CN207624399U - A kind of high-performance compensation cable of use environment harshness - Google Patents
A kind of high-performance compensation cable of use environment harshness Download PDFInfo
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- CN207624399U CN207624399U CN201720701374.5U CN201720701374U CN207624399U CN 207624399 U CN207624399 U CN 207624399U CN 201720701374 U CN201720701374 U CN 201720701374U CN 207624399 U CN207624399 U CN 207624399U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
A kind of high-performance compensation cable of use environment harshness, structure are：The outer from-inner-to-outer of cable core is equipped with wrapping layer, proof copper-wire braided shielded layer and sheath successively；The cable core is constituted by more low-smoke non-halogen flame-retardant gasket for packings and Duo Gen core wires are twisted, pair twist pitch≤100mm；Every core wire is made of the conductor strand of two outsourcing insulations；Conductor is constituted by thermocouple alloy wire is twisted；The direction of lay of conductor is opposite with the direction of lay of core wire；0.6~1.0mm of thickness range of insulating layer；The wrapping layer is constituted by the overlapping of low-smoke non-halogen flame-retardant twining package tape is wrapped, nominal thickness ranging from 0.1~0.3mm of wrapping layer, wrapped cap rate >=23%；The sheath of low-smoke halogen-free flame-retardant thermoplastic protective cover material composition is extruded outside proof copper-wire braided shielded layer；Thickness >=1.2mm of sheath；The proof copper-wire braided shielded layer is tinned copper wire woven shield, and count >=80% of tinned copper wire woven shield, tinned copper wire filament diameter is 0.15~0.30mm.
Description
Technical field
The utility model is related to a kind of compensating cable, more particularly to a kind of high-performance meeting the harsh environments such as nuclear power station is mended
Repay cable.The utility model is suitable for the connection of thermocouple and recorder, computer and data processing system.The utility model
Belong to cable application technical field.
Background technology
In the prior art, use has been put into international state-of-the-art nuclear power technology of new generation.It is predicted, coming 10 years state
Inside in advance in respect of the market space of 20 to 30 new-built units, while will also there are 10 to 20 units to lengthen the life, it is external in advance in respect of 60 to
The market space of 70 new-built units, while will also have 30 to 40 units retired, 20 to 30 units are lengthened the life, and nuclear power projects are opened
It is huge to send out space.Compensating cable is measuring for electric thermo-couple temperature, divides K indexing, T indexing equal-specifications.Due to nuclear power station etc.
It is required that more under harsh environment, the Shortcomings such as service life of cable it requires (mainly anti-in non-conductive functional structure
Protection structure) design on further strengthen.But this brings new problem, such as the architectural characteristic of cable to change, it is difficult to
Meeting mechanical property requirements, the difficulty of processing of cable improves, the outer diameter of cable increases, weight increases, production cost is higher etc.
A series of problems.
Utility model content
The utility model in order to solve problems present in existing compensating cable, propose a kind of outer diameter it is small, it is light-weight,
At low cost, the processing technology easy long-life the compensating cable suitable for harsh environments such as nuclear power stations.
The utility model uses following technical scheme：
A kind of high-performance compensation cable of use environment harshness, structure are：The outer from-inner-to-outer of cable core is equipped with wrapped successively
Layer, proof copper-wire braided shielded layer and sheath；
The cable core is constituted by more low-smoke non-halogen flame-retardant gasket for packings and Duo Gen core wires are twisted, pair twist pitch≤100mm；
Every core wire is made of the conductor strand of two outsourcing insulations；Conductor is constituted by thermocouple alloy wire is twisted；The strand of conductor
It is opposite with the direction of lay of core wire to close direction；Insulating layer is the radiation resistance cross-linked polyolefin insulating layer of low-smoke non-halogen flame-retardant, insulation
0.6~1.0mm of thickness range of layer；Gasket for packing is identical as the temperature resistant grade of insulating layer；
The wrapping layer is constituted by the overlapping of low-smoke non-halogen flame-retardant twining package tape is wrapped, the nominal thickness ranging from 0.1 of wrapping layer
~0.3mm, wrapped cap rate >=23%；
The sheath of low-smoke halogen-free flame-retardant thermoplastic protective cover material composition is extruded outside proof copper-wire braided shielded layer；The thickness of sheath >=
1.2mm；The proof copper-wire braided shielded layer is tinned copper wire woven shield, the count of tinned copper wire woven shield >=
80%, the requirement of tinned copper wire filament diameter：0.15~0.30mm.
