CN105656007A - Novel surge protector - Google Patents
Novel surge protector Download PDFInfo
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- CN105656007A CN105656007A CN201410669002.XA CN201410669002A CN105656007A CN 105656007 A CN105656007 A CN 105656007A CN 201410669002 A CN201410669002 A CN 201410669002A CN 105656007 A CN105656007 A CN 105656007A
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Abstract
The invention relates to a novel surge protector comprising a lightning protection element, an over-current protection device, a thermal protection device and a housing. The lightning protection element and the over-current protection device are connected in series to form a surge releasing passage. The thermal protection device is arranged on a lightning protection element electrode. Besides, the novel surge protector also includes a normally-closed contact, a force detector, a signal processing device, a detection circuit, a buffer displacement spring plate, an inertial device, an electromagnetic actuating mechanism, a linkage mechanism; the normally-closed contact is arranged in the surge releasing passage and is connected in series with the lightning protection element and the over-current protection device; the force detector is connected with the signal processing device and the signal processing device is connected with the electromagnetic actuating mechanism by the detection circuit; the electromagnetic actuating mechanism controls the buffer displacement spring plate to move; the buffer displacement spring plate is connected with the inertial device; and the inertial device controls the normally-closed contact to move by the linkage mechanism. With the protector, a problem of existence of blind motion areas of the existing thermal protection device and over-current protection device can be solved.
Description
Technical field
The invention belongs to the surge protection technical field of electronic electric equipment.
Background technology
Thunder and lightning is a kind of special weather phenomena aloft discharged by charged cloud and cause. Thunder and lightning is the major reason causing electronics 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. The metallic circuits such as the supply lead being connected with electronics, signal wire and control line are installed one of the important measures that surge protector is lightning protection. 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 the safety of institute's proterctive equipment is brought hidden danger.
Present stage SPD has Thermal protection and overcurrent protection (internal or external) two kinds of protectors in use usually; Thermal protection device is used for protecting lightning protection component deterioration heating; overcurrent protection device is used for the lightning protection component puncture short preventing transient over-current or superpotential from causing; simultaneously overcurrent protection as a kind of standby protected mode of Thermal protection, so effective protective effect can be played in most of occasion.
But owing to thermal conduction is a relatively slow process, the sensitivity of Thermal protection device is low, effective protection still can be played for slow temperature-rise period, but for low (in) steep temperature rise situation owing to causing under lasting superpotential state in pressing system, Thermal protection tripping gear can not this process of perception in time and there is not action, 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 protection device, also can not there is action in overcurrent protection device, thus cause SPD on fire; If selecting little by the initiation value of overcurrent protection device, though can start, but being difficult to resist the impact of lightning current, causing SPD cannot normally release lightning current.
In sum; there is serious action blind area in the overcurrent protection device of existing SPD and Thermal protection device; SPD is by when the electric current in this region, the SPD that Thermal protection device and overcurrent protection device all can not be about to damage departs from main power circuit, thus serious potential safety hazard occurs.
200910069431.2) and " on-Line Monitor Device of a kind of Surge Protector " (patent No.: in 200910069594.0), it is proposed that two kinds are detected the method for state of device of surge protector by measuring the mode of electric power in prior art " the detection device of the device of surge protector " (patent No.:. wherein " the detection device of the device of surge protector " (patent No.: 200910069431.2) propose metal spring leaf is arranged on device of surge protector side or is connected by wire, pressure transmitter is utilized to measure the distortion of metal spring leaf, thus learn the state of device of surge protector, without being connected between this kind of method pressure transmitter and metal spring leaf, measure out of true, moreover the mode of texturing of metal spring leaf is single, also make the signal source of pressure sensor senses very faint. " on-Line Monitor Device of a kind of Surge Protector " (patent No.: 200910069594.0) propose to connect hardware with surge suppression device, the shape of hardware is bending, when passing through surge suppression device and hardware when electric current, 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 kind of measuring method measuring accuracy is higher, but hardware is sealed in surge passage, the ability of the surge current of releasing on surge suppression device is brought very big 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, the problem of I above-mentioned " the overcurrent protection device of existing SPD and Thermal protection device exist serious action blind area " is not solved, I revises to the deficiency of this electric power testing method and innovates, thus the current type in surge protector line can be judged, the power current that overcurrent protection device and Thermal protection device exist action blind area carries out being break the time-division.
