CN101339823A - Composite stabilizing shield cable - Google Patents
Composite stabilizing shield cable Download PDFInfo
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- CN101339823A CN101339823A CNA2008100216814A CN200810021681A CN101339823A CN 101339823 A CN101339823 A CN 101339823A CN A2008100216814 A CNA2008100216814 A CN A2008100216814A CN 200810021681 A CN200810021681 A CN 200810021681A CN 101339823 A CN101339823 A CN 101339823A
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Abstract
The invention discloses a composite stable shielding cable which is characterized in that master cable cores and ground cable cores with the same number take the cable axis as the center and are coaxially arranged at an interval; a rubber sheath is extruded on the outmost layer; a filling strip with a saddle-backed section is arranged along the cable axis center; the filling strip is provided with ridges with the same number as the master cores and the ground cores; the outer arc edge radius of each ridge is the radius of the semiconductive insulating layer of the ground cable cores; and the radius of the outer arc edge between the adjacent ridges is the radius of the insulating screen of the master cable cores. The filling strip has the function of well fixing all the cable cores and preventing the cable cores from mutual sliding in the stranding for cabling as the radius of the arc edge and the radius of the master cable cores and the ground cable cores are equal; and after stranding, the middle of the cable core is completely filled with the rubber, which causes the structure to be compact, safe and stable; the filling strip is provided with a signal core, which is used for connecting the working face of a shield machine and the ground control and facilitates the contact between the shield machine and the ground when special situations happen to the working face of the shield machine.
Description
Technical field
The invention belongs to the power cable field, be specifically related to a kind of composite stabilizing shield cable, it is specifically designed to the electric power transfer of shield machine.
Background technology
Along with sustainable development of economy, people grow with each passing day to the demand of traffic.Motor vehicles roll up minimizing with the equal path area of car, in the city, produced congested in traffic, road speed descends and problems such as environmental pollution.In the face of the increasingly serious fact, China progressively adjusts Urban Traffic Development Strategy, begins to build the modernized integrated transport system based on big capacity rail rapid transit systems such as subways.The benefit of its maximum is exactly not take the soil, ground, does not destroy ground landscape, does not produce surface noise, and route needn't be talked in a roundabout way, and can be fast a large amount of passenger transport are important development directions that modern city relieves traffic congestion.
The subterranean tunnel exploitation mainly is to utilize the peculiar shield shell of shield machine tool as supporting with shield structure technology, prevents caving in of stratum, to guarantee that portion carries out various operations such as hand excavation and lining cutting safely within it.
And the supporting electric power facility of shield machine, i.e. shield machine cable is distributed in the shield machine body as people's hair, because its specification requirement is higher, manufacturer is less at home, and the shield machine cable of China, particularly some high-end products need import for a long time.Along with the construction and the development of the exploitation of resources such as China's oil, natural gas and coal and tunneling technique, city municipal administration underground works, the shield machine cable will have huge development prospect in China.
The shield cable of existing domestic production, all be to copy external import shield cable to manufacture and design, structure such as Fig. 1: by conductor 21, master core conductor shield 22, master core insulating barrier 23, master core insulation screen 24, ground core semiconductive insulating barrier 25, rubber packed layer 26, stranding band 27, sheath 28 is formed.In this kind construction of cable, though exist rubber to fill at position, cable core space, but can not guarantee that cable is tight, specification requirements such as the obvious space of section, make between the insulation, sliding mutually between insulation and the sheath produces the cable bulge phenomenon, influences the safety in utilization of cable; Again since shield machine when underground job, enter that the degree of depth reaches hundreds of rice even more than the km, original cable exists because of the no signal core, when guaranteeing underground generation emergency situations with being connected of ground, must add the outer signal cable that connects again, cause that cable increases on the scope of operation, increased the accident occurrence frequency widely.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, a kind of section tight is provided, can not produce the composite stabilizing shield cable of bulge phenomenon, its function admirable, safe in utilization stable, flexibility is good, easy for installation, another object of the present invention is to make shield cable have signal transfer function, reduces the number of cables of the scope of operation, improves fail safe.
For achieving the above object, composite stabilizing shield cable of the present invention, comprise the master core conductor, the master core conductor shield, the master core insulating barrier, the master core insulation screen, the ground wire core conductor, ground core semiconductive insulating barrier and rubber sheath, described master core conductor extrudes the master core conductor shield outward successively, the master core insulating barrier, the master core insulation screen constitutes master core, the ground wire core conductor extrudes ground core semiconductive insulating barrier outward and constitutes the ground core, the master core of equal number and ground core are center and coaxial being spaced with the cable axis, rubber sheath is extruded in outermost layer, it comprises that also the cross section is the packing of saddle type in addition, this packing is provided with along the cable axis center, packing has quantity and master core and the identical ridge of ground core quantity, and general master core and ground core quantity respectively are 3, and corresponding packing also has 3 vallates.The outer arc limit radius of every ridge is a ground core semiconductive insulating barrier radius, the core insulation screen radius of serving as theme of the outer arc limit radius between adjacent ridge.
