CN103943267A - Multifunctional mining intrinsic safety cable and processing method thereof - Google Patents
Multifunctional mining intrinsic safety cable and processing method thereof Download PDFInfo
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- CN103943267A CN103943267A CN201410196433.9A CN201410196433A CN103943267A CN 103943267 A CN103943267 A CN 103943267A CN 201410196433 A CN201410196433 A CN 201410196433A CN 103943267 A CN103943267 A CN 103943267A
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Abstract
The invention relates to a multifunctional mining intrinsic safety cable and a processing method thereof. The multifunctional mining intrinsic safety cable comprises a stainless steel central channel pipe and is wrapped by a first flame retardant layer and an insulating layer, wherein a reversely-twisted stranded control cable, a data signal cable, an optical fiber cable and multiple power cables are arranged on the outer side of the insulating layer, a second flame retardant layer wraps the reversely-twisted stranded control cable, the data signal cable, the optical fiber cable and the power cables, water retaining fillers are filled between the second flame retardant layer and the reversely-twisted stranded control cable, the data signal cable, the optical fiber cable and the power cables, and a stainless steel sheath is arranged on the surface of the second flame retardant layer. The multifunctional mining intrinsic safety cable has the advantages of integrating all of cables under a mine, achieving overall protection, being small in size, being provided with the stainless steel central channel pipe and the stainless steel sheath on the outer side and capable of monitoring indexes in a well, being prevented from being in contact with the underground environment and effectively preventing explosion.
Description
Technical field
The present invention relates to a kind of mining multifunctional intrinsic safety cable and processing method thereof.
Background technology
At present no matter China be that under coal ore deposit, metallurgical mine, to select cable substantially to have following several: for down-hole provides power cable, transmits the control cables of aboveground underground signal and the data-signal cable of monitoring production system sensing data.
Under conventional well, use cable, single the laying of general multiple cable, the area that takes up room is larger, because residing environmental condition is more special, particularly the low-voltage cable in Power supply system is easily pounded or extruding and impaired, add and gas, the many static that easily produces of coal dust touch opportunity, therefore, easily cause ignition of cable, the one, extraneous burning things which may cause a fire disaster causes catching fire: inclement condition under coal mine is (as high in temperature, high humidity, weak heat-dissipating etc.), cause the easy fault of electric equipment to be damaged, cause electric equipment burning itself, thereby ignite the cable that is connected with electric equipment or be laid in cable around, initiation fire, the 2nd, cable overcurrent cause electric cable heating catch fire: for example armoured cable in use insulator be mechanically damaged, can cause between cable phase line or phase line and steel armour between insulation breakdown and there is electric arc, cause insulating material and the cable jacket catching fire of cable, Plastic-sheathed Cable and shielded type cable, owing to not preventing the reliably protecting of mechanical failure, are subject to the damage of rock, coal-cutting machinery and instrument, cause aqueous vapor and dust to infiltrate cable inside, and then the initiation fire that is short-circuited, in the time that equipment fault causes electric current to increase suddenly, electromagnetic starter and feeding switch are failure to actuate, and cause cable temperature sharply to rise, and cause insulation breakdown, initiation fire, the 3rd, cable is aging, the performances such as insulation, withstand voltage, conveyance capacity reduce: cable works overloadingly for a long time, can cause decreasing insulating even to lose insulation property, causing the insulating barrier of cable to puncture catches fire, simultaneously, also can cause the electric accident such as gas, coal-dust explosion, cause serious consequence.Existing cable is difficult in maintenance, and self does not have surveillance and control measure cable, so greatly reduced the coefficient of safety of down-hole.
Summary of the invention
The object of this invention is to provide a kind of explosion-proof, anticorrosion, low smoke and zero halogen, mining multifunctional intrinsic safety cable and processing method thereof that fire resistance is good, the problem existing to solve existing product, monitor and prevent cable surprisingly to burn, improve downhole safety coefficient, while conveniently having an accident, personnel are given first aid to.
The object of the invention is to be achieved through the following technical solutions:
A kind of mining multifunctional intrinsic safety cable, its special character is: comprise stainless steel central passage pipe, stainless steel central passage tube-surface is surrounded with the first flame retardant coating, the first flame retardant coating outside is provided with insulating barrier, insulating barrier outside is provided with the stranded control cables of back twist, data-signal cable, fiber optic cables and power cable, the control cables that back twist is stranded, data-signal cable, fiber optic cables and multiple power cable outside are surrounded with the second flame retardant coating, the control cables that the second flame retardant coating and described back twist are stranded, data-signal cable, between fiber optic cables and power cable, be filled with the filler that blocks water, the second flame retardant coating surface is provided with stainless steel sheath.
