CN206023572U - A kind of new filtering unit - Google Patents
A kind of new filtering unit Download PDFInfo
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- CN206023572U CN206023572U CN201620916041.XU CN201620916041U CN206023572U CN 206023572 U CN206023572 U CN 206023572U CN 201620916041 U CN201620916041 U CN 201620916041U CN 206023572 U CN206023572 U CN 206023572U
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- supply filter
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- Emergency Protection Circuit Devices (AREA)
Abstract
This utility model provides a kind of new filtering unit, and comprising shield shell and power-supply filter, shield shell includes base and upper lid；The circular cylindrical cavity structure that the profile of upper lid is opened in one side, is insertion end in one end of open sides, the external diameter of the external diameter of insertion end less than circular cylindrical cavity structure；The rounded pie structure of the profile of the base, base are wherein simultaneously provided with the circular groove that a circle is mated with insertion end size, some mounting grooves of the rounded distribution in the edge of base another side；Mounting groove takes the shape of the letter U, and the vertical section end of U-shaped open sides is communicated with the outer rim of base；By the outside of circular groove, include the installing hole through base in the region of each U-shaped mounting groove；Described power-supply filter includes the lightning-protection module for being used for the big voltage that connection end instantaneously occurs to be shorted to earial drainage ground terminal, and power-supply filter is integrally covered by heat conductive insulating casting glue.The utility model has the advantages that：It is suitable to outdoor utility and is easy to detect lightning protection component effectiveness.
Description
Technical field
This utility model is related to field of electromagnetic compatibility, and in particular to a kind of new filtering unit for being applied to power filter.
Background technology
Power-supply filter is to be connected between power supply and electrical equipment the device for being used for filtering clutter, existing power filter
Device is used for indoor environment, the function of not possessing outdoor utility；Outer except being not easy to installing and using for outdoor, as needs are in rain
Snow thunder and lightning environment is used, and must also be had lightning protection and waterproof measure, and be ensured good ground connection performance and filter effect；Lightning-protection module with
The performance of itself that affects of the increase or thunderbolt intensity of effective protection number of times can occur unfavorable change, even lose guarantor
Shield is acted on, and the element validity comparison of detection lightning protection part is numb for the filtering unit of shielding and encapsulation process has been carried out
It is tired of, and traditional lightning protection measures is difficult to discover whether to produce effective lightning strike protection action, in order to solve these problems, having must
Design a kind of new filtering unit.
Utility model content
Deficiency in the presence of for prior art, this utility model are suitable to outdoor utility there is provided one kind and are easy to detect
The filtering unit of lightning protection component effectiveness.
For achieving the above object, this utility model employs following technical scheme：
A kind of new filtering unit, comprising shield shell and power-supply filter, power-supply filter is placed in shield shell,
The input connector being connected corresponding with the input of power-supply filter, outfan and out connector are installed on shield shell；
Described shield shell includes base and upper lid；The circular cylindrical cavity structure that the profile of the upper lid is opened in one side, is opening
One end of side is insertion end, the external diameter of the external diameter of insertion end less than circular cylindrical cavity structure；The rounded cake of the profile of the base
Shape structure, base are wherein simultaneously provided with the circular groove that a circle is mated with insertion end size, and the edge of base another side is in circle
Shape is distributed some mounting grooves；Mounting groove takes the shape of the letter U, and the vertical section end of U-shaped open sides is communicated with the outer rim of base；Insertion end is inserted
Enter circular groove and be fixedly connected, and conductive rubber strip is connected between circular groove and insertion end；By the outer of circular groove
Side, includes the installing hole through base in the region of each U-shaped mounting groove；Described power-supply filter is comprising for by even
The lightning-protection module that the instantaneous big voltage for occurring in end is shorted to earial drainage ground terminal is connect, and power-supply filter is overall by heat conductive insulating casting glue
Cover.
Further, also include the detector unit for being used for detecting whether lightning-protection module element is in normal condition.
Further, also comprising the warning knot for being used for displaying whether to meet with that thunderbolt was acted on or carried out effective lightning strike protection
Structure.