The effect of above-mentioned packing is: because its arc limit radius and master, the radius of core equate, when stranding is stranded, can each core is well fixing, it can not slided mutually.And filled up by rubber fully in the middle of the cable core of stranded back, make compact conformation, safety and stability.
Be provided with signal core in above-mentioned packing, the signal core conductor is zinc-plated soft copper conductor, and external insulation is fluoroplastics.Have the intensity height, insulation property are good.Single core can be, also multicore can be; Can add on signal core that metallic shield scratches with the dried of bound pair signal core outside resisting.Its effect is to make the shield machine scope of operation to be connected with ground control, is convenient to when producing special circumstances on the shield machine scope of operation and the getting in touch of ground.
The master core insulating barrier is adopted as ethylene propylene diene rubber and makes.It has excellent electric performance such as low insulation impedance low dielectric loss, anti-corona and ageing-resistant performance is good, good springiness, flexibility is good, moisture absorption is little physical and chemical performance, is widely used in electric wire.And have good resistance to bend(ing) energy, bending radius can narrow down to 3-5 doubly, and excellent spring more can give cable the frequent crooked characteristic that moves.
Rubber sleeve material is the polybutadiene rubber of low smoke and low halogen, intensity height, good springiness; and fill up cable core outer rim gap behind the stranding fully; closely be extruded in around the insulated wire cores; protect the internal structure of cable not to be subjected to the infringement of external environment condition better, improve the bending property and the usage safety performance of cable.
Because the difference of application can also extrude Polyamide Yarns braiding reinforced layer and polybutadiene rubber sheath successively outside rubber sheath.
The present invention is placed on former shield machine power cable and control cable in the cable, forms to have the composite cable that power and signal controlling are provided with amount, has saved material, has reduced the cable laying number of times, has improved the fail safe of electric use on the scope of operation.And stranded back because the effect of packing is filled up by rubber in the middle of the cable core fully, and the section tight can not produce bulge phenomenon, makes more compact structure, fail safe improves.
Description of drawings
Fig. 1 is the prior art constructions schematic diagram,
Fig. 2 is the structural representation of one embodiment of the invention,
Fig. 3 is the structural representation of another embodiment of the present invention,
Fig. 4 is the packing sectional view with ridge of 3,
Fig. 5 is the packing sectional view with ridge of 4.
Embodiment
As shown in Figure 2, the present invention mainly comprises master core conductor 1, master core conductor shield 2, master core insulating barrier 3, master core insulation screen 4, ground wire core conductor 5, core semiconductive insulating barrier 6, rubber sheath 7, packing 8, wherein the outer master core conductor shield 2, master core insulating barrier 3, master core insulation screen 4 of extruding successively of master core conductor 1 constitutes master cores, wherein master core insulating barrier 3 is made for ethylene propylene diene rubber.The ground wire core conductor 5 outer ground core semiconductive insulating barriers 6 that extrude constitute the ground core, 3 master cores and 3 ground cores are center and coaxial being spaced with the cable axis, the packing 8 that the cross section is saddle type is provided with along the cable axis center, packing 8 has the ridge of 3 width 3-5mm as shown in Figure 4, the outer arc limit radius of every ridge is ground core semiconductive insulating barrier 6 radiuses, outer arc limit radius between adjacent ridge core insulation screen 4 radiuses of serving as theme, three master cores and three ground cores all are the isosceles triangle arrangement during stranding, and tangent with the big or small circular arc of packing 8 respectively.The material of saddle type packing 8 is a semi-conductive rubber, is provided with signal core 9 in the packing 8, and signal core 9 conductors are zinc-plated soft copper conductor, and external insulation is fluoroplastics.Last rubber sheath 7 is extruded in outermost layer, and rubber sheath 7 is made for polybutadiene rubber.
Fig. 3 is an another embodiment of the present invention, and it is the remodeling on product basis shown in Figure 2, is with rubber sheath 7 outer Polyamide Yarns braiding reinforced layer 10 and the polybutadiene rubber sheaths 11 of extruding successively.
Fig. 5 is the packing schematic diagram with 4 vallates, and its corresponding master core and ground core respectively are 4.