Summary of the invention
In order to effectively solve the above prior-art problems, the present invention proposes the novel surge protector for power-supply system of a kind of easy for installation and dependable performance, the basic action blind zone problem solving existing Thermal protection device and overcurrent protection device.
The present invention is by the following technical solutions: the present invention is for the surge protector in power electronic circuits system, this surge protector comprises lightning protection component, overcurrent protection device, Thermal protection device and shell, described lightning protection component and the series connection of overcurrent protection device, form surge to release path, described Thermal protection device is positioned on lightning protection component electrode, it is characterised in that: this novel surge protector also comprises normally closed contact, force detector, signal processor unit, measure loop, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, linkage mechanism; Described normally closed contact is arranged in surge and releases path, connects with lightning protection component and overcurrent protection device; Described force detector is connected with signal processor unit, and signal processor unit is connected with electromagnetism actuating mechanism by measure loop; Described electromagnetism action mechanism controls buffer displacement shell fragment moves; Described buffer displacement shell fragment is connected with inertial device; Described inertial device is through linkage mechanism controls normally closed contact action.
Described force detector is arranged on surge and releases path side, releases path isolation with surge. Described normally closed contact also has reset switch. Described lightning protection component, comprises voltage dependent resistor, discharge tube, TVS one or a combination set of; Described overcurrent protection device can be fusible cut-out or isolating switch; Described inertial device is flying wheel or weight or damping gear or pressure lock or time delay circuit, just can move when the power continued.
Described force detector comprises power supply, measuring circuit, insulating element, force transducer, 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 transducer, and the output terminal of force transducer is connected with signal processor unit, described measuring circuit is released with surge the parallel placement of path. the present invention utilizes two parallel conductor electric currents attracting in the same way, the incorgruous principle repelled each other, when having electric current to flow through on path is released in surge, charged measuring circuit must be produced electric power (comprising suction and repulsion) by it, and the size of thunder and lightning surge and power current, direction, velocity of variation, the parameters such as time length are different, cause its flow through surge release path time the size of electric power that measuring circuit is produced, the velocity of variation in direction is also completely different, the different electric power produced on measuring circuit are measured by force transducer by insulating element, and then be converted into different electric current signals and export to signal processor unit, by the conversion of signal processor unit, judge and amplify, electric current signal is inputed to electromagnetism actuating mechanism by measure loop, electromagnetism actuating mechanism is caused to produce different actions. only when power frequency short-circuit current flow continuously through surge release path time, the electric power information that measuring circuit produces exports to signal processor unit by force transducer, being enough to allow signal processor unit 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, thunder and lightning surge due to time of origin extremely fast, 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 so that signal processor unit exports the electric current continued, causing the push rod of electromagnetism actuating mechanism only can eject instantaneously and recover original position, inertial device can not be driven due to its inertia effect.
The mode of operation of this novel 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 is due to the dynamic state of inertia effect maintenance, linkage mechanism opening surge can not be driven to release the normally closed contact of path, so that it is guaranteed that lightning current is released smoothly, when lightning protection component deteriorate power frequency leakage current reach certain value time, lightning protection component shell temperature also on rise to certain altitude, the intensification caused due to power frequency leakage current is the process of a slow gradual change, and Thermal protection device will start, and disconnect at lightning protection component electrode place, when the power current that power-supply system fault 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 inertia effect, but now short-circuit current does not disappear, electromagnetism actuating mechanism push rod still heads on buffer displacement shell fragment, after waiting time delay Millisecond �� t, inertial device rotates counterclockwise rapidly, linkage mechanism opening surge is driven to release the normally closed contact of path, thus the lightning protection component being about to damage is departed from from main power circuit.
