CN204538681U - A kind of Novel electric surge protector - Google Patents
A kind of Novel electric surge protector Download PDFInfo
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- CN204538681U CN204538681U CN201420709065.9U CN201420709065U CN204538681U CN 204538681 U CN204538681 U CN 204538681U CN 201420709065 U CN201420709065 U CN 201420709065U CN 204538681 U CN204538681 U CN 204538681U
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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 force detector, judgment means, disjunction actuator, section breaker.Described force detector 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 series at surge and release in path.The problem of action blind area is there is in the protective device that the utility model solves existing surge protector at all 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, effective protection can be played for slow temperature-rise period, but 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 do not occur disjunction perform, 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 disjunction and perform 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 disjunction and perform 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 damaged all can not be departed from main circuit by thermel protection device and overcurrent protective device, thus occurs serious potential safety hazard.
200910069431.2) and " a kind of on-Line Monitor Device of Surge Protector " (patent No.: 200910069594.0) propose two kinds are detected the state of device of surge protector method by measuring electrodynamic mode prior art " checkout gear of the device of surge protector " (patent No.:.Wherein " checkout gear of device of surge protector " (patent No.: 200910069431.2) propose metal spring leaf be arranged on device of surge protector side or connected by wire; pressure sensor is utilized to measure the distortion of metal spring leaf; thus learn the state of device of surge protector; this method pressure sensor is connected with nothing between metal spring leaf; measure inaccuracy; moreover the mode of texturing of metal spring leaf is single, also make the signal source of pressure sensor senses very faint." a kind of on-Line Monitor Device of Surge Protector " (patent No.: 200910069594.0) propose hardware to connect with surge suppression device, the shape of hardware is bending, when electric current is by surge suppression device and hardware, electric current makes the hardware bent become straight effect, consequent electric power passes through pressure sensor senses, and then learn the information of electric current and the degradation of surge suppression device, this method of measurement certainty of measurement is higher, but hardware is sealed in surge passage, the ability of the surge current of releasing on surge suppression device is brought very large impact, Surge Protector residual voltage is caused to raise, reduce the level of protection to its claimed equipment.And, in these two prior aries, detection for electric power physical quantity is only limitted to understand the current information flowing through device of surge protector or surge suppression device, thus understand the state of device of surge protector or surge suppression device, my problem of above-mentioned " overcurrent protective device of existing SPD and thermel protection device exist serious disjunction and perform blind area " is not solved, I will revise the deficiency of this electric power method of testing and innovate, thus the current type in surge protector circuit can be judged, the power current that disjunction performs blind area is existed to overcurrent protective device and thermel protection device and carries out instant disjunction.
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 at all 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 surge in series are released path, and described thermel protection device is positioned on lightning protection component electrode.The utility model also comprises force detector, judgment means, disjunction actuator, section breaker; Described force detector is arranged on surge and releases near 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 series at surge and release in path.
The actuator of disjunction described in the utility model controls section breaker 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 of the present utility model is force detector and judgment means.Described force detector comprises power supply, measuring circuit, insulating element and force snesor, and power supply provides electric energy for measuring circuit, has the electric current of lasting single direction in measuring circuit; One end of insulating element is connected with measuring circuit, and the other end is connected with force snesor, and the output of force snesor is connected with judgment means; Described measuring circuit and surge are released the parallel placement of path.Described judgment means built-in power and data processing unit.
The utility model make use of attracting in the same way, the incorgruous principle of repelling each other of two parallel conductor electric currents.When surge release path have electric current to flow through time, because the measuring circuit in described force detector and surge are released, path is parallel placement, and in measuring circuit, have the electric current of lasting single direction, attracting in the same way according to two parallel conductor electric currents, incorgruous principle of repelling each other, charged measuring circuit must produce electric power (comprising suction and repulsion), and the size of surge current and power current, direction, rate of change, the parameters such as duration are different, cause its flow through surge release path time to measuring circuit produce electrodynamic size, direction, rate of change is also completely different, force snesor is measured the different electric power that measuring circuit produces by insulating element, and be translated into different current signals and export to judgment means, judgment means is amplified current signal and is judged, and control disjunction actuator according to judged result, to reach the object of protection.
