CN207302669U - A kind of circular crane circle control cable - Google Patents

A kind of circular crane circle control cable Download PDF

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Publication number
CN207302669U
CN207302669U CN201721157564.1U CN201721157564U CN207302669U CN 207302669 U CN207302669 U CN 207302669U CN 201721157564 U CN201721157564 U CN 201721157564U CN 207302669 U CN207302669 U CN 207302669U
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cable
layer
core
low
lapping layer
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CN201721157564.1U
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曾庆涛
凌国桢
梁福才
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Jiangsu Shangshang Cable Group Co Ltd
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Jiangsu Shangshang Cable Group Co Ltd
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Abstract

A kind of circular crane circle control cable, its structure are：The external diametrical extent of cable is 15.2~38.5mm；Core is formed by the 5th kind of warping strength tinned copper conductor outer wrapping insulating layer；More cores are twisted and form cable core jointly with filler material；The first lapping layer, shielded layer, the second lapping layer and oversheath are wrapped up successively outside cable core；The conductor is to be closed to obtain the 5th kind of warping strength tinned copper conductor by more tin-coated copper tow；The insulating layer is to be extruded to form by low-smoke non-halogen flame-retardant ethylene-propylene rubber cable insulating material；Cable core gap filling in first lapping layer has unvulcanised low-smoke non-halogen flame-retardant thermosetting property filler material；The structure of first lapping layer and the second lapping layer is identical；The shielded layer is metal wire knitted shielded layer；The oversheath is to be extruded to form by low-smoke non-halogen flame-retardant thermosetting property eraser sheath material.This cable has special structure, and the service life of cable was brought up to 60 years by 20 years, reduces the situation that core flattens, while improve the pliability of finished cable.