Claims (8)
1, a kind of composite stabilizing shield cable, comprise master core conductor (1), master core conductor shield (2), master core insulating barrier (3), master core insulation screen (4), ground wire core conductor (5), ground core semiconductive insulating barrier (6) and rubber sheath (7), the outer master core conductor shield (2) that extrudes successively of described master core conductor (1), master core insulating barrier (3), master core insulation screen (4) constitutes master core, the outer ground core semiconductive insulating barrier (6) that extrudes of ground wire core conductor (5) constitutes the ground core, the master core of equal number and ground core are center and coaxial being spaced with the cable axis, rubber sheath (7) is extruded in outermost layer, it is characterized in that: further comprising the packing (8) that the cross section is saddle type, packing (8) is provided with along the cable axis center, packing (8) has quantity and master core and the identical ridge of ground core quantity, the outer arc limit radius of every ridge is ground core semiconductive insulating barrier (a 6) radius, core insulation screen (4) radius of serving as theme of the outer arc limit radius between adjacent ridge.
2, composite stabilizing shield cable according to claim 1 is characterized in that: packing (8) adopts semi-conductive rubber to make.
3, composite stabilizing shield cable according to claim 1 and 2 is characterized in that: be provided with signal core (9) in the packing (8), signal core (9) conductor is zinc-plated soft copper conductor, and external insulation is fluoroplastics.
4, composite stabilizing shield cable according to claim 3 is characterized in that: signal core (9) is single core or multicore.
5, composite stabilizing shield cable according to claim 1 and 2 is characterized in that: the insulating barrier that master core insulating barrier (3) is made for ethylene propylene diene rubber.
6, composite stabilizing shield cable according to claim 1 and 2 is characterized in that: the sheath that rubber sheath (7) is made for polybutadiene rubber.
7, composite stabilizing shield cable according to claim 1 and 2 is characterized in that: master core and ground core quantity respectively are 3, and corresponding packing (8) has 3 vallates.
8, composite stabilizing shield cable according to claim 1 and 2 is characterized in that: outer Polyamide Yarns braiding reinforced layer (10) and the polybutadiene rubber sheath (11) of extruding successively of rubber sheath (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100216814A CN101339823A (en) | 2008-08-12 | 2008-08-12 | Composite stabilizing shield cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100216814A CN101339823A (en) | 2008-08-12 | 2008-08-12 | Composite stabilizing shield cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101339823A true CN101339823A (en) | 2009-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100216814A Pending CN101339823A (en) | 2008-08-12 | 2008-08-12 | Composite stabilizing shield cable |
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| Country | Link |
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| CN (1) | CN101339823A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347106A (en) * | 2011-06-28 | 2012-02-08 | 江苏远洋东泽电缆股份有限公司 | Power cable for underwater shovel arm of dredger and manufacturing method thereof |
| CN102751018A (en) * | 2012-07-05 | 2012-10-24 | 江苏中天科技股份有限公司 | Neutral cable for deep-sea detection equipment |
| CN103928165A (en) * | 2013-09-29 | 2014-07-16 | 安徽华天电缆有限公司 | Aluminum alloy low voltage tensile frequency conversion cable |
| CN105118567A (en) * | 2015-08-28 | 2015-12-02 | 江苏中煤电缆有限公司 | Light-duty compound shore power cable |
| CN107146656A (en) * | 2017-06-22 | 2017-09-08 | 江苏华亚电缆有限公司 | Control cable |
| CN112768117A (en) * | 2020-12-30 | 2021-05-07 | 江西新吉电缆有限公司 | Silicon rubber insulation silicon rubber sheath frequency converter power cable |
-
2008
- 2008-08-12 CN CNA2008100216814A patent/CN101339823A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347106A (en) * | 2011-06-28 | 2012-02-08 | 江苏远洋东泽电缆股份有限公司 | Power cable for underwater shovel arm of dredger and manufacturing method thereof |
| CN102347106B (en) * | 2011-06-28 | 2012-10-10 | 江苏远洋东泽电缆股份有限公司 | Power cable for underwater shovel arm of dredger and manufacturing method thereof |
| CN102751018A (en) * | 2012-07-05 | 2012-10-24 | 江苏中天科技股份有限公司 | Neutral cable for deep-sea detection equipment |
| CN102751018B (en) * | 2012-07-05 | 2014-08-27 | 江苏中天科技股份有限公司 | Neutral cable for deep-sea detection equipment |
| CN103928165A (en) * | 2013-09-29 | 2014-07-16 | 安徽华天电缆有限公司 | Aluminum alloy low voltage tensile frequency conversion cable |
| CN105118567A (en) * | 2015-08-28 | 2015-12-02 | 江苏中煤电缆有限公司 | Light-duty compound shore power cable |
| CN107146656A (en) * | 2017-06-22 | 2017-09-08 | 江苏华亚电缆有限公司 | Control cable |
| CN112768117A (en) * | 2020-12-30 | 2021-05-07 | 江西新吉电缆有限公司 | Silicon rubber insulation silicon rubber sheath frequency converter power cable |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20090107 |