CN115346796A - Power carrier feed-through capacitor, power information encryptor and information encryption power socket - Google Patents

Power carrier feed-through capacitor, power information encryptor and information encryption power socket Download PDF

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Publication number
CN115346796A
CN115346796A CN202211159588.6A CN202211159588A CN115346796A CN 115346796 A CN115346796 A CN 115346796A CN 202211159588 A CN202211159588 A CN 202211159588A CN 115346796 A CN115346796 A CN 115346796A
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CN
China
Prior art keywords
power
capacitor
shell
coil
common
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Pending
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CN202211159588.6A
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Chinese (zh)
Inventor
莫胜林
莫铠名
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Guilin Chuanglin Electronic Science & Technology Development Co ltd
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Guilin Chuanglin Electronic Science & Technology Development Co ltd
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Priority to CN202211159588.6A priority Critical patent/CN115346796A/en
Publication of CN115346796A publication Critical patent/CN115346796A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/005—Electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/224—Housing; Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H01G4/236—Terminals leading through the housing, i.e. lead-through
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/06—Frequency selective two-port networks including resistors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings

Abstract

The invention discloses a power carrier feed-through capacitor, a power information encryptor and an information encryption power socket, wherein the power carrier feed-through capacitor comprises a feed-through capacitor consisting of an outer end electrode, a capacitor medium and an inner end electrode; the outer end electrode is a hollow cylindrical threaded shell; the inner end electrode is a circular tubular inner shell; the inner shell is axially arranged in the threaded outer shell, and one end side of the inner shell is a signal transmission leading-out end of an inner end electrode; the capacitor medium is filled between the inner shell and the threaded outer shell; the power transmission device further comprises a power transmission conductor, the power transmission conductor is axially arranged in the inner shell, and an insulating isolation material is filled between the power transmission conductor and the inner shell. Compare in ordinary punching electric capacity, this kind of power carrier punching electric capacity more is applicable to the power carrier filter circuit that telecommunications filtering, power transmission erection joint seat unite two into one, simple to operate, labour saving and time saving during production.

Description

Power carrier feed-through capacitor, power information encryptor and information encryption power socket
Technical Field
The invention relates to a feedthrough capacitor, in particular to a feedthrough capacitor for a power carrier, a power information encryptor and a power socket adopting the feedthrough capacitor, and specifically to a power carrier feedthrough capacitor, a power information encryptor and an information encryption power socket.
Background
An existing information privacy power socket resisting Electromagnetic Interference and Electromagnetic leakage is usually provided with an Electromagnetic Interference (EMI) filter, and the low-pass filter can transmit power of a direct current power supply, a 50Hz power supply or a 400Hz power supply to electric equipment without attenuation, so that EMI signals transmitted by the power supply are greatly attenuated, and the electric equipment is protected from being damaged by the Electromagnetic Interference; meanwhile, the EMI signal generated by the electric equipment can be effectively inhibited, and the noise generated in the electric equipment is prevented from being leaked outwards to pollute the electromagnetic environment and harm other equipment. Mains EMI filters are indispensable devices that help electromagnetic equipment and systems meet standards regarding electromagnetic compatibility.
