CN107317298B - Automatic recovery type power fuse - Google Patents
Automatic recovery type power fuse Download PDFInfo
- Publication number
- CN107317298B CN107317298B CN201710493962.9A CN201710493962A CN107317298B CN 107317298 B CN107317298 B CN 107317298B CN 201710493962 A CN201710493962 A CN 201710493962A CN 107317298 B CN107317298 B CN 107317298B
- Authority
- CN
- China
- Prior art keywords
- zener diode
- fusing
- delay
- group
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/063—Details concerning the co-operation of many similar arrangements, e.g. in a network
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Fuses (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The present invention provides a kind of automatic recovery type power fuse, including the fusing group being formed in parallel by more than two fusing units；Each fusing unit includes the fuse being serially connected and Zener diode group, and the Zener diode group includes two Zener diodes reversely concatenated；The fusing group is connected after module mutually concatenates with a delay and constitutes the power fuse；It is normally closed switch that module is connected in the delay, and after the circuit where the power fuse suddenly open circuit, the delay connects module and jumps and be maintained at off-state for a period of time.The fuse can fuse rapidly in circuit overloads, and can after a period of time that is delayed automatic restoring circuit.
Description
Technical field
The present invention relates to electric power facility fields, particularly, are related to a kind of power fuse.
Background technique
In electric power protection facility field, common protection location includes electrothermal relay and fuse；For electrothermal relay,
It disconnects, and can be closed automatically after the cooling period automatically when circuit overloads；Its shortcoming is that overload response time is longer, need to extremely
Ability disconnecting circuit after its bimetal leaf deformation, it is difficult to meet higher security requirement；And for current fuse, molten
After silk overload fusing, fuse or fusion tube are required manual replacement, ability restoring circuit, this will cause biggish fiber crops to ordinarily resident
It is tired.
Summary of the invention
In view of the above-mentioned problems, the fuse can the purpose of the present invention is to provide a kind of automatic recovery type power fuse
Fuse rapidly in circuit overloads, and can after a period of time that is delayed automatic restoring circuit.
The technical solution adopted by the present invention to solve the technical problems is: the automatic recovery type power fuse includes by two
The fusing group that a above fusing unit is formed in parallel；Each fusing unit includes the fuse and Zener diode being serially connected
Group, the Zener diode group include two Zener diodes reversely concatenated；The fusing group connects module with a delay
The power fuse is constituted after mutually concatenating；It is normally closed switch that module is connected in the delay, and where the power fuse
Circuit open circuit suddenly after, delay connection module jumps and is maintained at off-state for a period of time.
Preferably, the breakdown reverse voltage of two Zener diodes in the same Zener diode group is identical, and
The breakdown reverse voltage of the Zener diode of different Zener diode groups is different.
Preferably, it includes the electrothermal relay being serially connected, mutual inductor that module is connected in the delay；The mutual inductor output
To a bridge rectifier, the bridge rectifier is exported to polarity storage capacitor；The anode of the polarity storage capacitor
Concatenate one end that the electrothermal relay is electrically connected to after a Zener diode, the cathode concatenation one of the polarity storage capacitor
The other end of the electrothermal relay is electrically connected to after a impedance inductance.
Preferably, it includes the normally closed switch being serially connected, mutual inductor that module is connected in the delay；The mutual inductor output
To a bridge rectifier, the bridge rectifier is exported to polarity storage capacitor；The polarity storage capacitor and one
Zener diode and an electromagnet form series loop；The shaft of the moving contact of the normally closed switch is spring shaft, natural shape
Under state, which be pressed in moving contact on static contact, remains closed normally closed switch；And it is reversed in the Zener diode
Breakdown, when the polarity storage capacitor powers to the electromagnet, the electromagnet is to the normally closed switch, comprising armature
Moving contact attracts, and moving contact is made to be drawn to electromagnet, and disconnects the normally closed switch, until the voltage of the polarity storage capacitor
Drop to critical value.
Preferably, it includes the normally closed switch being serially connected, mutual inductor that module is connected in the delay；The mutual inductor output
To a bridge rectifier, the output end and a Zener diode of the bridge rectifier output and an electromagnetism bodily form
At series loop；The shaft of the moving contact of the normally closed switch is winder, and under natural conditions, which is in half relaxation shape
State is pressed in moving contact on static contact, remains closed normally closed switch；And it is reversed breakdown in the Zener diode, it is described
When electromagnet is powered, the electromagnet to the normally closed switch, moving contact comprising armature attract, so that moving contact is drawn to electromagnetism
Body, and disconnect the normally closed switch, and tighten winder.