Preferably, the input and outfan of power-supply filter is respectively comprising positive pole and negative pole；From the defeated of power-supply filter
The output head anode direction for entering proper best power-supply filter has been sequentially connected in series common mode inductance L1A and common mode inductance L2A；From power supply
The negative pole of output end direction of the input cathode of wave filter to power-supply filter has been sequentially connected in series common mode inductance L1B and common mode inductance
L2B；It is all connected between the positive pole and negative pole of power-supply filter input, between the positive pole of power-supply filter outfan and negative pole
There is lightning-protection module；Differential mode capacitor C1 is connected between the input of common mode inductance L1A and common mode inductance L1B；Common mode inductance L1A and
Differential mode capacitor C2 is connected between the outfan of common mode inductance L1B；Between the outfan of common mode inductance L2A and common mode inductance L2B
It is connected with differential mode capacitor C7；Common mode capacitance C3 distinguishes the company of series connection two-by-two with common mode capacitance C4, common mode capacitance C5 with common mode capacitance C6
Connect, and the connection end being connected in series is connected with ground, common mode capacitance C3 of series connection and common mode capacitance C4 are overall with differential mode capacitor C2
Parallel connection, common mode capacitance C5 of series connection are overall with common mode capacitance C6 in parallel with differential mode capacitor C7.
Further, described lightning-protection module includes discharge tube and some varistors；Wherein one end of each varistor
Corresponding with the negative or positive electrode of the input of power-supply filter, outfan respectively be connected, the other end of varistor and after connecing
Discharged in series pipe is to earial drainage ground terminal；Earial drainage ground terminal can be with the thicker pad for covering copper, be fixed by screws in the mode of stud
Or the mode of cable welding and shielding cage connection.
Further, described detector unit comprising power module, double-limit comparator, buzzer module and DPDT after
Electrical equipment；One end of dpdt relay triggering pin is connected with the anode of diode D1, and the negative electrode of diode D1 is connected to be let out
Stream ground terminal；The other end of dpdt relay triggering pin and input connector or one of redundant side of out connector
Son is connected, and is connected with the hot side input of power module；Two normally opened movable contact ends of dpdt relay respectively with
The connection end of varistor and discharge tube, earial drainage ground terminal are connected, two stationary contact end input respectively with double-limit comparator,
The low potential side input of power module is corresponding to be connected；Power module is also comprising high reference voltage outfan and low reference voltage output
End, its high threshold voltage input and low threshold voltage input for corresponding respectively to double-limit comparator are connected；Double-limit comparator
Output be connected with the input of buzzer module.
Preferably, the caution structure includes the ground pipe being fixedly connected with upper lid, and the surface spraying of ground pipe has
Irreversible temperature indicating paint coating, its temperature-measuring range is between 75 DEG C～220 DEG C.
This filtering unit improves filtering by insertion end with the cooperation of circular groove and the gap filling of conductive rubber strip
The overall shielding propertiess of component, simultaneously because reducing the contact resistance between lid and base, also further ensure good
Ground connection performance；The U-shaped mounting groove and installing hole of rounded distribution is installed filtering unit for multi-angle and is provided conveniently, is suitable to outdoor
The different installation environments being likely encountered；The lightning-protection module solution that the heat conductive insulating casting glue that power-supply filter is passed through is covered and included
Filtering unit in the wild under the conditions of lightning protection waterproof demand；When needing the element for detecting lightning-protection module whether effective, pull out
Go out to dock input and the out connector of filtering unit equipment, power-supply filter is input into using metal ferrule or banjo or
One of out connector triggers the redundant terminals short circuit of pin with dpdt relay is connected to；External power source positive pole is connected
Connecting line in the middle of metal ferrule or banjo, external power source negative pole are connected with earial drainage ground terminal；Now DPDT relay
The triggering end of device produces voltage and goes forward side by side to take action to be made, and the partial pressure pressure drop between varistor and discharge tube passes through dpdt relay
Switch be connected to the input of double-limit comparator, and compare with the reference voltage of power module output；When varistor or put
When fulgurite resistance is normal, buzzer module ring, when varistor or discharge tube resistance exception, is transferred to double-limit comparator input
The magnitude of voltage at end not power module output height reference voltage range between when, then buzzer module is not rung, so as to represent
The abnormal state of lightning-protection module；In addition, when thunder and lightning is drained into the earth by ground pipe, the heat that high current is produced is caused
Ground pipe temperature is raised, when temperature rises to the temperature-measuring range of irreversible temperature indicating paint coating, then irreversible temperature indicating paint
There is color change in coating such that it is able to recognise that and met with thunderbolt or carried out effective lightning protection.
Compared to existing technology, the beneficial effects of the utility model are：
(1), simple structure, compact are easy to carry and install, and possess lightning protection waterproof effect, are suitable to outdoor application；
(2), possess the function of lightning-protection module validation checking, and need to only utilize the end of input connector or out connector
Son can complete to detect, very convenient.
(3), possess the display function of lightning strike protection, be easy to the inspection and maintenance of lightning protection component.
Description of the drawings
Structural representation front views of the Fig. 1 for embodiment.
