CN201435259Y - Moisture barrier shielding fire-retardant communication cable with 200 pairs and less than 200 pairs for coal mines - Google Patents
Moisture barrier shielding fire-retardant communication cable with 200 pairs and less than 200 pairs for coal mines Download PDFInfo
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- CN201435259Y CN201435259Y CN2009203023194U CN200920302319U CN201435259Y CN 201435259 Y CN201435259 Y CN 201435259Y CN 2009203023194 U CN2009203023194 U CN 2009203023194U CN 200920302319 U CN200920302319 U CN 200920302319U CN 201435259 Y CN201435259 Y CN 201435259Y
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Abstract
The utility model discloses a moisture barrier shielding fire-retardant communication cable with 200 pairs and less than 200 pairs for coal mines. The moisture barrier shielding fire-retardant communication cable comprises copper conductors, insulating layers and a fire-retardant oversheath layer from inside to outside; the outsides of the copper conductors are coated with the insulating layers made of a polyolefin material in an extruding way to form insulated conductors; no clearance exists between the copper conductors and the polythene insulating layers; the insulated conductors are twisted into a cable of which the outside is coated with a coating belt; the outside of the coating belt is coated with an aluminium-plastic composite moisture barrier shielding layer; the outside of the aluminium-plastic composite moisture barrier shielding layer is coated with the fire-retardant oversheath layer in an extruding way; and no clearance exists between the aluminium-plastic composite moisture barrier shielding layer and the fire-retardant oversheath layer. The moisture barrier shielding fire-retardant communication cable can prevent moisture content and moist air from entering, improves the service life, has the shielding function to avoid signal distortion and false alarm when working, and can meet the operating requirements of the coal mines in aspects of the number of pairs, themoisture barrier performance, the shielding performance and the fire-retardant performance.
Description
Technical field
The utility model relates to a kind of cable, particularly a kind of flame-retardant communication cable.
Background technology
Significantly raising along with coal in China output, can not satisfy the demand with the signal transmission and the gas monitor of flame-retardant communication cable in the colliery of little logarithm, and it is also more and more higher to the requirement of the retaining of cable tide performance, shielding properties and fire resistance, in this case, the mining flame-retardant telecommunication cable of heavy in section, many logarithms is developed in an urgent demand, and improves one's methods will having better aspect retaining tide performance, shielding properties and the fire resistance of cable.
The defective that existing colliery exists with flame retardant cable:
Only stipulated the specification requirement of 5 pairs and following colliery in the industry standard (MT818.14-1999) that State Administration of Coal Industry works out with flame-retardant communication cable, and the industry standard (YD/T322-96) that the Ministry of Posts and Telecommunications works out does not satisfy the requirement of the fire-retardant grade of colliery downhole anti-explosion though max log can reach 2400 pairs.Because coal mine yield increase gradually, the signal transmission also increases thereupon, the communication cable for mine of little logarithm just needs many overlapping the laying of cable when laying, may cause the natural attenuation frequency of cable identical, cause the mutual interference of signal transmission phase, thereby false alarm can take place, and can strengthen construction intensity during many overlapping laying, take the space of mine, influence the underground work fail safe.
On the other hand, the retaining of existing cable tide performance and shielding properties are not good enough, and cable produces distorted signals and false alarm in the down-hole moisture-sensitive.Because the product standard of telecommunication cable is only stipulated the average thickness and the thinnest dot thickness of sheath, thereby the pull-tube type structure is all adopted in the oversheath production of cable manufacturer, the sheath of pull-tube type structure is pine relatively, the space is arranged between insulated wire cores, air and damp vapour easily vertically circulate along cable, influence the anti-flammability and the damp proof insulation of cable.
Therefore, the colliery is badly in need of at logarithm, is kept off and will further improve aspect damp performance, shielding properties and the fire resistance with flame-retardant communication cable, to reduce because the loss that cable fault was caused.
The utility model content
In order to overcome the deficiency of existing colliery with flame-retardant communication cable, the utility model provides a kind of colliery with 200 pairs and following retaining tide shielding flame-retardant communication cable, solve telecommunication cable at logarithm, keep off and all will satisfy the technical problem that the colliery requires aspect damp performance, shielding properties and the fire resistance.
The technical scheme that its technical problem that solves the utility model adopts is:
There are copper conductor, insulating barrier and fire-retardant external sheath layer in a kind of colliery from the inside to the outside with 200 pairs and following retaining tide shielding flame-retardant communication cable, it is characterized in that:
The outside extruding of described copper conductor is coated with the insulating barrier of being made by polyolefine material, forms insulated wire cores, no any gap between copper conductor and the polyethylene layer; The stranded cable that becomes of insulated wire cores, the cable outside is enclosed with band 3, and band 3 outsides are surrounded by aluminum-plastic composite and keep off damp screen; Aluminum-plastic composite is kept off the outside extruding of damp screen and is coated with fire-retardant external sheath layer, and aluminum-plastic composite is kept off no any gap between damp screen and the fire-retardant external sheath layer.