The beneficial effects of the present invention are: the automatic recovery type power fuse is serially connected in operating circuit, when circuit quilt
When connection, due to receiving the limitation of manufacturing process, the parameter of each Zener diode group leads to always have one there is always difference
The conducting breakdown first of Zener diode group, so that the fusing unit where making it is connected, this makes entire power fuse two
The voltage dip at end, thus make other fusing units can not be switched on, even if only one fusing unit participate in work；And work as
When participating in the fusing unit fusing of work, the delay connects module and jumps and be maintained at off-state for a period of time, can be used
Some overload electric appliances are closed at family；Then, module recovery on-state is connected in delay, hereafter, as previously mentioned, another fusing unit
It is first switched on, then alone bear fusing insurance work, to ensure that quick overload responds.
Detailed description of the invention
Fig. 1 is the electrical structure schematic diagram of this automatic recovery type power fuse.
Fig. 2 is in this automatic recovery type power fuse, and one schematic diagram of embodiment of module is connected in delay.
Fig. 3 is in this automatic recovery type power fuse, and two schematic diagram of embodiment of module is connected in delay.
Fig. 4 is in this automatic recovery type power fuse, and three schematic diagram of embodiment of module is connected in delay.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
As shown in Figure 1, this automatic recovery type power fuse includes the fusing being formed in parallel by more than two fusing units 1
Group；Each fusing unit 1 includes the fuse 11 being serially connected and Zener diode group 12, the Zener diode group 12 include
Two Zener diodes reversely concatenated；It is molten that the fusing group constitutes the electric power after concatenating with delay connection 2 phase of module
Disconnected device；It is normally closed switch that module 2 is connected in the delay, and after the circuit where the power fuse suddenly open circuit, described
Delay connects module 2 and jumps and be maintained at off-state for a period of time.
Above-mentioned power fuse, the reverse breakdown electricity of two Zener diodes in the same Zener diode group 12
Press identical, and the breakdown reverse voltage of the Zener diode of different Zener diode group 12 is different.To make breakdown reverse voltage
Minimum Zener diode group punctures at first.
Above-mentioned power fuse connects module for the delay, and embodiment one is as shown in Figure 2: in Fig. 2, institute
Stating delay and connecting module 2 includes electrothermal relay FR, the mutual inductor CT being serially connected；The mutual inductor CT exports whole to a bridge-type
Current circuit UR, the bridge rectifier UR are exported to polarity storage capacitor C；The anode concatenation one of the polarity storage capacitor C
One end of the electrothermal relay FR, the cathode concatenation one of the polarity storage capacitor C are electrically connected to after a Zener diode D1
The other end of the electrothermal relay FR is electrically connected to after a impedance inductance L.
According to embodiment one, during the circuit where the power fuse works normally, the polarity energy storage electricity
Hold C and gradually stores up full electric energy, and due to the presence of Zener diode D1, polarity storage capacitor C does not discharge to electrothermal relay FR；When molten
Silk 11 is blown, and when circuit is breaking suddenly, mutual inductor CT generates an inductive impulse, to make two pole of Zener since magnetic flux is mutated
Pipe D1 is punctured by moment, and polarity storage capacitor C discharges to electrothermal relay FR, so that electrothermal relay FR is rapidly heated and disconnects, and protects
Hold off-state for a period of time, make user within this time to overload electric appliance into removing.In embodiment one, for institute
Impedance inductance L is stated, effect is, to the exchange huge impedance of electric forming, to make the both ends impedance inductance L shape after electrothermal relay FR disconnection
At biggish voltage drop, reduce the partial pressure at fusing group both ends, so that it is guaranteed that when relay FR is disconnected, in each unit 1 that fuses
Zener diode group 12 can not puncture.