Structural representation upward views of the Fig. 2 for embodiment.
Understructure top views of the Fig. 3 for embodiment.
Schematic diagrams of the Fig. 4 for power-supply filter.
Fig. 5 is the connection logic diagram of embodiment lightning-protection module and detector unit.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment to this utility model in technical scheme further illustrate.
A kind of new filtering unit, comprising shield shell and power-supply filter, power-supply filter is placed in shield shell, such as
Shown in Fig. 1 and Fig. 2, the input connection being connected corresponding with the input of power-supply filter, outfan is installed on shield shell
Device 1 and out connector 2；Described shield shell includes base 3 and upper lid 4；The circle that the profile of the upper lid 2 is opened in one side
Cylindrical chamber structure, is insertion end 5 in one end of open sides, the external diameter of the external diameter of insertion end 5 less than circular cylindrical cavity structure；Institute
State the rounded pie structure of profile of base 3, as shown in figure 3, base 3 is wherein simultaneously provided with a circle and 5 size of insertion end
The circular groove 6 that matches somebody with somebody, the edge of 3 another side of base is rounded to be distributed some mounting grooves 7；Mounting groove 7 takes the shape of the letter U, and U-shaped open sides
Vertical section end communicate with the outer rim of base 3；The insertion circular groove 6 of insertion end 5 is simultaneously fixedly connected, and specific fixed form can
Affixed by screw or screw thread that arrange coupling in insertion end and circular groove inwall is spun；Insertion end 5 and circular groove 6
Between be connected with conductive rubber strip, lid 4 and base is fully contacted so as to improve shielding propertiess, while
Reduce contact resistance, on the other hand, it is to avoid rainwater invades inside of shield casings by gap；By the outside of circular groove 6, in each
Include the installing hole 8 through base in the region of U-shaped mounting groove, installing hole 8 can be screwed hole, annular be connect using screw rod
Line terminals are fixed in U-shaped mounting groove 7, the U-shaped side wall of mounting groove 7 can pair of wire connection terminals carry out spacing；Shield shell also includes
For displaying whether to meet with thunderbolt effect or carrying out the caution structure of effective lightning strike protection, as shown in figure 1, the warning knot
Structure includes the ground pipe 9 being fixedly connected with upper lid, and thunder-strike current is imported to the earth by connection cables, connect by ground pipe 9
The surface spraying of ground conduit 9 has irreversible temperature indicating paint coating, its temperature-measuring range between 75 DEG C～220 DEG C, as preferred side
Case, can select polychrome irreversible temperature indicating paint so that temperature represents more accurate.
Described power-supply filter includes lightning-protection module and detector unit, and lightning-protection module is used for instantaneous for connection end appearance
Big voltage is shorted to earial drainage ground terminal, and earial drainage ground terminal can be with the thicker pad for covering copper, have hole with solid by screw in the middle of pad
Fixed mode and shielding cage connection；Whether detector unit is used for detecting lightning-protection module element in normal condition；Power filter
Device is integrally covered by heat conductive insulating casting glue；As shown in figure 4, the input and outfan of the power-supply filter are respectively comprising just
Pole (P ends and P ' ends) and negative pole (N-terminal and N ' ends)；Rectify from the output of the input anode to power-supply filter of power-supply filter
Extreme direction has been sequentially connected in series common mode inductance L1A and common mode inductance L2A；Input cathode from power-supply filter is to power-supply filter
Negative pole of output end direction be sequentially connected in series common mode inductance L1B and common mode inductance L2B；Power-supply filter input positive pole with
Lightning-protection module is respectively connected between negative pole, between the positive pole of power-supply filter outfan and negative pole；Common mode inductance L1A and common mode electricity
Differential mode capacitor C1 is connected between the input of sense L1B；It is connected between the outfan of common mode inductance L1A and common mode inductance L1B
Differential mode capacitor C2；Differential mode capacitor C7 is connected between the outfan of common mode inductance L2A and common mode inductance L2B；Common mode capacitance C3 with
Common mode capacitance C4, common mode capacitance C5 and common mode capacitance C6 are connected in series respectively two-by-two, and the connection end being connected in series with ground phase
Connect, common mode capacitance C3 of series connection is overall with common mode capacitance C4 in parallel with differential mode capacitor C2, and common mode capacitance C5 of series connection is electric with common mode
Hold C6 overall in parallel with differential mode capacitor C7；By way of taking differential mode-common mode and intersecting cascade so that the filtering of power-supply filter
Performance is more preferable.
