CN203721854U - Ceramic capacitance direct current blocker - Google Patents
Ceramic capacitance direct current blocker Download PDFInfo
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- CN203721854U CN203721854U CN201420092467.9U CN201420092467U CN203721854U CN 203721854 U CN203721854 U CN 203721854U CN 201420092467 U CN201420092467 U CN 201420092467U CN 203721854 U CN203721854 U CN 203721854U
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- ceramic condenser
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Abstract
Disclosed is a ceramic capacitance direct current blocker. The ceramic capacitance direct current blocker comprises an outer conductor, an inner conductor and a cross-core type ceramic capacitor. The outer conductor is connected with the ground, the inner conductor is blocked, and the cross-core type ceramic capacitor and the inner conductor are connected in series and are connected through a welding mode. The utility model relates to the field of a direct current isolation technology for inner and outer conductors of a transmission line, and especially relates to the ceramic capacitance direct current blocker. The cross-core type ceramic capacitor is employed for connecting in series with the inner conductor, the cross-core type ceramic capacitor is connected with the inner conductor through welding, the contact is firm and reliable, and the appearance is beautiful and elegant; and direct currents and low-frequency surges generated on the inner and outer conductors of the transmission line are well blocked out, and at the same time, the transmission of needed radiofrequency signals is not influenced.
Description
Technical field
The utility model relates to direct current separating technology field on transmission line internal and external conductor, particularly relates to a kind of ceramic condenser direct-current blocking-up device.
Background technology
In the tunnel of railway and high-speed railway, mostly adopt leaky cable covering system, because leaky cable is from the close together of high voltage power contact line, make the internal and external conductor of leaky cable produce the longitudinal induction electromotive force of some strength, the size of longitudinal induction electromotive force of generation and the length of leaky cable and high voltage power net electric current are directly proportional.With regard to existing transmission line, the induced voltage of cable inner conductor can cause damage to main equipment; The induced voltage of cable outer conductor can threaten to attendant's personal safety.In engineering, the induced voltage of cable outer conductor adopts ground connection elimination conventionally, and the electric current being produced by the induced voltage of cable inner conductor is processed by installing direct-current blocking-up device additional.Direct-current blocking-up device English is DC-Block, is a kind of stopping direct current device, is a kind of stopping direct current device, and direct-current blocking-up device is mainly used on leaky cable.From structure, it is a kind of high voltage bearing capacitor.Its operation principle is direct current and the low frequency surge producing on blocking-up transmission line internal and external conductor, does not affect the transmission of required radiofrequency signal simultaneously.Say from structure, direct-current blocking-up device mainly contains three kinds: the first is inner wire blocking-up, and outer conductor is communicated with; The second is outer conductor blocking-up, and inner wire is communicated with; The third is that internal and external conductor is blocked simultaneously.What in the patent No. " CN201220519949.9 ", record the employing of direct-current blocking-up device is by anodized, realizes cavity 1 and the insulation of cavity 2 and the insulation of connector coupling bar, reaches internal and external conductor and blocks simultaneously.Its Insertion Loss and third order intermodulation are higher than a kind of ceramic condenser direct-current blocking-up device, and therefore patent 201220519949.9 direct-current blocking-up devices are applicable to the situation of conventional DC blocking-up.Meanwhile, when anodized, sheet alkali, sulfuric acid and other liquid organic solvent are all harmful to, and such processing mode has caused significantly and polluted water, atmosphere, and cost is high.
Summary of the invention
The purpose of this utility model will provide a kind of ceramic condenser direct-current blocking-up device exactly, and it can solve the existing equipment damage of existing transmission line, the life problem such as be on the hazard safely.
The purpose of this utility model is achieved in that a kind of ceramic condenser direct-current blocking-up device, comprises outer conductor, inner wire, core through type ceramic condenser, it is characterized in that: described outer conductor is connected with the earth inner wire blocking-up; Described core through type ceramic condenser is connected with inner wire, and connects by welding manner.
