CN204391709U - A kind of Novel electric surge protector - Google Patents
A kind of Novel electric surge protector Download PDFInfo
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- CN204391709U CN204391709U CN201420691713.2U CN201420691713U CN204391709U CN 204391709 U CN204391709 U CN 204391709U CN 201420691713 U CN201420691713 U CN 201420691713U CN 204391709 U CN204391709 U CN 204391709U
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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 temperature-detecting device, signal processing apparatus, flow restricter, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear, normally opened contact; Described temperature-detecting device 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) anxious brush ramp case 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 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 temperature-detecting device, signal processing apparatus, flow restricter, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear, normally opened contact; Described temperature-detecting device 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 temperature-detecting device can be arranged on surge to release on path or near, also can be arranged on lightning protection component or near.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; Described flow restricter can time one of the electronic device such as resistance, inductance, electric capacity or the circuit that combined by it, there is 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 temperature-detecting device is a kind of device of collecting temperature information, and collected temperature data is exported to signal processing apparatus by it, is transformed, is enlarged into current signal, finally export to electromagnetism actuating mechanism and drive its action by signal processing apparatus.Described temperature-detecting device by contacting or non-contacting mode measures the variations in temperature that surge releases on path with surge path of releasing, can obtain current information to make signal processing apparatus; Also by contact with lightning protection component or non-contacting mode measures variations in temperature on lightning protection component, current information can be obtained to make signal processing apparatus.Described contact type temperature measuring mode can utilize the parts such as thermistor, thermometer; It can be other modes such as infrared survey that described non-contacting temperature surveys most mode.Described signal processing apparatus built-in power.
Because lightning surge is different from the parameter such as size, direction, rate of change, duration of power current, the heat (i.e. temperature) that it produces on path or lightning protection component are released in surge is inevitable different, comprises the parameter such as the size of temperature, the rate of change of temperature.Therefore these distinguishing temperature informations are passed to signal processing device postpone by temperature-detecting device, and signal processing apparatus also by exporting the electric current with corresponding characteristic, causes electromagnetism actuating mechanism to produce different actions.Only have when power frequency short circuit current flow continuously through surge release path time, the temperature information that temperature-detecting device measures is enough to allow signal processing apparatus export makes 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 variations in temperature brought is different from the variations in temperature that power frequency short circuit current brings, this temperature 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, the intensification caused due to power frequency leakage current is the process of a slow gradual change, thermel protection device will start, 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 temperature information that the electric current that signal processing apparatus exports detects according to temperature-detecting device.
2. the lightning protection component of this Novel electric surge protector and temperature-detecting device, 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. temperature-detecting device described in by contacting or non-contacting mode measures the variations in temperature that surge releases on path with surge path of releasing, can obtain current information to make signal processing apparatus; Also by contact with lightning protection component or non-contacting mode measures variations in temperature on lightning protection component, current information can be obtained to make signal processing apparatus.Described contact type temperature measuring mode can utilize the parts such as thermistor, thermometer; Described non-contacting temperature survey mode can be other modes such as infrared survey.
Accompanying drawing explanation
Fig. 1 is the first example structure schematic diagram 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, 0 is push rod, and 1 is the first terminals, and 2 is normally opened contacts; 3 is bypasses, and 4 is flow plugs, and 5 is second terminals; 6 is overcurrent protective devices, and 7 is lightning protection components, and 8 is buffer displacement shell fragments; 9 is inertial devices, and 10 is signal processing apparatus, and 11 is thermel protection devices; 12 is electromagnetism actuating mechanisms, and 13 is link gears, and 14 is temperature-detecting devices; 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, the present embodiment is only that temperature-detecting device is installed on surge and releases on path the embodiment of (measuring with the surge mode that path contacts of releasing), and temperature-detecting device is installed on surge and releases on (cordless) near path, lightning protection component or the embodiment of neighbouring (contact or cordless) does not repeat herein.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 temperature-detecting device (14) is arranged on surge and releases on path (15), 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 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. 3 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 temperature-detecting device (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. 4 is this Novel electric surge protector the 3rd embodiment principle schematic; in this embodiment, temperature-detecting device (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. 2 are lightning protection components (7) with temperature-detecting device (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. 3, Fig. 4 are that lightning protection component (7) also can be installed on different housings from temperature-detecting device (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. 5 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 (12)
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 temperature-detecting device, signal processing apparatus, flow restricter, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, link gear, normally opened contact; Described temperature-detecting device 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 temperature-detecting device can be arranged on surge to release on path or near, also can be arranged on lightning protection component or near.
4. a kind of Novel electric surge protector according to claim 3, is characterized in that: described temperature-detecting device can by contacting or non-contacting mode measures the variations in temperature that surge releases on path with surge path of releasing; Also can by contact with lightning protection component or non-contacting mode measures variations in temperature on lightning protection component.
5. a kind of Novel electric surge protector according to claim 4, is characterized in that: described contact type temperature measuring mode can utilize thermistor, thermometer; Described non-contacting temperature survey mode can be infrared survey mode.
6. 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.
7. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described normally opened contact has reset switch.
8. 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.
9. a kind of Novel electric surge protector according to claim 1 and 2; it is characterized in that: described lightning protection component and temperature-detecting device, 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.
10. 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.
11. a kind of Novel electric surge protectors according to claim 1 and 2, is characterized in that: described overcurrent protective device can be fuse or circuit breaker.
12. 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 |
|---|---|---|---|
| CN201420691713.2U CN204391709U (en) | 2014-11-08 | 2014-11-08 | A kind of Novel electric surge protector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420691713.2U CN204391709U (en) | 2014-11-08 | 2014-11-08 | A kind of Novel electric surge protector |
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| CN204391709U true CN204391709U (en) | 2015-06-10 |
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| CN201420691713.2U Active CN204391709U (en) | 2014-11-08 | 2014-11-08 | A kind of Novel electric surge protector |
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| CN (1) | CN204391709U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576628A (en) * | 2014-11-08 | 2016-05-11 | 孙麓轩 | Novel surge protection device |
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2014
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576628A (en) * | 2014-11-08 | 2016-05-11 | 孙麓轩 | Novel surge protection device |
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