CN106067669A - A kind of Novel electric surge protector - Google Patents
A kind of Novel electric surge protector Download PDFInfo
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- CN106067669A CN106067669A CN201410659993.3A CN201410659993A CN106067669A CN 106067669 A CN106067669 A CN 106067669A CN 201410659993 A CN201410659993 A CN 201410659993A CN 106067669 A CN106067669 A CN 106067669A
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- Prior art keywords
- surge protector
- normally opened
- novel electric
- judgment means
- opened contact
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Abstract
The present invention relates to a kind of Novel electric surge protector, mainly include lightning protection component, current sensor, overcurrent protective device, thermel protection device, current limiter, judgment means, actuating mechanism, normally opened contact and shell.Described lightning protection component and overcurrent protective device surge in series are released path；Described thermel protection device is positioned on lightning protection component electrode；Described current sensor is sleeved on surge and releases on path, and is connected with judgment means input；Described judgment means outfan is connected with actuating mechanism；Described actuating mechanism controls normally opened contact action；It is in parallel with lightning protection component that described normally opened contact and current limiter are composed in series bypass.In the present invention, current sensor can sense that flowing through surge releases the electric current of path; judgment means can judge the type of this electric current according to the electric current of current sensor transmission; and the state of normally opened contact can be changed by control action mechanism, efficiently solve the problem that the protection device of existing surge protector exists action blind area to power current.
Description
Technical field
The invention belongs to the surge protection technical field of electronic electric equipment.
Background technology
Thunder and lightning is a kind of special weather phenomenon caused of aloft being discharged by charged cloud.Thunder and lightning causes electronic equipment to damage
Major reason, it threatens the safety of the every field electronic informations such as building, railway, civil aviaton, communication, industry control, military affairs surely
Fixed operation.Installing surge protector on the metallic circuits such as the power line being connected with electronic equipment, holding wire and control line is thunder
One of important measures of electricity protection.Surge protector has been widely used in various field, has important effect in lightning protection.
The quality of its state then directly affects its lightning protection effect, thus the safety of protected equipment is brought hidden danger.
Present stage SPD is generally of Thermal protection and two kinds of protection devices of overcurrent protection (internal or external), Thermal protection in use
Device is used for protecting lightning protection component deterioration heating, and overcurrent protective device is used for the lightning protection device preventing transient over-current or overvoltage from causing
Part puncture short, overcurrent protection simultaneously is as a kind of back-up protection mode of Thermal protection, so can act as in most of occasions
Effective protective action.
But, owing to conduction of heat is a relatively slow process, the sensitivity of thermel protection device is low, for slow temperature-rise period
Can play effective protection, but for low (in) in pressure system due to the steep temperature rise situation caused under sustained over voltage condition,
Thermal protection trip gear can not this process of perception in time and there is not action, cause lightning protection component breakdown, power current enter SPD
Circuit, when this power frequency electric flow valuve is not reaching to the initiation value of overcurrent protective device, overcurrent protective device also will not occur action,
Thus cause SPD on fire.
In sum, there is serious action blind area in the overcurrent protective device of existing SPD and thermel protection device, and SPD is by this
During the electric current in region, the SPD that thermel protection device and overcurrent protective device all can not damage departs from main circuit, thus occurs serious
Potential safety hazard.
Summary of the invention
In order to effectively solve problem above of the prior art, the present invention propose a kind of easy for installation and dependable performance for power supply
The Novel electric surge protector of system, work is torn electric current and is deposited by the overcurrent protective device and the thermel protection device that overcome existing surge protector
Problem in action blind area.
The present invention is by the following technical solutions: the present invention is the surge protector in power electronic circuits system, including lightning protection
Element, overcurrent protective device, thermel protection device and shell；Described lightning protection component and overcurrent protective device surge in series are released
Path, described thermel protection device is positioned on lightning protection component electrode.Present invention additionally comprises current sensor, current limiter, judgment means,
Actuating mechanism, normally opened contact；Described current sensor is sleeved on surge and releases on path, and is connected with judgment means input,
Described judgment means outfan is connected with actuating mechanism, and described actuating mechanism controls normally opened contact action, described normally opened contact and limit
It is in parallel with lightning protection component that stream device is composed in series bypass.
