CN203871657U - Low residual voltage ultra wide band coaxial lightning arrester - Google Patents
Low residual voltage ultra wide band coaxial lightning arrester Download PDFInfo
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- CN203871657U CN203871657U CN201420276957.4U CN201420276957U CN203871657U CN 203871657 U CN203871657 U CN 203871657U CN 201420276957 U CN201420276957 U CN 201420276957U CN 203871657 U CN203871657 U CN 203871657U
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- coaxial
- lightning arrester
- residual voltage
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Abstract
Provided is a low residual voltage ultra wide band coaxial lightning arrester. The lightning arrester mainly solves problems that an existing coaxial lightning arrester has few discharge path and flow capacity is poor, and problems that residual voltage is high caused by insufficient discharge, and a protected device is easy to damage, and problems that transmission bands are not wide enough, application range is relatively small, and communication signal distortion may occur. The lightning arrester is characterized in that a main coaxial core (5) comprises an interface portion (53) through insulating supporters (51) and core portions (52) in equal diameter between the two insulating supporters (51). The inside of the main coaxial housing (3) is coaxially provided with a plurality of cavities in different diameters. The main coaxial core of the low residual voltage ultra wide band coaxial lightning arrester is uniform, and impedance matching is realized by a method of changing diameters of the main coaxial housing cavity. The lightning arrester is wide in transmission bands, good in flow capacity, and has a plurality of flow paths. Frequency spectrum of high frequency digital signals through the lightning arrester is abundant, signal fidelity is better, and application range is wide. The lightning arrester can fully discharge, and is low in residual voltage, and preferably protects instrument and devices on the rear.
Description
Technical field
Lightning arrester of the present utility model is mainly used in microwave communication field, particularly low residual voltage ultra broadband coaxial lightning arrester.
Background technology
Reasonably installing lightning arrester additional to communication equipment is the first-selection that prevents that it from suffering thunderbolt infringement.This lightning arrester must can, thunder and lightning filtering, can not have too much influence to the signal of communication of transmission on the one hand simultaneously.Coaxial lightning arrester is exactly according to the lightning arrester of the spectrum distribution different designs of signal of communication frequency spectrum and lightening pulse.The frequency spectrum of lightening pulse is mainly direct current and the low-frequency component below frequency tens KHz, and communication frequency is all that more than million microwave signal of hundreds of is as 800 ~ 2500MHz, both differ obvious, according to quarter-wave impedance transformation principle, the Design of length of the short-circuit coaxial line in this protector is become to 1/4th of operation wavelength, this short-circuit coaxial line in parallel is for working signal, its impedance is infinitely great, be equivalent to open circuit, do not affect the transmission of signal of communication, but for lightning wave, because thunder energy is mainly distributed in below tens KHz, short-circuit coaxial line is very little for lightning wave impedance, be similar to short circuit, thunder energy is released into ground.
Existing coaxial lightning arrester conductor adopts internal diameter of outer cover identical mostly, by the method that changes inner wire core diameter, reach impedance matching, final result is that inner core is usually made sugarcoated haws shape, and inner core is generally copper alloy made, the inner core copper alloy consumption of sugarcoated haws shape is high, and processing inconvenience, has grown easy damage service time, and cost is higher.General lightning arrester is realized by 1/4th short-circuit coaxial lines releasing of thunder and lightning, if lightening pulse is released insufficient, remaining pulse just directly outputs to equipment, forms residual voltage, how to reduce the residual voltage of lightning arrester, be the problem that lightning arrester scientific research personnel considers to relevant manufacturer always.
Under identical pulse voltage, field intensity and radius are inversely proportional to, in the situation that guaranteeing that impedance phase is same, existing coaxial lightning arrester conductor adopts internal diameter of outer cover identical mostly, by the method that changes conductor cores radius, reach impedance matching, existing coaxial lightning arrester exists that discharge channel is few, short circuit coaxial core is thin, the poor problem of through-current capability; Insufficient residual voltage causing of discharging is high, easily damages the problem of protected equipment; Passband is wide not, the less and problem that can cause signal of communication distortion of range of application.