It is a feature of the present invention that:
1. this novel 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 processor unit, measure loop, electromagnetism actuating mechanism, inertial device; thus the normally closed contact releasing in path by the mechanism opening surge that links when power current flows through, solve the action blind zone problem of Thermal protection device and overcurrent protection device.
2. the lightning protection component of this novel surge protector and force detector, signal processor unit, measure loop, overcurrent protection device, Thermal protection device, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, linkage mechanism, normally closed contact, reset switch can be integrated in one; it is loaded on housing; meet electrical equipment to the requirement of the through-flow capacity of surge protector, time of response and voltage protection level three indexs; enhance the reliability of equipment; different housings can also be installed on or it is encapsulated in different modules and combine, be convenient to install and use.
3. this novel surge protector can not have overcurrent protection device.
4. the force detector of this novel surge protector is arranged on surge and releases path side, releases path isolation with surge; Force detector comprises power supply, measuring circuit, insulating element, force transducer, 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 transducer, and the output terminal of force transducer is connected with signal processor unit; Described measuring circuit is released with surge the parallel placement of path.
5. the force detector of this novel surge protector is installed on surge and releases path side, releases path isolation with surge, does not affect surge and normally release, the level of protection needing proterctive equipment do not affected by surge protector; Described force detector built-in power, measuring circuit, insulating element, force transducer, the electric power on measuring circuit directly measured by force transducer by insulating element, and measuring accuracy height, measuring result is accurate.
Accompanying drawing explanation
Fig. 1 is first embodiment of the present invention structural representation.
Fig. 2 is the inside enlarged view of the force detector of the present invention.
Fig. 3 is first embodiment of the present invention principle schematic.
Fig. 4 is second embodiment of the present invention principle schematic.
Fig. 5 is third embodiment of the present invention principle schematic.
Fig. 6 is protected effect schematic diagram of the present invention.
Specific embodiments
Below in conjunction with drawings and Examples, the present invention is further described:
As shown in the figure, 0 is push rod, and 1 is the first wiring end, and 2 is normally closed contact; 3 is force detector, and 3-1 is measuring circuit, and 3-2 is power supply, and 3-3 is force transducer; 3-4 is insulating element, and 4 is electromagnetism actuating mechanism, and 5 is the 2nd wiring end, and 6 is overcurrent protection device; 7 is lightning protection component, and 8 is buffer displacement shell fragment, and 9 is inertial device, and 10 is that surge is released path; 11 is Thermal protection device, and 12 is measure loop, and 13 is shell; 14 is linkage mechanism, and 15 is signal processor unit, and 16 is reset switch.
Fig. 1 is first embodiment of the present invention structural representation, 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 protection device (6); Black heavy line is measure loop (12), connection signal treatment unit (15) and electromagnetism actuating mechanism (4); Described Thermal 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 processor unit (15), and signal processor unit (15) is connected with electromagnetism actuating mechanism (4); Described signal processor unit (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); Described inertial device (9) controls normally closed contact (2) action through linkage mechanism (14) after rotating. 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 the push rod (0) that thunder and lightning surge causes is regained and flying wheel can not be promoted to rotate, the push rod (0) that lasting power current causes continues ejection and flying wheel just can be promoted to rotate, thus drives linkage mechanism (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 mode of operation of the present embodiment: when lightning current flows through lightning protection component (7), the rapid ejection of electromagnetism actuating mechanism (4) push rod (0) recovers again, inertial device (9) is due to the dynamic state of inertia effect maintenance, linkage mechanism (14) can not be driven to open surge release the normally closed contact (2) of path (10), so that it is guaranteed that lightning current is released smoothly; When lightning protection component (7) deterioration power frequency leakage current reaches certain value, Thermal 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-supply system fault 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 linkage mechanism (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 power circuit.