A circuit of a commonly used EMI filter of this type is shown in fig. 4, and the filter includes an anti-electromagnetic interference filter circuit composed of an inductor, a capacitor and a resistor in series/parallel connection, and includes a common mode interference suppression circuit unit and a differential mode interference suppression circuit unit, where Cx is connected between a phase line (L line) and a neutral line (N line), and is called differential mode capacitor; cy is connected between the phase line (L line) or the neutral line (N line) and the ground line (E line) and is called common-mode capacitance; the first coil L1 and the second coil L2 are respectively wound on the annular first ferrite core Z1 to form a first common-mode filter inductor; the third coil L3 and the fourth coil L4 are respectively wound on the annular second ferrite core Z2 to form a second common mode filter inductor; two ends of the first differential mode capacitor Cx1 are respectively connected with the input end of the first coil L1 and the input end of the second coil L2, the input end of the first coil L1 is electrically connected with the L wire, and the input end of the second coil L2 is electrically connected with the N wire; two ends of the third differential mode capacitor Cx3 are respectively connected with the output end of the third coil L3 and the output end of the fourth coil L4, the output end of the third coil L3 is electrically connected with an L 'wire of the power supply output, and the output end of the fourth coil L4 is electrically connected with an N' wire of the power supply output; two ends of a second differential mode capacitor Cx2 are connected with two ends of the resistor R in parallel, one end of the second differential mode capacitor Cx2 is electrically connected with the output end of the first coil L1 and the input end of the third coil L3, and the other end of the second differential mode capacitor Cx2 is electrically connected with the output end of the second coil L2 and the input end of the fourth coil L4; one end of the first common mode capacitor Cy1 is electrically connected with the connection part of the first coil L1 and the third coil L3, and the other end of the first common mode capacitor Cy1 is electrically connected with the E line; one end of the second common mode capacitor Cy2 is electrically connected to a connection of the second coil L2 and the fourth coil L4, and the other end of the second common mode capacitor Cy2 is electrically connected to the E line.
The existing common mode capacitor Cy usually adopts a ceramic chip capacitor, and because the capacitor has small working current and low voltage withstanding value, the following defects exist:
1. if the lightning stroke happens, the high voltage is transmitted to the socket electric equipment through the power supply carrier wire, so that the lightning stroke accident can occur;
2. the capacitance of the ceramic chip can change along with the change of the environmental temperature, and the filtering cut-off rate of the filter can be influenced by the change of the capacitance; the bypass and coupling effects are poor, the direct coupling of high-frequency signals from the input end to the output end cannot be effectively prevented, and interference signals cannot be well inhibited in low-pass transmission signals;
3. when the ceramic chip capacitor works, the current is too small, so that the filtering effect and function are poor, and the safety and confidentiality capabilities are directly weakened;
4. the requirements of filter circuits of various transmission rates of a power line carrier low-voltage distribution network cannot be met;
5. the filter is not suitable for narrow and wide-band filtering of power supply and telecommunication.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a power carrier feedthrough capacitor, a power information encryptor and an information encryption power socket so as to overcome the defects of small working current and low voltage resistance of a common-mode capacitor Cy ceramic chip capacitor in a power EMI filter circuit in the prior art and the defects brought to a power information encryption device and a corresponding information encryption power socket.
The technical scheme for realizing the purpose of the invention is as follows:
a power carrier feedthrough capacitor comprises a feedthrough capacitor consisting of an outer end electrode, a capacitor medium and an inner end electrode;
the outer end electrode is a hollow cylindrical threaded shell; the inner end electrode is a circular tubular inner shell;
the inner shell is axially arranged in the threaded outer shell, and one end side of the inner shell is a signal transmission leading-out end of an inner end electrode; the capacitor medium is filled between the inner shell and the threaded outer shell;
also comprises
The power transmission conductor is axially arranged in the inner shell, and an insulating isolation material is filled between the power transmission conductor and the inner shell.
Further, a polygonal nut is included, and the polygonal nut is in threaded connection with the threaded shell.
Preferably, the polygonal nut is a hexagonal nut.
The power carrier feedthrough capacitor has the advantages that: compare in ordinary punching electric capacity, this kind of power carrier punching electric capacity more is applicable to the power carrier filter circuit that telecommunications filtering, power transmission erection joint seat unite two into one, simple to operate, labour saving and time saving during production.
A kind of power information secrecy device, including Electromagnetic shielding shell and Electromagnetic Interference (EMI for short) electric magnetic Interference filter, the said Electromagnetic Interference electric magnetic Interference filter is set up in the Electromagnetic shielding shell; the electromagnetic interference filter comprises an anti-electromagnetic interference filter circuit formed by combining an inductor, a capacitor and a resistor in series/parallel connection, a common-mode interference suppression circuit unit, a differential-mode interference suppression circuit unit and the power carrier feedthrough capacitor, wherein the first common-mode capacitor Cy1 and the second common-mode capacitor Cy2 of the common-mode interference suppression circuit unit both adopt the power carrier feedthrough capacitor.
