CN201188540Y

CN201188540Y - Lightning strike protector with protecting equipment

Info

Publication number: CN201188540Y
Application number: CNU2007203117686U
Authority: CN
Inventors: 何濂洵
Original assignee: ANNSO TECHNOLOGY Co Ltd
Current assignee: Cyber Power Systems Inc
Priority date: 2007-12-24
Filing date: 2007-12-24
Publication date: 2009-01-28
Anticipated expiration: 2017-12-24

Abstract

The utility model relates to a lighting strike protector with a protecting device. A lighting strike protecting unit and a point discharge module are connected in series and are arranged between a power supply and a load so as to form a loop, and a critical voltage is determined through adjusting the distances among the point discharge points of the point discharge module. When an input voltage is no higher than the critical voltage, the point discharge module does not generate point discharge to enable the loop not to be switched on, so the lighting strike protecting unit does not operate; when the input voltage is higher than the critical voltage, the point discharge module generates point discharge to switch on the loop, so the lighting strike protecting unit starts to operate, in this way, the lighting strike protecting unit can not be kept in a abnormal high-voltage state for a long time to cause danger for the lighting strike protecting unit or the load due to high voltage.

Description

The lightning strike protection device of tool protective device

Technical field

The utility model relates to a kind of lightning strike protection device, and relates in particular to a kind of lightning strike protection device of tool protective device.

Background technology

According to statistics, in the incident that the lightning thunderbolt damages, great majority are because line influence is caused, so the protection of circuit is a most important ring in the whole anti-lightning thunderbolt device.

In the known technology to the safeguard measure of circuit; see also as shown in Figure 8; two power input L in a load (30); between the N and connect a lightning strike protection element (10); when being struck by lightning; one thunderbolt high pressure will be arranged by power input L; N sends into load (30); this moment, this lightning strike protection element (10) operated immediately; the high pressure that will be struck by lightning is derived; by this, the voltage that inputs to load (30) is that lightning strike protection device (10) restriction is lower than a strangulation voltage of setting, load (30) is produced the protection effect.

Above-mentioned lightning strike protection element (10) is though reach the purpose of lightning strike protection to load (30); but lightning strike protection element (10) itself does not have any safeguard measure; especially ought be in general high voltage and (be higher than city electricity consumption 120V; be lower than thunderbolt voltage 6KV) under the state; for example misplug on the power supply of 220V; lightning strike protection element (10) promptly can start, and gets off for a long time this lightning strike protection element (10) to be burnt because of being in for a long time, so that causes danger.

So a safeguard measure is arranged; it is serial connection one temperature protector on this lightning strike protection element circuit; when the lightning strike protection element is in undesired high pressure conditions following time for a long time; its circuit will generate heat; in case surpass the patient scope of temperature protector; this line broken circuit of military order burns to avoid the lightning strike protection element.

The employed temperature protector of said method utilizes a fuse for it more, when line temperature over insurance silk can be heat-resisting boundary after, fuse will break and make circuit be off state, but thus, often must change fuse and can continue to use, real is inconvenience; So a lightning strike protection device if can be arranged, it only in the running down of thunderbolt high pressure, must prevent the generation of the problems referred to above.

Summary of the invention

For this reason, main purpose of the present utility model is to provide the lightning strike protection device of a tool protective device, only just starts its inner lightning strike protection element during high pressure in thunderbolt, in the high pressure input load that prevents to be struck by lightning.

For realizing that the major technique means that aforementioned purpose is taked are to make aforementioned lightning strike protection device be parallel between two power inputs of a load, this lightning strike protection device comprises:

One lightning strike protection element;

One point discharge module comprises a plurality of relative point discharge points, and constitutes a loop with aforementioned lightning strike protection element connected in series.

By adjusting the distance between the 2 point discharge points; cause the voltage swing of point discharge with decision; control is when the voltage that does not reach the thunderbolt high pressure is imported this lightning strike protection element by this; unlikelyly cause point discharge; make the loop can't conducting; cause this lightning strike protection element only the time just to start in the input of thunderbolt high pressure, with protection lightning strike protection element not reason be in for a long time under the high pressure conditions that does not reach the thunderbolt high pressure, cause lightning strike protection element or circuit burnout.

Aforementioned lightning strike protection device can be further by series inductance or shunt capacitance between this lightning strike protection element and point discharge module to adjust the starting characteristic of this point discharge module; Strangulation voltage in the time of also can taking place to adjust thunderbolt by series inductance between described lightning strike protection device and load or shunt capacitance.

Description of drawings

Fig. 1 is the circuit diagram of the utility model first embodiment;

Fig. 2 is the circuit diagram of the utility model second embodiment;

Fig. 3 is the circuit diagram of the utility model the 3rd embodiment;

Fig. 4 is the circuit diagram of the utility model the 4th embodiment;

Fig. 5 is the circuit diagram of the utility model the 5th embodiment;

Fig. 6 is the circuit diagram of the utility model the 6th embodiment;

Fig. 7 is the circuit diagram of the utility model the 7th embodiment;

Fig. 8 is the circuit diagram of known lightning strike protection device.

[main element symbol description]

(10) lightning strike protection element

(20) point discharge module (21) (22) point discharge point

(30) load circuit

Embodiment

About a preferred embodiment of the lightning strike protection device of the utility model tool protective device, see also shown in Figure 1ly, the ac power input end L that it is parallel to a load (30) between the N, comprising:

One lightning strike protection element (10), it is set with a strangulation voltage, when a thunderbolt high pressure (6KV) by power input L, in N when input,, described lightning strike protection element (10) high pressure that is about to be struck by lightning is derived, and destroys with protection load (30) high pressure that is not struck by lightning;

One point discharge module (20), it comprises two relative point discharge points (21) (22), and connects with aforementioned lightning strike protection element (10), and is to constitute a loop, wherein relative with suitable distance between this two point discharges point (21) (22).

Below only be described further with regard to the lightning strike protection device of above-mentioned the utility model tool protective device:

When by power input L, when the voltage that N imported is higher than a critical voltage that is determined by point discharge module (20), this point discharge module (20) begins to produce point discharge, and the loop of the described lightning strike protection device of conducting, make lightning strike protection element (10) just as being directly connected between power supply and the load (30), to produce the protective effect of voltage clamping;

When by power input L, the voltage that N imported is higher than general city electricity consumption (120V), when for example power supply being mispluged on the power supply of 220V, because this voltage is not higher than this critical voltage, so this point discharge module (20) can not produce point discharge, make the loop of described lightning strike protection device fail conducting, so lightning strike protection element (10) will can not operate, and reason is not under the high pressure conditions that does not reach the thunderbolt high pressure for a long time, causes lightning strike protection element (10) to burn;

In addition, this point discharge module (10) can be by adjusting the distance between two point discharges points (21) (22), the size of this critical voltage when causing point discharge with decision.

For adjusting the starting characteristic of this point discharge module (20), the size of this critical voltage when causing point discharge with decision, the utility model further improvement as following examples:

See also shown in Figure 2ly, it is second embodiment of the present utility model, and itself and first embodiment are roughly the same, and difference is that the two ends of this lightning strike protection element (10) are parallel with a capacitor C;

Other sees also shown in Figure 3, and it is the 3rd embodiment of the present utility model, and itself and first embodiment are roughly the same, and difference is to be in series with an inductance L between this lightning strike protection element (10) and the point discharge module (20);

See also shown in Figure 4ly again, it is the 4th embodiment of the present utility model, and itself and first embodiment are roughly the same, and difference is this lightning strike protection element (10) two ends capacitor C in parallel earlier, is connected with point discharge module (20) by an inductance L again.

Should be for adjusting in order to the strangulation magnitude of voltage size of restriction input load (30) voltage, the utility model is further improved as following examples again:

See also shown in Figure 5ly, it is the 5th embodiment of the present utility model, and itself and first embodiment are roughly the same, and difference is to be parallel with a capacitor C between two power inputs of this load (30);

Other sees also shown in Figure 6, and it is the 6th embodiment of the present utility model, and itself and first embodiment are roughly the same, and difference is an input of this load (30) inductance L of connecting;

See also shown in Figure 7ly again, it is the 7th embodiment of the present utility model, and itself and first embodiment are roughly the same, and difference is between two inputs of this load (30) after the capacitor C in parallel, again in an input of this load (30) inductance L of connecting.

From the above, when the high pressure that the utility model is produced in the experience thunderbolt was imported, this point discharge module produced point discharge immediately, makes the lightning strike protection element as direct connection power input, high pressure is derived, and with a voltage input load circuit that is lower than strangulation voltage; If be input as and be higher than general city with voltage, when being lower than the critical voltage of this point discharge module, then this point discharge module can't start, so the lightning strike protection element is failure to actuate, so can protect effect to the generation of lightning strike protection element.

In sum, the utility model possesses creativeness and practicality, and does not see publication or public use, meets the application important document of utility model patent, so file an application in accordance with the law.

Claims

1, a kind of lightning strike protection device of tool protective device, it is parallel between a power supply and the load circuit, it is characterized in that comprising:

One lightning strike protection element;

One point discharge module comprises a plurality of relative point discharge points, and constitutes a loop with aforementioned lightning strike protection element connected in series, just causes point discharge when the voltage by described point discharge module is higher than thunderbolt voltage, makes the loop conducting.

2, the lightning strike protection device of tool protective device as claimed in claim 1 is characterized in that described lightning strike protection element two ends are parallel with an electric capacity.

3, the lightning strike protection device of tool protective device as claimed in claim 1 or 2 is characterized in that series connection one inductance between described lightning strike protection element and the point discharge module.

4, the lightning strike protection device of tool protective device as claimed in claim 1 is characterized in that being parallel with an electric capacity between two power inputs of described load.

5, the lightning strike protection device of tool protective device as claimed in claim 1 or 2 is characterized in that an input of described load is in series with an inductance.

6, as the lightning strike protection device of claim 1,2 or 4 described tool protective devices, it is characterized in that changing the distance between the described 2 point discharge points, change is caused the voltage swing of point discharge.

7, the lightning strike protection device of tool protective device as claimed in claim 3 is characterized in that changing the distance between the described 2 point discharge points, change is caused the voltage swing of point discharge.

8, the lightning strike protection device of tool protective device as claimed in claim 5 is characterized in that changing the distance between the described 2 point discharge points, change is caused the voltage swing of point discharge.