Described aluminum-plastic composite is kept off the aluminium face that covers of damp screen can be towards the inboard.
It can be to be formed by the overlapping wrapped or vertical bag of aluminium-plastic tape that described aluminum-plastic composite is kept off damp screen.
Described fire-retardant external sheath layer can be the flame-proof polyvinyl chloride protective cover material.
Described aluminum-plastic composite is kept off damp screen outside can be coated with sheath, and the sheath outside is coated with armour, and the extruding of armour outside is coated with fire-retardant external sheath layer.
Described insulated wire cores can and be pushed the insulating barrier that is coated on these two copper conductors outsides by two copper conductors and be formed.
The beneficial effects of the utility model are as follows:
1, the electrical property of cable and mechanical performance satisfy the requirement of industry standard fully.
2, polyolefin insulation not only has excellent electric performance and resistance to chemical corrosion, and because material proportion is little, thus also have in light weight, easy for installation, do not laid advantage such as drop restriction.And has favorable waterproof property.
3, many logarithms cable pitch difference can be avoided the mutual interference of signal phase, the enhancing signal transmission, and polyolefine material is in dielectric, because the relative dielectric constant minimum when therefore being used for the insulation of telecommunication cable, also has fabulous stable signal transmission.
4, telecommunication cable is when adopting aluminum-plastic composite to keep off damp screen, and not only interference free performance is very good, but also can keep off tide.Be applicable to the inclined gallery and the gallery of comparison humidity.
5, the armouring flame-retardant communication cable can resist bigger mechanical external force under the prerequisite that guarantees product performance.
6, the fire resistance of cable is good, charing height≤2.5m during the bunchy burning.
Cable specification of the present invention extends to 200 pairs, aspect logarithm, replace the overlapping of many cables to lay with a cable, because the frequency of a cable when making is different, just avoided the mutual interference problem of signal when transmission, laying of single cable can reduce construction intensity, save the mine space, improve the underground work safety guarantee, satisfy the construction needs of modernized mine.
The insulating layer material of the utility model cable adopts polyolefine material, extrusion equipment adopts overall plastic local telephone network insulation series connection production line, this production line adopts system controlled by computer, and show, follow the tracks of the particulars in the production process at any time, can carry out the technology adjustment to the abnormal conditions in the production process at any time, the quality of product is guaranteed.
Insulated wire cores strand to the time adopt different twisting pitch, avoided the cable natural attenuation identical and cause the mutual interference of signal phase.
For making the damp waterproof of the more effective retaining of cable, employing overlapping wrapped aluminum-plastic composite behind the stranded stranding of insulated wire cores is kept off damp screen, has effectively played the effect that waterproof blocks water.Stop entering of moisture and moisture, improve the useful life of cable, and play shielding action, the bending radius of cable is adapted at the down-hole and lays generation distorted signals and false alarm when avoiding the cable operation simultaneously.Adopt polythene material to make moistureproof inner sheath,, improved protection against the tide, the protected against the effects of immersion performance of cable, but make cable still permanent load use under wet environment because polyethylene has excellent water resistance.
The utility model adopts the outer jacket of high flame retardant section bar material as cable, the oxygen index of this outer jacket 〉=40, and during cable fire, fire-retardant external sheath layer can charing become shell, forms fire-retardant barrier together, and the combustibles (PE) of cable inside are isolated from the outside out; The time can decompose again in burning and to discharge steam, play the effect of cooling.Simultaneously by the design extrusion die, change the expressing technique of traditional oversheath, the employing pressure type is extruded, make sheath material be filled into the gap of insulated wire cores, with the inner tight combination, make atmosphere draught-free during cable fire because of the centre is very close to each other, the anti-flammability of cable is had greatly improved, solve cable simultaneously and vertically advanced the problem of damp vapour, and adopted pressure type to extrude cable outward appearance rounding, attractive in appearance.Avoided because of the oversheath of pull-tube type structure pine relatively, and the space is arranged between insulated wire cores, air and damp vapour easily vertically circulate along cable, influence the anti-flammability and the damp proof insulation of cable.
