CN204391713U - A kind of Novel electric surge protector - Google Patents
A kind of Novel electric surge protector Download PDFInfo
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- CN204391713U CN204391713U CN201420691776.8U CN201420691776U CN204391713U CN 204391713 U CN204391713 U CN 204391713U CN 201420691776 U CN201420691776 U CN 201420691776U CN 204391713 U CN204391713 U CN 204391713U
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- surge protector
- novel electric
- lightning protection
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- signal processing
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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 force detector, signal processing apparatus, flow restricter, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear, normally opened contact; Described force detector is connected with signal processing apparatus, and signal processing apparatus is connected with electromagnetism actuating mechanism; 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 opened contact action through link gear; Described normally opened contact and flow restricter are composed in series bypass, and bypass is connected in parallel on lightning protection component two ends.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 dependable performance, the highly sensitive Novel electric surge protector for power-supply system, 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 force detector, signal processing apparatus, flow restricter, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear, normally opened contact; Described force detector is connected with signal processing apparatus, and signal processing apparatus is connected with electromagnetism actuating mechanism; 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 opened contact action through link gear; Described normally opened contact and flow restricter are composed in series bypass, and bypass is connected in parallel on lightning protection component two ends.
Described force detector is arranged on surge and releases path side, isolates with surge path of releasing.After described normally opened contact is closed, can not open before overcurrent protective device disconnects, described normally opened contact also has reset switch again.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; The circuit that described flow restricter can be one of electronic devices such as resistance, inductance, electric capacity or be combined by it, has the effect of Limited Current; 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 attracting in the same way, the incorgruous principle of repelling each other of two parallel conductor electric currents.When there being electric current to flow through on path is released in surge, 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 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, 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 close bypass normally opened contact, 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, link gear is driven to close bypass normally opened contact, the bypass being now connected in parallel on lightning protection component two ends is switched on, power frequency short circuit current will without lightning protection component, directly arrive overcurrent protective device by bypass, and have time enough to disconnect by overcurrent protective device, 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 by increasing the bypass being connected in parallel on lightning protection component two ends, solves the action blind zone problem of thermel protection device and overcurrent protective device.Bypass is composed in series by normally opened contact and flow plug, normally opened contact controls through link gear, inertial device, buffer displacement shell fragment, buffer displacement shell fragment is by electromagnetism action mechanism controls, the electric current that signal processing apparatus exports is depended in the action of electromagnetism actuating mechanism, the information that the electric current that signal processing apparatus exports exports according to force detector.
2. the lightning protection component of this Novel electric surge protector and force detector, signal processing apparatus, overcurrent protective device, thermel protection device, flow restricter, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear, normally opened contact 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, releasing path every meat, does not affect surge and normally release, not affecting surge protector on needing the level of protection of proterctive equipment with surge; 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, surveys most result 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; 2 is normally opened contacts, and 3 is bypasses, and 4 is flow plugs; 5 is second terminals; 6 is overcurrent protective devices, and 7 is lightning protection components, and 8 is buffer displacement shell fragments; 9 are inertial devices 10 is signal processing apparatus; 11 is thermel protection devices, and 12 is electromagnetism actuating mechanisms, and 13 is link gears; 14 is force detectors; 14-1 is measuring circuit, and 14-2 is power supply, and 14-3 is force snesor; 14-4 is insulating element; 15 is that surge is released path, and 16 is shells, and 17 is reset switches.
Fig. 1 is the first example structure schematic diagram of the present utility model, and in figure, solid black lines is that surge is released path (15), is composed in series by lightning protection component (7) and overcurrent protective device (6); Streak line is bypass (3), and be composed in series by normally opened contact (2) and flow plug (4), described bypass (3) is connected in parallel on lightning protection component (7) two ends; Described thermel protection device (11) is positioned on lightning protection component (7) electrode.Described force detector (14) is arranged on surge and releases path (15) side, and is connected with signal processing apparatus (10), and signal processing apparatus (10) is connected with electromagnetism actuating mechanism (12); Described signal processing apparatus (10) built-in power; The push rod (0) of described electromagnetism actuating mechanism (12) can promote buffer displacement shell fragment (8); Described buffer displacement shell fragment (8) is connected with inertial device (9); Normally opened contact (2) action is controlled through link gear (13) 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 the closed normally opened contact (2) of link gear (13).Described normally opened contact has reset switch, does not draw in detail in this figure.
