between described capacitance core subgroup 30, and described first capacitance core subgroup 31, described second capacitance core subgroup 32 adopt delta connection to be connected with described 3rd capacitance core subgroup 33.
Described capacitance core subgroup 30 adopts noninductive winding gold spraying manner to make, and described capacitance core subgroup 30 is made up of the electric capacity pellet that quantity is more than 2.
Described three-phase alternating current filtering thin film capacitor needs to be set as three groups of capacitance core subgroups by measure, described capacitance core subgroup is noninductive winding gold spraying manner and makes, adopt single design, avoiding going here and there and connect the stray inductance caused across face to increase, three core assembly of arrangement of lying on one's side use copper bar to be attached by delta connection. Internal by larger areas of copper dissipation heat, dispel the heat relatively uniform and efficiency high; Extremely low stray inductance, can be used in the electric energy environment that harmonic wave is serious.
In the description of description, the description of reference term " embodiment ", " preferably ", " example ", " concrete example " or " some examples " etc. means the specific features, structure, material or the feature that describe in conjunction with this embodiment or example, it is contained at least one embodiment of the present utility model or example, in this manual the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example. And, the specific features of description, structure, material or feature can combine in a suitable manner in any one or more embodiments or example.
Description by above-mentioned structure and principle; person of ordinary skill in the field is to be understood that; this utility model is not limited to above-mentioned detailed description of the invention; the improvement and the replacement that adopt techniques well known on this utility model basis all fall within protection domain of the present utility model, should be limited it by each claim.
Claims (10)
1. a three-phase alternating current filtering thin film capacitor, it includes housing, it is characterized in that: described housing has cavity volume, capacitance core subgroup it is mounted with in described cavity volume, the quantity of described capacitance core subgroup is more than 2, connects copper bar by inside and connect between described capacitance core subgroup, and the top of described housing is provided with upper cover, described upper cover is provided with extraction electrode, and described extraction electrode connects with the described internal copper bar that is connected.
2. three-phase alternating current according to claim 1 filtering thin film capacitor, it is characterised in that: fill insulant in described cavity volume, and described insulant employing vacuum encapsulation.
3. three-phase alternating current according to claim 1 and 2 filtering thin film capacitor, it is characterised in that: described capacitance core subgroup adopts noninductive winding gold spraying manner to make.
4. three-phase alternating current according to claim 1 and 2 filtering thin film capacitor, it is characterised in that: described capacitance core subgroup is made up of the electric capacity pellet that quantity is more than 2.
5. three-phase alternating current according to claim 1 and 2 filtering thin film capacitor, it is characterised in that: the material of described housing adopts aluminium alloy.
6. three-phase alternating current according to claim 1 and 2 filtering thin film capacitor, it is characterised in that: the material of described upper cover adopts electronic isolation fluid sealant.
7. three-phase alternating current according to claim 1 and 2 filtering thin film capacitor, it is characterised in that: described capacitance core subgroup includes the first capacitance core subgroup, the second capacitance core subgroup and the 3rd capacitance core subgroup.
8. three-phase alternating current according to claim 7 filtering thin film capacitor, it is characterised in that: described first capacitance core subgroup, described second capacitance core subgroup adopt delta connection to be connected with described 3rd capacitance core subgroup.
9. three-phase alternating current according to claim 7 filtering thin film capacitor, it is characterised in that: between described first capacitance core subgroup, described second capacitance core subgroup and described 3rd capacitance core subgroup, parallel connection is welded on and described internal is connected copper bar.
10. three-phase alternating current according to claim 1 filtering thin film capacitor, it is characterised in that: the quantity of described extraction electrode is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520699814.9U CN205303192U (en) | 2015-09-10 | 2015-09-10 | Three -phase AC filtering film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520699814.9U CN205303192U (en) | 2015-09-10 | 2015-09-10 | Three -phase AC filtering film capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205303192U true CN205303192U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520699814.9U Expired - Fee Related CN205303192U (en) | 2015-09-10 | 2015-09-10 | Three -phase AC filtering film capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205303192U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411232A (en) * | 2018-11-01 | 2019-03-01 | 西安西电电力电容器有限责任公司 | The capacitor of integral type three-phase star-like connection |
-
2015
- 2015-09-10 CN CN201520699814.9U patent/CN205303192U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411232A (en) * | 2018-11-01 | 2019-03-01 | 西安西电电力电容器有限责任公司 | The capacitor of integral type three-phase star-like connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20210910 |