CN206004523U - The power circuit of anti-lightning surge and the measuring instrument made with this circuit - Google Patents
The power circuit of anti-lightning surge and the measuring instrument made with this circuit Download PDFInfo
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- CN206004523U CN206004523U CN201620880459.XU CN201620880459U CN206004523U CN 206004523 U CN206004523 U CN 206004523U CN 201620880459 U CN201620880459 U CN 201620880459U CN 206004523 U CN206004523 U CN 206004523U
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- 239000003990 capacitor Substances 0.000 claims abstract description 22
- 230000005764 inhibitory process Effects 0.000 claims abstract description 18
- 230000005611 electricity Effects 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 4
- -1 poly- Polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims 3
- 239000010409 thin film Substances 0.000 claims 3
- 239000010408 film Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 101100503482 Arabidopsis thaliana FTSH5 gene Proteins 0.000 description 4
- 101150082136 VAR1 gene Proteins 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 101000880187 Homo sapiens Craniofacial development protein 1 Proteins 0.000 description 1
- 101000875401 Homo sapiens Sterol 26-hydroxylase, mitochondrial Proteins 0.000 description 1
- 101000610640 Homo sapiens U4/U6 small nuclear ribonucleoprotein Prp3 Proteins 0.000 description 1
- 101001110823 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) 60S ribosomal protein L6-A Proteins 0.000 description 1
- 101000712176 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) 60S ribosomal protein L6-B Proteins 0.000 description 1
- 102100036325 Sterol 26-hydroxylase, mitochondrial Human genes 0.000 description 1
- 102100040374 U4/U6 small nuclear ribonucleoprotein Prp3 Human genes 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
This utility model provides a kind of power circuit of anti-lightning surge, including first order absorbing circuit, rectification circuit, common mode inhibition inductance, second level absorbing circuit, storage capacitor and rear class power circuit；Second level absorbing circuit includes the first clamp circuit, the second clamp circuit, critesistor and voltage follower；The outfan of common mode inhibition inductance connects the first clamp circuit, output cathode connects critesistor and the second clamp circuit, the input of voltage follower connects the outfan of the second clamp circuit, outfan connects the output negative pole of common mode inhibition inductance by storage capacitor, is simultaneously connected with rear class power circuit.This utility model additionally provides the measuring instrument applying the power circuit of described anti-lightning surge to be powered.Power circuit of the present utility model lasts a long time, and anti-lightning surge effect is good, and reliability is high, low cost, small volume.Apply the measuring instrument of power circuit of the present utility model, same reliability is high, low cost, small volume.
Description
Technical field
This utility model is specifically related to a kind of power circuit of anti-lightning surge and the measuring instrument made with this circuit.
Background technology
In this year, with the development of smart electronics, smart electronicses product has also appeared widely in the day of people
Among often producing and living, also play huge effect simultaneously.
The advantages of intelligent metering instrument is transmitted with its automatic gauge, automation data, has been obtained in metering industry
Extensively apply.In intelligent metering instrument, power circuit is undoubtedly one of core circuit of measuring instrument electric-control system, and it carries
Electric-control system for measuring instrument provides the vital task of electric energy.
Lightning surge test is one of regulation test that electrical equipment needs pass through.For measuring instrument, especially for
For intelligent electric energy meter, lightning surge test is one of basic test.At present, the power circuit of traditional anti-lightning surge
As shown in Figure 1（Taking three phase mains as a example）：After three-phase four-wire system power supply enters circuit, all concatenate between three-phase power line and ground wire
One varistor（In figure indicates VARA, VARB and VARC）, simultaneously three-phase power line each via current-limiting resistance（In figure mark
Show RA, RB and RC）Afterwards through uncontrollable rectifier circuit, then after common mode inhibition inductance L2, the electricity of DC power output to rear class
Source translation circuit；Also it is parallel with two high withstand voltages between outfan, jumbo electrochemical capacitor CP3 and CP27 carries out energy storage filter
Ripple, carries out certain absorption to the residual voltage of the lightning surge electric energy of input simultaneously, is also parallel with each electrochemical capacitor two ends
Equalizing resistance（In figure indicates RP3, RP4, RP5, RP16, RP18 and RP20）；The output signal of the common mode inhibition inductance of this circuit
It is the input signal of rear class power circuit.Varistor VARA, VARB and VARC and current-limiting resistance RA, RB and RC constitute
The absorbing circuit of one-level.
