CN202584846U - Instrument signal cable for intrinsically safe anti-explosion circuit - Google Patents
Instrument signal cable for intrinsically safe anti-explosion circuit Download PDFInfo
- Publication number
- CN202584846U CN202584846U CN 201220127946 CN201220127946U CN202584846U CN 202584846 U CN202584846 U CN 202584846U CN 201220127946 CN201220127946 CN 201220127946 CN 201220127946 U CN201220127946 U CN 201220127946U CN 202584846 U CN202584846 U CN 202584846U
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- cable
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- conductor groups
- instrument signal
- cable core
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Abstract
The utility model discloses an instrument signal cable for an intrinsically safe anti-explosion circuit, which comprises a plurality of conductor groups. Each three conductors outside which insulating layers are respectively coated are twisted into a bundle to form the conductor groups. Refractory layers made by polyester film tape wrapping are respectively coated outside the conductor groups. The conductor groups coated with the refractory layers are twisted into bundles to form a cable core. A wrapping layer is coated outside the cable core. A filling layer made of magnesium oxide ceramic powder is arranged between the cable core and the wrapping layer. A shielding layer, a stainless steel seamless steel tube, an armoring layer, a sheath layer, and an anticorrosion coating layer are sequentially coated outside the filling layer. According to the instrument signal cable for an intrinsically safe anti-explosion circuit, as the stainless steel seamless steel tube is additionally arranged between the shielding layer and the armoring layer, the waterproof properties of the cable can be improved; as the conductor groups are made by twisting the conductors into bundles and the cable core is made by twisting the conductor groups into bundles, the structure compactness of the cable can be improved after twice twisting into bundles; and in addition, the cable is good in refractory properties, good in shielding properties and good in corrosion resistance properties, and the cable is suitable to work in adverse environment.
Description
Technical field:
The utility model relates to the instrument cable field, relates in particular to a kind of Sefe antiexplosion circuit and uses the instrument signal cable.
Background technology:
Along with development of human society and progress of science and technology, make the mankind obtain huge interests and freedom from occurring in nature, various accidents and disaster also take place again and again simultaneously.And in numerous disasters, electric wire is usually played the part of the role of burning things which may cause a fire disaster and blasting fuse, and fire is expanded rapidly; And produce a large amount of smog and poison gas; And damaged valuable electronic instrument and equipment, have a strong impact on withdrawing of fire-fighting and rescue and Field Force, thereby enlarged disaster.For this reason, Halogen, low cigarette, low-poison and combustion-resisting power cable are in great demand, and are widely used in each department of national economy.
The instrument cable of explosion-proof type is applicable to that usually chemical industry, electric power, gas engineering, petrochemical industry, mine etc. exist the occasion of explosion hazard and the occasion that other anti-explosion safeties are had relatively high expectations, and transmission automatic control signal cable has good shielding and interference free performance.
The water resistance of the instrument cable of original explosion-proof type is relatively poor, structural compactness is relatively poor relatively, causes the cable lost of life in use.
The utility model content:
The purpose of the utility model provides a kind of Sefe antiexplosion circuit and uses the instrument signal cable, has solved the problem that cable is in use relatively poor for water resistance in the bigger environment of humidity, structure is compact inadequately.
The utility model technical scheme following:
The Sefe antiexplosion circuit is used the instrument signal cable; Comprise several conductor groups; It is characterized in that: several conductor groups adopt three outsides stranded bunchy formation of conductor of wrap insulate layer respectively; Several conductor group outsides are enclosed with the flame retardant coating of the wrapped formation of mylar tape respectively, and the mutual stranded bunchy of several conductor groups of parcel flame retardant coating constitutes cable core, and the cable core outside is enclosed with lapping layer; Be provided with the packed layer that the magnesia ceramics powder constitutes between cable core and the lapping layer, the described packed layer outside is enclosed with screen, stainless-steel seamless pipe, armour, restrictive coating, corrosion-inhibiting coating successively.
Described Sefe antiexplosion circuit is used the instrument signal cable, it is characterized in that: it is the overlapping wrapped or vertical bag formation of aluminium-plastic tape of 0.05～0.12mm that described screen adopts thickness.