As shown in figure 5, described lightning-protection module includes discharge tube F and some varistor MOV；Each varistor is wherein
One end is corresponding connected with the input of power-supply filter, the positive pole (P ends, P ' ends) of outfan or negative pole (N-terminal, N ' ends) respectively,
The other end of varistor and after connecing discharged in series pipe to earial drainage ground terminal；Described detector unit includes power module B, double limits
Comparator A, buzzer module BEEP and dpdt relay；One end and two poles of dpdt relay triggering pin K1-T
The anode of pipe D1 is connected, and the negative electrode of diode D1 is connected to earial drainage ground terminal；Dpdt relay triggering pin K1-T's is another
End is connected with one of redundant terminals J of input connector or out connector, and is input into the hot side of power module B
It is connected；The normally opened movable contact end of two of dpdt relay switch K1-1, K1-2 respectively with varistor and discharge tube
Connection end, earial drainage ground terminal are connected, two stationary contact end input respectively with double-limit comparator A, the electronegative potential of power module B
Side input is corresponding to be connected；Also comprising high reference voltage outfan and low reference voltage output terminal, which corresponds respectively to power module B
The high threshold voltage input and low threshold voltage input of double-limit comparator A is connected, while providing the active of double-limit comparator A
Power supply；The output of double-limit comparator A is connected with the input of buzzer module BEEP；It should be noted that the company of double-limit comparator
Binding structure, Current amplifier drive, and the reference voltage of power module sets and is prior art, will not be described here.
This filtering unit improves filtering by insertion end with the cooperation of circular groove and the gap filling of conductive rubber strip
The overall shielding propertiess of component, simultaneously because reducing the contact resistance between lid and base, also further ensure good
Ground connection performance；The U-shaped mounting groove and installing hole of rounded distribution is installed fixed filtering unit for multi-angle and is provided conveniently, is suitable to
The different installation environments that outdoor is likely encountered；The lightning-protection module that the heat conductive insulating casting glue that power-supply filter is passed through is covered and included
The demand of the lightning protection waterproof under the conditions of solving filtering unit in the wild；When need detect lightning-protection module element whether effective
When, input and the out connector of docking filtering unit equipment is extracted, using metal ferrule or banjo by power-supply filter
The redundant terminals short circuit of pin, dotted line in such as Fig. 5 is triggered with dpdt relay is connected in one end of input or out connector
Shown；External power source positive pole is connected to the connecting line between metal ferrule or banjo, external power source negative pole and Grounding For Current Discharge
End (i.e. ground pipe or shielding shell) is connected；Now the triggering end of dpdt relay produces voltage and goes forward side by side to take action and makees, inspection
Power module, double-limit comparator and the buzzer module for surveying unit is powered, and the partial pressure pressure drop between varistor and discharge tube is led to
The switch for crossing dpdt relay is connected to the input of double-limit comparator, and the reference voltage ratio with power module output
Compared with；When varistor or normal discharge tube resistance, buzzer module ring, when varistor or discharge tube resistance exception, is passed
The defeated magnitude of voltage to double-limit comparator input not between the height reference voltage range of power module output when, then buzzer
Module is not rung, so as to represent the abnormal state of lightning-protection module；In addition, when thunder and lightning is drained into the earth by ground pipe, greatly
The heat that electric current is produced causes ground pipe temperature to raise, when temperature rises to the temperature-measuring range of irreversible temperature indicating paint coating
When, then there is color change in irreversible temperature indicating paint coating such that it is able to recognises that and met with thunderbolt or carried out effective
Lightning protection, substantially to grasp " logging " of lightning-protection module.
Finally illustrate, above example is only unrestricted in order to the technical solution of the utility model to be described, although ginseng
This utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent, the objective and model without deviating from technical solutions of the utility model
Enclose, which all should be covered in the middle of right of the present utility model.
Claims (7)
1. a kind of new filtering unit, comprising shield shell and power-supply filter, power-supply filter is placed in shield shell, in screen
Cover and the input connector being connected corresponding with the input of power-supply filter, outfan and out connector are installed on housing；Its
It is characterised by：Described shield shell includes base and upper lid；The circular cylindrical cavity knot that the profile of the upper lid is opened in one side
Structure, is insertion end in one end of open sides, the external diameter of the external diameter of insertion end less than circular cylindrical cavity structure；The profile of the base
Rounded pie structure, base are wherein simultaneously provided with the circular groove that a circle is mated with insertion end size, base another side
The some mounting grooves of the rounded distribution in edge；Mounting groove takes the shape of the letter U, and the vertical section end of U-shaped open sides is communicated with the outer rim of base；
Insertion end insertion circular groove is simultaneously fixedly connected, and be connected with conductive rubber strip between circular groove and insertion end；By circle
The outside of groove, includes the installing hole through base in the region of each U-shaped mounting groove；Described power-supply filter includes
For the big voltage that connection end instantaneously occurs to be shorted to the lightning-protection module of earial drainage ground terminal, and power-supply filter is overall exhausted by heat conduction
Edge casting glue is covered.
