01
Cov qauv yooj yim ntawm cov hlau - puag ncig
1. Ib leeg xaim Lub ntsiab ntau yam yog tooj liab ib leeg xaim, txhuas ib leeg xaim thiab tooj liab aluminium alloy hlau. Txoj kab uas hla ntawm cov xaim yog siv raws li cov qauv kev ntsuas, thiab qhov ntau yog los ntawm 0.01mm txog 3.00mm. Tsuas yog ib feem ntawm lub voj voog ib lub xaim uas siv ncaj qha los ua cov khoom lag luam, feem ntau ntawm cov kab ib kab yog ib nrab -cov khoom tiav siv los ntawm kev sib tw ib lub xaim rau hauv ntau cov xov hlau.
Ntxiv nrog rau cov khoom siv ib ncig ib kab, kuj tseem muaj cov kab sib txuas ib leeg. Feem ntau siv yog bimetal round ib leeg hlau, xws li txhuas clad steel hlau (siab conductivity ntawm txhuas, muaj zog tensile lub zog ntawm steel hlau), tooj liab clad aluminium hlau (siab conductivity ntawm tooj liab, lub teeb txhuas) thiab plated ib tug hlau, xws li tinned tooj liab. hlau, Nickel{0}}plated tooj liab hlau.
2. The round stranded wire and cable is a long-length product, which needs to be wound and pulled many times during production, installation and use. If the wire with larger cross-section is not used, the small-diameter single wire is twisted into a certain cross-section. Stranded, the product will not be manufactured and used. Different usage situations and conditions require wires and cables to have different degrees of flexibility—that is, bendable or twistable properties. Therefore, the stranded wires used in various products have different requirements in terms of flexibility, etc., so 7 kinds of wire structures are specified in the wire standard, and Table 1 is the wire structure specified by the standard.
Cov hlau uas muaj cov khoom siv tib yam thiab tib seem tuaj yeem tsim los ntawm ntau cov qauv, uas yog, tus naj npawb thiab txoj kab uas hla ntawm ib lub xov hlau sib txawv. Qhov ntau ntawm cov xaim nyob hauv tib seem (qhov nyias nyias ntawm ib txoj kab uas hla), qhov yooj yim dua ntawm cov xaim.
Cov txheej txheem tsis sib xws ntawm cov xaim xaim xaim yog tus ntoo khaub lig- ntu ntu ntawm cov xaim (hauv mm2), tus naj npawb ntawm cov xov hlau ib leeg thiab txoj kab uas hla ntawm ib lub xaim (mm), thiab qhov sib piv ntawm cov kab sib tw twisted .
3. Derivative qauv ntawm ncig stranded hlau
(1) Compression type round stranded wire Thaum lub sij hawm xaim stranding txheej txheem, cov stranded hlau yog compressed los ntawm ib tug compression log, thiab lwm yam., kom tus neeg xyuas pib occupies txog 90 feem pua ntawm tus ntoo khaub lig- ntu. Thawj yog kom flatten lub protruding zoo nyob rau saum npoo ntawm cov hlau, uas yog conducive mus rau lub extrusion ntawm nruab nrab thiab high voltage XLPE cable mus rau ib tug heev nyias (0.5-1mm), thiab lub puab semiconductor txheej (rau ib tug niaj hnub hluav taws xob teb. ) tsis yooj yim rau punctured. Qhov thib ob yog los txo qhov sib txawv ntawm ib kab.
(2) Txoj kab uas hla ntawm qhov zawj sab hauv ntawm lub voj voog stranded xaim nrog lub puab hollow zawj feem ntau yog 14-18mm. Muaj ob yam khoom uas yuav tsum tau muaj, uas yog, cov roj- puv cable yog siv los ua cov roj zawj rau cov roj ntws, thiab siab - cable tam sim no yog siv los ua cov channel rau hauv cov cua txias ntawm cov roj los yog kua. (Tuaj yeem ua kom muaj peev xwm tam sim no). Cov xaim ntawm cov roj-cov kab txuas feem ntau yog ua los ntawm Z- kab lossis hneev - zoo li ib lub xaim twisted rau hauv ib lub nplhaib-zoo li seem, los yog ib puag ncig ib lub xaim tuaj yeem twisted rau hauv ib spiral. Raws li cov cua txias hauv hom yuam kom txias, lub puab qhov zawj txais yuav ib lub raj hlau kaw.