Here, the minimum thickness of sheath is 1.2mm, is determined by the performance requirement of cable.And the maximum gauge of sheath, it is
Related to the outer diameter of cable requirement etc., under the premise of meeting the conditions such as outer diameter requirement, jacket thickness is more than 1.2mm.In work
In journey practice, under the premise of meeting each function, performance requirement, the thickness of sheath is the smaller the better, other than reducing the outside diameter of cable, also
Save raw material.
Further, the gasket for packing is PP ropes or dustless mineral wool rope.Gasket for packing should be identical as insulating materials temperature resistant grade, fills out
It fills appearance and wants rounding, removing filling will not cause to damage to its internal structure.
Preferably, the proof copper-wire braided shielded layer is tinned copper wire woven shield；The volume of tinned copper wire woven shield
It is 82% to knit density, the requirement of tinned copper wire filament diameter：0.18mm.
Preferably, the thickness of the insulating layer is 0.6mm；The thickness of the low-smoke non-halogen flame-retardant twining package tape is 0.2mm；Around
Packet cap rate is 25%.
Further, the acid gas content of gasket for packing is not more than 2%, and smoke index is not more than 45, and poison exponent is not more than 5；
The Insulation Material for constituting insulating layer is FPW160-1 types cross-linked polyolefin either FPW160-2 type cross-linked polyolefins；Absolutely
The acid gas content of edge material should be not more than 18%, and smoke index is not more than 45, and poison exponent is not more than 1.5；
Low-smoke halogen-free flame-retardant thermoplastic protective cover material is HW160-6 type polyolefine materials；The acid gas content of sheath material should not
More than 2%, smoke index is not more than 25, and poison exponent is not more than 5；
The material of the thermocouple alloy wire is：KCB (copper, corronil) or KX (nichrome, nickel silicon alloy).It is twisted
The conductor that thermocouple alloy wire afterwards is constituted is as thermocouple compensating wire.
The principle and effect of the solution technical problem of the technical program are described as follows：
Due to this cable use environment be in nuclear power station, so, insulating layer, restrictive coating will have radiation resistance requirement.It passes
System rubber insulation is difficult to meet the life requirements in 60 years under nuclear power plant environment.Using radiation resistance insulating layer and restrictive coating, make this electricity
Cable solves the problems, such as to use under the harsh environments such as nuclear power station.Due to the self property feature of Insulation Material and protective cover material, in order to reach
To the mechanical property requirements of cable, this requires each technology essential factor of cable is compatible, adverse effect is preferably minimized.
Core wire is first first twisted by the conductor with insulating layer, then is twisted with filling and is constituted cable core.Since this cable is
Compensating cable, function are to extend the cold end of multiple spot thermode and mobile thermocouple, couple with display instrument and constitute multi-point temperature measurement
System.Its carrying current requirements is smaller, and the sectional area of conductor is smaller, meanwhile, the material of conductor requires to be thermocouple alloy wire, mesh
Under preceding technical conditions, specially copper, corronil, nichrome or nickel silicon alloy.It is determined, is led by the property of these materials itself
The mechanical performances such as the tension of body are not strong.For this purpose, being first twisted to conductor in core wire, then cable core is constituted with filling twice stranding,
Increase the mechanical strengths such as tension.In the not further modified form of other conditions, using the strand in conductor strand direction and core wire
Direction is closed on the contrary, further increasing the overall mechanical strength of cable, while using specific cable core pair twist pitch.
Using tinned copper wire woven shield structure.Due to this cable be transmission weak electric signal, electromagnetism interference require compared with
Height, so, pure pure tinned copper wire woven shield is used, to which shielding effect can be realized without high count
Fruit.In addition, also improving the capability of resistance to radiation of cable.Tinned copper wire woven shield also has the mechanical performances such as cable tension
Supplement raising effect.
This programme is by specific conductor strand, core wire is twisted and cable core stranded mode, can solve the steady of signal transmission
Qualitative question (transmission high level conductor and transmission low level conductor strand), electromagnetism interference characteristic are (special by twisted transmission itself
Point determines) problem and reduce cable radius problem (tensile strength can be improved by twisted, and be increased without conductor diameter)；Together
When cable core is twisted also further solves problems of mechanical strength.In turn, the weight that also solves existing relevant cables is big, processability
Can be poor, of high cost the problems such as.
This construction of cable is suitable for production, without existing production equipment is substantially transformed.