In the inner chamber of a kind of ceramic condenser direct-current blocking-up of the utility model N-type device the first outer conductor A, be provided with inner wire A, the one end of the elastic contact body A in inner wire A is provided with jack A, and other end cover has core through type ceramic condenser A; The two ends of described core through type ceramic condenser A are respectively arranged with insulating trip A, insulating trip B, and the outer ring of core through type ceramic condenser A is provided with contact pins A; Described jack A, contact pins A outer ring are overlapped respectively and are had insulator A; In one end inner chamber of described outer conductor the first outer conductor A, be inserted with the second outer conductor A, the outer ring of the second outer conductor A is provided with sealing gasket; In the peripheral groove of the first described outer conductor A homonymy, be provided with jump ring and locked by nut A.
In a kind of ceramic condenser direct-current blocking-up of the utility model DIN type device the first outer conductor B inner chamber, be provided with inner wire B, the one end of the elastic contact body B in inner wire B is provided with contact pin B, and the other end is provided with B; In described elastic contact body B, be provided with core through type ceramic condenser B, the two ends of core through type ceramic condenser B are respectively arranged with insulating trip C, insulating trip D; Described jack B, contact pin B overlaps and has insulator B respectively outward; In one end inner chamber of the first described outer conductor B, be inserted with second outer conductor the second outer conductor B, the second outer conductor is provided with sealing ring by the outer ring of nut B, and by nut nut, B locks.
The utility model DIN type elastic contact body and core through type ceramic condenser contact site fluting, head design becomes certain slope.
A kind of ceramic condenser direct-current blocking-up device described in the utility model, is characterized in that: described elastic contact body adopts elastomeric beryllium copper.
A kind of ceramic condenser direct-current blocking-up device described in the utility model, it is characterized in that: described core through type ceramic condenser adopts pottery baking to be made, its capacitance is 1000PF, withstand voltage is 300VDC, insulation resistance is 3000M Ω, and serviceability temperature scope is-55 DEG C～125 DEG C, inner surface all-tin plating, it is zinc-plated that outer surface is part circumferential surface, and both ends of the surface are not zinc-plated.
The utility model had both solved the damage that the direct current that produces on transmission line internal and external conductor and low frequency surge cause main equipment, did not affect again the transmission of required radiofrequency signal simultaneously.Adopt core through type ceramic condenser to connect with inner wire, core through type ceramic condenser and inner wire are welded to connect, and contact solid and reliablely, and appearance looks elegant is generous; Aspect of performance, inner wire blocking-up, outer conductor is communicated with, and standing-wave ratio, Insertion Loss are little, and temperature stability is good, and it is not only applicable to the situation of conventional DC blocking-up, is also suitable for suppressing affecting microwave and radio-frequency measurement precision and even destroys the direct current signal of instrument.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of ceramic condenser direct-current blocking-up of the utility model N-type device;
Fig. 2 is the structural representation of the utility model N-type inner wire;
Fig. 3 is the structural representation of a kind of ceramic condenser direct-current blocking-up of the utility model DIN type device;
Fig. 4 is the structural representation of the utility model DIN type inner wire;
Fig. 5 is the utility model DIN type elastic contact body structural representation;
Fig. 6 is the utility model core through type ceramic capacitor structure schematic diagram;
In figure: 1, the first outer conductor A; 2, insulator A; 3, jack A; 4, elastic contact body A; 5, insulating trip A; 6, core through type pottery core through type ceramic condenser A; 7, insulating trip B; 8, contact pins A; 9, the second outer conductor A; 10, jump ring; 11, sealing gasket; 12, nut A; 1 ', nut B; 2 ', sealing ring; 3 ', insulator B; 4 ', the first outer conductor B; 5 ', jack B; 6 ', insulating trip C; 7 ', core through type pottery core through type ceramic condenser B; 8 ', insulating trip D; 9 ', elastic contact body B; 10 ', contact pin B; The 11 ' second outer conductor B.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to accompanying drawing, a kind of ceramic condenser direct-current blocking-up device, comprises outer conductor, inner wire, core through type ceramic condenser, it is characterized in that: described outer conductor is connected with the earth inner wire blocking-up; Described core through type ceramic condenser is connected with inner wire, and connects by welding manner.In the inner chamber of a kind of ceramic condenser direct-current blocking-up of N-type device the first outer conductor A1, be provided with inner wire A, the one end of the elastic contact body A4 in inner wire A is provided with jack A3, and other end cover has core through type ceramic condenser A6; The two ends of described core through type ceramic condenser A6 are respectively arranged with insulating trip A5, insulating trip B7, and the outer ring of core through type ceramic condenser A6 is provided with contact pins A 8; Described jack A3, contact pins A 8 outer rings are overlapped respectively insulator A2; In one end inner chamber of described outer conductor the first outer conductor A1, be inserted with the second outer conductor A9, the outer ring of the second outer conductor A9 is provided with sealing gasket 11; In the peripheral groove of the first described outer conductor A1 homonymy, be provided with jump ring 10 and locked by nut A12.In a kind of ceramic condenser direct-current blocking-up of DIN type device the first outer conductor B4 ' inner chamber, be provided with inner wire B, the one end of the elastic contact body B9 ' in inner wire B is provided with contact pin B10 ', and the other end is provided with B5 '; In described elastic contact body B9 ', be provided with core through type ceramic condenser B7 ', the two ends of core through type ceramic condenser B7 ' are respectively arranged with insulating trip C6 ', insulating trip D8 '; The outer cover respectively of described jack B5 ', contact pin B10 ' has insulator B3 '; In one end inner chamber of the first described outer conductor B4 ', be inserted with second outer conductor the second outer conductor B11 ', the second outer conductor is provided with sealing ring 2 ' by the outer ring of nut B11 ', is locked by nut nut B1 '.DIN type elastic contact body and core through type ceramic condenser contact site fluting, head design becomes certain slope.Described elastic contact body adopts elastomeric beryllium copper.Described core through type ceramic condenser adopts pottery baking to be made, and its capacitance is 1000PF, and withstand voltage is 300VDC, insulation resistance is 3000M Ω, and serviceability temperature scope is-55 DEG C～125 DEG C, inner surface all-tin plating, it is zinc-plated that outer surface is part circumferential surface, and both ends of the surface are not zinc-plated.When concrete enforcement, 1), can be seen by Fig. 1 and Fig. 3, the first outer conductor is communicated with the second outer conductor, interference fit between them, and be connected direct current and low frequency surge on elimination outer conductor with the earth.2), Fig. 2 and Fig. 4 can find out that two ends, the utility model inner wire left and right form core through type ceramic condenser parts, left end is connected with core through type ceramic condenser inner surface, right-hand member is connected with core through type ceramic condenser outer surface, the middle good pottery of insulation property that adopts is made medium, and direct current and low frequency surge can not be passed through.3), elastic contact body adopts elastomeric beryllium copper, in Fig. 5, the elastic contact body of a kind of ceramic condenser direct-current blocking-up of DIN type device and core through type ceramic condenser contact site fluting, head design becomes certain slope, such structure plays guide effect can make resilient contact insert in core through type core through type ceramic condenser time, and contacts well with core through type ceramic condenser inner surface.4), in Fig. 6, core through type ceramic condenser adopts pottery baking to be made, its capacitance is 1000PF, withstand voltage is 300VDC, insulation resistance is 3000M Ω, serviceability temperature scope is-55 DEG C～125 DEG C.Inner surface all-tin plating, it is zinc-plated that outer surface is part circumferential surface, both ends of the surface are not zinc-plated, when such structure is convenient to core through type core through type ceramic condenser outer surface and contact pin or jack welding not with the coating generation conducting of core through type ceramic condenser inner surface, elastic contact body all contacts with coating in core through type ceramic condenser inner surface optional position, has ensured installation quality.5), at core through type ceramic condenser both ends of the surface installing insulating sheet, to stop core through type ceramic condenser surfaces externally and internally current lead-through.Therefore, the utility model has well been blocked the direct current and the low frequency surge that on transmission line internal and external conductor, produce, does not affect again the transmission of required radiofrequency signal simultaneously.Its third order intermodulation is low, meet≤low intermodulation requirement of-150dBc@20W of energy, and the electrical property such as standing-wave ratio and Insertion Loss, third order intermodulation aspect is all better, it is not only applicable to the situation that conventional DC is blocked, the direct current signal that is also suitable for suppressing to affect microwave and radio-frequency measurement precision and even destroys instrument is a good direct-current blocking-up device.
Claims (6)
1. a ceramic condenser direct-current blocking-up device, comprises outer conductor, inner wire, core through type ceramic condenser, it is characterized in that: described outer conductor is connected with the earth inner wire blocking-up; Described core through type ceramic condenser is connected with inner wire, and connects by welding manner.