Description

A kind of circular crane circle control cable
Technical field
The technical program belongs to field of cable technology, is specifically a kind of circular crane circle control cable.
Background technology
In the prior art, the important technology index of cable for nuclear power station is cable life.The nuclear power station heap-type of China in the past Be two generations, two generations+, cable life be 40 years.At present, generation Ⅲ nuclear power proprietary technology, design and operation service life are 60 years.In core In power station, circular crane is also the lifting appliance being commonly used.The operating environment of circular crane requires it to control cable will be narrow The space of small closing carries out cable laying and installation and debugging.Meanwhile common ring hangs and is met 20 years with cable, design service life , it can not meet that three generations's nuclear power station hangs ring the technical requirement with cable.
The content of the invention
The invention proposes the circle control electricity of the circular crane with 60 year service life for meeting three generations's nuclear power station requirement Cable.
The technical problem run into this cable R＆D process, mainly has：In order to meet life requirements, then will to Insulation Material, The parametric scheme such as protective cover material and other selections of structural material for improving cable life, thickness is studied and improved.And by Make so in the physical property of Insulation Material and protective cover material, the mechanical performance such as the electrical property and buckling performance of cable, tensile property by Influence, if the other composition structures for not redesigning cable, cable can not be used as ring under three generations's nuclear power plant environment The control cable of shape crane uses.
In view of the above-mentioned problems, this cable is used as lower structure is solved：
A kind of circular crane circle control cable, its structure are：The integral diameter scope of cable is 15.2~38.5mm；
Core is formed by the 5th kind of warping strength tinned copper conductor outer wrapping insulating layer；More cores are twisted jointly with filler material Form cable core；The first lapping layer, shielded layer, the second lapping layer and oversheath are wrapped up successively outside cable core；
The conductor is to be closed to obtain the 5th kind of warping strength tinned copper conductor by more tin-coated copper tow；The diameter range of conductor It is 0.91~4.5mm.Preferably, number of conductors preferably 37, conductor specification (radial section product) preferred 1.5mm2。
The insulating layer is to be extruded to form by low-smoke non-halogen flame-retardant ethylene-propylene rubber cable insulating material, the thickness range of insulating layer It is 0.8~2.0mm；
Preferably, the preferred 1.0mm of the thickness of insulating layer, Insulation Material optionally have Shangshang Cable Group Co., Ltd., Jiangsu Prov. The low-smoke halogen-free flame-retardant isolating material material of exploitation, 60 years life materials, the trade mark：XJ-32HB or XJ-33H.
Cable core gap filling in first lapping layer has unvulcanised low-smoke non-halogen flame-retardant thermosetting property filler material.
Filler material can specifically select three kinds of materials, be respectively that low-smoke non-halogen flame-retardant fills out core material (for preventing core from seriously becoming Shape or flattening), low-smoke non-halogen flame-retardant liner layer material (be used to protect cable core to damage) or low-smoke bittern-free highly from mechanical stress Combustible material.
Strip (i.e. gasket for packing) is made in filler material, its diameter range is 1.55~1.90) mm.
The high-temperature polyester band of the overlapping wrapped nominal thickness 0.04mm of first lapping layer, puts up width and is not less than 5mm； (it is 8mm preferably to put up width.The thickness range of the lapping layer is (0.04~0.16) mm.)
The shielded layer is metal wire knitted shielded layer；Count is not less than 80% (count preferably 83%), gold It is the tinned copper wire as made from " calorizing " to belong to silk；The diameter range of tinned copper wire is 0.12~0.35mm, tinned copper wire it is straight Footpath is preferably 0.25mm；
The thickness range of second lapping layer is (0.04~0.16) mm.
Second lapping layer be by the high-temperature polyester band of nominal thickness 0.04mm it is overlapping it is wrapped form, put up width and be not less than 5mm；(it is 8mm preferably to put up width).The material of twining package tape, put up the requirement such as width, identical with the first lapping layer.
The oversheath is to be extruded to form by low-smoke non-halogen flame-retardant thermosetting property eraser sheath material；The thickness range of oversheath is 1.4~3.9mm.(the optional model/trade mark of protective cover material has XH-32HB, XH-33HB).
Preferably, the nominal thickness of oversheath is 2.1mm, and average thickness is not less than nominal value, and thinnest part thickness should not be small In the 85%-0.1mm of nominal thickness.
Further, more core from-inner-to-outers are divided into multilayer, and the stranding direction of adjacent layer core is identical.
Further, the first lapping layer is that overlapping wrapped floor height temperature polyester belt is formed, and puts up width not less than 5mm (preferably It can be 8mm to put up width numerical value)；
Conductor uses the 5th kind of warping strength tinned copper conductor, uses " calorizing " tinned copper wire.
The insulating layer material is low-smoke non-halogen flame-retardant ethylene-propylene rubber material.Insulating layer material is by accelerating heat ageing to try Test, meet the requirement in 60 year service life.The thickness of insulating layer will exceed nominal thickness as defined in GB/T120706, ensure to make for a long time Electrical insulation properties are normal during.
The shielding material is " calorizing " tinned copper wire, is not in that obvious oxidation and discoloration are existing in use As good to the shield effectiveness of signal.
The sheath material is low-smoke non-halogen flame-retardant thermosetting property rubber material, has the excellent machinability of thermoplastic concurrently With the high intensity of thermosets, and there is excellent bending resistance, be highly suitable for installing in closing narrow space, Used in fixed laying occasion.
Compared with prior art, this cable has a special structure, all cores of cabling procedure stranding several times, intermediate layer Unvulcanised filled layer is extruded outside cable core, and adjacent layer core stranding direction is identical in cabling process, reduces the situation that core flattens, The pliability of finished cable is improved at the same time.The service life of cable was brought up to 60 years by 20 years, and whole cable uses Entirely halogen-free low-smoke flame retardant material, meets the environmental requirement in all standards that cable for nuclear power station is applicable in.
Brief description of the drawings
Fig. 1 is the radial cross section of this cable；
In figure：Conductor 1, insulating layer 2, the 3, first lapping layer 4.1 of filling, the second lapping layer 4.2, shielded layer 5, oversheath 6.
Embodiment
The technical program is further described below with embodiment below in conjunction with the accompanying drawings：
As Fig. 1, a kind of circular crane circle control cable, its structure are：The external diametrical extent of cable is 15.2~ 38.5mm；
Core is formed by the 5th kind of warping strength tinned copper conductor outer wrapping insulating layer；More cores are twisted jointly with filler material Form cable core；The first lapping layer, shielded layer, the second lapping layer and oversheath are wrapped up successively outside cable core；
The conductor is to be closed to obtain the 5th kind of warping strength tinned copper conductor by more tin-coated copper tow；The diameter range of conductor It is 0.91~4.5mm；
The insulating layer is to be extruded to form by low-smoke non-halogen flame-retardant ethylene-propylene rubber cable insulating material, the thickness range of insulating layer It is 0.8~2.0mm；
Cable core gap filling in first lapping layer has unvulcanised low-smoke non-halogen flame-retardant thermosetting property filler material；
The structure of first lapping layer and the second lapping layer is identical, their thickness range is 0.04~0.16mm；
The shielded layer is metal wire knitted shielded layer, and count is not less than 80%, and wire is made by " calorizing " The tinned copper wire obtained；The diameter range of tinned copper wire is 0.12~0.35mm；
The oversheath is to be extruded to form by low-smoke non-halogen flame-retardant thermosetting property eraser sheath material；The thickness range of oversheath is 1.4~3.9mm.
In the present embodiment,
The number of conductors is 37, and conductor specification is 1.5mm2；
The thickness of the insulating layer is 1.0mm；The trade mark of Insulation Material is：XJ-32HB or XJ-33H.
More core from-inner-to-outers are divided into multilayer, and the stranding direction (direction of lay) of adjacent layer core is identical.
The filler material is that low-smoke non-halogen flame-retardant fills out core material, low-smoke non-halogen flame-retardant liner layer material or low-smoke bittern-free highly fire-proof Material；Filler material is in the cable core gap being filled in the form of gasket for packing in the first lapping layer；A diameter of the 1.55 of gasket for packing ~1.90mm.
First and second lapping layer be all by the high-temperature polyester band of nominal thickness 0.04mm it is overlapping it is wrapped form, put up width Degree is not less than 5mm (preferably 8mm).
The count of the metal wire knitted shielded layer is 83%, and the diameter of tinned copper wire is preferably 0.25mm.
The trade mark of protective cover material is XH-32HB or XH-33HB；The nominal thickness of oversheath is 2.1mm, and average thickness is not less than Nominal value, thinnest part thickness should be not less than the 85%-0.1mm of nominal thickness.
It is as follows by detection, the performance parameter of this cable：
1. conductor DC resistance is not more than 13.7 Ω/km.
2. insulation heat extension：250 DEG C, 15min, 0.2N/mm2Condition, maximum elongation rate 175% under load, after cooling most Big permanent elongation 15%.
3. mechanical performance before and after insulation ag(e)ing：Tensile strength is not less than 7.0Mpa before aging, and elongation at break is not less than 200%；135 DEG C, after 168h agings, variation in tensile strength maximum ± 30%, elongation at break change rate maximum ± 30%.
4. ac voltage withstanding is tested：Apply 3.5kV alternating voltages and continue 5min, cable does not puncture.
5. mechanical performance before and after sheath aging：Tensile strength is not less than 9.0Mpa before aging, and elongation at break is not less than 200%；120 DEG C, after 240h agings, variation in tensile strength maximum ± 25%, elongation at break change rate maximum ± 25%.
6.20 DEG C of insulation resistance constants：Environment temperature is 20 DEG C, and insulation resistance constant is not less than 3670M Ω km.
7. cable minimum bending radius：Cable Bending Radius is not less than 231mm.
8. sheath allows maximum drawbar pull：Sheath allows tractive force to be not more than 1688N.

