CN204391722U - A kind of Novel electric surge protector - Google Patents
A kind of Novel electric surge protector Download PDFInfo
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- CN204391722U CN204391722U CN201420708953.9U CN201420708953U CN204391722U CN 204391722 U CN204391722 U CN 204391722U CN 201420708953 U CN201420708953 U CN 201420708953U CN 204391722 U CN204391722 U CN 204391722U
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- surge protector
- judgment means
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- magnetic field
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Abstract
The utility model relates to a kind of Novel electric surge protector, comprises lightning protection component, overcurrent protective device, thermel protection device and shell, and described lightning protection component and overcurrent protective device surge in series are released path, and described thermel protection device is positioned on lightning protection component electrode; This Novel electric surge protector also comprises magnetic field induction device, judgment means, disjunction actuator, section breaker.Described magnetic field induction device is arranged on surge and releases around path, and is connected with judgment means input; Described judgment means output is connected with disjunction actuator; Described disjunction actuating mechanism controls section breaker; Described section breaker is normally closed and be connected on surge and release in path.The problem of action blind area is there is in the protective device that the utility model efficiently solves existing surge protector to power current.
Description
Technical field
The utility model belongs to the surge protection technical field of electronic electric equipment.
Background technology
Thunder and lightning aloft to be discharged a kind of special weather phenomenon caused by charged cloud.Thunder and lightning is the major reason causing electronic equipment to damage, and it threatens the safe and stable operation of the every field electronic informations such as building, railway, civil aviaton, communication, industry control, military affairs.It is one of important measures of lightning protection that the metallic circuits such as the power line be connected with electronic equipment, holding wire and control line install surge protector.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 brings hidden danger to the safety of institute's proterctive equipment.
Present stage SPD has Thermal protection and overcurrent protection (internal or external) two kinds of protective devices in use usually; thermel protection device is used for protecting lightning protection component deterioration heating; overcurrent protective device is used for the lightning protection component puncture short preventing transient over-current or overvoltage from causing; simultaneously overcurrent protection as a kind of backup protection mode of Thermal protection, so effective protective action can be played in most of occasion.
But, because heat transfer is a relatively slow process, the sensitivity of thermel protection device is low, still effective protection can be played for slow temperature-rise period, and for low (in) steep temperature rise situation owing to causing under sustained over voltage condition in pressing system, Thermal protection trip gear can not this process of perception in time and action does not occur, cause lightning protection component breakdown, power current enters SPD circuit, when this power frequency electric flow valuve does not reach the initiation value of overcurrent protective device, also can not there is action in overcurrent protective device, thus cause SPD on fire; If the initiation value of overcurrent protective device is selected little, though can start, be difficult to resist the impact of lightning current, cause SPD cannot normally to release lightning current.
In sum; there is serious action blind area in the overcurrent protective device of existing SPD and thermel protection device; SPD is by when the electric current in this region, and the SPD that thermel protection device and overcurrent protective device all can not be about to damage departs from main circuit, thus occurs serious potential safety hazard.
Utility model content
In order to effectively solve the above prior-art problems; the utility model proposes a kind of easy for installation and Novel electric surge protector for power-supply system of dependable performance, there is the problem of action blind area in the protective device efficiently solving existing surge protector to power current.
The utility model is by the following technical solutions: the utility model is for the surge protector in power electronic circuits system, comprises lightning protection component, overcurrent protective device, thermel protection device and shell; Described lightning protection component and overcurrent protective device series connection, form surge and to release path, described thermel protection device is positioned on lightning protection component electrode.The utility model also comprises magnetic field induction device, judgment means, disjunction actuator, section breaker; Described magnetic field induction device is arranged on surge and releases around path, and is connected with judgment means input; Described judgment means output is connected with disjunction actuator; The action of described disjunction actuating mechanism controls section breaker; Described section breaker is normally closed and be series at surge and release in path.
The built-in power of judgment means described in the utility model and data processing unit; Described break-up device controls section breaker action by the mode of mechanical linkage or electromagnetic mode or the two combination; Described section breaker has the reset unit that it can be made to recover normally off; Described overcurrent protective device can be fuse or circuit breaker; Described lightning protection component, comprises piezo-resistance, discharge tube, TVS one or a combination set of.