Described Sefe antiexplosion circuit is used the instrument signal cable, it is characterized in that: the copper wire that is provided with two pair twists in the described screen is made drainage thread.
Compared with prior art, the advantage of the utility model is following:
The utility model reasonable in design; Between the screen of cable and armour, have additional the fire resistance characteristic that stainless-steel seamless pipe effectively raises cable; The conductor group is made up of the stranded bunchy of conductor, and cable core is made up of the stranded bunchy of conductor group, and twice stranded bunchy improved the structural compactness of cable; This outer cable has good fire-resistance property, shielding properties, antiseptic property, suits in rugged environment, to work.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Embodiment:
Referring to Fig. 1:
The Sefe antiexplosion circuit is used the instrument signal cable; Comprise several conductor groups; Several conductor groups adopt three outsides conductor 1 stranded bunchy formation of wrap insulate layer 2 respectively; Several conductor group outsides are enclosed with the flame retardant coating 3 of the wrapped formation of mylar tape respectively, and the mutual stranded bunchy of several conductor groups of parcel flame retardant coating 3 constitutes cable core, and the cable core outside is enclosed with lapping layer 4; Be provided with the packed layer 5 that the magnesia ceramics powder constitutes between cable core and the lapping layer 4, packed layer 5 outsides are enclosed with screen 6, stainless-steel seamless pipe 7, armour 8, restrictive coating 9, corrosion-inhibiting coating 10 successively.
Screen is adopted the overlapping wrapped or vertical bag formation of aluminium-plastic tape that 6 use thickness are 0.05～0.12mm.
The copper wire that is provided with two pair twists in the screen 6 is made drainage thread 11.
Claims (3)
1. a Sefe antiexplosion circuit is used the instrument signal cable; Comprise several conductor groups; It is characterized in that: several conductor groups adopt three outsides stranded bunchy formation of conductor of wrap insulate layer respectively; Several conductor group outsides are enclosed with the flame retardant coating of the wrapped formation of mylar tape respectively, and the mutual stranded bunchy of several conductor groups of parcel flame retardant coating constitutes cable core, and the cable core outside is enclosed with lapping layer; Be provided with the packed layer that the magnesia ceramics powder constitutes between cable core and the lapping layer, the described packed layer outside is enclosed with screen, stainless-steel seamless pipe, armour, restrictive coating, corrosion-inhibiting coating successively.
2. Sefe antiexplosion circuit according to claim 1 is used the instrument signal cable, it is characterized in that: it is the overlapping wrapped or vertical bag formation of aluminium-plastic tape of 0.05～0.12mm that described screen adopts thickness.
3. Sefe antiexplosion circuit according to claim 1 is used the instrument signal cable, it is characterized in that: the copper wire that is provided with two pair twists in the described screen is made drainage thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220127946 CN202584846U (en) | 2012-03-29 | 2012-03-29 | Instrument signal cable for intrinsically safe anti-explosion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220127946 CN202584846U (en) | 2012-03-29 | 2012-03-29 | Instrument signal cable for intrinsically safe anti-explosion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202584846U true CN202584846U (en) | 2012-12-05 |
Family
ID=47254234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220127946 Expired - Lifetime CN202584846U (en) | 2012-03-29 | 2012-03-29 | Instrument signal cable for intrinsically safe anti-explosion circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202584846U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903806A (en) * | 2014-03-05 | 2014-07-02 | 安徽华峰电缆集团有限公司 | Flame-retardant power cable |
| CN104867602A (en) * | 2014-02-26 | 2015-08-26 | 安徽红旗电缆集团有限公司 | Marine shielded-armored cable with current-guiding wire |
-
2012
- 2012-03-29 CN CN 201220127946 patent/CN202584846U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867602A (en) * | 2014-02-26 | 2015-08-26 | 安徽红旗电缆集团有限公司 | Marine shielded-armored cable with current-guiding wire |
| CN103903806A (en) * | 2014-03-05 | 2014-07-02 | 安徽华峰电缆集团有限公司 | Flame-retardant power cable |
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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: 20121205 |
|
| CX01 | Expiry of patent term |