The first common-mode capacitor Cy1 and the second common-mode capacitor Cy2 are arranged at one side end of the electromagnetic shielding shell; the threaded shell of the first common-mode capacitor Cy1 is in threaded connection with the shell of the electromagnetic shielding shell, namely the first threaded shell of the first common-mode capacitor Cy1 is used as an outer end electrode of the power carrier feedthrough capacitor and is connected with a ground wire E through the shell, and a power transmission conductor of the first common-mode capacitor Cy1 is an L-wire soldering lug; the threaded shell of the second common-mode capacitor Cy2 is in threaded connection with the shell of the electromagnetic shielding shell, namely the second threaded shell of the second common-mode capacitor Cy2 is used as an outer end electrode of a power carrier feedthrough capacitor and is connected with a ground wire E through the shell, and a power transmission conductor of the second common-mode capacitor Cy2 is an N-wire soldering lug;
the other side end of the electromagnetic shielding shell is provided with two power supply output end connecting seats, namely a first power supply output end connecting seat and a second power supply output end connecting seat;
the first coil L1 and the second coil L2 are respectively wound on the annular first ferrite core Z1 to form a first common-mode filter inductor; the third coil L3 and the fourth coil L4 are respectively wound on the annular second ferrite core Z2 to form a second common mode filter inductor;
two ends of the first differential mode capacitor Cx1 are respectively connected with the input end of the first coil L1 and the input end of the second coil L2, the input end of the first coil L1 is electrically connected with the L wire welding piece, and the input end of the second coil L2 is electrically connected with the N wire welding piece;
the two ends of the third differential mode capacitor Cx3 are respectively connected with the output end of the third coil L3 and the output end of the fourth coil L4, the output end of the third coil L3 is electrically connected with the L 'wire welding piece of the first power output end connecting seat, and the output end of the fourth coil L4 is electrically connected with the N' wire welding piece of the second power output connecting seat;
two ends of a second differential mode capacitor Cx2 are connected with two ends of the resistor R in parallel, one end of the second differential mode capacitor Cx2 is electrically connected with the output end of the first coil L1 and the input end of the third coil L3, and the other end of the second differential mode capacitor Cx2 is electrically connected with the output end of the second coil L2 and the input end of the fourth coil L4;
the inner end electrode of the first common mode capacitor Cy1 is electrically connected to the connection between the first coil L1 and the third coil L3; the inner end electrode of the second common-mode capacitor Cy2 is electrically connected to the junction of the second coil L2 and the fourth coil L4;
the outer wall of the electromagnetic shielding shell is provided with a grounding connecting sheet;
the electromagnetic interference filter is sealed in the electromagnetic shielding shell by filling epoxy resin.
Further, the first common-mode filter inductor and the second common-mode filter inductor are arranged in the electromagnetic shielding shell along the direction from the power supply incoming line to the power supply output; the first differential-mode capacitance Cx1 is arranged at the lower end part of the first common-mode filter inductor; the third differential-mode capacitance Cx3 is arranged at the lower end part of the second common-mode filter inductor; and the second differential mode capacitor Cx2 and the resistor R which are connected in parallel are vertically arranged between the first common mode filter inductor and the second common mode filter inductor, and two side surfaces of the second differential mode capacitor Cx2 are respectively abutted with the outer side surfaces of the first ferrite magnetic core Z1 and the second ferrite magnetic core Z2.