After adopting the above technical scheme, the utility model has the advantages that：
(1) Cable Construction Design advantages of simple：The conductor strand of two tape insulation layers is at core wire, more core wire twisted synthesizing cables
Core is twisted, is easy to process, and twisted cable core is secured.Tinned copper wire woven shield improves the shielding of entire cable, resists
Radianting capacity becomes strong.
(2) stranded thermocouple metal conductor, signal transmission are more stablized.
(3) the radiation resistance cross-linked polyolefin insulating layer and low smoke and zero halogen of low-smoke non-halogen flame-retardant gasket for packing, low-smoke non-halogen flame-retardant
Flame-proofed thermoplastic sheath makes cable low-smoke non-halogen flame-retardant performance more preferable.
(4) tinned copper wire woven shield, anti-oxidant, longer life expectancy is less damaged, prevents insulation and the aging of sheath
Ability is strong, and capability of resistance to radiation becomes strong.
(5) low-smoke halogen-free flame-retardant thermoplastic sheath makes the resistance to nuclear radiation of cable, resistance to long term heat ageing, improves cable and uses the longevity
Life.
(6) radiation resistance cross-linked polyolefin insulating layer, the low-smoke halogen-free flame-retardant thermoplastic sheath of low-smoke non-halogen flame-retardant make cable
Structure is more soft, more flexible, and outer diameter smaller, weight is lighter, is more convenient and is used suitable for nuclear power station narrow regions.
(7) radiation resistance cross-linked polyolefin insulating layer, the low-smoke halogen-free flame-retardant thermoplastic sheath of low-smoke non-halogen flame-retardant make cable
Cost is cheaper, and processing is easier.
(8) after testing, the conductor of this cable service life under 90 DEG C of hot conditions is not less than 60 years.
In view of the deficiencies in the prior art, the utility model provides a kind of compensating cable, which can expire
Sufficient nuclear power station shell external environment；Has 60 years service life；Performance is stablized under high temperature or low temperature environment, heat-proof aging and high dose
Radiation aging function admirable；Structurally flexible, mounting and installation are convenient；Simple in structure, outer diameter is small, light weight and cost is low, processing performance
It is easy, easy to produce.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
In figure：1, conductor, 2, insulating layer, 3, core wire, 4, filling, 5, cable core, 6, wrapping layer, 7, proof copper-wire braided shielded layer,
8, sheath.
Specific implementation mode
This programme is illustrated with specific implementation mode below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of high-performance compensation cable of use environment harshness, structure are：The outer from-inner-to-outer of cable core according to
It is secondary to be equipped with wrapping layer, proof copper-wire braided shielded layer and sheath；
The cable core is twisted and is constituted by more low-smoke non-halogen flame-retardant gasket for packings and 3 core wires, pair twist pitch≤100mm；Often
Root core wire is made of the conductor strand of two outsourcing insulations；Conductor is constituted by thermocouple alloy wire is twisted, conductor structure symbol
Close the regulation of GB/T 4909；The direction of lay of conductor is opposite with the direction of lay of core wire；Insulating layer is the resistance to of low-smoke non-halogen flame-retardant
Irradiation crosslinked polyolefin insulating layer, 0.6~1.0mm of thickness range of insulating layer；The temperature resistant grade phase of gasket for packing and insulating layer
Together；The wrapping layer is constituted by the overlapping of low-smoke non-halogen flame-retardant twining package tape is wrapped, and the nominal thickness ranging from 0.1 of wrapping layer~
0.3mm, wrapped cap rate >=23%；The shield of low-smoke halogen-free flame-retardant thermoplastic protective cover material composition is extruded outside proof copper-wire braided shielded layer
Set；Thickness >=1.2mm of sheath；The proof copper-wire braided shielded layer is tinned copper wire woven shield, tinned copper wire braid shielded
Count >=80% of layer, the requirement of tinned copper wire filament diameter：0.15~0.30mm.
In this example：
The gasket for packing is PP ropes or dustless mineral wool rope.The proof copper-wire braided shielded layer is tinned copper wire woven shield；
The count of tinned copper wire woven shield is 82%, the requirement of tinned copper wire filament diameter：0.18mm.The thickness of the insulating layer
Degree is 0.6mm；The thickness of band is 0.2mm；Wrapped cap rate is 25%.The acid gas content of gasket for packing is not more than 2%, smoke index
No more than 45, poison exponent is not more than 5；Constitute insulating layer Insulation Material be FPW160-1 types cross-linked polyolefin either
FPW160-2 type cross-linked polyolefins；The acid gas content of insulating materials should be not more than 18%, and smoke index is not more than 45, and poison exponent is not
More than 1.5；Low-smoke halogen-free flame-retardant thermoplastic protective cover material is HW160-6 type polyolefine materials；The acid gas content of sheath material should not
More than 2%, smoke index is not more than 25, and poison exponent is not more than 5；The material of thermocouple alloy wire is：KCB (copper, corronil)
Or KX (nichrome, nickel silicon alloy).