The insulating barrier of the utility model cable and external sheath layer all adopt the squash type structure.Oversheath not only has the favorable mechanical performance, but also has good flame retardant property, plays and both protects the cable internal part, again double effects that can be fire-retardant.Aspect fire resistance, pass through the design extrusion die, change traditional expressing technique, the employing pressure type is extruded, make sheath material be filled into the gap and the inner tight combination of insulated wire cores, anti-flammability is had greatly improved, solved the problem that cable vertically advances damp vapour simultaneously, and adopt pressure type to extrude cable outward appearance rounding, attractive in appearance, have excellent flame-retardant, applicable to the place higher to the safety of coal mines reliability requirement.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the structural representation of the utility model embodiment two.
Fig. 3 is the FB(flow block) of manufacture method of the present invention.
Reference numeral: 1-copper conductor, 2-insulating barrier, 3-band, 4-aluminum-plastic composite are kept off damp screen, the fire-retardant external sheath layer of 5-, 6-sheath, 7-armour.
Embodiment
Embodiment one is referring to shown in Figure 1, and there are copper conductor 1, insulating barrier 2 and fire-retardant external sheath layer 5 in this colliery from the inside to the outside with 200 pairs and following retaining tide shielding flame-retardant communication cable.The structure of the conductor of cable and size conforms standard GB/T3956.
The outside extruding of described copper conductor 1 is coated with the insulating barrier of being made by polyolefine material 2, form insulated wire cores, insulated wire cores in the present embodiment is made up of the insulating barrier 2 that two copper conductors 1 and extruding are coated on these two copper conductor outsides, and insulation thickness meets MT818.14-1999 and Q/SC 011-2007 stipulates accordingly.The polyolefin insulation Specifeca tion speeification meets HG2-1389.No any gap between copper conductor and the polyethylene layer; Insulated wire cores is totally 30 pairs in the present embodiment, the stranded cable that becomes, insulated wire cores strand to the time adopt different twisting pitch.Certainly, in other embodiments, the cable specification also extends to 200 pairs, and structure has expanded 7/0.37mm, 7/0.43mm, 7/0.52mm, 1/1.0mm, 1/1.13mm, 1/1.38mm structure on the basis that keeps 7/0.28mm and 1/0.8mm.
The cable outside is enclosed with band 3, and the overlapping aluminum-plastic composite that is surrounded with in band 3 outsides is kept off damp screen 4, and it is that lap is not less than 20% of bandwidth by overlapping wrapped the forming of aluminium-plastic tape that described aluminum-plastic composite is kept off damp screen 4, and minimum must not be lower than 5mm.The aluminium that covers that described aluminum-plastic composite is kept off damp screen 4 faces to the inside.
Aluminum-plastic composite is kept off damp screen outside and is coated with fire-retardant external sheath layer.Adopt polythene material to make moistureproof sheath.
Aluminum-plastic composite is kept off the extruding of damp screen outside and is coated with fire-retardant external sheath layer 5, and described fire-retardant external sheath layer 5 adopts blue polyvinyl chloride cable material, and increases fire retardant and make oxygen index 〉=40%, and its thickness meets the regulation of 6B2952.Aluminum-plastic composite is kept off no any gap between damp screen and the fire-retardant external sheath layer.
The colliery is will conductor to adopt power frequency spark equipment behind (if conductor is lay configuration advanced column conductor strand system) extruded insulation with the production technology of 200 pairs and following retaining tide shielding flame-retardant communication cable, dried the having a try of the spark of finishing the cable insulation core tested, adopt pair twist equipment, the strand of finishing insulated wire cores is to process, adopt stranding equipment, finish the stranding of cable core, wrapped or vertical bag aluminum-plastic composite is kept off damp screen, increase the humidity resistance that blocks water of cable, if armoured cable also needs to squeeze sheath and carry out armouring, referring to Fig. 2, among the embodiment two, aluminum-plastic composite is kept off damp screen 4 outsides and is coated with sheath 6, sheath 6 outsides are coated with armour 7, the extruding of armour 7 outsides is coated with fire-retardant external sheath layer 5, adopts extrusion equipment, finishes the sheath extrusion of cable.
Referring to Fig. 3, the manufacture method step of embodiment two is as follows:
A, selection copper conductor 1.
B, the method for pushing in the employing of copper conductor outside coat polyethylene layer 2, do not have the gap between copper conductor and the polyethylene layer.
C, employing power frequency spark equipment, dried the having a try of the spark of finishing the cable insulation core tested.
D, the copper conductor that will wrap insulating barrier are twisted into cable, logarithm≤200 pair, cable outside parcel band 3.
E, coat aluminum-plastic composite in band 3 outsides and keep off damp screen 4; It is with overlapping wrapped the forming of aluminium-plastic tape that described aluminum-plastic composite is kept off damp screen 4.
F, coating polythene inner 6.