The power supply information encryptor adopting the power carrier feedthrough capacitor has the advantages or effects that:
1. the socket can prevent high voltage from transmitting to electric equipment on the socket through a power supply carrier line when in use, and thus, the socket plays a role in lightning protection;
2. compared with other types of capacitors in the circuit in the prior art, the influence of the ambient temperature on the capacity change of the feedthrough capacitor is smaller, and the filtering cut-off rate of the filter is prevented from being influenced by the capacity change; the inductance generated by the feedthrough capacitor is the minimum, the feedthrough capacitor belongs to the function of a pure capacitor filter, the bypass and coupling effects are good, high-frequency signals can be effectively prevented from being directly coupled to the output end from the input end, and interference signals can be well inhibited in the transmission signals of the low-pass EMI filter;
3. compared with other types of capacitors in a filter circuit in the prior art, the high-voltage power filter can flow large current of dozens of amperes, so that the filtering effect and function are improved and amplified, the security and confidentiality of office environment and a circuit information system are effectively improved, and the security leakage caused by electromagnetic radiation and power carrier waves is effectively prevented;
4. the filter circuit requirements of various transmission rates of the power line carrier low-voltage distribution network can be met;
5. the method is suitable for the application of a new narrow and broadband power carrier technology which combines a power supply and telecommunications into a whole;
6. the power carrier feed-through capacitor also has the advantages of convenience in installation, time saving and labor saving.
An information security power socket comprises a power plug and a patch board, wherein the patch board is provided with the power socket and also comprises the power information security device, the power information security device is connected in series between a connecting wire of the power plug and the power socket on the patch board, an L wire of the connecting wire of the power plug is electrically connected with an L wire welding sheet of a first common-mode capacitor Cy1, and an N wire of the connecting wire of the power plug is electrically connected with an N wire welding sheet of a second common-mode capacitor Cy 2; the L 'wire of the power socket on the wiring board is electrically connected with the L' wire welding sheet of the first power output end connecting seat, and the N 'wire of the power socket on the wiring board is electrically connected with the N' wire welding sheet of the second power output end connecting seat; the E line of the power plug connecting line and the E line of the power socket are electrically connected with the grounding connecting sheet on the outer wall of the electromagnetic shielding shell.
Furthermore, the metal plug connector in the power socket is a surface contact type plug connector and/or a clamping type plug connector.
The information security power socket has the advantages or effects that:
a novel electromagnetic interference (EMI) related technology is formed, the protection effect of an EMI signal is enhanced, better electromagnetic compatibility is achieved, the influence on human body radiation is reduced, and the interference resistance is stronger; the power carrier feed-through capacitor also has the advantages of convenience in installation, time saving and labor saving.
Drawings
Fig. 1 is a schematic structural diagram of a power carrier feedthrough capacitor of embodiment 1;
fig. 2 is a schematic structural diagram of the power carrier feedthrough capacitor of embodiment 1;
fig. 3 is a schematic cross-sectional structure diagram of the power carrier feedthrough capacitor of embodiment 1;
FIG. 4 is a schematic diagram of an EMI filter circuit;
FIG. 5 is a schematic structural connection diagram of the power information security device of embodiment 2 with the end cap of the electromagnetic shielding case opened;
FIG. 6 is a schematic view showing the structural connection of an information security electric outlet using the present power information security device in example 3.
In the figure, 1, a threaded outer shell 2, a capacitance medium 3, an inner shell 4, a power transmission conductor 5, an insulating isolation material 6, a nut 7, an electromagnetic shielding shell 7-1, a shell 8, a first threaded outer shell 9, a first power transmission conductor 10, a second threaded outer shell 11, a second power transmission conductor 12, a first power output connecting seat 13, a second power output connecting seat 14, a first inner end electrode 15, a second inner end electrode 16, a grounding connecting plate 17, a power plug 18, a patch board 19 and a power socket are shown.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings, in which the described examples are intended to illustrate only some, but not all, embodiments of the present invention. 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.