Utility model content
In order to overcome the deficiency of background technology, the utility model provides low residual voltage ultra broadband coaxial lightning arrester, has mainly solved: mainly solved that existing coaxial lightning arrester discharge channel is few, short circuit coaxial core is thin, the poor problem of through-current capability; Insufficient residual voltage causing of discharging is high, easily damages the problem of protected equipment; Passband is wide not, the less and problem that can cause signal of communication distortion of range of application.
The technical scheme that the utility model adopts is:
A kind of low residual voltage ultra broadband coaxial lightning arrester, comprise housing and core body that coaxial spaced is installed, described housing comprises that the master of at right angle setting electrical connection is mutually with shaft housing and the same shaft housing of short circuit, described core body portion comprises at right angle setting the main coaxial core and the short circuit coaxial core that are mutually electrically connected to, described main coaxial core two ends are provided with insulated support, described main coaxial core comprises through the interface portion of insulated support and is located at the isometrical core body portion between two insulated supports, and the coaxial enclosure of described master is coaxially provided with the cavity that some diameters do not wait.
Described master be take short circuit coaxial core with shaft housing and as symmetry axis both sides, is equipped with the first coaxial cavity, the second coaxial cavity, the 3rd coaxial cavity and the 4th coaxial cavity, and each is unequal for described first, second, third and fourth coaxial cavity diameter.
The diameter of described the 4th coaxial cavity is greater than the diameter of the second coaxial cavity, and the diameter of described the second coaxial cavity is greater than the diameter of the first coaxial cavity, and the diameter of described the first coaxial cavity is greater than the diameter of the 3rd coaxial cavity.
Described short circuit shell comprises end cap and the mount pad removably connecting, and is provided with some packing rings between described end cap and mount pad.
Described short circuit coaxial core one end is electrically connected to main coaxial core, and the other end passes end cap and is connected with hold-down nut, between described short circuit coaxial core and end cap, is provided with conductive adhesive layer.
Described master is split-type structural with shaft housing and comprises the first shell, the second housing removably connecting, the 3rd shell and is shell all round, described the first coaxial cavity, the second coaxial cavity are located in second housing, described the 3rd coaxial cavity is located in the 3rd shell, and described the 4th coaxial cavity is located at all round in shell.
Described first, second and third and all round shell head and the tail be threaded connection successively.
Described housing is made by stainless steel.
Described end cap and mount pad are threaded.
The beneficial effects of the utility model are: the utility model adopts the way of the main coaxial cavity pocket of outer cover diameter of conversion to realize the coupling of impedance.Pass band of the present utility model, through-flow channel is many, and through-current capability is strong, and the frequency spectrum of the high-frequency digital signal passing through is abundant, and signal fidelity is stronger, applied range, electric discharge is abundant and residual voltage is low strong to instrument and equipment protectiveness below.
Accompanying drawing explanation
Fig. 1 is the cutaway view of an embodiment of the utility model.
Fig. 2 is the A place enlarged drawing of an embodiment of the utility model.
Fig. 3 is the standing-wave ratio curve chart of an embodiment of the utility model.
In figure, housing 1, core body 2, main with shaft housing 3, short circuit shell 4, main coaxial core 5, short circuit coaxial core 6, insulated support 51, core body portion 52, interface portion 53, the first coaxial cavity 31, the second coaxial cavities 32, the 3rd coaxial cavity 33, the four coaxial cavities 34, mount pad 42, packing ring 43, hold-down nut 44, conductive adhesive layer 61, the first shells 311, second housing 332, the three shells 333, the are shell 334 all round.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail: if Fig. 1 is in conjunction with as shown in Fig. 2 to Fig. 3, a kind of low residual voltage ultra broadband coaxial lightning arrester, comprise housing 1 and core body 2 that coaxial spaced is installed, described housing 1 comprise at right angle setting and the master that is mutually electrically connected to shaft housing 3 and short circuit with shaft housing 4, described core body 2 comprises at right angle setting the main coaxial core 5 and the short circuit coaxial core 6 that are mutually electrically connected to, described main coaxial core 5 two ends are provided with insulated support 51, described main coaxial core 5 comprises through the interface portion 53 of insulated support 51 and is located at the isometrical core body portion 52 between two insulated supports 51, described master is coaxially provided with shaft housing 3 inside the cavity that some diameters do not wait.What this embodiment adopted is N-type interface, is provided with contact pin or jack in interface portion 53.Low its main coaxial core of residual voltage ultra broadband coaxial lightning arrester that the utility model provides is even, and the way of employing conversion coaxial line internal diameter of outer cover realizes the coupling of impedance.Therefore the design's approach that discharges is external except short circuit, under hard pulse, can also between main coaxial core and shell, carry out, and can resist stronger lightening pulse, but the signal of communication impact weak on strength ratio, frequency is high is very little.The utility model adopts the way of the main coaxial cavity pocket of outer cover diameter of conversion to realize the coupling of impedance.Pass band of the present utility model, through-flow channel is many, and through-current capability is strong, and the frequency spectrum of the high-frequency digital signal passing through is abundant, and signal fidelity is stronger, applied range, electric discharge is abundant and residual voltage is low strong to instrument and equipment protectiveness below.