Core mechanism of the present utility model is magnetic field induction device and judgment means.When there being electric current to flow through on path is released in surge, magnetic field induction device can sense the magnetic field that this electric current produces, and the field signal sensed is transferred to the built-in data processing unit of judgment means by the input of judgment means, described data processing unit or the physical quantity such as size, direction, rate of change, duration according to magnetic field judge the type (magnetic field that the power current in surge current, little power current, action blind area, the power current being greater than action blind area produce is different) in magnetic field; Or judge according to physical quantitys such as the size of this electric current, direction, rate of change, duration the type flowing through the electric current of surge leadage circuit after field signal is converted to current signal.If the magnetic field (or for less power current) that judged result is less power current to be produced, then disjunction actuator is failure to actuate, section breaker do not disconnect, and is protected by thermel protection device; The magnetic field that if judged result is the power current in action blind area to be produced (or being the power current in action blind area), then disjunction actuator action, section breaker disconnect, thus surge is released, path disconnects; If judged result is the magnetic field (or for being greater than the power current of action blind area) that the power current being greater than action blind area produces, then disjunction actuator is failure to actuate, section breaker do not disconnect, and is directly protected by overcurrent protective device; If the magnetic field (or for surge current) that judged result is surge current to be produced, then normally released by lightning protection component and overcurrent protective device surge in series path of releasing.
Of the present utility modelly to be characterised in that:
1. this Novel electric surge protector is provided with section breaker on path is released in surge, by effective cooperation of magnetic field induction device, judgment means, disjunction actuator and section breaker, solve the action blind zone problem of thermel protection device and overcurrent protective device at all;
2. the lightning protection component of this Novel electric surge protector, magnetic field induction device, overcurrent protective device, thermel protection device, judgment means, disjunction actuator, section breaker accessible site are in one, be loaded on housing, meet the requirement of power consumption equipment to surge protector discharge capacity, response time and voltage protection level three indexs, enhance the reliability of equipment, also can be contained in different modules to combine and jointly form the utility model, be convenient to install and use;
3. the disjunction actuator in this Novel electric surge protector is according to the judged result action of judgment means or be failure to actuate, and institute of disjunction actuator energy requirement can be supplied by judgment means, and also configurable independent power supply, also can be supplied by power line;
4. the utility model can not have overcurrent protective device.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the first embodiment principle schematic of the present utility model.
Fig. 3 is the second embodiment principle schematic of the present utility model.
Fig. 4 is the 3rd embodiment principle schematic of the present utility model.
Fig. 5 is the utility model protected effect schematic diagram.
Specific embodiments
Below in conjunction with drawings and Examples, the utility model is further illustrated:
As shown in the figure, 1 is that surge is released path, and 2 is magnetic field induction devices; 3 is lightning protection components, and 4 is overcurrent protective devices, and 5 is data processing units; 6 is judgment means; 7 is disjunction actuators, and 8 is section breakers, and 9 is thermel protection devices; 10 is shells; 11 is reset units of section breaker, and aa ' is the input of judgment means, and bb ' is the output of judgment means.
Fig. 1 is this Novel electric surge protector first embodiment, this Novel electric surge protector has overcurrent protective device (4) in this embodiment, and described lightning protection component (3) and overcurrent protective device (4) surge in series are released path (1); Described magnetic field induction device (2) is arranged on surge and releases path (1) around, and is connected with judgment means (6) input (aa '); Described judgment means (6) output (bb ') be connected with disjunction actuator (7); Described thermel protection device (9) is positioned on lightning protection component (3) electrode.
When having electric current to flow through on path (1) is released in surge, magnetic field induction device (2) can sense the magnetic field that this electric current produces, and the field signal sensed is transferred to the built-in data processing unit (5) of judgment means (6) by the input of judgment means (6) (aa '), data processing unit (5) or the size according to magnetic field, direction, rate of change, the physical quantitys such as duration judge the type (surge current in magnetic field, little power current, power current in action blind area, the magnetic field that the power current being greater than action blind area produces is different), or judge according to physical quantitys such as the size of this electric current, direction, rate of change, duration the type flowing through the electric current of surge leadage circuit after field signal is converted to current signal.If the magnetic field (or for less power current) that judged result is less power current to be produced, then disjunction actuator (7) is failure to actuate, section breaker (8) do not disconnect, and is protected by thermel protection device (9); The magnetic field that if judged result is the power current in action blind area to be produced (or being the power current in action blind area), then disjunction actuator (7) action, section breaker (8) disconnect, thus surge is released, path disconnects; If judged result is the magnetic field (or for being greater than the power current of action blind area) that the power current being greater than action blind area produces, then disjunction actuator (7) is failure to actuate, section breaker (8) do not disconnect, and is directly protected by overcurrent protective device (4); If the magnetic field (or for surge current) that judged result is surge current to be produced, then normally released by lightning protection component (3) and overcurrent protective device (4) surge in series path (1) of releasing.
Described section breaker has the reset unit (illustrating not shown in FIG.) that it can be made to recover normally off; Described disjunction actuator controls section breaker action (actuator of disjunction described in embodiment illustrated in fig. 1 (7) controls section breaker action by electromagnetic mode, and other control mode is not repeated herein) by the mode of mechanical linkage or electromagnetic mode or the two combination.
Described lightning protection component can be electronic devices such as piezo-resistance, discharge tube, TVS one or a combination set of; Described overcurrent protective device can be fuse or circuit breaker.