G, coating armour 7; Described armour 7 adopts the wrapped or vertical bag of double-deck galvanized steel strip or adopts process the japanning wrapped or vertical bag of antiseptic steel band or adopt the wrapped or vertical bag of zinc-plated low-carbon (LC) round steel wire.
The method of h, employing extruding coats fire-retardant external sheath layer 5, and armour or aluminum-plastic composite are kept off between damp screen and the fire-retardant external sheath layer does not have the gap.
The manufacture method of the foregoing description one only need be cancelled above-mentioned steps e and f and get final product.
Claims (6)
1. there are copper conductor (1), insulating barrier (2) and fire-retardant external sheath layer (5) in a colliery from the inside to the outside with 200 pairs and following retaining tide shielding flame-retardant communication cable, it is characterized in that:
The outside extruding of described copper conductor (1) is coated with the insulating barrier of being made by polyolefine material (2), forms insulated wire cores, no any gap between copper conductor and the polyethylene layer; The stranded cable that becomes of insulated wire cores, the cable outside is enclosed with band (3), and band (3) outside is surrounded by aluminum-plastic composite and keeps off damp screen (4); Aluminum-plastic composite is kept off the outside extruding of damp screen and is coated with fire-retardant external sheath layer (5), and aluminum-plastic composite is kept off no any gap between damp screen and the fire-retardant external sheath layer.
2. colliery according to claim 1 is with 200 pairs and following retaining tide shielding flame-retardant communication cable, and it is characterized in that: the aluminium that covers that described aluminum-plastic composite is kept off damp screen (4) faces to the inside.
3. colliery according to claim 1 is with 200 pairs and following retaining tide shielding flame-retardant communication cable, and it is characterized in that: it is to be formed by the overlapping wrapped or vertical bag of aluminium-plastic tape that described aluminum-plastic composite is kept off damp screen (4).
4. colliery according to claim 1 is with 200 pairs and following retaining tide shielding flame-retardant communication cable, and it is characterized in that: described fire-retardant external sheath layer (5) is the flame-proof polyvinyl chloride protective cover material.
5. colliery according to claim 1 is with 200 pairs and following retaining tide shielding flame-retardant communication cable, it is characterized in that: described aluminum-plastic composite is kept off damp screen (4) outside and is coated with sheath (6), sheath (6) outside is coated with armour (7), and the extruding of armour (7) outside is coated with fire-retardant external sheath layer (5).
6. colliery according to claim 1 is characterized in that with 200 pairs and following retaining tide shielding flame-retardant communication cable: described insulated wire cores is made up of the insulating barrier (2) that two copper conductors (1) and extruding are coated on outside these two copper conductors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203023194U CN201435259Y (en) | 2009-04-17 | 2009-04-17 | Moisture barrier shielding fire-retardant communication cable with 200 pairs and less than 200 pairs for coal mines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203023194U CN201435259Y (en) | 2009-04-17 | 2009-04-17 | Moisture barrier shielding fire-retardant communication cable with 200 pairs and less than 200 pairs for coal mines |
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| Publication Number | Publication Date |
|---|---|
| CN201435259Y true CN201435259Y (en) | 2010-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203023194U Expired - Lifetime CN201435259Y (en) | 2009-04-17 | 2009-04-17 | Moisture barrier shielding fire-retardant communication cable with 200 pairs and less than 200 pairs for coal mines |
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| Country | Link |
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| CN (1) | CN201435259Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254600A (en) * | 2011-05-06 | 2011-11-23 | 苏州市吴江特种电缆二厂有限公司 | Unshielded digital horizontal twisted pair cable |
| CN106231708A (en) * | 2016-08-30 | 2016-12-14 | 江苏鹏申高温线缆有限公司 | Solar energy special self-control temperature ribbon heater and production technology thereof |
-
2009
- 2009-04-17 CN CN2009203023194U patent/CN201435259Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254600A (en) * | 2011-05-06 | 2011-11-23 | 苏州市吴江特种电缆二厂有限公司 | Unshielded digital horizontal twisted pair cable |
| CN106231708A (en) * | 2016-08-30 | 2016-12-14 | 江苏鹏申高温线缆有限公司 | Solar energy special self-control temperature ribbon heater and production technology thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENYANG CHANGSHUN CABLE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: CHEN LIANQING Effective date: 20101216 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20101216 Address after: 110121 No. 12 West Hangzhou Road, Shenyang, Liaoning, Shenbei New Area Patentee after: SHENYANG CHANGSHUN CABLE MANUFACTURING CO., LTD. Address before: 110121 No. 12 West Hangzhou Road, Shenyang, Liaoning, Shenbei New Area Patentee before: Chen Lianqing |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100331 |
|
| CX01 | Expiry of patent term |