The working method of this Novel electric surge protector:
When judged result is less power current, disjunction actuator is failure to actuate, section breaker does not disconnect, and is protected by thermel protection device; When judged result is the power current in action blind area, the action of disjunction actuator, section breaker disconnect, thus make surge release path disconnect; When judged result is the power current being greater than action blind area, disjunction actuator is failure to actuate, section breaker does not disconnect, and is directly protected by overcurrent protective device; When judged result is surge current, normally released by surge 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 force detector, judgment means, disjunction actuator and section breaker, solves 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, force detector, 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, enhance practicality.
3. the force detector in this Novel electric surge protector is arranged on surge and releases near path, isolates with surge path of releasing; Force detector comprises power supply, measuring circuit, insulating element, force snesor, and power supply provides electric energy for measuring circuit, has the electric current of lasting single direction in measuring circuit; One end of insulating element is connected with measuring circuit, and the other end is connected with force snesor, and the output of force snesor is connected with judgment means; Described measuring circuit and surge are released the parallel placement of path.
4. the force detector of this Novel electric surge protector is installed on surge and releases path side, insulate, not affecting normally releasing of surge, not affecting surge protector on needing the level of protection of proterctive equipment with surge path of releasing; Described force detector built-in power, measuring circuit, insulating element, force snesor, force snesor directly measures the electric power on measuring circuit by insulating element, certainty of measurement is high, and measurement result is accurate.
5. 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.
6. this Novel electric surge protector can not have overcurrent protective device.
Accompanying drawing explanation
Fig. 1 is the first example structure schematic diagram of the present utility model.
Fig. 2 is the inside enlarged drawing of force detector of the present utility model.
Fig. 3 is the first embodiment principle schematic of the present utility model.
Fig. 4 is the second embodiment principle schematic of the present utility model.
Fig. 5 is the 3rd embodiment principle schematic of the present utility model.
Fig. 6 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 force detectors; 2-1 is measuring circuit, and 2-2 is power supply, and 2-3 is force snesor; 2-4 is insulating element, and 3 is lightning protection components, and 4 is overcurrent protective devices; 5 is data processing units, and 6 is judgment means, and 7 is disjunction actuators; 8 is section breakers, and 9 is thermel protection devices, and 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 the first example structure schematic diagram of the present utility model, 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 thermel protection device (9) is positioned on lightning protection component (3) electrode; Described force detector (2) is installed on surge and releases near path (1), insulate with surge path (1) of releasing, measuring circuit (2-1) in force detector (2) and surge are released path (1) parallel placement, and force detector (2) and judgment means (6) input (aa ') be connected; Described judgment means (6) output (bb ') be connected with disjunction actuator (7); Described disjunction actuator (7) controls section breaker (8); Described section breaker (8) is arranged on surge and releases on path (1).
When having electric current to flow through on path (1) is released in surge, because the measuring circuit (2-1) in described force detector (2) and surge are released, path (1) is parallel placement, and in measuring circuit (2-1), have the electric current of lasting single direction, attracting in the same way according to two parallel conductor electric currents, incorgruous principle of repelling each other, charged measuring circuit must produce electric power (comprising suction and repulsion), and the size of surge current and power current, direction, rate of change, the parameters such as duration are different, cause its flow through surge release path (1) time electrodynamic size that measuring circuit (2-1) is produced, direction, rate of change is also completely different, force snesor (2-3) is measured the upper different electric power produced of measuring circuit (2-1) by insulating element (2-4), and be translated into different current signals and export to judgment means (6), judgment means (6) is amplified current signal and is judged, and control disjunction actuator (7) according to judged result, thus control section breaker (8) action, to reach the object of protection.