Fig. 2 is the inside enlarged drawing of force detector of the present utility model, and measuring circuit (14-1) provides electric energy by power supply (14-2), has lasting single direction electric current in measuring circuit; One end of insulating element (14-4) is connected with measuring circuit (14-1), and the other end is connected with force snesor (14-3), and the output of force snesor (14-3) is connected with signal processing apparatus (10); Described measuring circuit (14-1) and surge are released path (15) 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 (14-3) is measured the upper different electric power produced of measuring circuit (14-1) by insulating element (14-4), and then be converted into different current signals and export to signal processing apparatus (10), by the conversion of signal processing apparatus (10), judge and amplify, current signal is inputed to electromagnetism actuating mechanism (12), electromagnetism actuating mechanism (12) 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 (13) represented by dashed line, reset switch (17) can control inertial device (9) makes normally opened contact (2) recover normally open.
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 (15), bypass (3) and force detector (14), signal processing apparatus (10), electromagnetism actuating mechanism (12), thermel protection device (11), elastic displacement shell fragment (8), inertial device (9), link gear (13), wherein inertia displacement shell fragment (8) and link gear (13) represented by dashed line, reset switch (17) can control inertial device (9) makes normally opened contact (2) recover normally open.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 (14), signal processing apparatus (10) are positioned at another one housing with overcurrent protective device (6); wherein inertia displacement shell fragment (8) and link gear (13) represented by dashed line, reset switch (17) can control inertial device (9) makes normally opened contact (2) recover normally open.
Fig. 1, Fig. 3 are lightning protection components (7) with force detector (14), signal processing apparatus (10), overcurrent protective device (6), thermel protection device (11), flow restricter (4), buffer displacement shell fragment (8), inertial device (9), electromagnetism actuating mechanism (12), link gear (13), normally opened contact (2) accessible site in an embodiment of one; Fig. 4, Fig. 5 are that lightning protection component (7) also can be installed on different housings from force detector (14), signal processing apparatus (10), overcurrent protective device (6), thermel protection device (11), flow restricter (4), buffer displacement shell fragment (8), inertial device (9), electromagnetism actuating mechanism (12), link gear (13), normally opened contact (2) 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 (11)
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 force detector, signal processing apparatus, flow restricter, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear, normally opened contact; Described force detector is connected with signal processing apparatus, and signal processing apparatus is connected with electromagnetism actuating mechanism; 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 opened contact action through link gear; Described normally opened contact and flow restricter are composed in series bypass, and bypass is connected in parallel on lightning protection component two ends.
2. a kind of Novel electric surge protector according to claim 1, is characterized in that: this Novel electric surge protector can 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: after described normally opened contact is closed, can not open before overcurrent protective device disconnects again.
6. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described normally opened contact has reset switch.
7. 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.
8. 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, overcurrent protective device, thermel protection device, flow restricter, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear, normally opened contact 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: the circuit that described flow restricter can be one of resistance, inductance, electric capacity or be combined by it.
10. 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.
11. a kind of Novel electric surge protectors 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 |
|---|---|---|---|
| CN201420691776.8U CN204391713U (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 |
|---|---|---|---|
| CN201420691776.8U CN204391713U (en) | 2014-11-08 | 2014-11-08 | A kind of Novel electric surge protector |
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| Publication Number | Publication Date |
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| CN204391713U true CN204391713U (en) | 2015-06-10 |
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| CN201420691776.8U Active CN204391713U (en) | 2014-11-08 | 2014-11-08 | A kind of Novel electric surge protector |
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| CN (1) | CN204391713U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633930A (en) * | 2014-11-08 | 2016-06-01 | 孙麓轩 | Novel surge protector |
| CN114512975A (en) * | 2022-04-19 | 2022-05-17 | 合肥航太电物理技术有限公司 | Multi-channel lightning electromagnetic protection real-time fault monitoring suppressor |
-
2014
- 2014-11-08 CN CN201420691776.8U patent/CN204391713U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633930A (en) * | 2014-11-08 | 2016-06-01 | 孙麓轩 | Novel surge protector |
| CN114512975A (en) * | 2022-04-19 | 2022-05-17 | 合肥航太电物理技术有限公司 | Multi-channel lightning electromagnetic protection real-time fault monitoring suppressor |
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