CN204391728U - A kind of Novel electric surge protector - Google Patents
A kind of Novel electric surge protector Download PDFInfo
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- CN204391728U CN204391728U CN201420709142.0U CN201420709142U CN204391728U CN 204391728 U CN204391728 U CN 204391728U CN 201420709142 U CN201420709142 U CN 201420709142U CN 204391728 U CN204391728 U CN 204391728U
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- surge protector
- novel electric
- overcurrent protective
- surge
- lightning protection
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Abstract
The utility model relates to a kind of Novel electric surge protector, comprise 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; This Novel electric surge protector also comprises normally-closed contact, force detector, signal processing apparatus, measure loop, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear; Described normally-closed contact is arranged in surge and releases path, connects with lightning protection component and overcurrent protective device; Described force detector is connected with signal processing apparatus, and signal processing apparatus is connected with electromagnetism actuating mechanism by measure loop; Described electromagnetism action mechanism controls buffer displacement shell fragment motion; Described buffer displacement shell fragment is connected with inertial device; Described inertial device controls normally-closed contact action through link gear.This Novel electric surge protector solves the action blind zone problem of existing thermel protection device and overcurrent protective device at all.
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, 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 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.
Prior art " checkout gear of device of surge protector " (patent No.: 200910069431.2) and " a kind of on-Line Monitor Device of Surge Protector " (patent No.: 200910069594.0) proposes two kinds are detected the state of device of surge protector method by measuring electrodynamic mode.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 action 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, power current overcurrent protective device and thermel protection device being existed to action blind area 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, the basic action blind zone problem solving existing thermel protection device and overcurrent protective device.
The utility model is by the following technical solutions: the utility model is for the surge protector in power electronic circuits system, this surge protector comprises lightning protection component, overcurrent protective device, thermel protection device and shell, described lightning protection component and overcurrent protective device series connection, form surge to release path, described thermel protection device is positioned on lightning protection component electrode, it is characterized in that: this Novel electric surge protector also comprises normally-closed contact, force detector, signal processing apparatus, measure loop, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear; Described normally-closed contact is arranged in surge and releases path, connects with lightning protection component and overcurrent protective device; Described force detector is connected with signal processing apparatus, and signal processing apparatus is connected with electromagnetism actuating mechanism by measure loop; Described electromagnetism action mechanism controls buffer displacement shell fragment motion; Described buffer displacement shell fragment is connected with inertial device; Described inertial device controls normally-closed contact action through link gear.
Described force detector is arranged on surge and releases path side, isolates with surge path of releasing.Described normally-closed contact also has reset switch.Described lightning protection component, comprises piezo-resistance, discharge tube, TVS one or a combination set of; Described overcurrent protective device can be fuse or circuit breaker; Described inertial device is flying wheel or weight or damping gear or air valve or delay circuit, just can move when the power continued.
Described force detector comprises power supply, measuring circuit, insulating element, force snesor, and measuring circuit provides electric energy by power supply, has lasting single direction electric current 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 signal processing apparatus; Described measuring circuit and surge are released the parallel placement of path.The utility model utilizes two parallel conductor electric currents attracting in the same way, incorgruous principle of repelling each other, when there being electric current to flow through on path is released in surge, it must produce electric power (comprising suction and repulsion) to charged measuring circuit, and the size of lightning surge 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, the rate of change in direction is also completely different, force snesor is measured the different electric power that measuring circuit produces by insulating element, and then be converted into different current signals and export to signal processing apparatus, by the conversion of signal processing apparatus, judge and amplify, current signal is inputed to electromagnetism actuating mechanism by measure loop, electromagnetism actuating mechanism is caused to produce different actions.Only have when power frequency short circuit current flow continuously through surge release path time, the electric power information that measuring circuit produces exports to signal processing apparatus by force snesor, be enough to allow signal processing apparatus export and make the push rod of electromagnetism actuating mechanism continue the electric current ejected, thus the push rod of electromagnetism actuating mechanism continues to promote inertia displacement shell fragment, causes inertial device to move; Lightning surge is exceedingly fast due to time of origin, its electric power that measuring circuit is produced is different from the electric power that power frequency short circuit current produces at measuring circuit, this electric power information is not enough to make signal processing apparatus export the electric current continued, cause the push rod of electromagnetism actuating mechanism only can eject instantaneously and set back, inertial device can not be driven due to its effect of inertia.
The working method of this Novel electric surge protector: when lightning current flows through lightning protection component, time is very short, electric current is released rapidly, electromagnetism actuating mechanism push rod ejects rapidly and recovers, inertial device keeps motionless state due to effect of inertia, link gear can not be driven to open surge to release the normally-closed contact of path, thus guarantee that lightning current is released smoothly, when lightning protection component deterioration power frequency leakage current reaches certain value, lightning protection component shell temperature also rises to certain altitude, and the intensification caused due to power frequency leakage current is the process of a slow gradual change, and thermel protection device will start, and disconnect at lightning protection component electrode place, when the power current that power system failure or other reasons cause flows through lightning protection component, electromagnetism actuating mechanism makes push rod continue to eject under the effect of electromagnetic force, push rod promotes buffer displacement shell fragment, inertial device can not rotate along buffer displacement shell fragment force direction due to effect of inertia, but now short circuit current does not disappear, electromagnetism actuating mechanism push rod still heads on buffer displacement shell fragment, after waiting for time delay Millisecond Δ t, inertial device rotates counterclockwise rapidly, drive link gear to open surge to release the normally-closed contact of path, thus the lightning protection component being about to damage is departed from from main circuit.