In the utility model, as shown in the figure, described master be take short circuit coaxial core 6 with shaft housing 3 and as symmetry axis both sides, is equipped with the first coaxial cavity 31, the second coaxial cavity 32, the 3rd coaxial cavity 33 and the 4th coaxial cavity 34, and each is unequal for described first, second and third and four cavity diameters.
In the utility model, as shown in the figure, the diameter of described the 4th coaxial cavity 34 is greater than the diameter of the second coaxial cavity 32, and the diameter of described the second coaxial cavity 32 is greater than the diameter of the first coaxial cavity 31, and the diameter of described the first coaxial cavity 31 is greater than the diameter of the 3rd coaxial cavity 33.The utility model adopts even inner core, and the mode of conversion conductor casing realizes impedance matching, causes uniform conductor inner core integral body to attenuate, and materials are few, and easy to process.On the other hand, according to Theory of Electromagnetic Field, under identical pulse voltage, electric field strength in coaxial line and the radius of position are inversely proportional to, in the situation that impedance phase is same, the inner core attenuating electric field strength around strengthens, especially around field intensity is the strongest for the inner core in the 3rd the thinnest coaxial cavity 33 of air layer, when strong lightening pulse passes through, in these local air insulations, just can puncture, to thunder and lightning, increase leakage path, be equivalent to a gas tube surge arrester in parallel, therefore, can be in case stronger lightening pulse.And the utility model also can further discharge at the 3rd coaxial cavity 33 of rear class, therefore, residual voltage can be lower.An example of this design shows excellent electrical properties, can make the utility model realize standing-wave ratio within the scope of frequency spectrum 0.7 ~ 3.3GHz and be less than 1.2, at 0.8 ~ 3.15GHz, is less than 1.08.Serviceability is good, safe and reliable.
In the utility model, as shown in the figure, described short circuit shell 4 comprises end cap 41 and the mount pad 42 removably connecting, and is provided with some packing rings 43 between described end cap 41 and mount pad 42.Be provided with some packing rings 43 and guarantee that shell and the short circuit coaxial core of short circuit part are uniform all the time when fine setting short circuit part length.
In the utility model, as shown in the figure, described short circuit coaxial core 6 one end are electrically connected to main coaxial core 5, and the other end passes end cap 41 and is connected with hold-down nut 44, between described short circuit coaxial core 6 and end cap 41, is provided with conductive adhesive layer 61.By hold-down nut 44, connect short circuit coaxial core 6 and main coaxial core 5, simple and convenient, be preferred version, conductive adhesive layer 61 can strengthen the electrical connection properties between short circuit coaxial core and end cap, makes lightning arrester performance more stable.
In the utility model, as shown in the figure, described master is split-type structural with shaft housing 3 and comprises the first shell 331, the second housing 332 removably connecting, the 3rd shell 333 and is shell 334 all round, described the first coaxial cavity 31, the second coaxial cavity 32 are located in second housing 332, described the 3rd coaxial cavity 33 is located in the 3rd shell 333, and described the 4th coaxial cavity 34 is located at all round in shell 334.Split-type structural disconnects conveniently, handling ease, and this is simple in structure, and result of use is good.
In the utility model, as shown in the figure, described first, second and third and all round shell head and the tail be threaded connection successively.Be threaded to preferred version, simple and practical, safe and reliable, also can adopt other connected modes or whole processing mode herein.
In the utility model, as shown in the figure, described housing 1 is made by stainless steel.Also can adopt the resistant materials such as aluminium alloy or copper alloy herein, stainless steel is preferred version, and other can be according to the actual requirements as alternative.