Heretofore described judgment means built-in power and data processing unit；Described actuating mechanism passes through mechanical linkage or electromagnetism side
Formula controls normally opened contact action；After described normally opened contact Guan Bi, will not open again before overcurrent protective device disconnects；Described normally opened
Contact has reset switch；Described current limiter can be one of electronic devices such as resistance, inductance, electric capacity or by a combination thereof
Circuit；Described overcurrent protective device can be fuse or chopper；Described lightning protection component, including varistor, discharge tube,
One or a combination set of TVS.
The core of the present invention is current sensor and judgment means, and described current sensor can sense and flow through surge leadage circuit
Electric current, the data processing unit that the electric current sensed is transferred in judgment means by current sensor by the input of judgment means,
The electric current received is processed, analyzes by data processing unit, according to things such as its size, direction, rate of change, persistent period
Reason amount judges the type of this electric current, can be divided into following several situation: if judged result is less power current, then actuating mechanism is not
Action, normally opened contact do not close, thermel protection device protect；If judged result is the power current in action blind area, then
Actuating mechanism action, normally opened contact Guan Bi, the by-path turn-on that described normally opened contact and current limiter are composed in series, bypass caused
Stream protection device is protected；If judged result is the power current more than action blind area, then actuating mechanism be failure to actuate, normally opened touch
Point does not closes, overcurrent protective device directly protect；If judged result is surge current, then normally released by surge path of releasing.
It is a feature of the present invention that:
1. this Novel electric surge protector adds the bypass being connected in parallel on lightning protection component two ends, solves thermel protection device and overcurrent protection
The action blind zone problem of device；
2. the lightning protection component of this Novel electric surge protector, current sensor, overcurrent protective device, thermel protection device, current limiter,
Judgment means, actuating mechanism, normally opened contact can be integrated in one, and are loaded on housing, meet electrical equipment and lead to surge protector
Current capacity, response time and the requirement of three indexs of voltage protection level, enhance the reliability of equipment, it is possible to be contained in different
Module is combined and collectively forms the present invention, it is simple to install and use, enhance practicality；
3. the actuating mechanism in this Novel electric surge protector according to the judged result action of judgment means or is failure to actuate, actuating mechanism institute
Need energy can be supplied by judgment means, it is possible to configure single power supply, it is possible to supplied by power line；
4. this Novel electric surge protector can not have overcurrent protective device.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is first embodiment of the present invention principle schematic.
Fig. 3 is second embodiment of the present invention principle schematic.
Fig. 4 is third embodiment of the present invention principle schematic.
Fig. 5 is protected effect schematic diagram of the present invention.
Specific embodiments
The present invention is further described with embodiment below in conjunction with the accompanying drawings:
As it can be seen, 1 is that surge is released path, 2 is current sensor, and 3 is lightning protection component, and 4 is overcurrent protective device, 5
Being data processing unit, 6 is judgment means, and 7 is actuating mechanism, and 8 is normally opened contact, and 9 is current limiter, and 10 is Thermal protection dress
Putting, 11 is shell, and 11 ' is another shell, and 12 is bypass, and 13 is reset switch, and aa ' is the input of judgment means,
Bb ' is the outfan of judgment means.
Fig. 1 is this Novel electric surge protector first embodiment, and this Novel electric surge protector has overcurrent protective device in this embodiment
(4), described lightning protection component (3) and overcurrent protective device (4) surge in series are released path (1)；Described current sense
Device (2) is sleeved on surge and releases on path (1), and is connected with judgment means (6) input (aa ')；Described judgement dress
Put (6) outfan (bb ') to be connected with actuating mechanism (7)；Described thermel protection device (10) is positioned at lightning protection component (3) electricity
Extremely go up；It is in parallel with lightning protection component (3) that described normally opened contact (8) constitutes bypass (12) with current limiter (9).When surge is released
When having electric current to flow through on path (1), current sensor (2) can sense this electric current, and is passed through judgment means (6)
Input (aa ') (data processing unit (5) is at Fig. 1 to be transferred to the built-in data processing unit (5) of judgment means (6)
In be not drawn into), data processing unit (5) judges electricity according to physical quantitys such as the size of electric current, direction, rate of change, persistent period
The type of stream, if judged result is less power current, then actuating mechanism (7) is failure to actuate, normally opened contact (8) does not closes,
Protected by thermel protection device (10)；If judged result is the power current in action blind area, then actuating mechanism (7) action,
Normally opened contact (8) closes, and bypass (12) conducting that described normally opened contact (8) and current limiter (9) are composed in series, by described
Bypass (12) causes overcurrent protective device (4) and protects, after described normally opened contact (8) Guan Bi, at overcurrent protective device
(4) will not open again before disconnecting；If judged result is the power current more than action blind area, then actuating mechanism (7) be failure to actuate,
Normally opened contact (8) does not closes, overcurrent protective device (4) directly protect；If judged result is surge current, then by lightning protection
Element (3) and overcurrent protective device (4) surge in series path (1) of releasing normally is released.