2. a kind of new filtering unit according to claim 1, it is characterised in that：Also including is used for detecting lightning-protection module unit
Whether part is in the detector unit of normal condition.
3. a kind of new filtering unit according to claim 1 and 2, it is characterised in that：Also including is used for displaying whether to meet with
Meet thunderbolt effect or carry out the caution structure of effective lightning strike protection.
4. a kind of new filtering unit according to claim 1, it is characterised in that：The input of power-supply filter and output
End is respectively comprising positive pole and negative pole；From the output head anode direction of the input anode to power-supply filter of power-supply filter successively
It is in series with common mode inductance L1A and common mode inductance L2A；Bear from the outfan of the input cathode to power-supply filter of power-supply filter
Extreme direction has been sequentially connected in series common mode inductance L1B and common mode inductance L2B；Between the positive pole and negative pole of power-supply filter input,
Lightning-protection module is respectively connected between the positive pole and negative pole of power-supply filter outfan；Common mode inductance L1A's and common mode inductance L1B is defeated
Enter differential mode capacitor C1 is connected between end；Differential mode capacitor is connected between the outfan of common mode inductance L1A and common mode inductance L1B
C2；Differential mode capacitor C7 is connected between the outfan of common mode inductance L2A and common mode inductance L2B；Common mode capacitance C3 and common mode capacitance
C4, common mode capacitance C5 and common mode capacitance C6 are connected in series respectively two-by-two, and the connection end being connected in series is connected with ground, series connection
Common mode capacitance C3 and common mode capacitance C4 are overall in parallel with differential mode capacitor C2, common mode capacitance C5 of series connection and common mode capacitance C6 integrally with
Differential mode capacitor C7 is in parallel.
5. a kind of new filtering unit according to claim 3, it is characterised in that：Described lightning-protection module includes discharge tube
With some varistors；Wherein one end of each varistor input respectively with power-supply filter, the positive pole of outfan or negative
Extremely corresponding be connected, the other end of varistor and after connecing discharged in series pipe to earial drainage ground terminal.
6. a kind of new filtering unit according to claim 2, it is characterised in that：Described detector unit includes power supply mould
Block, double-limit comparator, buzzer module and dpdt relay；One end of dpdt relay triggering pin and diode
The anode of D1 is connected, and the negative electrode of diode D1 is connected to earial drainage ground terminal；Dpdt relay triggering pin the other end with defeated
The one of redundant terminals for entering adapter or out connector are connected, and are connected with the hot side input of power module；Double
Two normally opened movable contact ends of dpdt double-pole double-throw (DPDT) relay connection end respectively with varistor and discharge tube, earial drainage ground terminal are connected, its
Two stationary contact ends are corresponding with the input of the low potential side of the input of double-limit comparator, power module connected respectively；Power module
Also comprising high reference voltage outfan and low reference voltage output terminal, the high threshold voltage which corresponds respectively to double-limit comparator is defeated
Enter end and low threshold voltage input is connected；The output of double-limit comparator is connected with the input of buzzer module.
7. a kind of new filtering unit according to claim 3, it is characterised in that：The caution structure includes solid with upper lid
The ground pipe of fixed connection, the surface spraying of ground pipe have irreversible temperature indicating paint coating, and its temperature-measuring range is 75 DEG C～220
Between DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620916041.XU CN206023572U (en) | 2016-08-22 | 2016-08-22 | A kind of new filtering unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620916041.XU CN206023572U (en) | 2016-08-22 | 2016-08-22 | A kind of new filtering unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206023572U true CN206023572U (en) | 2017-03-15 |
Family
ID=58250574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620916041.XU Expired - Fee Related CN206023572U (en) | 2016-08-22 | 2016-08-22 | A kind of new filtering unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206023572U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100302A (en) * | 2016-08-22 | 2016-11-09 | 重庆大及电子科技有限公司 | A kind of novel filtering unit |
-
2016
- 2016-08-22 CN CN201620916041.XU patent/CN206023572U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100302A (en) * | 2016-08-22 | 2016-11-09 | 重庆大及电子科技有限公司 | A kind of novel filtering unit |
| CN106100302B (en) * | 2016-08-22 | 2019-02-19 | 重庆大及电子科技有限公司 | A kind of novel filtering unit |
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