CN111865247A - Multistage capacitor feed-through type power filter - Google Patents
Multistage capacitor feed-through type power filter Download PDFInfo
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- CN111865247A CN111865247A CN202010867796.6A CN202010867796A CN111865247A CN 111865247 A CN111865247 A CN 111865247A CN 202010867796 A CN202010867796 A CN 202010867796A CN 111865247 A CN111865247 A CN 111865247A
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- core
- capacitor
- feed
- screw rod
- power filter
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H1/02—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network of RC networks, e.g. integrated networks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
- H03H2001/0057—Constructional details comprising magnetic material
Abstract
The invention relates to the technical field of filters, and discloses a multistage capacitor feed-through type power filter which comprises a shell, wherein a screw penetrates through the shell, a core-through capacitor is arranged on the outer surface of the screw, one end of the core-through capacitor is fixedly connected with a ground plate, two ends of the core-through capacitor are respectively provided with a wave washer, and the outer surface of the screw is fixedly connected with a flange nut. This multi-stage capacitor feed-through type power filter, through setting up three through-core electric capacity and connecting through the screw rod, fill through iron powder core magnetic ring and insulating washer between the screw rod simultaneously, at total capacitance value, increase the electric capacity under the unchangeable condition of inductance value, the progression of inductance can effectively increase the high frequency filter performance of wave filter, perhaps the feed-through type wave filter of tertiary or more grades of electric capacity can effectively reduce the capacitance value under the condition that high frequency filtering performance does not reduce, thereby be applicable to low leakage current and high frequency electric power waveform application, the wide effect of application scope has been reached.
Description
Technical Field
The invention relates to the technical field of filters, in particular to a multi-stage capacitor feed-through type power filter.
Background
The feed-through type power filter is commonly used on a shielding circuit of a high-power circuit and can effectively suppress high-frequency interference signals, the feed-through type filter on the market only has two stages, so that a high-performance filter has to have a large capacitance value, the large capacitance value is not suitable for low leakage current and high-frequency power waveform application occasions, the application of the feed-through type filter is limited, and therefore the product must be designed by other schemes even without reducing the product performance in the overall design of the application.
Therefore, the applicant proposes a multi-stage capacitor feed-through power filter, in which the capacitors are added under the condition that the total capacitance and inductance are not changed, and the stages of the inductors can effectively increase the performance of the high-frequency filter of the filter (the conclusion can be directly obtained by formula calculation or software simulation), or the feed-through filters with three or more stages of capacitors can effectively reduce the capacitance without reducing the performance of the high-frequency filter, so that the feed-through power filter is suitable for low leakage current and high-frequency power waveform application, and therefore the problem that the conventional filter is not strong in applicability is solved.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a multistage capacitor feed-through type power filter which has the advantages of wide application range and the like and solves the problem of large limitation of the traditional filter in the background technology.
(II) technical scheme
In order to achieve the purpose of wide application range, the invention provides the following technical scheme: a screw rod penetrates through the shell, a core penetrating capacitor is arranged on the outer surface of the screw rod, a ground plate is fixedly connected to one end of the core penetrating capacitor, wave washers are arranged at two ends of the core penetrating capacitor, a flange nut is fixedly connected to the outer surface of the screw rod, an iron powder core magnetic ring is sleeved on the surface of the screw rod, a first insulating washer is sleeved at one end, close to the flange nut, of the iron powder core magnetic ring, a second insulating washer is arranged at one end, close to the core penetrating capacitor, of the ground plate, an elastic check ring for holes is arranged on the outer surface of the ground plate, a third insulating washer is arranged on the other side of the outer surface of the screw rod, and a wire is fixedly connected between the ground plate and the elastic check ring for holes.
Preferably, the number of the feedthrough capacitors is three, and the three feedthrough capacitors are equidistantly distributed on the outer surface of the screw and do not exceed the interior of the shell.
Preferably, the wave washers are respectively located on the left side and the right side of the three core-through capacitors, and the other sides of the wave washers are in lap joint with one sides, close to the core-through capacitors, of the flange nuts.
Preferably, the number of the iron powder core magnetic rings is a plurality, and the iron powder core magnetic rings are filled among the three through-core capacitors.
Preferably, the first insulating washer and the second insulating washer are respectively located at the edges of the flange nut and the core-through capacitor, and the third insulating washer is located between the iron powder core magnetic ring and the flange nut.
