CN205428586U - Be used for organic coaxial cable of nuclear detection signal long distance transmission double -shielded - Google Patents
Be used for organic coaxial cable of nuclear detection signal long distance transmission double -shielded Download PDFInfo
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- CN205428586U CN205428586U CN201520894786.6U CN201520894786U CN205428586U CN 205428586 U CN205428586 U CN 205428586U CN 201520894786 U CN201520894786 U CN 201520894786U CN 205428586 U CN205428586 U CN 205428586U
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Abstract
The utility model belongs to the technical field of nuclear, a be used for organic coaxial cable of nuclear detection signal long distance transmission double -shielded is provided, in proper order include outward extremely from the lining that heart yearn, insulating layer, internal shield net, interior insulating sheath, magnetic shield layer, outer shield are netted, outer insulating sheath, internal shield net and outer shield net are the copper mesh grid of plating tin or silver, the iron stainless steel strip of magnetic shield layer for having the magnetic screen ability, magnetic shield layer becomes the electrically conductive shielding layer of the second floor with the outer shield net system. The utility model discloses a difficult problem that receives external disturbance when using traditional individual layer shielding coaxial cable transmission signal easily can be effectively solved, the interference killing feature among the signal transmission process is improved. Simultaneously, this cable also can be used for needs to adopt two way signal transmission's of unit cable inlet wire occasion.
Description
Technical field
This utility model belongs to nuclear technology field, relates to a kind of organic coaxial cable of double shield that can be used for nuclear radiation detector weak signal long-distance transmissions.
Background technology
The signal of nuclear radiation detector output is usually quite faint, and the signal amplitude exported such as the detector of some impulse types is more small enough to fA magnitude at below mV, the current signal of ion-chamber detector output.If such weak signal is after electronics equipment processing and amplifying, output amplitude, intensity can be effectively improved, and transmission is got up the most much easier.But in some occasion, owing to being affected by temperature, external electromagnetic field, radiation field etc., it is impossible to arrange electronics device, then weak signal transmission just can only be used to the place that environmental condition is suitable for.As around nuclear reactor, owing to there is strong neutron, γ irradiation, electronics device is difficult to work long hours.And for example in large-scale radiation chamber, there is strong gamma-rays, also cannot use electronics equipment.Having near the scientific research facility of high-intensity magnetic field at some, electronics equipment also is difficult to normally work.In order to solve these difficulties, the signal transmission generally using coaxial cable to be exported by detector uses the radio-frequency cable transmission signal of 50 ohm to the most local reprocessing, such as a lot of test chambers.But the general for once screen layer of the coaxial cable sold on the market at present, i.e. in the structure of the heart yearn+insulating barrier+conductive layer+sheath transmitting signal, in the outer only one of which metallic conduction face of cable core, as the electric shield net of shielding external interference.Common practice is by this gauze screen both as the earth-return circuit of signal, again as the casing protecting field of equipment.In laboratory conditions, signal carries out short-distance transmission to such cable, or the experiment used time is convenient.But on engineer applied, during such as nuclear power plant reactor power measurement, cable needs through complicated path, carry out distance to lay, the strong electromagnetic sources such as the various large-size machine of approach, electromagnetic switch, such signal transmssion line is easy to import by outside electromagnetic interference, jammer signal earth potential, interference measurement results.Therefore, extreme care during cable laying, on the one hand to avoid the place through there being strong interferers, outside cable, the most also increase gauze screen etc..While it is true, still there will be the interference phenomenons such as shwoot.
Summary of the invention
The purpose of this utility model is contemplated to overcome above-mentioned weak point of the prior art, there is provided one for the nuclear detection signal organic coaxial cable of long-distance transmissions double shield, easily by a difficult problem for external interference when can effectively solve to use traditional single-layer shield coaxial cable transmission signal, improve the capacity of resisting disturbance in signals transmission.Meanwhile, this cable can be used for the occasion needing to use the transmission of unit cable inlet wire two paths of signals.
The purpose of this utility model is achieved by the following technical measures: a kind of for the nuclear detection signal organic coaxial cable of long-distance transmissions double shield, the organic coaxial cable of described double shield, on the basis of traditional single-layer shield coaxial cable, sets up one layer of insulating sheath and one layer of conductive shielding layer.User is in use; using the internal shield close to heart yearn as signal ground, and outermost screen layer can be connected as protecting field with casing, so; outside electromagnetic interference can be imported the earth by outermost screen layer, and the signal ground without internal layer signal loop interferes.
In technique scheme, the organic coaxial cable of described double shield includes heart yearn, insulating barrier, inner shield net, interior insulating sheath, magnetic masking layer, external shield net, outer insulation jacket the most successively, described inner shield net and external shield net are the copper mesh grid of plating stannum or silver, and described magnetic masking layer is the irony stainless steel band with shielding ability.Magnetic masking layer and external shield net composition second layer conductive shielding layer, both maskable electromagnetic wave, again maskable magnetic field, it is to avoid the interference to transmission signal of the extraneous high-intensity magnetic field so that this cable can also be laid in high magnetic field area.Meanwhile, still prevent internal electromagnetic wave signal to leak out.
