CN204391719U - A kind of Novel electric surge protector - Google Patents
A kind of Novel electric surge protector Download PDFInfo
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- CN204391719U CN204391719U CN201420691979.7U CN201420691979U CN204391719U CN 204391719 U CN204391719 U CN 204391719U CN 201420691979 U CN201420691979 U CN 201420691979U CN 204391719 U CN204391719 U CN 204391719U
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- surge protector
- lightning protection
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Abstract
The utility model relates to a kind of Novel electric surge protector, mainly comprises lightning protection component, temperature measuring equipment, overcurrent protective device, thermel protection device, flow restricter, judgment means, actuating mechanism, normally opened contact and shell.Described lightning protection component and overcurrent protective device surge in series are released path; Described thermel protection device is positioned on lightning protection component electrode; Described temperature measuring equipment is arranged on surge and releases on path or around it, and is connected with judgment means input; Described judgment means output is connected with actuating mechanism; Described actuating mechanism controls normally opened contact; It is in parallel with lightning protection component that described normally opened contact and flow restricter are composed in series bypass.In the utility model, temperature measuring equipment can detect the temperature of element or circuit delicately; the result that judgment means detects according to temperature measuring equipment judges to flow through surge and to release the type of the electric current in path; and the state of normally opened contact is changed by control action mechanism, there is the problem of action blind area to power current in the protective device solving existing surge protector.
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; 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.
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 damaged all can not be departed from main circuit by thermel protection device and overcurrent protective device, 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, there is the problem of action blind area to power current in the overcurrent protective device and the thermel protection device that overcome existing surge protector.
The utility model is by the following technical solutions: the utility model is for the surge protector in power electronic circuits system, comprises lightning protection component, overcurrent protective device, thermel protection device and shell; Described lightning protection component and overcurrent protective device surge in series are released path, and described thermel protection device is positioned on lightning protection component electrode.The utility model also comprises temperature measuring equipment, flow restricter, judgment means, actuating mechanism, normally opened contact; Described temperature measuring equipment can be arranged on lightning protection component or be arranged on around lightning protection component, also can be arranged on surge and release on path or be arranged on surge and release around path, and be connected with judgment means input; Described judgment means output is connected with actuating mechanism; Described actuating mechanism controls normally opened contact action; It is in parallel with lightning protection component that described normally opened contact and flow restricter are composed in series bypass.
The built-in power of judgment means described in the utility model and data processing unit; Described actuating mechanism controls normally opened contact action by mechanical linkage or electromagnetic mode; After described normally opened contact is closed, can not open again before overcurrent protective device disconnects; Described normally opened contact has reset switch; The circuit that described flow restricter can be one of electronic devices such as resistance, inductance, electric capacity or be combined by it; Described overcurrent protective device can be fuse or circuit breaker; Described lightning protection component, comprises piezo-resistance, discharge tube, TVS one or a combination set of.
Core of the present utility model is temperature measuring equipment and judgment means.Described temperature measuring equipment can sense that lightning protection component or surge are released the variations in temperature of path; Described temperature measuring equipment can have the energy conversion unit that temperature signal can be converted to the signal of telecommunication, also can not this unit; The temperature signal detected (maybe by the temperature signal detected current signal of obtaining after energy conversion unit conversion) is transferred to the data processing unit in judgment means by described temperature measuring equipment by the input of judgment means, data processing unit processes the temperature signal received (or current signal), analyzes, and judges according to its size, rate of change equivalent the type flowing through the electric current of surge leadage circuit.Result can be divided into following several situation: if judged result is less power current, then actuating mechanism is failure to actuate, normally opened contact do not close, and is protected by thermel protection device; If judged result is the power current in action blind area, then actuating mechanism action, normally opened contact close, and the by-path turn-on that described normally opened contact and flow restricter are composed in series causes overcurrent protective device by bypass and protects; If judged result is the power current being greater than action blind area, then actuating mechanism is failure to actuate, normally opened contact do not close, and is directly protected by overcurrent protective device; If judged result is surge current, then normally released by surge path of releasing.