Example 1:
as shown in fig. 1 to fig. 3, a power carrier feedthrough capacitor includes a feedthrough capacitor composed of an outer end electrode, a capacitor medium 2 and an inner end electrode;
the outer end electrode is a hollow cylindrical threaded shell 1; the inner end electrode is a circular tubular inner shell 3;
the inner shell 3 is axially arranged in the threaded outer shell 1, and one end side of the inner shell 3 is a signal transmission leading-out end of an inner end electrode; the capacitance medium 2 is filled between the inner shell 3 and the threaded outer shell 1;
also comprises
A power transmission conductor 4, the power transmission conductor 4 being axially disposed in the inner housing 3, an insulating isolation material 5 being filled between the power transmission conductor 4 and the inner housing 3.
The capacitor medium 2 is made of ceramic; the insulating isolation material 5 is made of epoxy resin.
Comprises a polygonal nut 6, wherein the polygonal nut 6 is in threaded connection with the threaded shell 1. The polygonal nut 6 in this example is a hexagonal nut.
Example 2:
as shown in fig. 4 and 5, a power information security device includes an Electromagnetic shielding case 7 and an Electromagnetic Interference (EMI) filter, which is disposed inside the Electromagnetic shielding case 7; the electromagnetic interference filter comprises an anti-electromagnetic interference filter circuit formed by combining an inductor, a capacitor and a resistor in series/parallel connection, a common-mode interference suppression circuit unit, a differential-mode interference suppression circuit unit and a power carrier feedthrough capacitor of the embodiment 1, wherein the power carrier feedthrough capacitor is adopted by a first common-mode capacitor Cy1 and a second common-mode capacitor Cy2 of the common-mode interference suppression circuit unit. The capacity of the power carrier feedthrough capacitor is 3300-4700pF.
The first common-mode capacitor Cy1 and the second common-mode capacitor Cy2 are both arranged at one side end of the electromagnetic shielding shell 7; a first threaded shell 8 of the first common-mode capacitor Cy1 is in threaded connection with a shell 7-1 of the electromagnetic shielding shell 7 and is fixed through a nut, and a first power transmission conductor 9 of the first common-mode capacitor Cy1 is an L-shaped wire welding sheet; a second threaded shell 10 of a second common-mode capacitor Cy2 is in threaded connection with the shell 7-1 of the electromagnetic shielding shell 7 and is fixed through a nut, and a second power transmission conductor 11 of the second common-mode capacitor Cy2 is an N-wire welding sheet; a first threaded shell 8 of the first common-mode capacitor Cy1 is used as an outer end electrode of the power carrier feedthrough capacitor and is connected with a ground wire E through a shell 7-1; a second threaded shell 10 of a second common-mode capacitor Cy2 is used as an outer end electrode of the power carrier feedthrough capacitor and is connected with a ground wire E through a shell 7-1;
the other side end of the electromagnetic shielding shell 7 is provided with two power output end connecting seats, namely a first power output end connecting seat 12 and a second power output connecting seat 13;
the first coil L1 and the second coil L2 are respectively wound on the annular first ferrite core Z1 for 10 circles to form a first common-mode filter inductor; the third coil L3 and the fourth coil L4 are respectively wound on the second ferrite core Z2 in the annular shape for 10 circles to form a second common mode filter inductor;
the two ends of the first differential mode capacitor Cx1 are respectively connected with the input end of the first coil L1 and the input end of the second coil L2, the input end of the first coil L1 is welded with an L-wire welding sheet in the shell 7-1, namely the input end of the first coil L1 is welded with the first power transmission conductor 9; the input end of the second coil L2 is welded to an N-wire bonding pad in the case 7-1, that is, the input end of the second coil L2 is welded to the second power transmission conductor 11; the first differential mode capacitance Cx1 has a capacitance of 0.1 μ F;
the two ends of the third differential mode capacitor Cx3 are respectively connected with the output end of the third coil L3 and the output end of the fourth coil L4, the output end of the third coil L3 is welded with an L 'wire welding piece of the first power output connecting seat 12, and the output end of the fourth coil L4 is welded with an N' wire welding piece of the second power output connecting seat 13; the capacity of the third differential mode capacitor Cx3 is 0.1 muF;