In technique scheme, use commercially available single coaxial connector for convenience, described interior insulating sheath is organic material with outer insulation jacket and makes, interior insulating sheath is identical with outer insulation jacket material, after making to peel off cable outer insulation jacket and external shielding layer, internal layer is alternatively arranged as independent coaxial cable and uses, and convenient and conventional radio frequency connector is fixed.Meanwhile, after ectonexine screen layer is linked together, it is alternatively arranged as microwave cable and uses, transmit microwave signal.
This utility model is used for the nuclear detection signal organic coaxial cable of long-distance transmissions double shield, simple in construction, lay conveniently, easily by a difficult problem for external interference when can effectively solve to use traditional single-layer shield coaxial cable transmission signal, improve the capacity of resisting disturbance in signals transmission.Meanwhile, this cable can be used for the occasion needing to use the transmission of unit cable inlet wire two paths of signals.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment of the coaxial organic cable of double shield in this utility model.
Fig. 2 is to use conventional single screen to cover a kind of embodiment of radio frequency connector by after external shielding layer stripping in this utility model.
Wherein: 1. heart yearn, 2. insulating barrier, 3. inner shield net, 4. in insulating sheath, 5. magnetic masking layer, 6. external shield net, 7. outer insulation jacket, 8. conventional single screen covers radio frequency connector, 9. metal clasp.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the utility model will be further described.
As it is shown in figure 1, be a kind of embodiment of the coaxial organic cable of double shield in this utility model.Wherein, heart yearn 1 is outer is ground floor insulating barrier 2, and the material of this insulating barrier 2 and physical dimension can require to select according to using environment, cable properties, to reach to use temperature, characteristic impedance, distribution capacity and distributed inductance to reach use demand.Inner shield net 3, interior insulating sheath 4, magnetic masking layer 5, external shield net 6, outer insulation jacket 7 it is followed successively by outside insulating barrier 2, described inner shield net 3 and external shield net 6 are the copper mesh grid of plating stannum or silver, and described magnetic masking layer 5 is the irony stainless steel band with shielding ability.Magnetic masking layer 5 and external shield net 6 form second layer conductive shielding layer, both maskable electromagnetic wave, again maskable magnetic field, still prevent internal electromagnetic wave signal and leak out.Described interior insulating sheath 4 is organic material with outer insulation jacket 7 and makes, and interior insulating sheath 4 is identical with outer insulation jacket 7 material.
As in figure 2 it is shown, for using conventional single screen to cover a kind of embodiment of radio frequency connector after the external shielding layer of cable is peeled off by this utility model.External shield net 6 and the magnetic masking layer 5 of organic for the present embodiment double shield coaxial cable are peeled off one section, make in cable after exposed one section of insulating sheath 4, common single screen can be covered radio-frequency cable be connected with a part for screened cable, owing to interior insulating sheath 4 is identical with the material of outer insulation jacket 7, therefore can also serve as oversheath and use.And after external shielding layer i.e. external shield net 6 and magnetic masking layer 5 are stripped out, after metal clasp 9 can be used to be connected, access the earth, protecting field when transmitting as signal with peripheral hardware earth lead.
In addition to using the adapter using method shown in Fig. 2, the coaxial organic cable of this double shield also can use double coaxial radio frequency connector, the interior coaxial metal ring of inner shield net 3 with double coaxial radio-frequency connectors is connected, external shielding layer i.e. external shield net 6 and magnetic masking layer 5 are connected with the shell of double coaxial radio-frequency connectors.
The content not being described in detail in this specification, belongs to prior art known to those skilled in the art.
Claims (1)
1. one kind is used for the nuclear detection signal organic coaxial cable of long-distance transmissions double shield, it is characterized in that: the organic coaxial cable of described double shield includes heart yearn the most successively, insulating barrier, inner shield net, interior insulating sheath, magnetic masking layer, external shield net, outer insulation jacket, described inner shield net and external shield net are the copper mesh grid of plating stannum or silver, interior insulating sheath is identical with outer insulation jacket material, it is organic material to make, described magnetic masking layer is the irony stainless steel band with shielding ability, wherein inner shield net composition ground floor conductive shielding layer, magnetic masking layer and external shield net composition second layer conductive shielding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520894786.6U CN205428586U (en) | 2015-11-11 | 2015-11-11 | Be used for organic coaxial cable of nuclear detection signal long distance transmission double -shielded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520894786.6U CN205428586U (en) | 2015-11-11 | 2015-11-11 | Be used for organic coaxial cable of nuclear detection signal long distance transmission double -shielded |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205428586U true CN205428586U (en) | 2016-08-03 |
Family
ID=56518666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520894786.6U Expired - Fee Related CN205428586U (en) | 2015-11-11 | 2015-11-11 | Be used for organic coaxial cable of nuclear detection signal long distance transmission double -shielded |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205428586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400114A (en) * | 2021-12-14 | 2022-04-26 | 中车永济电机有限公司 | High-voltage-resistance double-shielding wire harness set suitable for IGBT control signal transmission |
-
2015
- 2015-11-11 CN CN201520894786.6U patent/CN205428586U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400114A (en) * | 2021-12-14 | 2022-04-26 | 中车永济电机有限公司 | High-voltage-resistance double-shielding wire harness set suitable for IGBT control signal transmission |
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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: 20160803 Termination date: 20161111 |