CN201435260Y - Moisture barrier shielding fire-retardant communication cable for coal mines - Google Patents

Moisture barrier shielding fire-retardant communication cable for coal mines Download PDF

Info

Publication number
CN201435260Y
CN201435260Y CN2009203023283U CN200920302328U CN201435260Y CN 201435260 Y CN201435260 Y CN 201435260Y CN 2009203023283 U CN2009203023283 U CN 2009203023283U CN 200920302328 U CN200920302328 U CN 200920302328U CN 201435260 Y CN201435260 Y CN 201435260Y
Authority
CN
China
Prior art keywords
retardant
fire
cable
outside
communication cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009203023283U
Other languages
Chinese (zh)
Inventor
陈连庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENYANG CHANGSHUN CABLE MANUFACTURING CO., LTD.
Original Assignee
陈连庆
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 陈连庆 filed Critical 陈连庆
Priority to CN2009203023283U priority Critical patent/CN201435260Y/en
Application granted granted Critical
Publication of CN201435260Y publication Critical patent/CN201435260Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Abstract

The utility model relates to a moisture barrier shielding fire-retardant communication cable 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 two pairs and twisted into a cable of whichthe 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, hasthe 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, the moisture barrier performance, the shielding performance and the fire-retardant performance.

Description

The colliery shields flame-retardant communication cable with the retaining tide
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 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 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; Totally 2 pairs of insulated wire cores, the stranded cable that becomes, the cable outside coats band, and the band outside is surrounded by aluminum-plastic composite and keeps 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 insulated wire cores can and be pushed the insulating barrier that is coated on this root copper conductor outside by a copper conductor 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.
The utility model replaces the overlapping of many cables to lay with a cable aspect logarithm, 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 colliery with retaining tide shielding flame-retardant communication cable.
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-.
Embodiment
Embodiment 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 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, forms insulated wire cores, and insulated wire cores is made up of the insulating barrier 2 that a copper conductor 1 and extruding are coated on this root copper conductor outside.Insulation thickness meets MT818.14-1999 and Q/SC 011-2007 stipulates accordingly.The polyolefin insulation Specifeca tion speeification meets H62-1389.No any gap between copper conductor and the polyethylene layer; Totally 2 pairs of insulated wire cores, the stranded cable that becomes, insulated wire cores strand to the time adopt different twisting pitch.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 coats 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 GB2952.Aluminum-plastic composite is kept off no any gap between damp screen and the fire-retardant external sheath layer.
This colliery is characterized in that with keeping off the damp manufacture method that shields flame-retardant communication cable step 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, will wrap the copper conductor strand of insulating barrier to becoming cable, 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.
The method of f, employing extruding coats fire-retardant external sheath layer 5, and aluminum-plastic composite is kept off between damp screen and the fire-retardant external sheath layer does not have the gap.
The colliery is to adopt power frequency spark equipment behind conductor (if conductor is a lay configuration advanced person column conductor strand system) extruded insulation with the production technology of 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, adopt extrusion equipment, finish the sheath extrusion of cable.

Claims (5)

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 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; Totally 2 pairs of insulated wire cores, the stranded cable that becomes, the cable outside coats 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 shields flame-retardant communication cable with the retaining tide, 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 shields flame-retardant communication cable with the retaining tide, 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 shields flame-retardant communication cable with the retaining tide, 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 shields flame-retardant communication cable with the retaining tide, it is characterized in that: described insulated wire cores is made up of the insulating barrier (2) that a copper conductor (1) and extruding are coated on this root copper conductor outside.
CN2009203023283U 2009-04-17 2009-04-17 Moisture barrier shielding fire-retardant communication cable for coal mines Expired - Lifetime CN201435260Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009203023283U CN201435260Y (en) 2009-04-17 2009-04-17 Moisture barrier shielding fire-retardant communication cable for coal mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009203023283U CN201435260Y (en) 2009-04-17 2009-04-17 Moisture barrier shielding fire-retardant communication cable for coal mines

Publications (1)

Publication Number Publication Date
CN201435260Y true CN201435260Y (en) 2010-03-31

Family

ID=42054075

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009203023283U Expired - Lifetime CN201435260Y (en) 2009-04-17 2009-04-17 Moisture barrier shielding fire-retardant communication cable for coal mines

Country Status (1)

Country Link
CN (1) CN201435260Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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
CN112420251A (en) * 2019-08-23 2021-02-26 日立金属株式会社 Cable for movable part
CN114822974A (en) * 2022-04-24 2022-07-29 深圳讯诺科技有限公司 High-speed core wire and cable

Cited By (4)

* Cited by examiner, † Cited by third party
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
CN112420251A (en) * 2019-08-23 2021-02-26 日立金属株式会社 Cable for movable part
CN114822974A (en) * 2022-04-24 2022-07-29 深圳讯诺科技有限公司 High-speed core wire and cable
CN114822974B (en) * 2022-04-24 2024-02-06 深圳讯诺科技有限公司 High-speed core wire and cable

Similar Documents

Publication Publication Date Title
CN201112005Y (en) Weatherability type explosion-proof signal cable for coal mine methane monitoring system
CN103310893B (en) High-performance cable for construction
CN201435260Y (en) Moisture barrier shielding fire-retardant communication cable for coal mines
CN220065223U (en) Anti-extrusion anti-torsion photoelectric integrated fire-proof cable
CN203338837U (en) High-performance construction cable
CN201435259Y (en) Moisture barrier shielding fire-retardant communication cable with 200 pairs and less than 200 pairs for coal mines
CN202134273U (en) Flame-retardant high temperature-resistant intrinsically safe computer cable
CN216817896U (en) Deformation-resistant armored insulating power cable
CN201402667Y (en) High voltage power supply and distribution power cable
CN101650987B (en) Flaming-retardant communication cable for 200 pairs and less than 200 pairs of tidal barrier and shielding coal mines and preparation method thereof
CN213958659U (en) Multifunctional reinforced overhead insulated cable
CN205810400U (en) LSOH anti-flaming fire-resistant ground shield photoelectric compound cable
CN104240802A (en) Flexible cable for intrinsic safety DCS
CN209087424U (en) A kind of branch cable
CN103474159B (en) Movable self-bearing high-flame retardance metallic shield monitoring flexible cable for coal mine
CN203858908U (en) Power cable for cross-river tunnel
CN208189247U (en) A kind of appliance equipment installation cable
CN112885524A (en) Double-flame-retardant power cable
CN203444838U (en) Cable for coal mines
CN206541661U (en) A kind of polyvinyl chloride insulation sheath fireproof power cable
CN203480909U (en) Movable self-supporting high-flame retardant metal sheathed monitor-type flexible cable for coal mine
CN212907199U (en) Composite waterproof power cable
CN218069420U (en) Strong electromagnetic interference preventing environment-friendly flame-retardant fire-resistant computer control cable
CN219553260U (en) Torsion-resistant cable
CN214671942U (en) B1-grade flame-retardant flexible fireproof cable for subway

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, Liaoning, Shenbei New Area

Patentee before: Chen Lianqing

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20100331