Of the present utility modelly to be characterised in that:
1. this Novel electric surge protector adds 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;
2. the lightning protection component of this Novel electric surge protector, temperature measuring equipment, overcurrent protective device, thermel protection device, flow restricter, judgment means, actuating mechanism, normally opened 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 contained in different modules to combine and jointly form the utility model, be convenient to install and use, enhance practicality;
3. the actuating mechanism in this Novel electric surge protector is according to the judged result action of judgment means or be failure to actuate, and actuating mechanism institute energy requirement can be supplied by judgment means, and also configurable independent power supply, also can be supplied by power line;
4. this Novel electric surge protector can not have overcurrent protective device;
5. temperature measuring equipment described in this Novel electric surge protector can be contact, also can be contactless; Described temperature measuring equipment can have the energy conversion unit that temperature signal can be converted to the signal of telecommunication, also can not this unit.
Accompanying drawing explanation
Fig. 1 is the first example structure schematic diagram of the present utility model.
Fig. 2 is the second example structure schematic diagram of the present utility model.
Fig. 3 is the first 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, 1 is that surge is released path, and 2 is temperature measuring equipments; 3 is lightning protection components, and 4 is overcurrent protective devices, and 5 is data processing units; 6 is judgment means, and 7 is actuating mechanisms, and 8 is normally opened contacts; 9 is flow restricters, and 10 is thermel protection devices, and 11 is shells; 11 ' is another shell, and 12 is bypasses, and 13 is signal transmssion lines; 14 is reset switches, and aa ' is the input of judgment means, and bb ' is the output of judgment means.
Fig. 1 is the first example structure schematic diagram of the present utility model, this Novel electric surge protector has overcurrent protective device (4) in this embodiment, and described lightning protection component (3) and overcurrent protective device (4) surge in series are released path (1); Described temperature measuring equipment (2) is arranged on lightning protection component (3), and is connected with judgment means (6) input (aa '); Described judgment means (6) output (bb ') be connected with actuating mechanism (7); Described thermel protection device (10) is positioned on lightning protection component (3) electrode; It is in parallel with lightning protection component (3) that described normally opened contact (8) and flow restricter (9) form bypass (12).
When lightning protection component (3) has electric current to flow through, the temperature of lightning protection component (3) can change, described temperature measuring equipment (2) can detect the temperature of lightning protection component (3), and by it (if temperature measuring equipment has the energy conversion unit (energy conversion unit does not draw) that temperature signal can be converted to the signal of telecommunication, also can be then the signal of telecommunication that the energy conversion unit of this temperature signal in temperature measuring equipment converts to) be transferred to the built-in data processing unit (5) of judgment means (6) (data processing unit (5) does not draw in FIG) by the input of judgment means (6) (aa '), data processing unit (5) is according to the size of temperature (or electric current), rate of change equivalent judges the type flowing through the electric current of lightning protection component.If judged result is less power current, then actuating mechanism (7) is failure to actuate, normally opened contact (8) do not close, and is protected by thermel protection device (10); If judged result is the power current in action blind area, then actuating mechanism (7) action, normally opened contact (8) close, bypass (12) conducting that described normally opened contact (8) and flow restricter (9) are composed in series, cause overcurrent protective device (4) by described bypass (12) to protect, after described normally opened contact (8) is closed, can not open again before overcurrent protective device (4) disconnects; If judged result is the power current being greater than action blind area, then actuating mechanism (7) is failure to actuate, normally opened contact (8) do not close, and is directly protected by overcurrent protective device (4); If judged result is surge current, then normally released by lightning protection component (3) and overcurrent protective device (4) surge in series path (1) of releasing.
For the temperature measuring equipment in the utility model, identical all with the first embodiment, namely temperature measuring equipment can have the energy conversion unit that temperature signal can be converted to the signal of telecommunication, also can not this unit, repeats no more.
Described normally opened contact has reset switch (illustrating not shown in FIG.); Described actuating mechanism controls normally opened contact action (actuating mechanism described in embodiment illustrated in fig. 1 (7) controls normally opened contact action by Electromagnetic Control mode, and mechanical linkage control mode is not repeated herein) by mechanical linkage or electromagnetic mode.
Described lightning protection component can be electronic devices such as piezo-resistance, discharge tube, TVS one or a combination set of; The circuit that described flow restricter can be one of electronic devices such as resistance, inductance, electric capacity or be combined by it; Described overcurrent protective device can be fuse or circuit breaker.