In the utility model, as shown in the figure, end cap 41 and mount pad 42 are threaded.Be threaded to preferred version, simple and practical, safe and reliable, also can adopt other connected modes herein.
Embodiment should not be considered as restriction of the present utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection range of the present utility model.
Claims (9)
1. one kind low residual voltage ultra broadband coaxial lightning arrester, comprise housing (1) and core body (2) that coaxial spaced is installed, described housing (1) comprises at right angle setting the same shaft housing of master (3) and the same shaft housing of short circuit (4) that are mutually electrically connected to, described core body (2) comprises at right angle setting the main coaxial core (5) and the short circuit coaxial core (6) that are mutually electrically connected to, described main coaxial core (5) two ends are provided with insulated support (51), it is characterized in that: described main coaxial core (5) comprises through the interface portion (53) of insulated support (51) and is located at the isometrical core body portion (52) between two insulated supports (51), the same shaft housing of described master (3) inside is coaxially provided with the cavity that some diameters do not wait.
2. low residual voltage ultra broadband coaxial lightning arrester according to claim 1, it is characterized in that: the same shaft housing of described master (3) be take short circuit coaxial core (6) and as symmetry axis both sides, is equipped with the first coaxial cavity (31), the second coaxial cavity (32), the 3rd coaxial cavity (33) and the 4th coaxial cavity (34), each is unequal for described first, second, third and fourth coaxial cavity diameter.
3. low residual voltage ultra broadband coaxial lightning arrester according to claim 2, it is characterized in that: the diameter of described the 4th coaxial cavity (34) is greater than the diameter of the second coaxial cavity (32), the diameter of described the second coaxial cavity (32) is greater than the diameter of the first coaxial cavity (31), and the diameter of described the first coaxial cavity (31) is greater than the diameter of the 3rd coaxial cavity (33).
4. according to the low residual voltage ultra broadband coaxial lightning arrester described in claim 1 or 2 or 3, it is characterized in that: described short circuit shell (4) comprises end cap (41) and the mount pad (42) removably connecting, and between described end cap (41) and mount pad (42), is provided with some packing rings (43).
5. according to the low residual voltage ultra broadband coaxial lightning arrester described in claim 1 or 2 or 3, it is characterized in that: described short circuit coaxial core (6) one end is electrically connected to main coaxial core (5), the other end passes end cap (41) and is connected with hold-down nut (44), between described short circuit coaxial core (6) and end cap (41), is provided with conductive adhesive layer (61).
6. low residual voltage ultra broadband coaxial lightning arrester according to claim 3, it is characterized in that: the same shaft housing of described master (3) is for split-type structural and comprise the first shell (331), the second housing (332) removably connecting, the 3rd shell (333) and is shell (334) all round, described the first coaxial cavity (31), the second coaxial cavity (32) are located in second housing (332), described the 3rd coaxial cavity (33) is located in the 3rd shell (333), and described the 4th coaxial cavity (34) is located at all round in shell (334).
7. low residual voltage ultra broadband coaxial lightning arrester according to claim 6, is characterized in that: described first, second and third and all round shell head and the tail be threaded connection successively.
8. low residual voltage ultra broadband coaxial lightning arrester according to claim 7, is characterized in that: described housing (1) is made by stainless steel.
9. low residual voltage ultra broadband coaxial lightning arrester according to claim 4, is characterized in that: described end cap (41) and mount pad (42) are threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276957.4U CN203871657U (en) | 2014-05-28 | 2014-05-28 | Low residual voltage ultra wide band coaxial lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276957.4U CN203871657U (en) | 2014-05-28 | 2014-05-28 | Low residual voltage ultra wide band coaxial lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871657U true CN203871657U (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420276957.4U Withdrawn - After Issue CN203871657U (en) | 2014-05-28 | 2014-05-28 | Low residual voltage ultra wide band coaxial lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871657U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009396A (en) * | 2014-05-28 | 2014-08-27 | 温州大学 | Low-residual-voltage ultra wide band coaxial lightning arrester |
-
2014
- 2014-05-28 CN CN201420276957.4U patent/CN203871657U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009396A (en) * | 2014-05-28 | 2014-08-27 | 温州大学 | Low-residual-voltage ultra wide band coaxial lightning arrester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141008 Effective date of abandoning: 20151230 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |