CN202167847U - Ignition circuit system of gap type surge protector - Google Patents
Ignition circuit system of gap type surge protector Download PDFInfo
- Publication number
- CN202167847U CN202167847U CN2011202811258U CN201120281125U CN202167847U CN 202167847 U CN202167847 U CN 202167847U CN 2011202811258 U CN2011202811258 U CN 2011202811258U CN 201120281125 U CN201120281125 U CN 201120281125U CN 202167847 U CN202167847 U CN 202167847U
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- Prior art keywords
- surge protector
- type surge
- resistance
- clearance type
- transformer
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Abstract
The utility model discloses an ignition circuit system of a gap type surge protector, which comprises the gap type surge protector and an ignition circuit of the gap type surge protector. The gap type surge protector is provided with an access line end and a grounding end and comprises a plurality of adjacent gap conductors. The ignition circuit of the gap type surge protector comprises a plurality of capacitors, a boosting transformer, a first resistor, a second resistor and a discharge tube. One end of each capacitor is connected with one corresponding gap conductor, a first end of a secondary level of the boosting transformer is connected with one ends of the capacitors disconnected with the gap conductors, one end of the first resistor is connected with the access line end of the surge protector, and the other end of the first resistor is connected with a first end of a primary level of the boosting transformer. One end of the second resistor is connected with a second end of the primary level of the boosting transformer, the other end of the second resistor is connected with a second end of the secondary level of the boosting transformer, one end of the discharge tube is connected with the second end of the secondary level of the boosting transformer, and the other end of the discharge tube is connected with the grounding end of the gap type surge protector.
Description
Technical field
The utility model relates to surge protector, particularly a kind of firing circuit system of clearance type surge protector.
Background technology
(Surge Protective Device is in order to restriction transient overvoltage and a kind of equipment that guides surge current SPD) to surge protector.It not only has lightning protection function, and suppresses the Switching Overvoltage effect in addition.
Surge protector is a kind of low-voltage variation device commonly used; Under normal circumstances; It is in high impedance status, in case and circuit because of thunderbolt or other reason when surge occurring, its can conducting in the extremely short time; Lightning current or overvoltage are introduced the earth through earth connection, come the equipment on the protection circuit with this.Surge protector is provided with tie-in line terminal and earth terminal, the live wire of its line attachment termination electrical network, or the zero line in the electrical network; Its ground connection termination protective wire or ground wire.
The clearance type surge protector is a kind of of surge protector; It comprises several gap conductors; It is through when surge occurs; Adjacent two gap conductors puncture air gap and the conducting between them, thereby make each the gap conductor conducting in the whole surge protector form bleed-off circuit, come the equipment on the protection circuit with this.
At present, gap conductor commonly used generally adopts graphite flake, is characterized in that cost is low.
Like Fig. 1, present stage mainly is to adopt capacitive coupling to give the mode of electricity for the firing circuit of each gap conductor of clearance type surge protector, make each gap conductor conducting after, form bleed-off circuit to surge.
Now thisly be for the main shortcoming of mode of each gap conductor-powered through capacitive coupling merely: when this surge protector in application; When applying the electric current of certain surge to it; Have corresponding surge voltage, this surge voltage can be through being capacitively coupled to each gap conductor then, when the voltage of this coupling is enough high; Can make two conductors of adjacent puncture air gap and the conducting between them, thereby make each the conductor conducting in the whole surge protector form bleed-off circuit.When but if this surge voltage is enough not high; Will make that two adjacent conductors can't puncture air gap formation bleed-off circuit between the gap, the surge protector that will make does not so play a protective role, and more serious is some conductor conductings of surge protector the inside; And some can not conducting; Will make like this when surge current passes through by force, can make surge protector inside produce spark and blast, thereby cause more serious hazardous accidents.
" piezo-resistance " meaning is that resistance value becomes with voltage in certain current/voltage scope, or says the resistance device of " resistance value is to voltage-sensitive ".
" current-limiting resistance " is also referred to as current-limiting resistance for voltage stabilizing adjustment resistance, and its effect is to reduce the load end electric current, for example adds the electric current that a current-limiting resistance can reduce to flow through light-emitting diode at light-emitting diode one end, prevents to damage.
The utility model content
In order to overcome the shortcoming of prior art; The invention discloses a kind of firing circuit of clearance type surge protector; Even it imposes on the very low surge voltage of surge protector; Also can make the inner reliable conducting of each gap conductor of surge protector, thereby form bleed-off circuit, the equipment on the ground of the express delivery in time protection circuit.
The disclosed technical scheme of the utility model is following:
A kind of firing circuit system of clearance type surge protector; The firing circuit that comprises clearance type surge protector and clearance type surge protector; Said clearance type surge protector is provided with tie-in line terminal and earth terminal, and said clearance type surge protector comprises the gap conductor that several are adjacent; The firing circuit of said clearance type surge protector, it further comprises:
Several electric capacity, the corresponding gap conductor of each electric capacity, and its corresponding gap conductor of a termination of each electric capacity;
Step-up transformer, the first secondary end of said step-up transformer is connected with an end of the disconnected gap of above-mentioned all electric capacity conductor;
First resistance, said first resistance, one end is connected with the tie-in line terminal of surge protector, and the other end is connected with the first elementary end of step-up transformer;
Second resistance, an end of said second resistance is connected with the second elementary end of step-up transformer; The other end of said second resistance is connected with the second secondary end of said step-up transformer;
Discharge tube, said discharge tube one end is connected with the second secondary end of said step-up transformer; The said discharge tube other end is connected with the earth terminal of said clearance type surge protector.
Preferably, the operating frequency of said step-up transformer is greater than 10KHz.
Preferably, said second resistance is piezo-resistance.
Preferably, said first resistance is current-limiting resistance.
Preferably, said gap conductor is a graphite flake.
Compared with prior art, the beneficial effect of the utility model is following:
Even the utility model imposes on the very low surge voltage of surge protector, also can make the inner reliable conducting of each gap conductor of surge protector, thereby form bleed-off circuit, the equipment on the ground of the express delivery in time protection circuit.
Description of drawings
Fig. 1 is the circuit connection diagram of firing circuit of the clearance type surge protector of prior art;
Fig. 2 is the circuit connection diagram of the firing circuit system of a kind of clearance type surge protector of the utility model embodiment.
Embodiment
The below combines accompanying drawing and specific embodiment that the utility model is done further description.
Embodiment
Like Fig. 2; A kind of firing circuit system of clearance type surge protector; The firing circuit 2 that comprises clearance type surge protector 1 and clearance type surge protector; Clearance type surge protector 1 is provided with tie-in line terminal L/N and earth terminal PE, and clearance type surge protector 1 comprises the gap conductor 11 that several are adjacent; There is air gap 12 between adjacent two gap conductors 11.The live wire that its tie-in line terminal L/N gets access to grid, or the zero line in the electrical network; Its earth terminal PE connects protective wire or ground wire.In the present embodiment, gap conductor 11 is a graphite flake.
Like Fig. 2, what frame of broken lines was corresponding is the firing circuit 2 of clearance type surge protector.
Wherein, the firing circuit 2 of clearance type surge protector, it further comprises:
Several capacitor C, the corresponding gap conductor of each capacitor C, and its corresponding gap conductor 11 of a termination of each electric capacity.Said each capacitor C is a coupling capacitance.
Step-up transformer 21, step-up transformer 21 is provided with primary and secondary, and the turn ratio between the primary and secondary is N1:N2, and N2 is greater than N1.Step-up transformer 21 is a high-frequency step-up transformer, and its operating frequency is greater than 10KHz.The first secondary end of step-up transformer 21 is connected with an end of the disconnected gap of above-mentioned all electric capacity conductor.
One end of second resistance R, 2, the second resistance R 2 is connected with the second elementary end of step-up transformer 21; The other end of second resistance R 2 is connected with the second secondary end of step-up transformer 21.In the present embodiment, second resistance R 2 is a piezo-resistance.