Further, described power cable is made up of many insulated wire cores.
Described control cables comprises 2～7 stranded insulated wire cores, and the insulated wire cores outside of control cables is provided with screen and restrictive coating.
Described insulated wire cores is followed successively by oxygen-free copper flexible conductor, flame retardant coating and insulating barrier from the inside to the outside.
Described data-signal cable comprises the insulation shielding core that one or more is stranded, described one or more stranded insulation shielding core outside is provided with screen and is extruded with restrictive coating, described insulation shielding core is stranded by core pair twist in a pair of insulation, insulation interior lines core inner is oxygen-free copper flexible conductor, oxygen-free copper flexible conductor surface is extruded with insulating barrier, and the stranded interior core of the insulation outside of described pair twist is provided with screen.
The insulated wire cores of power cable is 3～5.
A kind of mining multifunctional intrinsic safety cable processing method, its special character is, comprises the following steps:
1) stainless steel band longitudinal seam welding is drawn into stainless steel central passage pipe;
2) at wrapped the first flame retardant coating of stainless steel central passage tube outer surface, extrude a layer insulating simultaneously;
3) according to the actual requirement of cable, manufacture control cables, data-signal cable and the power cable of dimension, model, select corresponding fiber optic cables, centered by stainless steel central passage pipe, by four kinds of cables around stainless steel central passage pipe back twist twisted synthesizing cable;
4) select the filler that blocks water to fill the gap between control cables, data-signal cable, fiber optic cables and power cable, make cable rounding, tight;
5) wrapped the second flame retardant coating outside control cables, data-signal cable, fiber optic cables and power cable, then carries out insulation resistance detection and voltage test, enters next step after qualified;
6) press width and the thickness of the selected stainless steel band of laying up diameter, longitudinal joint argon arc welding, the drawing one-shot forming simultaneously of vertical bag cable made stainless steel sheath and stainless steel sheath carried out to flaw detection;
7) carry out conductor resistance, insulation resistance, alternating voltage and structural testing, judge that stranding dispatches from the factory after qualified.
Further, step 3) comprises the following steps:
1) select oxygen-free copper flexible conductor, wrapped one deck flame retardant coating also extrudes a layer insulating and forms the insulated wire cores of power cable, and 3 ~ 5 insulated wire cores form power cables, stand-by after the assay was approved;
2) select oxygen-free copper flexible conductor, wrapped one deck flame retardant coating extrudes a layer insulating simultaneously, makes the insulated wire cores of control cables; 2～7 stranded while lapped shielding layers of insulated wire cores, then select and extrude one deck restrictive coating formation control cable, stand-by after the assay was approved;
3) select oxygen-free copper flexible conductor, extrude a layer insulating, form core in insulation; Require to determine core logarithm in insulation according to downhole gauges, carry out the stranded wrapped shielding of pair twist, form insulation shielding core, finally one or more insulation shielding core is carried out to the stranded and lapped shielding layer of stranding, extrude again one deck restrictive coating and make data-signal cable, stand-by after the assay was approved;
4) choose dimension, model fiber optic cables by cable requirement, stand-by after the assay was approved.
Beneficial effect of the present invention is:
1, by all cable set one under mine, integral protection, volume is little.
2, adopt stainless steel central passage pipe, can carry out daily underground air monitoring, also can prevent the cable high temperature that surprisingly overloads, be also that passage is rescued to protecting of people while surprisingly caving in down-hole simultaneously, can carry liquids and gases, extends disaster affected people life, wins the rescue time.
3, the isolated cable of stainless steel sheath contacts with subsurface environment, effectively explosion-proof, possesses wear-resisting, tension, oil resistant, the acidproof advantage such as corrosion-resistant.
Brief description of the drawings
Fig. 1 is the use state reference map of the embodiment of the present invention;
Fig. 2 is the profile of the embodiment of the present invention;
Fig. 3 is the structural representation of insulated wire cores;
Fig. 4 is the structural representation of control cables;
Fig. 5 is the structural representation of data-signal cable;
Fig. 6 is the flow chart of embodiment of the present invention processing method.