Module is connected in the delay, and embodiment two is as shown in Figure 3: in example 2, module packet is connected in the delay
Include the normally closed switch K1 being serially connected, mutual inductor CT；The mutual inductor CT is exported to a bridge rectifier UR, the bridge-type
Rectification circuit UR is exported to polarity storage capacitor C；A polarity storage capacitor C and Zener diode D1 and an electromagnet
YA forms series loop；The shaft 20 of the moving contact of the normally closed switch K1 is spring shaft, and under natural conditions, which makes
Contact is pressed on static contact, remains closed normally closed switch K1；And breakdown, the polarity are reversed in the Zener diode D1
When storage capacitor C powers to the electromagnet YA, the electromagnet YA is to the normally closed switch K1, moving contact comprising armature
Attract, moving contact is made to be drawn to electromagnet YA, and disconnect the normally closed switch K1, until the voltage of the polarity storage capacitor C
Drop to critical value.
According to embodiment two, as embodiment one, only when circuit disconnects suddenly, the Zener diode D1 is just hit
It wears, to make electromagnet YA obtain a period of time magnetism, to the moving contact of normally closed switch K1 is attracted at electromagnet YA, directly
Voltage to polarity storage capacitor C drops to critical value, and the exciting current of electromagnet YA is not enough to overcome returning for the spring shaft
Multiple power.
Module is connected in the delay, and embodiment three is as shown in Figure 4: for embodiment three, unlike embodiment two,
There is no the polarity storage capacitor C in embodiment two；The shaft 20 of the moving contact of the normally closed switch K1 is winder, nature
Under, which is in half relaxed state, is pressed in moving contact on static contact, remains closed normally closed switch；And described
Zener diode D1 is reversed breakdown, when the electromagnet YA is powered, the electromagnet YA to the normally closed switch, include rank
The moving contact of iron attracts, and moving contact is made to be drawn to electromagnet YA, and disconnects the normally closed switch K1, and tighten winder.And
The recovery needs of normally closed switch K1 are gradually unclamped to the winder, until the moving contact is returned to the shape being pressed on static contact
State equally meets the effect that delay is connected；And compared to embodiment two, structure is more simplified.
Above-mentioned automatic recovery type power fuse is serially connected in operating circuit, when circuit is switched on, due to each described neat
The parameter of diode group 12 received has differences, and leads to always have the conducting breakdown first of a Zener diode group 12, to make it
The fusing unit 1 at place is connected, this makes the voltage dip at entire power fuse both ends, to make other fusing units can not
Be switched on, though only one fusing unit 1 participate in work；And when participating in the fusing unit fusing of work, the delay
It connects module 2 to jump and be maintained at off-state for a period of time, family can be used to close some overload electric appliances；Then, delay is connected
Module 2 restores on-state, hereafter, as previously mentioned, another fusing unit is first switched on, and then alone bear fusing insurance
Work, to ensure that quick overload responds.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, made any modification, equivalent replacement be should all be included in the protection scope of the present invention.
Claims (1)
1. a kind of working method of automatic recovery type power fuse, it is characterised in that: the automatic recovery type power fuse
Including the fusing group being formed in parallel by more than two fusing unit (1)；Each fusing unit (1) include be serially connected it is molten
Silk (11) and Zener diode group (12), the Zener diode group (12) include two Zener diodes reversely concatenated；Institute
It states after fusing group is mutually concatenated with delay connection module (2) and constitutes the power fuse；Module (2) are connected in the delay
For normally closed switch, and after the circuit where the power fuse suddenly open circuit, delay connection module (2) is jumped simultaneously
It is maintained at off-state for a period of time;
The breakdown reverse voltage of two Zener diodes in the same Zener diode group (12) is identical, and different Zeners
The breakdown reverse voltage of the Zener diode of diode group (12) is different;Two pole of Zener to keep breakdown reverse voltage minimum
Pipe group punctures at first；
It includes the electrothermal relay (FR) being serially connected, mutual inductor (CT) that module (2) are connected in the delay；The mutual inductor (CT)
Output a to bridge rectifier (UR), the bridge rectifier (UR) exports to polarity storage capacitor (C)；The pole
Property storage capacitor (C) anode one Zener diode (D1) of concatenation after be electrically connected to one end of the electrothermal relay (FR),
The cathode of the polarity storage capacitor (C) is electrically connected to the another of the electrothermal relay (FR) after concatenating an impedance inductance (L)
One end;
The working method is specific as follows: during the circuit where power fuse works normally, the polarity storage capacitor
(C) full electric energy is gradually stored up, and due to the presence of Zener diode (D1), polarity storage capacitor (C) is not put electrothermal relay (FR)
Electricity；When fuse (11) is blown, and circuit is breaking suddenly, mutual inductor (CT) generates an inductive impulse since magnetic flux is mutated, from
And puncturing Zener diode (D1) moment, polarity storage capacitor (C) discharges to electrothermal relay (FR), makes electrothermal relay
(FR) be rapidly heated and disconnect, and be maintained at off-state for a period of time, make user within this time to overload electric appliance into
Row removes；For the impedance inductance (L), effect be after electrothermal relay (FR) disconnection, to the exchange huge impedance of electric forming,
So that the both ends impedance inductance (L) is formed biggish voltage drop, reduces the partial pressure at fusing group both ends, so that it is guaranteed that in relay
(FR) when disconnecting, respectively the Zener diode group (12) in fusing unit (1) can not puncture；When circuit is switched on, by each institute
The parameter for stating Zener diode group (12) has differences, and leads to always have Zener diode group (12) conducting breakdown first,
To make the fusing unit (1) where it connect, this makes the voltage dip at entire power fuse both ends, to keep other molten
Disconnected unit can not be switched on, even if only one fusing unit (1) participates in work；And when the fusing unit fusing for participating in work
When, the delay connects module (2) and jumps and be maintained at off-state for a period of time, is able to use family and closes some overload electricity
Device；Then, module (2) recovery on-state is connected in delay, and hereafter, another fusing unit is first switched on, and is then held alone
Load fusing insurance work, to ensure that quick overload responds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710493962.9A CN107317298B (en) | 2017-06-26 | 2017-06-26 | Automatic recovery type power fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710493962.9A CN107317298B (en) | 2017-06-26 | 2017-06-26 | Automatic recovery type power fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107317298A CN107317298A (en) | 2017-11-03 |
| CN107317298B true CN107317298B (en) | 2019-10-18 |
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ID=60180123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710493962.9A Expired - Fee Related CN107317298B (en) | 2017-06-26 | 2017-06-26 | Automatic recovery type power fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107317298B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107993907B (en) * | 2017-12-28 | 2019-12-03 | 曹诗晴 | A kind of intelligent fuse with recovery function |
| CN111710575B (en) * | 2020-06-23 | 2022-11-08 | 国网湖北省电力有限公司咸宁供电公司 | Self-replacing fuse |
| CN111739770B (en) * | 2020-07-15 | 2022-04-12 | 国网甘肃省电力公司兰州供电公司 | Secondary power transmission self-resetting fuse |
| CN111653449A (en) * | 2020-07-16 | 2020-09-11 | 重庆金康动力新能源有限公司 | Intelligent fuse |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2308191Y (en) * | 1997-08-12 | 1999-02-17 | 赵泽时 | Over voltage automtic power-off protection circuit |
| CN103021753A (en) * | 2011-09-21 | 2013-04-03 | Ls产电株式会社 | Adjustable under voltage trip device |
| CN104113057A (en) * | 2014-07-01 | 2014-10-22 | 西安交通大学 | Combined type direct current switch equipment and control method thereof |
| CN106229952A (en) * | 2016-08-31 | 2016-12-14 | 许继电气股份有限公司 | Fuse assembling device and control method, dc circuit breaker and control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10116004A (en) * | 1996-10-09 | 1998-05-06 | Canon Inc | Service life monitoring device |
-
2017
- 2017-06-26 CN CN201710493962.9A patent/CN107317298B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2308191Y (en) * | 1997-08-12 | 1999-02-17 | 赵泽时 | Over voltage automtic power-off protection circuit |
| CN103021753A (en) * | 2011-09-21 | 2013-04-03 | Ls产电株式会社 | Adjustable under voltage trip device |
| CN104113057A (en) * | 2014-07-01 | 2014-10-22 | 西安交通大学 | Combined type direct current switch equipment and control method thereof |
| CN106229952A (en) * | 2016-08-31 | 2016-12-14 | 许继电气股份有限公司 | Fuse assembling device and control method, dc circuit breaker and control method |
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| Publication number | Publication date |
|---|---|
| CN107317298A (en) | 2017-11-03 |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Ning Inventor after: Ma Renhuan Inventor before: Ma Renhuan |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190919 Address after: No. 255 Gaojiazhuang Village, Kaiyuan Town, Dingzhou City, Baoding City, Hebei Province Applicant after: Zhang Ning Address before: Wujiang District of Suzhou City, Jiangsu Province, Kaiping road 215000 Wuyue square block D room 1418 Applicant before: Ma Ren Huan |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191018 Termination date: 20210626 |