Of the present utility modelly to be characterised in that:
1. this Novel electric surge protector is connected normally-closed contact in path is released in surge; the current type that surge is released in path is judged by force detector, signal processing apparatus, measure loop, electromagnetism actuating mechanism, inertial device; thus open by link gear the normally-closed contact that surge releases in path when power current flows through, solve the action blind zone problem of thermel protection device and overcurrent protective device.
2. the lightning protection component of this Novel electric surge protector and force detector, signal processing apparatus, measure loop, overcurrent protective device, thermel protection device, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear, normally-closed contact, reset switch 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 installed on different housings or be encapsulated in different modules and combine, be convenient to install and use.
3. this Novel electric surge protector can not have overcurrent protective device.
4. the force detector of this Novel electric surge protector is arranged on surge and releases path side, isolates with surge path of releasing; Force detector comprises power supply, measuring circuit, insulating element, force snesor, and measuring circuit provides electric energy by power supply, has lasting single direction electric current 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 signal processing apparatus; Described measuring circuit and surge are released the parallel placement of path.
5. the force detector of this Novel electric surge protector is installed on surge and releases path side, isolates, not affecting surge and normally release, 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.
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, 0 is push rod, and 1 is the first terminals, and 2 is normally-closed contacts; 3 is force detectors, and 3-1 is measuring circuit, and 3-2 is power supply, and 3-3 is force snesor; 3-4 is insulating element, and 4 is electromagnetism actuating mechanisms, and 5 is second terminals, and 6 is overcurrent protective devices; 7 is lightning protection components, and 8 is buffer displacement shell fragments, and 9 is inertial devices, and 10 is that surge is released path; 11 is thermel protection devices, and 12 is measure loop, and 13 is shells; 14 is link gears, and 15 is signal processing apparatus, and 16 is reset switches.
Fig. 1 is the first example structure schematic diagram of the present utility model, and in figure, streak line is that surge is released path (10), is composed in series by normally-closed contact (2), lightning protection component (7) and overcurrent protective device (6); Black heavy line is measure loop (12), connection signal processing unit (15) and electromagnetism actuating mechanism (4); Described thermel protection device (11) is positioned on lightning protection component (7) electrode; Described force detector (3) is arranged on surge and releases path (10) side, and is connected with signal processing apparatus (15), and signal processing apparatus (15) is connected with electromagnetism actuating mechanism (4); Described signal processing apparatus (15) built-in power; The push rod (0) of described electromagnetism actuating mechanism (4) can promote buffer displacement shell fragment (8); Described buffer displacement shell fragment (8) is connected with inertial device (9); Normally-closed contact (2) action is controlled through link gear (14) after described inertial device (9) rotates.In the present embodiment, inertial device (9) is flying wheel.The power that flying wheel is only continued just can be rotated, namely the instantaneous ejection of push rod (0) that lightning surge causes is regained and can not be promoted flying wheel rotation, the push rod (0) that lasting power current causes continues ejection just can promote flying wheel rotation, thus drives link gear (14) to open normally-closed contact (2).Described normally-closed contact (2) has reset switch, and reset switch (16) does not draw in this figure.
The working method of the present embodiment: when lightning current flows through lightning protection component (7), electromagnetism actuating mechanism (4) push rod (0) rapidly ejection recovers again, inertial device (9) keeps motionless state due to effect of inertia, link gear (14) can not be driven to open surge to release the normally-closed contact (2) of path (10), thus guarantee that lightning current is released smoothly; When the deteriorated power frequency leakage current of lightning protection component (7) reaches certain value, thermel protection device (11) will start, and disconnect at lightning protection component (7) electrode place; When the power current in the action blind area that power system failure or other reasons cause flows through lightning protection component (7), electromagnetism actuating mechanism (4) makes push rod (0) continue to eject under the effect of electromagnetic force, push rod promotes buffer displacement shell fragment (8), inertial device (9) rotates counterclockwise, drive link gear (14) to open surge to release the normally-closed contact (2) of path (10), thus the lightning protection component being about to damage is departed from from main circuit.