The preferably stranded thermocouple metal conductor of the conductor of this example, improves the electric conductivity of conductor, keep conductor soft and
It is hardly damaged.Insulating layer be low cigarette, Halogen, fire-retardant radiation resistance cross-linked polyolefin insulating layer, in production be suitable for using high temperature,
High pressure continuous multilayer mode extrudes.The preferred tinned copper wire woven shield of shielded layer, anti-oxidant, longer life expectancy are less susceptible to
Damage prevents the aging ability of insulation and sheath strong, and capability of resistance to radiation becomes strong.The preferred low-smoke non-halogen flame-retardant gasket for packing of filled layer carries
High cable low-smoke non-halogen flame-retardant performance.Restrictive coating is low cigarette, Halogen, fire-retardant radiation resistance polyolefine material, and Radiation hardness becomes
By force.Core wire and cable core are all made of pair twist structure, easy to process, and twisted cable core is secured.
After adopting the above scheme, this cable can meet the requirement under the harsh environments such as nuclear power station of new generation, simultaneously
Service life reaches 60 years or more, and it is simple in structure, Flouride-resistani acid phesphatase is good, processing performance is good, production technology is easy.
Claims (2)
1. a kind of high-performance compensation cable of use environment harshness, it is characterized in that structure is：The outer from-inner-to-outer of cable core is equipped with successively
Wrapping layer, proof copper-wire braided shielded layer and sheath；
The cable core is constituted by more low-smoke non-halogen flame-retardant gasket for packings and Duo Gen core wires are twisted, pair twist pitch≤100mm；Every core
Line is made of the conductor strand of two outsourcing insulations；Conductor is constituted by thermocouple alloy wire is twisted；The direction of lay of conductor
It is opposite with the direction of lay of core wire；Insulating layer is the radiation resistance cross-linked polyolefin insulating layer of low-smoke non-halogen flame-retardant, the thickness of insulating layer
Degree is 0.6mm；Gasket for packing is identical as the temperature resistant grade of insulating layer；
The wrapping layer is constituted by the overlapping of low-smoke non-halogen flame-retardant twining package tape is wrapped, and the nominal thickness ranging from 0.1 of wrapping layer~
0.3mm；
The sheath of low-smoke halogen-free flame-retardant thermoplastic protective cover material composition is extruded outside proof copper-wire braided shielded layer；Thickness >=1.2mm of sheath；
The proof copper-wire braided shielded layer is tinned copper wire woven shield, and the count of tinned copper wire woven shield is 82%, plating
The requirement of tin copper wire filament diameter：0.18mm；
The gasket for packing is PP ropes or dustless mineral wool rope；The acid gas content of gasket for packing is not more than 2%, and smoke index is not more than 45, poison
Sex index is not more than 5；
The Insulation Material for constituting insulating layer is FPW160-1 types cross-linked polyolefin either FPW160-2 type cross-linked polyolefins；Insulation Material
Acid gas content be not more than 18%, smoke index be not more than 45, poison exponent be not more than 1.5；
Low-smoke halogen-free flame-retardant thermoplastic protective cover material is HW160-6 type polyolefine materials；The acid gas content of protective cover material should be not more than
2%, smoke index is not more than 25, and poison exponent is not more than 5；
The material of the thermocouple alloy wire is：Copper, corronil, nichrome or nickel silicon alloy.
2. compensating cable according to claim 1, it is characterized in that the thickness of the low-smoke non-halogen flame-retardant twining package tape is 0.2mm；
Wrapped cap rate is 25%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147997A (en) * | 2018-10-16 | 2019-01-04 | 睿康文远电缆股份有限公司 | High temperature high pressure deep well detects cable |
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2017
- 2017-06-16 CN CN201720701374.5U patent/CN207624399U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147997A (en) * | 2018-10-16 | 2019-01-04 | 睿康文远电缆股份有限公司 | High temperature high pressure deep well detects cable |
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