Claims (8)

  1. A kind of 1. circular crane circle control cable, it is characterized in that structure is：The external diametrical extent of cable is 15.2~38.5mm；
    Core is formed by the 5th kind of warping strength tinned copper conductor outer wrapping insulating layer；More cores are twisted and form jointly with filler material Cable core；The first lapping layer, shielded layer, the second lapping layer and oversheath are wrapped up successively outside cable core；
    The conductor is to be closed to obtain the 5th kind of warping strength tinned copper conductor by more tin-coated copper tow；The diameter range of conductor is 0.91~4.5mm；
    The insulating layer is to be extruded to form by low-smoke non-halogen flame-retardant ethylene-propylene rubber cable insulating material, and the thickness range of insulating layer is 0.8~2.0mm；
    Cable core gap filling in first lapping layer has unvulcanised low-smoke non-halogen flame-retardant thermosetting property filler material；
    The structure of first lapping layer and the second lapping layer is identical, their thickness range is 0.04~0.16mm；
    The shielded layer is metal wire knitted shielded layer, and count is not less than 80%, and wire is obtained by " calorizing " Tinned copper wire；The diameter range of tinned copper wire is 0.12~0.35mm；
    The oversheath is to be extruded to form by low-smoke non-halogen flame-retardant thermosetting property eraser sheath material；The thickness range of oversheath is 1.4 ~3.9mm.
  2. 2. cable according to claim 1, it is characterized in that the number of conductors is 37, conductor specification is 1.5mm2；
    The thickness of the insulating layer is 1.0mm；The trade mark of Insulation Material is：XJ-32HB or XJ-33H.
  3. 3. cable according to claim 1, it is characterized in that more core from-inner-to-outers are divided into multilayer, adjacent layer core into Cable direction is identical.
  4. 4. cable according to claim 1, it is characterized in that the filler material, which is low-smoke non-halogen flame-retardant, fills out core material, low smoke and zero halogen Fire-retardant liner layer material or low-smoke bittern-free highly fire-proof material；Filler material is filled in the form of gasket for packing in the first lapping layer In cable core gap；A diameter of 1.55~1.90mm of gasket for packing.
  5. 5. cable according to claim 1, it is characterized in that first and second lapping layer is all by nominal thickness 0.04mm The overlapping wrapped composition of high-temperature polyester band, puts up width and is not less than 5mm.
  6. 6. cable according to claim 5, wrapped taken it is characterized in that the high-temperature polyester band of first and second lapping layer is overlapping Lid width is all 8mm.
  7. 7. cable according to claim 1, it is characterized in that the count of the metal wire knitted shielded layer is 83%, plating The diameter of tin copper wire is preferably 0.25mm.
  8. 8. cable according to claim 1, it is characterized in that the trade mark of protective cover material is XH-32HB or XH-33HB；
    The nominal thickness of oversheath is 2.1mm, and average thickness is not less than nominal value, and thinnest part thickness should be not less than nominal thickness 85%-0.1mm.
CN201721157564.1U 2017-09-11 2017-09-11 A kind of circular crane circle control cable Active CN207302669U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721157564.1U CN207302669U (en) 2017-09-11 2017-09-11 A kind of circular crane circle control cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721157564.1U CN207302669U (en) 2017-09-11 2017-09-11 A kind of circular crane circle control cable

Publications (1)

Publication Number Publication Date
CN207302669U true CN207302669U (en) 2018-05-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721157564.1U Active CN207302669U (en) 2017-09-11 2017-09-11 A kind of circular crane circle control cable

Country Status (1)

Country Link
CN (1) CN207302669U (en)

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