Fig. 2 is the principle schematic that Fig. 1 (the first embodiment) is corresponding, depicts the reset unit (11) of section breaker (8) and the built-in data processing unit (5) of judgment means (6) in figure; Described data processing unit can field signal be converted to current signal function, magnetic field processed, analyze, also can there is this function and the electric current of conversion is processed, analyzes that (data processing unit in following examples is all identical with the data processing unit in the present embodiment, repeat no more), aa ' is the input of judgment means, and bb ' is the output of judgment means.
Fig. 3 is this Novel electric surge protector second embodiment principle schematic, depicts the reset unit (11) of section breaker (8) and the built-in data processing unit (5) of judgment means (6) in figure.Overcurrent protective device (4) is not had in the surge protector of this embodiment; only comprise surge to release path (1), magnetic field induction device (2), lightning protection component (3), judgment means (6), disjunction actuator (7), section breaker (8), thermel protection device (9); wherein aa ' is the input of judgment means, and bb ' is the output of judgment means.Because surge protector in use; if there is no built-in overcurrent protective device; so rear end must be connected in series overcurrent protective device, therefore the Novel electric surge protector that describes of the present embodiment have power current by time can allow the timely action of its external overcurrent protective device and surge protector is departed from protection circuit.
In embodiment shown in Fig. 4, the component content of this Novel electric surge protector is arranged in different housings and jointly forms the utility model.Wherein, magnetic field induction device (2) and overcurrent protective device (4), be placed in same housing; lightning protection component (3), judgment means (6), disjunction actuator (7), section breaker (8), thermel protection device (9) are placed in same housing; wherein aa ' is the input of judgment means, and bb ' is the output of judgment means.
Fig. 1, in embodiment illustrated in fig. 2, the lightning protection component (3) of this Novel electric surge protector, magnetic field induction device (2), overcurrent protective device (4), thermel protection device (9), judgment means (6), disjunction actuator (7), section breaker (8) is integrated in one, be loaded on a housing, meet power consumption equipment to surge protector discharge capacity, the requirement of response time and voltage protection level three indexs, enhance the reliability of equipment, Fig. 3, the composition of middle Novel electric surge protector embodiment illustrated in fig. 4 is encapsulated in different modules to combine and jointly forms the utility model, be convenient to install and use, enhance practicality.
Fig. 5 is the utility model protected effect schematic diagram.Power frequency short circuit current can be divided into three parts: little power frequency short circuit current, refers to the current range that thermel protection device can start; Large 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 protective device, be called for short action blind area.
Utilize the technical solution of the utility model, reach corresponding technique effect, or not departing from the technical scheme equivalents under design philosophy of the present utility model, all within protection range of the present utility model.
Claims (9)
1. a Novel electric surge protector, comprise lightning protection component, 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, it is characterized in that: this Novel electric surge protector also comprises magnetic field induction device, judgment means, disjunction actuator, section breaker; Described magnetic field induction device is arranged on surge and releases around path, and is connected with judgment means input; Described judgment means output is connected with disjunction actuator; The action of described disjunction actuating mechanism controls section breaker; Described section breaker is normally closed and be series at surge and release in path.
2. a kind of Novel electric surge protector according to claim 1, is characterized in that: this Novel electric surge protector does not have overcurrent protective device.
3. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described section breaker has the reset unit that it can be made to recover normally off.
4. a kind of Novel electric surge protector according to claim 1 and 2; it is characterized in that: be provided with power supply in described judgment means and can analyze the size in magnetic field, direction, rate of change, the data processing unit of duration, described data processing unit is connected with magnetic field induction device through judgment means input.
5. a kind of Novel electric surge protector according to claim 1 and 2; it is characterized in that: be provided with power supply in described judgment means and field signal can be converted to current signal and analyze the size of this electric current, direction, rate of change, the data processing unit of duration, described data processing unit is connected with magnetic field induction device through judgment means input.
6. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described disjunction actuator controls section breaker action by the mode of mechanical linkage or electromagnetic mode or the two combination.
7. a kind of Novel electric surge protector according to claim 1 and 2; it is characterized in that: described lightning protection component, magnetic field induction device, overcurrent protective device, thermel protection device, judgment means, disjunction actuator, section breaker can be positioned at same housing, also can be installed on different housings or be encapsulated in different modules and combine.
8. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described overcurrent protective device can be fuse or circuit breaker.
9. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described lightning protection component can be piezo-resistance, discharge tube, TVS one or a combination set of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708953.9U CN204391722U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708953.9U CN204391722U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
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| Publication Number | Publication Date |
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| CN204391722U true CN204391722U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420708953.9U Active CN204391722U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
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| CN (1) | CN204391722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656001A (en) * | 2014-11-10 | 2016-06-08 | 孙麓轩 | Novel surge protector |
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2014
- 2014-11-10 CN CN201420708953.9U patent/CN204391722U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656001A (en) * | 2014-11-10 | 2016-06-08 | 孙麓轩 | Novel surge protector |
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