Preferably, the number of the wires is several, the wires are respectively positioned in the shell, one end of each wire is connected with the grounding plate, and the other end of each wire is connected with the circlip for the hole.
Compared with the prior art, the invention provides a multistage capacitor feed-through type power filter, which has the following beneficial effects:
1. this multi-stage capacitor feed-through type power filter connects through the screw rod through setting up three through-core electric capacity, fill through iron powder core magnetic ring simultaneously between the screw rod, total capacitance value, increase the electric capacity under the unchangeable condition of inductance value, the progression of inductance can effectively increase the high frequency filter performance of wave filter, or the feed-through type wave filter of tertiary or more grades of electric capacity can effectively reduce the capacitance value under the condition that high frequency filtering performance does not reduce, thereby be applicable to low leakage current and high frequency electric power waveform application, the wide effect of application scope has been reached.
2. According to the multi-stage capacitor feed-through type power filter, the grounding plate is arranged in the grounding plate, and the wires are arranged in the grounding plate to connect the shell, so that the grounding plate can form a grounding function, and the effect of improving the safety of the device is achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a two-stage connection circuit of the present invention;
FIG. 3 is a three-level connection circuit diagram of the present invention.
Wherein: 1. a feedthrough capacitor; 2. a screw; 3. a housing; 4. a ground plate; 5. a wave washer; 6. a flange nut; 7. a magnetic ring with a ferrite core; 8. a first insulating washer; 9. a second insulating washer; 10. a circlip for a hole; 11. a third insulating washer; 12. and (4) conducting wires.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a multi-stage capacitor feed-through power filter includes a housing 3, the housing 3 is used for protecting the whole filter device, a screw rod 2 penetrates through the housing 3, the screw rod 2 is used for connecting a plurality of feedthrough capacitors 1, so that the feedthrough capacitors 1 can be communicated, the outer surface of the screw rod 2 is provided with the feedthrough capacitors 1, the feedthrough capacitors 1 are used for effectively suppressing high-frequency interference signals on the line, the number of the feedthrough capacitors 1 is three, the total capacitance value and the total inductance value of the circuit are consistent by using the formula L1=2 × L2, 2 × C1=3 × C2, so as to effectively reduce the capacitance value without reducing the high-frequency filter performance, the three feedthrough capacitors 1 are equidistantly distributed on the outer surface of the screw rod 2 and do not exceed the interior of the housing 3, one end of the feedthrough capacitor 1 is fixedly connected with a grounding plate 4, the grounding plate 4 is used for grounding the device, so that the safety of the device is effectively improved, the two ends of the through-core capacitor 1 are respectively provided with the wave-shaped gaskets 5, the wave-shaped gaskets 5 are used for improving the firmness of a connection part, the wave-shaped gaskets 5 are respectively positioned on the left side and the right side of the three through-core capacitors 1, the other sides of the wave-shaped gaskets 5 are lapped with one sides, close to the through-core capacitors 1, of the flange nuts 6, the outer surface of the screw rod 2 is fixedly connected with the flange nuts 6, the surface of the screw rod 2 is sleeved with the iron powder core magnetic rings 7, the number of the iron powder core magnetic rings 7 is a plurality, the iron powder core magnetic rings 7 are filled among the three through-core capacitors 1, one ends, close to the flange nuts 6, of the iron powder core magnetic rings 7 are sleeved with the first insulating gaskets 8, the first insulating gaskets 8 and the second insulating gaskets 9 are respectively positioned at the, therefore, the stability of the device is guaranteed, one end, close to the core-through capacitor 1, of the ground plate 4 is provided with a second insulating washer 9, the outer surface of the ground plate 4 is provided with a hole elastic check ring 10, the other side of the outer surface of the screw rod 2 is provided with a third insulating washer 11, the third insulating washer 11 is located between the iron powder core magnetic ring 7 and the flange nut 6, a lead 12 is connected between the ground plate 4 and the hole elastic check ring 10, the number of the leads 12 is two, the two leads 12 are located inside the ground plate 4 respectively, one end of each lead is connected with the ground plate 4, and the other end of each lead is connected.