The power circuit being illustrated in figure 2 existing anti-lightning surge is carrying out rear class electricity when 4.4kV lightning surge is tested
The voltage oscillogram of source circuit input：Can see when carrying out the test of 4.4kV lightning surge, finally be coupled into rear class electricity
The voltage max of source circuit about 1.1kV.
But, using high withstand voltage, jumbo electrochemical capacitor, have the disadvantage that：1）High withstand voltage, jumbo electrolysis
Electric capacity cost is high；2）High withstand voltage, jumbo electrochemical capacitor volume greatly, occupy substantial amounts of PCB space；3）Liquid electricity
The solution electric capacity life-span is shorter, generally below 10000 hours；4）The service behaviour of electrochemical capacitor is very sensitive to ambient temperature, impact
The reliability of electrochemical capacitor.
Utility model content
One of the purpose of this utility model is to provide that a kind of anti-lightning surge effect is good, low cost, small volume, reliability
The power circuit of high anti-lightning surge.
The two of the purpose of this utility model are to provide a kind of gauge of the power circuit comprising described anti-lightning surge
Table.
This utility model provide this anti-lightning surge power circuit, including first order absorbing circuit, rectification circuit,
Common mode inhibition inductance, storage capacitor and rear class power circuit, also include second level absorbing circuit；Second level absorbing circuit includes
One clamp circuit, the second clamp circuit, critesistor and voltage follower；First is connected between the outfan of common mode inhibition inductance
Clamp circuit, the output cathode of common mode inhibition inductance, after critesistor, reconnects the second clamp circuit, the second clamp circuit
Outfan connect the input of voltage follower, the outfan of voltage follower passes through storage capacitor connection common mode inhibition inductance
Output negative pole, be simultaneously connected with rear class power circuit.
The first described clamp circuit is varistor.
The second described clamp circuit is varistor.
Described voltage follower is the emitter follower being made up of audion.
Described storage capacitor is polypropylene film electric capacity.
This utility model additionally provides the metering that a kind of power circuit applying described anti-lightning surge carries out power supply supply
Instrument.
The power circuit of this anti-lightning surge that this utility model provides, by replacing the electrolysis in conventional power source circuit
Electric capacity, improves the life-span of power circuit；By increased second level anti-lightning surge circuit, anti-lightning surge effect is good, improves
The reliability of power circuit, reduces the risk of back end device damage；Meanwhile, power circuit of the present utility model, low cost
Honest and clean, and under volume, take less PCB space.
Brief description
Fig. 1 is the circuit theory diagrams of the power circuit of anti-lightning surge of background technology.
Fig. 2 be background technology anti-lightning surge power circuit when lightning surge is tested rear class power circuit input
Voltage oscillogram.
Fig. 3 is the functional block diagram of the power circuit of anti-lightning surge of the present utility model.
Fig. 4 is the circuit theory diagrams in three phase mains for the power circuit of anti-lightning surge of the present utility model.
Fig. 5 is power circuit rear class power circuit input when lightning surge is tested of anti-lightning surge of the present utility model
The voltage oscillogram at end.
Specific embodiment
It is illustrated in figure 3 the functional block diagram of the power circuit of anti-lightning surge of the present utility model：This utility model carries
For this anti-lightning surge power circuit, including first order absorbing circuit, rectification circuit, common mode inhibition inductance, energy storage electricity
Hold and rear class power circuit, also include second level absorbing circuit；Second level absorbing circuit includes the first clamp circuit, the second clamp
Circuit, critesistor and voltage follower；The first clamp circuit, common mode inhibition electricity is connected between the outfan of common mode inhibition inductance
The output cathode of sense, after critesistor, reconnects the second clamp circuit, and the output cathode of the second clamp circuit connects voltage
The input of follower, the outfan of voltage follower is grounded by storage capacitor, is simultaneously connected with rear class power circuit.