Fig. 2 is the inside enlarged drawing of force detector of the present utility model, and measuring circuit (3-1) provides electric energy by power supply (3-2), has lasting single direction electric current in measuring circuit; One end of insulating element (3-4) is connected with measuring circuit (3-1), and the other end is connected with force snesor (3-3), and the output of force snesor (3-3) is connected with signal processing apparatus (15); Described measuring circuit (3-1) and surge are released path (10) parallel placement.The utility model utilizes two parallel conductor electric currents attracting in the same way, incorgruous principle of repelling each other, when there being electric current to flow through on path is released in surge, it must produce electric power (comprising suction and repulsion) to charged measuring circuit, and the size of lightning surge 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, the rate of change in direction is also completely different, force snesor (3-3) is measured the upper different electric power produced of measuring circuit (3-1) by insulating element (3-4), and then be converted into different current signals and export to signal processing apparatus (15), by the conversion of signal processing apparatus (15), judge and amplify, current signal is inputed to electromagnetism actuating mechanism (4), electromagnetism actuating mechanism (4) is caused to produce different actions.
Fig. 3 is principle schematic corresponding to Fig. 1 first embodiment, wherein inertia displacement shell fragment (8) and link gear (14) represented by dashed line, reset switch (16) can pass through inertial device (9) control normally-closed contact (2) recover closure state.
Fig. 4 is this Novel electric surge protector second embodiment principle schematic, overcurrent protective device (6) is not had in the surge protector of this embodiment, only comprise surge to release path (10) and force detector (3), signal processing apparatus (15), measure loop (12), thermel protection device (11), electromagnetism actuating mechanism (4), elastic displacement shell fragment (8), inertial device (9), link gear (14), reset switch (16), wherein inertia displacement shell fragment (8) and link gear (16) represented by dashed line, reset switch (16) can pass through inertial device (9) and control normally-closed contact (2) recovery closure state.Because surge protector in use; if inside does not have 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, thus surge protector is departed from main circuit.
Fig. 5 is this Novel electric surge protector the 3rd embodiment principle schematic; in this embodiment, force detector (3), signal processing apparatus (15) are positioned at another one housing with overcurrent protective device (6); wherein inertia displacement shell fragment (8) and link gear (15) dotted line, reset switch (16) can pass through inertial device (9) and control normally-closed contact (2) recovery closure state.
Fig. 1, Fig. 3 are lightning protection components (7) with force detector (3), signal processing apparatus (15), measure loop (12), overcurrent protective device (6), thermel protection device (11), buffer displacement shell fragment (8), inertial device (9), electromagnetism actuating mechanism (4), link gear (14), normally-closed contact (2), reset switch (16) accessible site in the embodiment of one; Fig. 4, Fig. 5 are that lightning protection component (7) also can be installed on different housings from force detector (3), signal processing apparatus (15), measure loop (12), overcurrent protective device (6), thermel protection device (11), buffer displacement shell fragment (8), inertial device (9), electromagnetism actuating mechanism (4), link gear (14), normally-closed contact (2), reset switch (16) or be encapsulated in the embodiment combined in different modules.
Fig. 6 is the utility model protected effect schematic diagram, power frequency short circuit current is divided into three parts: little power 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; Marginal, be the power frequency short circuit current action blind area 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 series connection, form surge to release path, described thermel protection device is positioned on lightning protection component electrode, it is characterized in that: this Novel electric surge protector also comprises normally-closed contact, force detector, signal processing apparatus, measure loop, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear; Described normally-closed contact is arranged in surge and releases path, connects with lightning protection component and overcurrent protective device; Described force detector is connected with signal processing apparatus, and signal processing apparatus is connected with electromagnetism actuating mechanism by measure loop; Described electromagnetism action mechanism controls buffer displacement shell fragment motion; Described buffer displacement shell fragment is connected with inertial device; Described inertial device controls normally-closed contact action through link gear.
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 is installed on surge and releases path side, insulate with surge path of releasing.
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, measuring circuit provides electric energy by power supply, has lasting single direction electric current 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 signal processing apparatus; 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 normally-closed contact has reset switch.
6. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described inertial device is flying wheel or weight or damping gear or air valve or delay circuit.
7. a kind of Novel electric surge protector according to claim 1 and 2; it is characterized in that: described lightning protection component and force detector, signal processing apparatus, measure loop, overcurrent protective device, thermel protection device, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear, normally-closed contact, reset switch 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 |
|---|---|---|---|
| CN201420709142.0U CN204391728U (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 |
|---|---|---|---|
| CN201420709142.0U CN204391728U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
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| CN204391728U true CN204391728U (en) | 2015-06-10 |
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| CN201420709142.0U Active CN204391728U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656007A (en) * | 2014-11-10 | 2016-06-08 | 孙麓轩 | Novel surge protector |
| CN106329504A (en) * | 2015-06-30 | 2017-01-11 | 施耐德电器工业公司 | Backup protection circuit breaker of surge protector and application method of backup protection circuit breaker |
-
2014
- 2014-11-10 CN CN201420709142.0U patent/CN204391728U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656007A (en) * | 2014-11-10 | 2016-06-08 | 孙麓轩 | Novel surge protector |
| CN106329504A (en) * | 2015-06-30 | 2017-01-11 | 施耐德电器工业公司 | Backup protection circuit breaker of surge protector and application method of backup protection circuit breaker |
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