Described normally opened contact has reset switch (being not drawn in schematic diagram)；Described actuating mechanism passes through mechanical linkage or electromagnetic mode
(actuating mechanism described in embodiment illustrated in fig. 1 (7) is to control normally opened contact by Electromagnetic Control mode to control normally opened contact action
Action, mechanical linkage control mode is not repeated herein).
Described lightning protection component can be one or a combination set of electronic devices such as varistor, discharge tube, TVS；Described current limiter can
To be one of electronic devices such as resistance, inductance, electric capacity or by the circuit of a combination thereof；Described overcurrent protective device can be molten
Disconnected device or chopper.
Fig. 2 is the principle schematic that Fig. 1 (first embodiment) is corresponding, depicts reset switch (13) and judgment means in figure
(6) built-in data processing unit (5), described reset switch (13) can make normally opened contact (8) recover normally open,
Aa ' is the input of judgment means, and bb ' is the outfan of judgment means.
Fig. 3 is this Novel electric surge protector the second embodiment principle schematic, does not has stream to protect in the surge protector of this embodiment
Protection unit (4), only include surge release path (1), current sensor (2), lightning protection component (3), judgment means (6),
Actuating mechanism (7), normally opened contact (8), current limiter (9), thermel protection device (10), reset switch (13), wherein aa '
Being the input of judgment means, bb ' is the outfan of judgment means.Because surge protector is in use, without built-in
Overcurrent protective device, then rear end must concatenate overcurrent protective device, the Novel electric surge protector that therefore the present embodiment describes is having
Power current by time can allow its external overcurrent protective device timely action that surge protector is departed from main circuit.
In embodiment shown in Fig. 4, the component content of this Novel electric surge protector collectively forms this in being arranged on different housings
Bright.Wherein, current sensor (2) and overcurrent protective device (4) are placed in same housing, lightning protection component (3), judgement dress
Put (6), actuating mechanism (7), normally opened contact (8), current limiter (9), thermel protection device (10), reset switch (13) are put
In same housing, wherein aa ' is the input of judgment means, and bb ' is the outfan of judgment means.
Fig. 5 is protected effect schematic diagram of the present invention.Power frequency short circuit current can be divided into three parts: little power frequency short circuit current, refers to heat
The current range that protection device can start；Big power frequency short circuit current, refers to the current range that overcurrent protective device can start；And
Marginal, be also the action blind area of power frequency short circuit current of existing surge protector protection device, abbreviation action blind area.
In Fig. 1, embodiment illustrated in fig. 2, the lightning protection component (3) of this Novel electric surge protector, current sensor (2), excessively stream
Protection device (4), thermel protection device (10), current limiter (9), judgment means (6), actuating mechanism (7), normally opened contact (8),
Reset switch (13) is integrated in one, and is loaded on a housing, when meeting electrical equipment to surge protector discharge capacity, response
Between and the requirement of three indexs of voltage protection level, enhance the reliability of equipment, in Fig. 3, embodiment illustrated in fig. 4, this is the most novel
The composition of surge protector is encapsulated in different modules to combine and collectively forms the present invention, it is simple to installs and uses, enhances
Practicality.
Utilize technical scheme, reach corresponding technique effect, or under the design philosophy without departing from the present invention
Technical scheme equivalents, all within protection scope of the present invention.
Claims (10)
1. a Novel electric surge protector, including lightning protection component, overcurrent protective device, thermel protection device and shell, described anti-
Thunder element and overcurrent protective device surge in series are released path, and described thermel protection device is positioned on lightning protection component electrode, its
Be characterised by: this Novel electric surge protector also include current sensor, current limiter, judgment means, actuating mechanism, normally opened touch
Point；Described current sensor is sleeved on surge and releases on path, and is connected with judgment means input；Described judgment means is defeated
Go out end to be connected with actuating mechanism；Described actuating mechanism controls normally opened contact action；Described normally opened contact and current limiter are composed in series
Bypass in parallel with lightning protection component.