Introduce the operation principle of the utility model embodiment below in detail:
When among the tie-in line terminal L/N surge current being arranged; Electric current can be earlier forms the loop through elementary, second resistance R 2 of first resistance R 1, step-up transformer 21, discharge tube 22 with earth terminal PE; At this moment step-up transformer 21 secondary will induce the high pressure of (N2/ N1 is a step-up ratio) doubly than elementary high N2/ N1; Through being added to each gap conductor 11 after the capacitive coupling, this high pressure of induction is enough to make adjacent two gap conductors 11 to puncture the gap 12 between them and is communicated with, and finally makes each gap 12 in the clearance type surge protector 1 by this high-voltage breakdown; Thereby the formation bleed-off circuit reaches the effect of equipment on the protection circuit.
Compared with prior art, the beneficial effect of the utility model is following:
Even the utility model imposes on the very low surge voltage of surge protector, also can make the inner reliable conducting of each gap conductor of surge protector, thereby form bleed-off circuit, the equipment on the ground of the express delivery in time protection circuit.
The utility model preferred embodiment just is used for helping to set forth the utility model.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this utility model yet and is merely described embodiment.Obviously, according to the content of this specification, can do a lot of modifications and variation.These embodiment are chosen and specifically described to this specification, is principle and practical application in order to explain the utility model better, thereby person skilled can be utilized the utility model well under making.The utility model only receives the restriction of claims and four corner and equivalent.More than the disclosed several specific embodiments that are merely the application, but the application is not limited thereto, any those skilled in the art can think variation, all should drop in the application's the protection range.
Claims (5)
1. the firing circuit system of a clearance type surge protector; Comprise the clearance type surge protector; Said clearance type surge protector is provided with tie-in line terminal and earth terminal, and said clearance type surge protector comprises the gap conductor that several are adjacent, it is characterized in that:
Also comprise the firing circuit of clearance type surge protector, it further comprises:
Several electric capacity, the corresponding gap conductor of each electric capacity, and its corresponding gap conductor of a termination of each electric capacity;
Step-up transformer, the first secondary end of said step-up transformer is connected with an end of the disconnected gap of above-mentioned all electric capacity conductor;
First resistance, said first resistance, one end is connected with the tie-in line terminal of surge protector, and the other end is connected with the first elementary end of step-up transformer;
Second resistance, an end of said second resistance is connected with the second elementary end of step-up transformer; The other end of said second resistance is connected with the second secondary end of said step-up transformer;
Discharge tube, said discharge tube one end is connected with the second secondary end of said step-up transformer; The said discharge tube other end is connected with the earth terminal of said clearance type surge protector.
2. the firing circuit system of a kind of clearance type surge protector according to claim 1 is characterized in that the operating frequency of said step-up transformer is greater than 10KHz.
3. the firing circuit system of a kind of clearance type surge protector according to claim 1 is characterized in that, said second resistance is piezo-resistance.
4. the firing circuit system of a kind of clearance type surge protector according to claim 1 is characterized in that, said first resistance is current-limiting resistance.
5. the firing circuit system of a kind of clearance type surge protector according to claim 1 is characterized in that, said gap conductor is a graphite flake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202811258U CN202167847U (en) | 2011-08-04 | 2011-08-04 | Ignition circuit system of gap type surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202811258U CN202167847U (en) | 2011-08-04 | 2011-08-04 | Ignition circuit system of gap type surge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202167847U true CN202167847U (en) | 2012-03-14 |
Family
ID=45803651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202811258U Expired - Lifetime CN202167847U (en) | 2011-08-04 | 2011-08-04 | Ignition circuit system of gap type surge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202167847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768534A (en) * | 2019-01-29 | 2019-05-17 | 厦门赛尔特电子有限公司 | A kind of Multiple level type surge protection device of active triggering |
-
2011
- 2011-08-04 CN CN2011202811258U patent/CN202167847U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768534A (en) * | 2019-01-29 | 2019-05-17 | 厦门赛尔特电子有限公司 | A kind of Multiple level type surge protection device of active triggering |
| CN109768534B (en) * | 2019-01-29 | 2024-04-02 | 厦门赛尔特电子有限公司 | Actively triggered multi-gap type surge protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |
|
| CX01 | Expiry of patent term |