Fig. 2 is the inside enlarged view of the force detector of the present invention, 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 transducer (3-3), and the output terminal of force transducer (3-3) is connected with signal processor unit (15), described measuring circuit (3-1) is released with surge the parallel placement of path (10). the present invention utilizes two parallel conductor electric currents attracting in the same way, the incorgruous principle repelled each other, when having electric current to flow through on path is released in surge, charged measuring circuit must be produced electric power (comprising suction and repulsion) by it, and the size of thunder and lightning surge and power current, direction, velocity of variation, the parameters such as time length are different, cause its flow through surge release path time the size of electric power that measuring circuit is produced, the velocity of variation in direction is also completely different, the upper different electric power produced of measuring circuit (3-1) are measured by force transducer (3-3) by insulating element (3-4), and then be converted into different electric current signals and export to signal processor unit (15), by the conversion of signal processor unit (15), judge and amplify, electric 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 linkage mechanism (14) represent with dotted line, and reset switch (16) can pass through inertial device (9) control normally closed contact (2) and recover closed state.
Fig. 4 is this novel surge protector the 2nd embodiment principle schematic, overcurrent protection device (6) is not had in the surge protector of this embodiment, only comprise surge to release path (10) and force detector (3), signal processor unit (15), measure loop (12), Thermal protection device (11), electromagnetism actuating mechanism (4), elasticity displacement shell fragment (8), inertial device (9), linkage mechanism (14), reset switch (16), wherein inertia displacement shell fragment (8) and linkage mechanism (16) represent with dotted line, reset switch (16) can pass through inertial device (9) control normally closed contact (2) and recover closed state.Because surge protector is in use; if inside does not have built-in overcurrent protection device; so rear end must be connected in series overcurrent protection device; therefore the present embodiment describe novel surge protector have power current by time it can be allowed external the timely action of overcurrent protection device, thus by surge protector depart from main power circuit.
Fig. 5 is this novel surge protector the 3rd embodiment principle schematic; in this embodiment, force detector (3), signal processor unit (15) are positioned at another one housing with overcurrent protection device (6); wherein inertia displacement shell fragment (8) and linkage mechanism (15) dotted line, reset switch (16) can pass through inertial device (9) control normally closed contact (2) and recover closed state.
Fig. 1, Fig. 3 are the embodiments that lightning protection component (7) can be integrated in one with force detector (3), signal processor unit (15), measure loop (12), overcurrent protection device (6), Thermal protection device (11), buffer displacement shell fragment (8), inertial device (9), electromagnetism actuating mechanism (4), linkage mechanism (14), normally closed contact (2), reset switch (16); Fig. 4, Fig. 5 are that lightning protection component (7) can also be installed on different housings from force detector (3), signal processor unit (15), measure loop (12), overcurrent protection device (6), Thermal protection device (11), buffer displacement shell fragment (8), inertial device (9), electromagnetism actuating mechanism (4), linkage mechanism (14), normally closed contact (2), reset switch (16) or be encapsulated in different modules the embodiment combined.
Fig. 6 is protected effect schematic diagram of the present invention, and power frequency short-circuit current is divided into three parts: little power current refers to the range of current that Thermal protection device can start; Big power frequency short-circuit current refers to the range of current that overcurrent protection device can start; Between between the two be then the power frequency short-circuit current action blind area of existing surge protector protector, abbreviation action blind area.
Utilize the technical scheme of the present invention, reach corresponding technique effect or technical scheme equivalents under the design philosophy not departing from the present invention, all within protection scope of the present invention.