Fig. 2 is the second example structure schematic diagram of the present utility model, and wherein, temperature measuring equipment (2) is arranged on surge and releases path (1) around.Temperature measuring equipment described in the utility model can be contact, also can be contactless.Based on the distortion done by the structure in the utility model all in protection range.
Fig. 3 is the principle schematic of the first embodiment of the present utility model, corresponding with Fig. 1 (the first example structure schematic diagram), reset switch (14) and the built-in data processing unit (5) of judgment means (6) is depicted in figure, aa ' is the input of judgment means, and bb ' is the output of judgment means.Described reset switch can make normally opened contact recover normally open.
Fig. 4 is the 3rd embodiment principle schematic of the present utility model; overcurrent protective device (4) is not had in the surge protector of this embodiment; only comprise surge to release path (1), temperature measuring equipment (2), lightning protection component (3), judgment means (6), actuating mechanism (7), normally opened contact (8), flow restricter (9), thermel protection device (10) and reset switch (14); wherein aa ' is the input of judgment means, and bb ' is the output of judgment means.Because surge protector in use; if there is no 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 and surge protector is departed from main circuit.
Fig. 1, Fig. 2, embodiment illustrated in fig. 3 in; the lightning protection component (3) of this Novel electric surge protector, temperature measuring equipment (2), overcurrent protective device (4), thermel protection device (10), flow restricter (9), judgment means (6), actuating mechanism (7), normally opened contact (8), reset switch (14) are integrated in one; be loaded on a housing; be full of the requirement of power consumption equipment to surge protector discharge capacity, response time and voltage protection level three indexs, enhance the reliability of equipment.The composition of this Novel electric surge protector also can be encapsulated in different modules to combine and jointly form the utility model (not drawing) herein, is convenient to install and use, enhances practicality.
Fig. 5 is the utility model protected effect schematic diagram.Power frequency short circuit current can be divided into three parts: little power frequency short circuit 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; And marginal, be also the action blind area of power frequency short circuit current 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 (13)
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 surge in series are released 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 measuring equipment, flow restricter, judgment means, actuating mechanism, normally opened contact; Described temperature measuring equipment is connected with judgment means input; Described judgment means output is connected with actuating mechanism; Described actuating mechanism controls normally opened contact action; It is in parallel with lightning protection component that described normally opened contact and flow restricter are composed in series bypass.
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 measuring equipment can be arranged on lightning protection component or be arranged on around lightning protection component, also can be arranged on surge and release on path or be arranged on surge and release around path.
4. a kind of Novel electric surge protector according to claim 1 and 2, it is characterized in that: described temperature measuring equipment can be contact, also can be contactless.
5. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described temperature measuring equipment can have the energy conversion unit that temperature signal can be converted to the signal of telecommunication, also can not this unit.
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; it is characterized in that: be provided with power supply and can the data processing unit of analytic signal size and rate of change thereof in described judgment means, described data processing unit is connected with temperature measuring equipment through judgment means input.
9. a kind of Novel electric surge protector according to claim 1 and 2, is characterized in that: described actuating mechanism controls normally opened contact action by mechanical linkage or electromagnetic mode.
10. a kind of Novel electric surge protector according to claim 1 and 2; it is characterized in that: described lightning protection component, temperature measuring equipment, overcurrent protective device, thermel protection device, flow restricter, judgment means, actuating mechanism, normally opened contact can be positioned at same housing, also can be installed on different housings or be encapsulated in different modules and combine.
11. a kind of Novel electric surge protectors 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.
12. 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.
13. 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 |
|---|---|---|---|
| CN201420691979.7U CN204391719U (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 |
|---|---|---|---|
| CN201420691979.7U CN204391719U (en) | 2014-11-08 | 2014-11-08 | A kind of Novel electric surge protector |
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| Publication Number | Publication Date |
|---|---|
| CN204391719U true CN204391719U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420691979.7U Active CN204391719U (en) | 2014-11-08 | 2014-11-08 | A kind of Novel electric surge protector |
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| CN (1) | CN204391719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633928A (en) * | 2014-11-08 | 2016-06-01 | 孙麓轩 | Novel surge protector |
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2014
- 2014-11-08 CN CN201420691979.7U patent/CN204391719U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633928A (en) * | 2014-11-08 | 2016-06-01 | 孙麓轩 | Novel surge protector |
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