In figure:
1, stainless steel central passage pipe; 2, the first flame retardant coating; 3, insulating barrier; 4, control cables; 5, data-signal cable; 6, fiber optic cables; 7, power cable; 8, the second flame retardant coating; 9, the filler that blocks water; 10, stainless steel sheath; 11, oxygen-free copper flexible conductor; 12, flame retardant coating; 13, insulating barrier; 14, temperature sensor; 15, device for detecting temperature; 401, insulated wire cores; 402, screen; 403, restrictive coating; 501, insulation shielding core; 502, screen; 503, restrictive coating; 501a, oxygen-free copper flexible conductor; 501b, insulating barrier; 501c, screen.
Embodiment
With reference to the accompanying drawings the present invention is described in further detail below.
As shown in Figure 2, mining multifunctional intrinsic safety cable described in the embodiment of the present invention, comprise stainless steel central passage pipe 1, stainless steel central passage pipe 1 surface is surrounded with the first flame retardant coating 2, the first flame retardant coating 2 outsides are provided with insulating barrier 3, insulating barrier 3 outsides are provided with the stranded control cables of back twist 4, data-signal cable 5, fiber optic cables 6 and power cable 7, described power cable is made up of 3～5 insulated wire cores, power cable described in the present embodiment is 5, the control cables 4 that back twist is stranded, data-signal cable 5, fiber optic cables 6 and power cable 7 outsides are surrounded with the second flame retardant coating 8, the control cables 4 that the second flame retardant coating 8 is stranded with described back twist, data-signal cable 5, between fiber optic cables 6 and power cable 7, be filled with the filler 9 that blocks water, the second flame retardant coating 8 surfaces are provided with stainless steel sheath 10.
As shown in Figure 3, the insulated wire cores of described power cable 7 is followed successively by oxygen-free copper flexible conductor 11, flame retardant coating 12 and insulating barrier 13 from the inside to the outside.
As shown in Figure 4, described control cables 4 comprises 2～7 stranded insulated wire cores 401, in the present embodiment, insulated wire cores 401 is 7, and stranded insulated wire cores 401 outsides are provided with screen 402 and restrictive coating 403, and described insulated wire cores 401 is identical with the structure of the insulated wire cores in power cable 7.
As shown in Figure 5, described data-signal cable 5 comprises one or more insulation shielding core 501, in the present embodiment, be three, insulation shielding core 501 is outer to be provided with screen 502 and to be extruded with restrictive coating 503, described insulation shielding core 501 is stranded by core pair twist in a pair of insulation, insulation interior lines core inner is oxygen-free copper flexible conductor 501a, and oxygen-free copper flexible conductor 501a surface is extruded with insulating barrier 501b, and the stranded interior core of the insulation outside of described pair twist is provided with screen 501c.
As shown in Figure 6, a kind of mining multifunctional intrinsic safety cable processing method, comprises the following steps.
1) stainless steel band longitudinal seam welding is drawn into stainless steel central passage pipe.
2) at wrapped the first flame retardant coating of stainless steel central passage tube outer surface, extrude a layer insulating and whether inspection is qualified simultaneously, enter next process after qualified.
3) select oxygen-free copper flexible conductor, wrapped one deck flame retardant coating also extrudes a layer insulating and makes insulated wire cores, and 3～5 insulated wire cores form power cables, stand-by after the assay was approved.Select oxygen-free copper flexible conductor, wrapped one deck flame retardant coating extrudes a layer insulating simultaneously, forms insulated wire cores, 2～7 stranded while screens of insulated wire cores, then select and extrude one deck restrictive coating formation control cable, stand-by after the assay was approved; Select oxygen-free copper flexible conductor, extrude a layer insulating, form core in insulation; Require to determine core logarithm in insulation according to downhole gauges, carry out the stranded wrapped shielding of pair twist, form insulation shielding core, finally one or more insulation shielding core is carried out to the stranded and lapped shielding layer of stranding, extrude again one deck restrictive coating and make data-signal cable, stand-by after the assay was approved; Finally centered by stainless steel central passage pipe, by above-mentioned four kinds of cables around stainless steel central passage pipe back twist twisted synthesizing cable.
4) select the filler that blocks water to fill the gap between control cables, data-signal cable, fiber optic cables and power cable, make cable rounding, tight.
5) wrapped the second flame retardant coating outside the stranded control cables of back twist, data-signal cable, fiber optic cables and power cable, then carries out insulation resistance detection and voltage test, detects qualified rear stand-by.
6) press width and the thickness of the selected stainless steel band of laying up diameter, vertical bag the 5th) step detects longitudinal joint argon arc welding, the drawing one-shot forming simultaneously of qualified cable and forms stainless steel sheath and stainless steel sheath is carried out to flaw detection.