When the capacitor is used, the two flange nuts 6 fix the core-through capacitor 1 on the screw rod 2, and the core-through capacitor 1 is connected to the screw rod 2 through the wave washer 5 and the flange nuts 6, which is equivalent to wiring; the other end is connected to the shell 3 through the wave washer 5, the grounding plate 4, the elastic retainer ring for hole 10 and the lead 12, which is equivalent to grounding, the whole is electrically connected reliably and is convenient to install, so that the feed-through filter of the three-level capacitor can be industrially produced at low cost, and the insulating washer I8, the insulating washer II 9 and the insulating washer III 11 play roles of filling and fixing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A multi-stage capacitor feed-through power filter comprising a housing (3), characterized in that: a screw rod (2) penetrates through the shell (3), a core-penetrating capacitor (1) is arranged on the outer surface of the screw rod (2), one end of the core-through capacitor (1) is fixedly connected with a grounding plate (4), both ends of the core-through capacitor (1) are provided with wave washers (5), a flange nut (6) is fixedly connected on the outer surface of the screw rod (2), a magnetic ring (7) with a powdered iron core is sleeved on the surface of the screw rod (2), one end of the iron powder core magnetic ring (7) close to the flange nut (6) is sleeved with a first insulating washer (8), one end of the grounding plate (4) close to the core-through capacitor (1) is provided with a second insulating washer (9), an elastic retainer ring (10) for holes is arranged on the outer surface of the grounding plate (4), an insulating washer III (11) is arranged on the other side of the outer surface of the screw rod (2), and a lead (12) is connected between the grounding plate (4) and the circlip (10) for the hole.
2. The multi-stage capacitor feed-through power filter of claim 1, wherein: the number of the core-through capacitors (1) is three, and the three core-through capacitors (1) are equidistantly distributed on the outer surface of the screw rod (2) and do not exceed the inner part of the shell (3).
3. The multi-stage capacitor feed-through power filter of claim 1, wherein: the wave washer (5) is respectively positioned at the left side and the right side of the three core-through capacitors (1), and the other side of the wave washer (5) is lapped with one side, close to the core-through capacitors (1), of the flange nut (6).
4. The multi-stage capacitor feed-through power filter of claim 1, wherein: the number of the iron powder core magnetic rings (7) is a plurality, and the iron powder core magnetic rings (7) are filled among the three core-through capacitors (1).
5. The multi-stage capacitor feed-through power filter of claim 1, wherein: the insulating washer I (8) and the insulating washer II (9) are respectively positioned at the edges of the flange nut (6) and the core penetrating capacitor (1), and the insulating washer III (11) is positioned between the iron powder core magnetic ring (7) and the flange nut (6).
6. The multi-stage capacitor feed-through power filter of claim 1, wherein: the number of the conducting wires (12) is a plurality, the conducting wires (12) are respectively positioned in the shell (3), one end of each conducting wire is connected with the grounding plate (4), and the other end of each conducting wire is connected with the elastic retainer ring (10) for the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010867796.6A CN111865247A (en) | 2020-08-26 | 2020-08-26 | Multistage capacitor feed-through type power filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010867796.6A CN111865247A (en) | 2020-08-26 | 2020-08-26 | Multistage capacitor feed-through type power filter |
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| Publication Number | Publication Date |
|---|---|
| CN111865247A true CN111865247A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010867796.6A Pending CN111865247A (en) | 2020-08-26 | 2020-08-26 | Multistage capacitor feed-through type power filter |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116190969A (en) * | 2023-04-23 | 2023-05-30 | 成都宏科电子科技有限公司 | Feed-through filter and capacitor chip packaging method thereof |
| CN116525292A (en) * | 2023-06-27 | 2023-08-01 | 江苏沃姆克电子科技有限公司 | High-voltage core-penetrating capacitor assembly for high-voltage filter and high-voltage filter |
-
2020
- 2020-08-26 CN CN202010867796.6A patent/CN111865247A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116190969A (en) * | 2023-04-23 | 2023-05-30 | 成都宏科电子科技有限公司 | Feed-through filter and capacitor chip packaging method thereof |
| CN116190969B (en) * | 2023-04-23 | 2023-06-23 | 成都宏科电子科技有限公司 | Feed-through filter and capacitor chip packaging method thereof |
| CN116525292A (en) * | 2023-06-27 | 2023-08-01 | 江苏沃姆克电子科技有限公司 | High-voltage core-penetrating capacitor assembly for high-voltage filter and high-voltage filter |
| CN116525292B (en) * | 2023-06-27 | 2023-09-08 | 江苏沃姆克电子科技有限公司 | High-voltage core-penetrating capacitor assembly for high-voltage filter and high-voltage filter |
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