There will be following four kinds of situations: when judged result is for less power current, disjunction actuator (7) is failure to actuate, section breaker (8) does not disconnect, and is protected by thermel protection device (9) in process; When judged result be disjunction perform in blind area power current time, disjunction actuator (7) action, section breaker (8) disconnect, and described surge path (1) of releasing disconnects; When judged result is the power current being greater than disjunction execution blind area, disjunction actuator (7) is failure to actuate, section breaker (8) does not disconnect, and is directly protected by overcurrent protective device (4); When judged result is surge current, normally released by surge 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 (actuator of disjunction described in embodiment illustrated in fig. 1 (7) controls section breaker by Electromagnetic Control 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 inside enlarged drawing of force detector of the present utility model.Described force detector (2) comprises power supply (2-2), measuring circuit (2-1), insulating element (2-4), force snesor (2-3), wherein, power supply (2-2) provides electric energy for measuring circuit (2-1), has the electric current of lasting single direction in measuring circuit (2-1); One end of insulating element (2-4) is connected with measuring circuit (2-1), and the other end is connected with force snesor (2-3), and the output of force snesor (2-3) is connected with judgment means (6); Described measuring circuit (2-1) and surge are released path (1) parallel placement.
Fig. 3 is the principle schematic of the first embodiment of the present utility model, corresponding with Fig. 1 (the first example structure schematic diagram).The reset unit (11) of section breaker (8) and the built-in data processing unit (5) of judgment means (6) is depicted, the input that aa ' is judgment means, the output that bb ' is judgment means in figure.。
Fig. 4 is the 3rd embodiment principle schematic of the present utility model; there is no overcurrent protective device (4) in the surge protector of this embodiment, only comprise surge and to release path (1), force detector (2), lightning protection component (3), judgment means (6), disjunction actuator (7), section breaker (8), thermel protection device (9).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 the timely disjunction of its external overcurrent protective device can be allowed to perform and surge protector is departed from main circuit.
Fig. 5 is the 4th embodiment principle schematic of the present utility model.In this embodiment, the component content of this Novel electric surge protector is arranged in different housings and jointly forms the utility model.Wherein, overcurrent protective device (4) and force detector (2) are placed in same housing, and lightning protection component (3), judgment means (6), disjunction actuator (7), section breaker (8), thermel protection device (9) are placed in same housing.
Fig. 1, in embodiment illustrated in fig. 3, the lightning protection component (3) of this Novel electric surge protector, force detector (2), overcurrent protective device (4), judgment means (6), disjunction actuator (7), section breaker (8), thermel protection device (9) 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. 4, the composition of middle Novel electric surge protector embodiment illustrated in fig. 5 is encapsulated in different modules to combine and jointly forms the utility model, be convenient to install and use, enhance practicality.
Fig. 6 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 existing surge protector protective device power frequency short circuit current disjunction perform blind area, be called for short disjunction perform 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 (10)
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 force detector, judgment means, disjunction actuator, section breaker; Described force detector is arranged on surge and releases near 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 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 force detector and surge path of releasing insulate.
4. a kind of Novel electric surge protector according to claim 1 and 2, it is characterized in that: described force detector comprises power supply, measuring circuit, insulating element, force snesor, power supply provides electric energy for measuring circuit, has the electric current of lasting single direction in measuring circuit; One end of insulating element is connected with measuring circuit, and the other end is connected with force snesor, and the output of force snesor is connected with judgment means; Described measuring circuit and surge are released the parallel placement of path.
5. 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.
6. a kind of Novel electric surge protector according to claim 1 and 2; it is characterized in that: be provided with in described judgment means power supply and can analytic signal size, direction, rate of change, the data processing unit of duration, described data processing unit is connected with force detector through judgment means input.
7. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described disjunction actuator controls section breaker by the mode of mechanical linkage or electromagnetic mode or the two combination.
8. a kind of Novel electric surge protector according to claim 1 and 2; it is characterized in that: described lightning protection component, force detector, 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.
9. 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.
10. 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420709065.9U CN204538681U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420709065.9U CN204538681U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
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| CN204538681U true CN204538681U (en) | 2015-08-05 |
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| CN201420709065.9U Active CN204538681U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656014A (en) * | 2014-11-10 | 2016-06-08 | 孙麓轩 | Novel surge protector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656014A (en) * | 2014-11-10 | 2016-06-08 | 孙麓轩 | Novel surge protector |
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