It is illustrated in figure 4 the power circuit of the anti-lightning surge of the present utility model circuit theory diagrams in three phase mains：
In figure varistor VARA, VARB and VARC, the first order that current-limiting resistance RA, RB and RC have collectively constituted power circuit absorbs electricity
Road, diode DP1 ~ DP8 constitutes uncontrollable rectifier circuit, and L2 is common mode inhibition inductance, and varistor VARN is the first clamp electricity
Road, resistance PTC is varistor, and varistor VAR1 is the second clamp circuit, and resistance R1, resistance R2 and audion Q1 constitute
There is the audion emitter follower of voltage follower function, electric capacity CP1 adopts polypropylene film electric capacity as storage capacitor.
During three phase mains input, after outside three phase and four wire circuit system accesses power circuit, three-phase power line and ground wire
Between all concatenate a varistor（In figure indicates VARA, VARB and VARC）, simultaneously three-phase power line each via current limliting
Resistance（In figure indicates RA, RB and RC）Afterwards through uncontrollable rectifier circuit（In figure indicates DP1 ~ DP8）, then pass through common mode inhibition inductance
L2, is connected with varistor VRAN, the positive signal of output is in concatenation critesistor PTC between the positive pole of output signal and negative pole
Afterwards, it is connected with current-limiting resistance R1 and R2 and the second clamp circuit VAR1, the base of audion Q1 between signal positive pole and negative pole
Pole is connected to the positive pole of varistor VAR1, the colelctor electrode of audion connected through critesistor after signal positive pole, three poles
The emitter stage of pipe is the output stage of whole circuit, connects rear class power circuit, and output stage connects also by storage capacitor CP1 simultaneously
Signal negative pole.
The second level absorbing circuit that this utility model provides, main working process is：After varistor VARN clamper, lead to
Cross critesistor PTC and current-limiting protection carried out to audion Q1 below, audion Q1 provides base current by resistance R1, R2,
To make audion Q1 normal work.After varistor VAR1 is effectively absorbed to pressure-sensitive residual voltage, on emitter stage, polypropylene is thin
The voltage at membrane capacitance CP1 two ends is（VVAR1- Vbe）, so just can well the surge residual voltage of input be suppressed.
Be illustrated in figure 5 the power circuit of anti-lightning surge of the present utility model when lightning surge is tested after level power supply electricity
The voltage oscillogram of road input：Can see that the power circuit of the anti-lightning surge that this utility model provides is being carried out
During the test of 4.4kV lightning surge, finally it is coupled into the voltage max about 705V of rear class power circuit hence it is evident that being better than existing skill
The power circuit of the anti-lightning surge of art.
The power circuit of the anti-lightning surge that this utility model provides can be used for all types of measuring instruments, such as intelligently
Calorimeter, intellectual water meter, intelligent electric meter, intelligent gas meter etc.；Can be used for others needs to carry out the electricity of anti-lightning surge
Gas equipment, such as distribution terminal, concentrator etc..
Claims (10)
1. a kind of power circuit of anti-lightning surge, including first order absorbing circuit, rectification circuit, common mode inhibition inductance, energy storage
Electric capacity and rear class power circuit are it is characterised in that also include second level absorbing circuit；Second level absorbing circuit includes the first clamp
Circuit, the second clamp circuit, critesistor and voltage follower；The first clamp electricity is connected between the outfan of common mode inhibition inductance
Road, the output cathode of common mode inhibition inductance, after critesistor, reconnects the second clamp circuit, the output of the second clamp circuit
End connects the input of voltage follower, and the outfan of voltage follower connects the output of common mode inhibition inductance by storage capacitor
Negative pole, is simultaneously connected with rear class power circuit.