two ends of the second differential mode capacitor Cx2 are connected with two ends of the resistor R in parallel, and one end of the second differential mode capacitor Cx2 is welded with the output end of the first coil L1 and the input end of the third coil L3; the other end of the second differential mode capacitor Cx2 is welded with the output end of the second coil L2 and the input end of the fourth coil L4; the capacity of the second differential mode capacitance Cx2 is 0.1 muF; the resistance value of the resistor R is 1.0M omega;
a first inner end electrode 14 of the first common-mode capacitor Cy1 is welded with the joint of the first coil L1 and the third coil L3, the first inner end electrode 14 is an inner shell of the power carrier feedthrough capacitor, and a signal transmission leading-out end of the inner end electrode of the inner shell is welded with the joint of the first coil L1 and the third coil L3; a second inner end electrode 15 of the second common-mode capacitor Cy2 is welded with the joint of the second coil L2 and the fourth coil L4, the second inner end electrode 15 is an inner shell of a power carrier feed-through capacitor, and a signal transmission leading-out end of the inner end electrode of the inner shell is welded with the joint of the second coil L2 and the fourth coil L4;
the outer wall of the electromagnetic shielding shell 7 is welded with a grounding connecting sheet 16 so as to facilitate the welding of an external grounding wire;
the electromagnetic interference filter is sealed in the electromagnetic shielding shell 7-1 by filling epoxy resin.
The first common mode filter inductor and the second common mode filter inductor are arranged in the electromagnetic shielding shell 7-1 along the direction from the power supply incoming line to the power supply output; the first differential-mode capacitance Cx1 is arranged at the lower end part of the first common-mode filter inductor; the third differential-mode capacitance Cx3 is arranged at the lower end part of the second common-mode filter inductor; and the second differential mode capacitor Cx2 and the resistor R which are connected in parallel are vertically arranged between the first common mode filter inductor and the second common mode filter inductor, and two side surfaces of the second differential mode capacitor Cx2 are respectively abutted with the outer side surfaces of the first ferrite magnetic core Z1 and the second ferrite magnetic core Z2, so that the electromagnetic interference between the components is reduced.
The electromagnetic shielding shell 7 is made of metal zinc.
The electromagnetic shielding shell 7 comprises a shell 7-1 and an end cover, the end cover is connected with the shell 7-1 into a whole through clamping or welding, and the electromagnetic interference filter filled with epoxy resin is sealed in the electromagnetic shielding shell 7.
The two power carrier feedthrough capacitors are arranged at the power supply inlet end, or the power carrier feedthrough capacitor can be arranged at the power supply outlet end to replace two power supply output end connecting seats, so that the using effect is the same, and the power carrier feedthrough capacitor is mainly selected to be arranged at which end by taking production and installation convenience as the standard.
Example 3:
as shown in fig. 6, an information security power socket includes a power plug 17 and a patch board 18, the patch board 18 is provided with a power socket 19, and further includes a power information security device of embodiment 2, the power information security device of embodiment 2 is connected in series between a connection line of the power plug 17 and the power socket 19 on the patch board 18, an L line of the connection line of the power plug 17 is welded to an L line pad of a first common mode capacitor Cy1, that is, the L line of the connection line of the power plug 17 is welded to a first power transmission conductor 9; the N line of the connecting line of the power plug 17 is welded to the N line pad of the second common mode capacitor Cy2, that is, the N line of the connecting line of the power plug 17 is welded to the second power transmission conductor 11; the L 'wire of the power socket 19 on the wiring board 18 is welded with the L' wire welding sheet of the first power output end connecting seat 12, and the N 'wire of the power socket 19 on the wiring board 18 is welded with the N' wire welding sheet of the second power output end connecting seat 13; the line E of the power plug 17 and the line E of the power socket 19 are welded with the grounding connecting sheet 16 on the outer wall of the electromagnetic shielding shell 7.
The metal plug-in connector in the power socket is a surface contact plug-in connector and/or a clamping lock type plug-in connector.
