CN201758029U - Shield cable - Google Patents

Shield cable Download PDF

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Publication number
CN201758029U
CN201758029U CN2010202382722U CN201020238272U CN201758029U CN 201758029 U CN201758029 U CN 201758029U CN 2010202382722 U CN2010202382722 U CN 2010202382722U CN 201020238272 U CN201020238272 U CN 201020238272U CN 201758029 U CN201758029 U CN 201758029U
Authority
CN
China
Prior art keywords
core
ground
cable
radius
master
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 - Fee Related
Application number
CN2010202382722U
Other languages
Chinese (zh)
Inventor
董国超
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.)
JIANGSU HUAYA CABLE CO Ltd
Original Assignee
JIANGSU HUAYA CABLE CO Ltd
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 JIANGSU HUAYA CABLE CO Ltd filed Critical JIANGSU HUAYA CABLE CO Ltd
Priority to CN2010202382722U priority Critical patent/CN201758029U/en
Application granted granted Critical
Publication of CN201758029U publication Critical patent/CN201758029U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a shield cable, which adopts the structure that main wire cores and ground wire cores are in radial arrangement coaxially by taking an axis of the cable as a center; a rubber sheath is extruded on the outermost layer; filling strips with saddle-backed cross sections are arranged along the center of the axis of the cable; the filling strips are provided with ridges with the same amount of the main wire cores and ground wire cores; the radius of the outer arc side of each ridge is the radius of the semiconductive insulation layer of each ground wire core; and the radius of the outer arc side of the adjacent ridges is the radius of the insulation shielding layer of each main wire core. The filling strips have the effect that the radius of the arc side is equal to those of the main wire cores and the ground wire cores, and during core stranding, the wire cores can be better fixed, so that the wire cores can not mutually slide. Moreover, the middle of the stranded cable cores is completely filled with rubber, so that the structure is compact and the shield cable is safe and stable. Signal cores are arranged in the filling strips, and have the effect that the working surface of a shield machine is connected with the ground control, so that the convenient connection to the ground is realized if the special case is generated on the working surface of the shield machine.

Description

A kind of shield cable
Technical field
The utility model belongs to the power cable field, is specifically related to a kind of shield cable that 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.
Though the shield cable of existing domestic production exists 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 utility model provides a kind of section tight, can not produce the shield cable of bulge phenomenon, its function admirable, and safe in utilization stable, flexibility is good, and is easy for installation, has signal transfer function simultaneously, reduces the number of cables of the scope of operation, improves fail safe.
For achieving the above object, shield cable described in the utility model comprises 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, packing is provided with along the cable axis center, packing has quantity and master core and the identical ridge of ground core quantity, 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.
Further improvement of the utility model is: be provided with signal core in packing, the signal core conductor is zinc-plated soft copper conductor, and external insulation is fluoroplastics, and it has the intensity height, the characteristics that insulation property are good.
Further improvement of the utility model is: make master core and ground core quantity respectively be 3, corresponding packing also has 3 vallates.
Further improvement of the utility model is: extrude Polyamide Yarns braiding reinforced layer and polybutadiene rubber sheath outside rubber sheath successively.
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.
The utility model 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 structural representation of an embodiment of the utility model,
Fig. 2 is the structural representation of another embodiment of the utility model,
Fig. 3 is the packing sectional view with ridge of 3,
Fig. 4 is the packing sectional view with ridge of 4.
Embodiment
As shown in Figure 1, the utility model 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 3, 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. 2 is another embodiment of the present utility model, and it is the remodeling on product basis shown in Figure 1, is with rubber sheath 7 outer Polyamide Yarns braiding reinforced layer 10 and the polybutadiene rubber sheaths 11 of extruding successively.
Fig. 4 is the packing schematic diagram with 4 vallates, and its corresponding master core and ground core respectively are 4.

Claims (4)

1. 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: 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.
3. shield cable according to claim 1 is characterized in that: master core and ground core quantity respectively are 3, and corresponding packing (8) has 3 vallates.
4. 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).
CN2010202382722U 2010-06-24 2010-06-24 Shield cable Expired - Fee Related CN201758029U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202382722U CN201758029U (en) 2010-06-24 2010-06-24 Shield cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202382722U CN201758029U (en) 2010-06-24 2010-06-24 Shield cable

Publications (1)

Publication Number Publication Date
CN201758029U true CN201758029U (en) 2011-03-09

Family

ID=43645317

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202382722U Expired - Fee Related CN201758029U (en) 2010-06-24 2010-06-24 Shield cable

Country Status (1)

Country Link
CN (1) CN201758029U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103928087A (en) * 2014-03-26 2014-07-16 安徽长风电缆集团有限公司 Fire-resistant insulated industrial control cable
CN107301897A (en) * 2016-04-14 2017-10-27 陈海燕 High pressure curl cable and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103928087A (en) * 2014-03-26 2014-07-16 安徽长风电缆集团有限公司 Fire-resistant insulated industrial control cable
CN107301897A (en) * 2016-04-14 2017-10-27 陈海燕 High pressure curl cable and preparation method thereof
CN107301897B (en) * 2016-04-14 2020-08-28 陈海燕 High-voltage reel cable and preparation method thereof

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110309

Termination date: 20150624

EXPY Termination of patent right or utility model