7) carry out conductor resistance, insulation resistance, alternating voltage and structural testing, judge that stranding dispatches from the factory after qualified.
In the above-mentioned course of processing, can select " trade mark 308 " stainless steel band for the manufacture of the material of stainless steel central passage pipe 1 and stainless steel sheath 10.It is cross-linking polyethylene materials and the pvc material of 90 DEG C that insulating barrier and restrictive coating are chosen respectively long-term work temperature.
When concrete use, this mining multifunctional intrinsic safety cable is the multiple cable shape all-in-one-piece cable of combination, and volume is little.Outer jacket is the stainless steel sheath 10 of sealing, completely cut off cable and contact with subsurface environment, the while also maintenance improved cable useful life.Stainless steel sheath 10 can also be realized non-maintaining, can increase cable surface temperature sensor 14 and be connected to device for detecting temperature 15, reports to the police, as shown in Figure 1 in the time that temperature has exceeded the long-term serviceability temperature of cable.Stainless steel central passage pipe 1 after reporting to the police in cable can pass through gas, liquid is lowered the temperature, and has protected insulating barrier, and has extended its ageing time, and then greatly improved cable useful life.Because this cable outer surface does not have combustible, though down-hole burning cable can smell yet and smog produce, reduced because of toxic gas injures and deaths probability., because having completely cut off cable, stainless steel sheath 10 contacts with subsurface environment, so can be because of cable static, puncture and cause down-hole to occur accidental explosion accident meanwhile.
This cable also can carry out daily fire damp measuring density by stainless steel central passage pipe 1.Exceed standard after warning, startup is sent, exhaust blower, to ensure underground operators safety.And once accident appears in down-hole, the stainless steel central passage pipe 1 of " mining multifunctional intrinsic safety cable " also can be trapped personnel and carries gas and liquid, extends trapped personnel life, wins rescue time.
Although above-mentioned embodiment is further described technical scheme of the present invention by reference to the accompanying drawings; but be not construed as limiting the scope of the present invention; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendments that creative work can make or distortion still in protection scope of the present invention.
Claims (8)
1. a mining multifunctional intrinsic safety cable, it is characterized in that: comprise stainless steel central passage pipe, stainless steel central passage tube-surface is surrounded with the first flame retardant coating, the first flame retardant coating outside is provided with insulating barrier, insulating barrier outside is provided with the stranded control cables of back twist, data-signal cable, fiber optic cables and power cable, the control cables that back twist is stranded, data-signal cable, fiber optic cables and multiple power cable outside are surrounded with the second flame retardant coating, the control cables that the second flame retardant coating and described back twist are stranded, data-signal cable, between fiber optic cables and power cable, be filled with the filler that blocks water, the second flame retardant coating surface is provided with stainless steel sheath.
2. mining multifunctional intrinsic safety cable according to claim 1, is characterized in that: described power cable comprises many insulated wire cores.
3. mining multifunctional intrinsic safety cable according to claim 1, is characterized in that: described control cables comprises 2～7 stranded insulated wire cores, and insulated wire cores outside is provided with screen and restrictive coating.
4. according to the mining multifunctional intrinsic safety cable described in claim 1 or 3, it is characterized in that: described insulated wire cores is followed successively by oxygen-free copper flexible conductor, flame retardant coating and insulating barrier from the inside to the outside.
5. mining multifunctional intrinsic safety cable according to claim 1, it is characterized in that: described data-signal cable comprises the insulation shielding core that one or more is stranded, described one or more stranded insulation shielding core outside is provided with screen and is extruded with restrictive coating, described insulation shielding core is stranded by core pair twist in a pair of insulation, insulation interior lines core inner is oxygen-free copper flexible conductor, oxygen-free copper flexible conductor surface is extruded with insulating barrier, and the stranded interior core of the insulation outside of described pair twist is provided with screen.
6. mining multifunctional intrinsic safety cable according to claim 2, is characterized in that: the insulated wire cores of described power cable is 3 ~ 5.
