CN204391723U - A kind of Novel electric surge protector - Google Patents
A kind of Novel electric surge protector Download PDFInfo
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- CN204391723U CN204391723U CN201420708955.8U CN201420708955U CN204391723U CN 204391723 U CN204391723 U CN 204391723U CN 201420708955 U CN201420708955 U CN 201420708955U CN 204391723 U CN204391723 U CN 204391723U
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- novel electric
- surge protector
- overcurrent protective
- 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, detector for magnetic field, 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 detector for magnetic field is arranged on surge and releases near path, and 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.
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, detector for magnetic field, 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 detector for magnetic field is arranged on surge and releases near path, and 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.
The built-in magnetic field detectors of described detector for magnetic field and data amplifying device, magnetic field detectors is connected with data amplifying device, and data amplifying device is connected with electromagnetism actuating mechanism by measure loop.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.
The built-in magnetic field detectors of described detector for magnetic field and data amplifying device, described magnetic field detectors to be released the change in path magnetic field for detecting surge, exports different current signal to data amplifying device according to different magnetic field; Described data amplifying device built-in power, exports to electromagnetism actuating mechanism by measure loop after being amplified by signal, drives its action.Because the magnetic field that lightning surge and power current give off is different, comprise the parameters such as the size in magnetic field, direction, rate of change, duration, therefore the electric current difference of electromagnetism actuating mechanism exported to by final data amplifying device, and the duration of electromagnetism actuating mechanism generation action is also different.Only have when power frequency short circuit current flow continuously through surge release path time, the input induced current that electromagnetic detection continues to electromagnetism actuating mechanism, 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, and the push rod of electromagnetism actuating mechanism only ejects instantaneously and sets back, and 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 detector for magnetic field, 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 detector for magnetic field, 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.
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-closed contacts; 3 is detector for magnetic field, and 3-1 is magnetic field detectors, and 3-2 is data amplifying devices; 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; 10 is that surge is released path, and 11 is thermel protection devices, and 12 is measure loop; 13 is shells, and 14 is link gears, and 15 is reset switches.
Fig. 1 is the first example structure schematic diagram of the present utility model, and 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), connects detector for magnetic field (3) and electromagnetism actuating mechanism (4); Described thermel protection device (11) is positioned on lightning protection component (7) electrode; Described detector for magnetic field (3) is arranged on surge and releases near path (10), and is connected by measure loop (12) with electromagnetism actuating mechanism (4); Described detector for magnetic field (3) built-in magnetic field detectors (3-1) and data amplifying device (3-2), magnetic field detectors (3-1) is connected with data amplifying device (3-2), and data amplifying device (3-2) is connected by measure loop (12) with electromagnetism actuating mechanism (4); 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 (15) 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 principle schematic corresponding to Fig. 1 first embodiment, wherein inertia displacement shell fragment (8) and link gear (14) represented by dashed line, reset switch (15) can pass through inertial device (9) control normally-closed contact (2) recover closure state.
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 (10) and detector for magnetic field (3), measure loop (12), thermel protection device (11), electromagnetism actuating mechanism (4), elastic displacement shell fragment (8), inertial device (9), link gear (14), reset switch (15), wherein inertia displacement shell fragment (8) and link gear (15) represented by dashed line, reset switch (15) 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. 4 is this Novel electric surge protector the 3rd embodiment principle schematic; in this embodiment, detector for magnetic field (3) and overcurrent protective device (6) are positioned at another one housing; wherein inertia displacement shell fragment (8) and link gear (15) dotted line, reset switch (15) can pass through inertial device (9) and control normally-closed contact (2) recovery closure state.
Fig. 1, Fig. 2 are lightning protection components (7) with detector for magnetic field (3), 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 (15) accessible site in the embodiment of one; Fig. 3, Fig. 4 are that lightning protection component (7) also can be installed on different housings from detector for magnetic field (3), 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 (15) 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 (8)
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, detector for magnetic field, 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 detector for magnetic field is arranged on surge and releases near path, and 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; it is characterized in that: the built-in magnetic field detectors of described detector for magnetic field and data amplifying device; magnetic field detectors is connected with data amplifying device, and data amplifying device is connected with electromagnetism actuating mechanism.
4. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described normally-closed contact has reset switch.
5. 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.
6. a kind of Novel electric surge protector according to claim 1 and 2; it is characterized in that: described lightning protection component and detector for magnetic field, 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.
7. 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.
8. 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 |
|---|---|---|---|
| CN201420708955.8U CN204391723U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708955.8U CN204391723U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
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| Publication Number | Publication Date |
|---|---|
| CN204391723U true CN204391723U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420708955.8U Active CN204391723U (en) | 2014-11-10 | 2014-11-10 | A kind of Novel electric surge protector |
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| CN (1) | CN204391723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656006A (en) * | 2014-11-10 | 2016-06-08 | 孙麓轩 | Novel surge protector |
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2014
- 2014-11-10 CN CN201420708955.8U patent/CN204391723U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656006A (en) * | 2014-11-10 | 2016-06-08 | 孙麓轩 | Novel surge protector |
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