2. the power circuit of anti-lightning surge according to claim 1 is it is characterised in that the first described clamp circuit is
Varistor.
3. the power circuit of anti-lightning surge according to claim 1 and 2 is it is characterised in that described the second clamp circuit
For varistor.
4. the power circuit of anti-lightning surge according to claim 1 and 2 is it is characterised in that described voltage follower is
The emitter follower being made up of audion.
5. the power circuit of anti-lightning surge according to claim 3 is it is characterised in that described voltage follower is served as reasons
The emitter follower of audion composition.
6. the power circuit of anti-lightning surge according to claim 1 and 2 is it is characterised in that described storage capacitor is poly-
Polypropylene film electric capacity.
7. the power circuit of anti-lightning surge according to claim 3 is it is characterised in that described storage capacitor is poly- third
Alkene thin-film capacitor.
8. the power circuit of anti-lightning surge according to claim 4 is it is characterised in that described storage capacitor is poly- third
Alkene thin-film capacitor.
9. the power circuit of anti-lightning surge according to claim 5 is it is characterised in that described storage capacitor is poly- third
Alkene thin-film capacitor.
10. a kind of measuring instrument is it is characterised in that include the power circuit of the anti-lightning surge described in claim 1 ~ 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620880459.XU CN206004523U (en) | 2016-08-15 | 2016-08-15 | The power circuit of anti-lightning surge and the measuring instrument made with this circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620880459.XU CN206004523U (en) | 2016-08-15 | 2016-08-15 | The power circuit of anti-lightning surge and the measuring instrument made with this circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206004523U true CN206004523U (en) | 2017-03-08 |
Family
ID=58200120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620880459.XU Active CN206004523U (en) | 2016-08-15 | 2016-08-15 | The power circuit of anti-lightning surge and the measuring instrument made with this circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206004523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100308A (en) * | 2016-08-15 | 2016-11-09 | 威胜集团有限公司 | The power circuit of anti-lightning surge and the measuring instrument made with this circuit |
-
2016
- 2016-08-15 CN CN201620880459.XU patent/CN206004523U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100308A (en) * | 2016-08-15 | 2016-11-09 | 威胜集团有限公司 | The power circuit of anti-lightning surge and the measuring instrument made with this circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: The two phase of the project wasion Technology Park No. 468 Tongzi high tech Development Zone, Hunan province Changsha road 410205 No. 11 building 101 floor No. 1-8 Patentee after: HUNAN SEEHRE POWER TECHNOLOGY CO.,LTD. Address before: 410003, Changsha, Yuelu District, silver basin Ling Ling Street, No. 359 South Road, No., No. two, 1-5 Patentee before: HUNAN SHENG AND ELECTRONIC TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: The two phase of the project wasion Technology Park No. 468 Tongzi high tech Development Zone in Hunan province Changsha slope 410205 West Road No. 11 building 101 floor No. 1-8 Patentee after: HUNAN SEEHRE POWER TECHNOLOGY CO.,LTD. Address before: The two phase of the project wasion Technology Park No. 468 Tongzi high tech Development Zone, Hunan province Changsha road 410205 No. 11 building 101 floor No. 1-8 Patentee before: HUNAN SEEHRE POWER TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231027 Address after: Room 101, 3rd Floor, Building 11, Phase II of Weisheng Science and Technology Park, No. 468 Tongzipo West Road, High tech Development Zone, Changsha City, Hunan Province, 410205 Patentee after: Hunan Shenghe Intelligent Control Technology Co.,Ltd. Address before: 410205 no.1-8, 3rd floor, 101, No.11 plant, phase II project, Weisheng Science Park, no.468, tongzipo West Road, high tech Development Zone, Changsha City, Hunan Province Patentee before: HUNAN SEEHRE POWER TECHNOLOGY CO.,LTD. |