2. a kind of ceramic condenser direct-current blocking-up device according to claim 1, it is characterized in that: a kind of ceramic condenser direct-current blocking-up of N-type device the first outer conductor A(1) inner chamber in be provided with inner wire A, elastic contact body A(4 in inner wire A) one end be provided with jack A(3), other end cover has core through type ceramic condenser A(6); Described core through type ceramic condenser A(6) two ends be respectively arranged with insulating trip A(5), insulating trip B(7), core through type ceramic condenser A(6) outer ring be provided with contact pins A (8); Described jack A(3), contact pins A (8) outer ring overlaps respectively and has insulator A(2); Described outer conductor the first outer conductor A(1) one end inner chamber in be inserted with the second outer conductor A(9), the second outer conductor A(9) outer ring be provided with sealing gasket (11); The first described outer conductor A(1) be provided with jump ring (10) in the peripheral groove of homonymy and by nut A(12) locking.
3. a kind of ceramic condenser direct-current blocking-up device according to claim 1, it is characterized in that: a kind of ceramic condenser direct-current blocking-up of DIN type device the first outer conductor B(4 ') be provided with inner wire B in inner chamber, elastic contact body B(9 ' in inner wire B) one end be provided with contact pin B(10 '), the other end is provided with B (5 '); Described elastic contact body B(9 ') in be provided with core through type ceramic condenser B(7 '), core through type ceramic condenser B(7 ') two ends be respectively arranged with insulating trip C(6 '), insulating trip D(8 '); Described jack B (5 '), contact pin B(10 ') cover has insulator B(3 ' respectively outward); The first described outer conductor B(4 ') one end inner chamber in be inserted with second outer conductor the second outer conductor B(11 '), the second outer conductor is by nut B(11 ') outer ring be provided with sealing ring (2 '), by nut nut B(1 ') locking.
4. a kind of ceramic condenser direct-current blocking-up device according to claim 3, is characterized in that: DIN type elastic contact body and core through type ceramic condenser contact site fluting, head design becomes certain slope.
5. according to a kind of ceramic condenser direct-current blocking-up device described in claim 2 and 3, it is characterized in that: described elastic contact body adopts elastomeric beryllium copper.
6. according to a kind of ceramic condenser direct-current blocking-up device described in claim 2 and 3, it is characterized in that: described core through type ceramic condenser adopts pottery baking to be made, its capacitance is 1000PF, withstand voltage is 300VDC, insulation resistance is 3000M Ω, and serviceability temperature scope is-55 DEG C～125 DEG C, inner surface all-tin plating, it is zinc-plated that outer surface is part circumferential surface, and both ends of the surface are not zinc-plated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092467.9U CN203721854U (en) | 2014-03-03 | 2014-03-03 | Ceramic capacitance direct current blocker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092467.9U CN203721854U (en) | 2014-03-03 | 2014-03-03 | Ceramic capacitance direct current blocker |
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| Publication Number | Publication Date |
|---|---|
| CN203721854U true CN203721854U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420092467.9U Expired - Fee Related CN203721854U (en) | 2014-03-03 | 2014-03-03 | Ceramic capacitance direct current blocker |
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| Country | Link |
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| CN (1) | CN203721854U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825072A (en) * | 2014-03-03 | 2014-05-28 | 江苏荣联科技发展股份有限公司 | Ceramic capacitor direct-current breaker |
| CN104600405B (en) * | 2015-01-19 | 2017-04-12 | 西安航天动力研究所 | Over-vacuum water cooling radio frequency transmission line |
-
2014
- 2014-03-03 CN CN201420092467.9U patent/CN203721854U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825072A (en) * | 2014-03-03 | 2014-05-28 | 江苏荣联科技发展股份有限公司 | Ceramic capacitor direct-current breaker |
| CN103825072B (en) * | 2014-03-03 | 2016-02-24 | 江苏荣联科技发展股份有限公司 | Ceramic condenser direct-current blocking-up device |
| CN104600405B (en) * | 2015-01-19 | 2017-04-12 | 西安航天动力研究所 | Over-vacuum water cooling radio frequency transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20180303 |