A kind of Novel electric surge protector the most according to claim 1, it is characterised in that: this Novel electric surge protector is permissible
There is no overcurrent protective device.
A kind of Novel electric surge protector the most according to claim 1 and 2, it is characterised in that: described normally opened contact closes
After, will not open again before overcurrent protective device disconnects.
A kind of Novel electric surge protector the most according to claim 1 and 2, it is characterised in that: described normally opened contact has
Reset switch.
A kind of Novel electric surge protector the most according to claim 1 and 2, it is characterised in that: it is provided with in described judgment means
Power supply and the data processing unit that the physical quantitys such as size of current, direction, rate of change, persistent period can be analyzed, described data
Processing unit is connected with current sensor through judgment means input.
A kind of Novel electric surge protector the most according to claim 1 and 2, it is characterised in that: described actuating mechanism passes through machine
Tool linkage or electromagnetic mode control normally opened contact action.
A kind of Novel electric surge protector the most according to claim 1 and 2, it is characterised in that: described lightning protection component, electric current
Sensor, overcurrent protective device, thermel protection device, current limiter, judgment means, actuating mechanism, normally opened contact may be located at
Same housing, it is also possible to be installed on different housings or be encapsulated in different modules and combine.
A kind of Novel electric surge protector the most according to claim 1 and 2, it is characterised in that: described current limiter can be
One of electronic devices such as resistance, inductance, electric capacity or by the circuit of a combination thereof.
A kind of Novel electric surge protector the most according to claim 1 and 2, it is characterised in that: described overcurrent protective device
Can be fuse or chopper.
A kind of Novel electric surge protector the most according to claim 1 and 2, it is characterised in that: described lightning protection component can
To be one or a combination set of electronic devices such as varistor, discharge tube, TVS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410659993.3A CN106067669A (en) | 2014-11-08 | 2014-11-08 | A kind of Novel electric surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410659993.3A CN106067669A (en) | 2014-11-08 | 2014-11-08 | A kind of Novel electric surge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106067669A true CN106067669A (en) | 2016-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410659993.3A Pending CN106067669A (en) | 2014-11-08 | 2014-11-08 | A kind of Novel electric surge protector |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0860927A1 (en) * | 1997-02-12 | 1998-08-26 | Felten & Guilleaume Austria AG | Protection circuit arrangement for surge arrester |
| US6876533B1 (en) * | 2002-06-28 | 2005-04-05 | A.C. Data Systems Of Idaho, Inc. | Surge suppressor enclosure and fusing system |
| CN101499653A (en) * | 2008-11-07 | 2009-08-05 | 中国电力科学研究院 | Method for protecting electrical appliance by over-current side path |
| CN103474952A (en) * | 2013-09-24 | 2013-12-25 | 武汉微创元电子科技有限责任公司 | Short-circuit protection device for power frequency current and lightning surge automatic selection channel |
| CN103779857A (en) * | 2012-10-24 | 2014-05-07 | 孙巍巍 | Novel surge protection device |
| CN103855695A (en) * | 2012-12-05 | 2014-06-11 | 孙巍巍 | Novel surge protection device |
| CN204391717U (en) * | 2014-11-08 | 2015-06-10 | 孙麓轩 | A kind of Novel electric surge protector |
-
2014
- 2014-11-08 CN CN201410659993.3A patent/CN106067669A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0860927A1 (en) * | 1997-02-12 | 1998-08-26 | Felten & Guilleaume Austria AG | Protection circuit arrangement for surge arrester |
| US6876533B1 (en) * | 2002-06-28 | 2005-04-05 | A.C. Data Systems Of Idaho, Inc. | Surge suppressor enclosure and fusing system |
| CN101499653A (en) * | 2008-11-07 | 2009-08-05 | 中国电力科学研究院 | Method for protecting electrical appliance by over-current side path |
| CN103779857A (en) * | 2012-10-24 | 2014-05-07 | 孙巍巍 | Novel surge protection device |
| CN103855695A (en) * | 2012-12-05 | 2014-06-11 | 孙巍巍 | Novel surge protection device |
| CN103474952A (en) * | 2013-09-24 | 2013-12-25 | 武汉微创元电子科技有限责任公司 | Short-circuit protection device for power frequency current and lightning surge automatic selection channel |
| CN204391717U (en) * | 2014-11-08 | 2015-06-10 | 孙麓轩 | A kind of Novel electric surge protector |
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Application publication date: 20161102 |