The surface contact type strong-current plug connector can adopt a surface contact type strong-current plug connector with an authorized notice number of CN210074231U, and the locking type plug connector can adopt a locking type plug connector with an authorized notice number of CN204315862U and/or CN 206379516U.
The plug connector adopts a 360-degree columnar wrapping surface contact automatic clamping and fastening joint structure to replace a traditional splayed two-clamping piece copper sheet structure, is not easy to deform, does not strike fire, is firmly connected, and overcomes the defects and disadvantages of small connecting contact area, poor contact, serious fire striking, easy equipment damage and fire accidents of the prior art.
The socket contact plug-in connector increases the contact area of the socket and the plug when the socket works, is firm in connection, reduces the total contact resistance, sharply reduces and eliminates the heat productivity of the socket and the plug, and greatly increases the working reliability, thereby effectively preventing the socket and the plug from being burnt out, electric equipment from being damaged and fire from happening; and greatly prolongs the service life of the socket product.
Compared with the prior art, the socket is more ingenious in design, less in material consumption, not increased in process cost, different from an existing socket production mold, material-saving and long in service life.
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 (7)

1. A power carrier feedthrough capacitor is characterized by comprising a feedthrough capacitor consisting of an outer end electrode, a capacitor medium and an inner end electrode;
the outer end electrode is a hollow cylindrical threaded shell; the inner end electrode is a circular tubular inner shell;
the inner shell is axially arranged in the threaded outer shell, and one end side of the inner shell is a signal transmission leading-out end of an inner end electrode; the capacitor medium is filled between the inner shell and the threaded outer shell;
also comprises
The power transmission conductor is axially arranged in the inner shell, and an insulating isolation material is filled between the power transmission conductor and the inner shell.
2. The power carrier feedthrough capacitor of claim 1, comprising a polygonal nut threadably engaged with the threaded housing.
3. A kind of power information secrecy device, including Electromagnetic shielding shell and Electromagnetic Interference (EMI for short) electric magnetic Interference filter, the said Electromagnetic Interference electric magnetic Interference filter is set up in the Electromagnetic shielding shell; the electromagnetic interference filter comprises an anti-electromagnetic interference filter circuit formed by combining an inductor, a capacitor and a resistor in series/parallel connection, and comprises a common-mode interference suppression circuit unit and a differential-mode interference suppression circuit unit, and is characterized by comprising the power carrier feedthrough capacitor as claimed in any one of claims 1-2, wherein the power carrier feedthrough capacitor is adopted by a first common-mode capacitor Cy1 and a second common-mode capacitor Cy2 of the common-mode interference suppression circuit unit.
4. A power information secrecy according to claim 3 wherein the first and second common-mode capacitors Cy1 and Cy2 are disposed at one side end of the electromagnetic shielding case; the threaded shell of the first common-mode capacitor Cy1 is in threaded connection with the shell of the electromagnetic shielding shell, namely the first threaded shell of the first common-mode capacitor Cy1 is used as an outer end electrode of the power carrier feedthrough capacitor and is connected with a ground wire E through the shell, and a power transmission conductor of the first common-mode capacitor Cy1 is an L-wire soldering lug; the threaded shell of the second common-mode capacitor Cy2 is in threaded connection with the shell of the electromagnetic shielding shell, namely the second threaded shell of the second common-mode capacitor Cy2 is used as an outer end electrode of a power carrier feedthrough capacitor and is connected with a ground wire E through the shell, and a power transmission conductor of the second common-mode capacitor Cy2 is an N-wire soldering lug;
the other side end of the electromagnetic shielding shell is provided with two power supply output end connecting seats, namely a first power supply output end connecting seat and a second power supply output end connecting seat;
the first coil L1 and the second coil L2 are respectively wound on the annular first ferrite core Z1 to form a first common-mode filter inductor; the third coil L3 and the fourth coil L4 are respectively wound on the annular second ferrite core Z2 to form a second common mode filter inductor;