Claims (9)
1. a novel surge protector, comprise lightning protection component, overcurrent protection device, Thermal protection device and shell, described lightning protection component and the series connection of overcurrent protection device, form surge to release path, described Thermal protection device is positioned on lightning protection component electrode, it is characterised in that: this novel surge protector also comprises normally closed contact, force detector, signal processor unit, measure loop, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, linkage mechanism; Described normally closed contact is arranged in surge and releases path, connects with lightning protection component and overcurrent protection device; Described force detector is connected with signal processor unit, and signal processor unit is connected with electromagnetism actuating mechanism by measure loop; Described electromagnetism action mechanism controls buffer displacement shell fragment moves; Described buffer displacement shell fragment is connected with inertial device; Described inertial device is through linkage mechanism controls normally closed contact action.
2. the novel surge protector of one according to claim 1, it is characterised in that: this novel surge protector can not have overcurrent protection device.
3. the novel surge protector of one according to claim 1 and 2, it is characterised in that: described force detector is installed on surge and releases path side, releases path insulation with surge.
4. the novel surge protector of one according to claim 1 and 2, it is characterized in that: described force detector comprises power supply, measuring circuit, insulating element, force transducer, 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 transducer, and the output terminal of force transducer is connected with signal processor unit; Described measuring circuit is released with surge the parallel placement of path.
5. the novel surge protector of one according to claim 1 and 2, it is characterised in that: described normally closed contact has reset switch.
6. the novel surge protector of one according to claim 1 and 2, it is characterised in that: described inertial device is flying wheel or weight or damping gear or pressure lock or time delay circuit.
7. the novel surge protector of one according to claim 1 and 2; it is characterized in that: described lightning protection component and force detector, signal processor unit, measure loop, overcurrent protection device, Thermal protection device, buffer displacement shell fragment, inertial device, electromagnetism actuating mechanism, linkage mechanism, normally closed contact, reset switch can be positioned at same housing, it is also possible to are installed on different housings or are encapsulated in different modules and combine.
8. the novel surge protector of one according to claim 1 and 2, it is characterised in that: described overcurrent protection device can be fusible cut-out or isolating switch.
9. the novel surge protector of one according to claim 1 and 2, it is characterised in that: described lightning protection component can be electron devices such as voltage dependent resistor, discharge tube, TVS one or a combination set of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669002.XA CN105656007A (en) | 2014-11-10 | 2014-11-10 | Novel surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669002.XA CN105656007A (en) | 2014-11-10 | 2014-11-10 | Novel surge protector |
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| Publication Number | Publication Date |
|---|---|
| CN105656007A true CN105656007A (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410669002.XA Pending CN105656007A (en) | 2014-11-10 | 2014-11-10 | Novel surge protector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889992A (en) * | 2021-12-07 | 2022-01-04 | 山东中呈防雷科技有限公司 | Power supply lightning arrester alarm device |
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| CN101943727A (en) * | 2009-07-06 | 2011-01-12 | 孙巍巍 | Online detection device of surge protector |
| CN203086125U (en) * | 2012-12-05 | 2013-07-24 | 孙巍巍 | Novel surge protection device |
| CN203218873U (en) * | 2012-12-05 | 2013-09-25 | 孙巍巍 | Novel surge protector |
| CN103855696A (en) * | 2012-12-05 | 2014-06-11 | 孙巍巍 | Novel surge protection device |
| CN204391728U (en) * | 2014-11-10 | 2015-06-10 | 孙麓轩 | A kind of Novel electric surge protector |
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2014
- 2014-11-10 CN CN201410669002.XA patent/CN105656007A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0350477A2 (en) * | 1988-07-06 | 1990-01-10 | Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft | Disconnexion device for surge arresters |
| CN201466711U (en) * | 2009-07-06 | 2010-05-12 | 孙巍巍 | Surge protector with detection device |
| CN101943727A (en) * | 2009-07-06 | 2011-01-12 | 孙巍巍 | Online detection device of surge protector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113889992A (en) * | 2021-12-07 | 2022-01-04 | 山东中呈防雷科技有限公司 | Power supply lightning arrester alarm device |
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Application publication date: 20160608 |
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