7. a mining multifunctional intrinsic safety cable processing method, is characterized in that, comprises the following steps:
1) stainless steel band longitudinal seam welding is drawn into stainless steel central passage pipe;
2) at wrapped the first flame retardant coating of stainless steel central passage tube outer surface, extrude a layer insulating simultaneously;
3) according to the actual requirement of cable, manufacture control cables, data-signal cable and the power cable of dimension, model, select corresponding fiber optic cables, centered by stainless steel central passage pipe, by four kinds of cables around stainless steel central passage pipe back twist twisted synthesizing cable;
4) select the filler that blocks water to fill the gap between control cables, data-signal cable, fiber optic cables and power cable, make cable rounding, tight;
5) wrapped the second flame retardant coating outside control cables, data-signal cable, fiber optic cables and power cable, then carries out insulation resistance detection and voltage test, enters next step after qualified;
6) press width and the thickness of the selected stainless steel band of laying up diameter, longitudinal joint argon arc welding, the drawing one-shot forming simultaneously of vertical bag cable forms stainless steel sheath and also stainless steel sheath carried out to flaw detection;
7) carry out conductor resistance, insulation resistance, alternating voltage and structural testing, judge that stranding dispatches from the factory after qualified.
8. the intrinsic safety cable processing method of using according to claim 5, is characterized in that, step 3) is further comprising the steps:
1) select oxygen-free copper flexible conductor, wrapped one deck flame retardant coating also extrudes a layer insulating and forms the insulated wire cores of power cable, and 3～5 insulated wire cores form power cables, stand-by after the assay was approved;
2) select oxygen-free copper flexible conductor, wrapped one deck flame retardant coating extrudes a layer insulating simultaneously, makes the insulated wire cores of control cables; 2～7 stranded while screens of insulated wire cores, then select and extrude one deck restrictive coating formation control cable, stand-by after the assay was approved;
3) select oxygen-free copper flexible conductor, extrude a layer insulating, form core in insulation; Require to determine core logarithm in insulation according to downhole gauges, carry out the stranded wrapped shielding of pair twist, form insulation shielding core, finally one or more insulation shielding core is carried out to the stranded and lapped shielding layer of stranding, extrude again one deck restrictive coating and make data-signal cable, stand-by after the assay was approved;
4) choose dimension, model fiber optic cables by cable requirement, stand-by after the assay was approved.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410196433.9A CN103943267A (en) | 2014-05-12 | 2014-05-12 | Multifunctional mining intrinsic safety cable and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410196433.9A CN103943267A (en) | 2014-05-12 | 2014-05-12 | Multifunctional mining intrinsic safety cable and processing method thereof |
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| CN103943267A true CN103943267A (en) | 2014-07-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469888A (en) * | 2015-12-31 | 2016-04-06 | 江苏中煤电缆有限公司 | Coaxial degaussing cable with dual-conductor structure |
| CN107464609A (en) * | 2017-09-21 | 2017-12-12 | 贵州固达电缆有限公司 | A kind of compound mine cable of High-strength compression resistant |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6472614B1 (en) * | 2000-01-07 | 2002-10-29 | Coflexip | Dynamic umbilicals with internal steel rods |
| CN200976295Y (en) * | 2006-10-24 | 2007-11-14 | 盛金昌 | Low-capacitance anti-jamming safety explosion prevention signal cable for coal well |
| CN202816432U (en) * | 2012-09-28 | 2013-03-20 | 上海永进电缆(集团)有限公司 | Intrinsic safe type cable with metal sheath |
| CN203311871U (en) * | 2013-05-23 | 2013-11-27 | 远东电缆有限公司 | Umbilical cable for ocean engineering |
| CN203826114U (en) * | 2014-05-12 | 2014-09-10 | 沈兴线缆集团有限公司 | Multifunctional intrinsic safety cable for mining |
-
2014
- 2014-05-12 CN CN201410196433.9A patent/CN103943267A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6472614B1 (en) * | 2000-01-07 | 2002-10-29 | Coflexip | Dynamic umbilicals with internal steel rods |
| CN200976295Y (en) * | 2006-10-24 | 2007-11-14 | 盛金昌 | Low-capacitance anti-jamming safety explosion prevention signal cable for coal well |
| CN202816432U (en) * | 2012-09-28 | 2013-03-20 | 上海永进电缆(集团)有限公司 | Intrinsic safe type cable with metal sheath |
| CN203311871U (en) * | 2013-05-23 | 2013-11-27 | 远东电缆有限公司 | Umbilical cable for ocean engineering |
| CN203826114U (en) * | 2014-05-12 | 2014-09-10 | 沈兴线缆集团有限公司 | Multifunctional intrinsic safety cable for mining |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469888A (en) * | 2015-12-31 | 2016-04-06 | 江苏中煤电缆有限公司 | Coaxial degaussing cable with dual-conductor structure |
| CN107464609A (en) * | 2017-09-21 | 2017-12-12 | 贵州固达电缆有限公司 | A kind of compound mine cable of High-strength compression resistant |
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Application publication date: 20140723 |