two ends of the first differential mode capacitor Cx1 are respectively connected with the input end of the first coil L1 and the input end of the second coil L2, the input end of the first coil L1 is electrically connected with the L wire bonding sheet, and the input end of the second coil L2 is electrically connected with the N wire bonding sheet;
the two ends of the third differential mode capacitor Cx3 are respectively connected with the output end of the third coil L3 and the output end of the fourth coil L4, the output end of the third coil L3 is electrically connected with the L 'wire welding piece of the first power output end connecting seat, and the output end of the fourth coil L4 is electrically connected with the N' wire welding piece of the second power output connecting seat;
two ends of a second differential mode capacitor Cx2 are connected with two ends of the resistor R in parallel, one end of the second differential mode capacitor Cx2 is electrically connected with the output end of the first coil L1 and the input end of the third coil L3, and the other end of the second differential mode capacitor Cx2 is electrically connected with the output end of the second coil L2 and the input end of the fourth coil L4;
the inner end electrode of the first common mode capacitor Cy1 is electrically connected to the connection between the first coil L1 and the third coil L3; the inner end electrode of the second common-mode capacitor Cy2 is electrically connected with the connection part of the second coil L2 and the fourth coil L4;
the outer wall of the electromagnetic shielding shell is provided with a grounding connecting sheet;
the electromagnetic interference filter is filled and sealed in the electromagnetic shielding shell by adopting epoxy resin;
or the power carrier feed-through capacitor is arranged at the power supply outlet end to replace two power supply output end connecting seats.
5. The power information privacy device of claim 3, wherein the first and second common mode filter inductors are arranged in a direction from a power supply incoming line to a power supply output within the electromagnetic shielding case; the first differential-mode capacitance Cx1 is arranged at the lower end part of the first common-mode filter inductor; the third differential-mode capacitance Cx3 is arranged at the lower end part of the second common-mode filter inductor; and the second differential mode capacitor Cx2 and the resistor R which are connected in parallel are vertically arranged between the first common mode filter inductor and the second common mode filter inductor, and two side surfaces of the second differential mode capacitor Cx2 are respectively abutted with the outer side surfaces of the first ferrite magnetic core Z1 and the second ferrite magnetic core Z2.
6. An information security power socket, which comprises a power plug and a patch board, wherein the patch board is provided with the power socket, and is characterized by comprising the power information security device of any one of claims 3-5, the power information security device is connected in series between a connecting line of the power plug and the power socket on the patch board, an L line of the connecting line of the power plug is electrically connected with an L line welding sheet of a first common-mode capacitor Cy1, and an N line of the connecting line of the power plug is electrically connected with an N line welding sheet of a second common-mode capacitor Cy 2; the L 'wire of the power socket on the wiring board is electrically connected with the L' wire welding sheet of the first power output end connecting seat, and the N 'wire of the power socket on the wiring board is electrically connected with the N' wire welding sheet of the second power output end connecting seat; the E line of the power plug connecting line and the E line of the power socket are electrically connected with the grounding connecting sheet on the outer wall of the electromagnetic shielding shell.
7. An information security power socket as claimed in claim 6, wherein the metal plug connectors in the power socket are face contact plug connectors and/or snap-lock plug connectors.
CN202211159588.6A 2022-09-22 2022-09-22 Power carrier feed-through capacitor, power information encryptor and information encryption power socket Pending CN115346796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211159588.6A CN115346796A (en) 2022-09-22 2022-09-22 Power carrier feed-through capacitor, power information encryptor and information encryption power socket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211159588.6A CN115346796A (en) 2022-09-22 2022-09-22 Power carrier feed-through capacitor, power information encryptor and information encryption power socket

Publications (1)

Publication Number Publication Date
CN115346796A true CN115346796A (en) 2022-11-15

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Application Number Title Priority Date Filing Date
CN202211159588.6A Pending CN115346796A (en) 2022-09-22 2022-09-22 Power carrier feed-through capacitor, power information encryptor and information encryption power socket

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