(3) Lub kiv cua-zoo li tus xaim yog cov qauv hlau siv rau nruab nrab thiab qis voltage 3-4 core roj- ntawv insulated fais fab cables (1-10kv), txhawm rau ua kom cov hlua hluav taws xob insulated hauv cov duab ntawm 3 120 tom qab ntawv qhwv cov ntaub ntawv, twisted rau hauv lub voj voog thaum cabling zoo li (plaub-core cable yog peb 100, nruab nrab kab 60 kiv cua), thiaj li yuav txuag tau ntau. ntawm cov khoom siv sab nrauv. Cov kab tsis tshua siv.
02
Lwm cov duab ntawm cov qauv hlau
1. Flat hlau thiab phaj Tus neeg xyuas pib yog ua rau hauv ib lub tiaj tiaj tiaj tiaj nrog qhov dav ntau zaus loj dua nws cov thickness, uas yog hu ua lub tiaj tus hlau lossis phaj. Flat hlau yog tsuas yog siv rau enameled hlau thiab qhwv hlau kom tau raws li cov kev xav tau ntawm nruab nrab, loj thiab txawm ntxiv - loj motors thiab transformers los txhim kho lub qhov puv tus nqi. Ntxiv nrog rau kev siv cov khoom siv hloov pauv, cov phaj feem ntau yog siv los ua cov npav npav (tseem hu ua cov npav npav) uas muab cov dej ntws loj hauv cov chaw tsim hluav taws xob, cov chaw nres tsheb thiab cov chaw tsim khoom loj. Ntxiv -loj (ntau txhiab square millimeters ntawm cross-section) busbars tuaj yeem ua rau hauv qhov zawj. Lub busbar yog cov khoom lag luam liab qab thiab yuav tsum tau insulated nrog insulators thaum lub sij hawm installation.
Cov txheej txheem tsis sib xws ntawm cov hlau tiaj tus thiab daim ntawv yog tus ntoo khaub lig-sectional cheeb tsam, dav, thickness thiab radian ntawm plaub fab.
2. The wire structure of the coaxial cable As a coaxial cable for information transmission, a "pair" is used as a working circuit, and the inner wires are all round single wires, and the outer conductor must be surrounded by a concentric outer circle. The inner and outer conductors must be supported to maintain concentric circles, so the structure of the outer conductor must be closely related to the supporting structure. If the outer conductor is longitudinally wrapped into a round tube shape with a harder copper strip, and rolled longitudinally into a thread to facilitate bending, the support can use insert type insulating support, such as the support with solid core or lotus-like mid-hole or foam plastic insulation , the outer conductor can use copper wire wrapping, braiding and other structures. Usually, the medium coaxial cable adopts the insert type insulation and the small coaxial cable or the micro coaxial cable generally adopts the outer conductor structure of braided or wrapped copper wire.
3. Tshwj xeeb- zoo li tus conductors, uas yog, conductors nrog tshwj xeeb duab nyob rau hauv cross-section, feem ntau yog siv raws li ib tug conductor Cheebtsam nyob rau hauv motors thiab keyboards, xws li commutator cov ntaub ntawv nyob rau hauv motors, thiab riam taub hau Cheebtsam nyob rau hauv hloov. Txawm li cas los xij, ntxiv rau kev siv cov tuab tuab puag ncig tooj liab ua cov khoom siv, kuj tseem muaj cov khoom ua los ntawm gourd -zoo li tus, ob npaug - zawj thiab lwm yam duab.
4. Tsis yog-cov khoom siv hlau xws li cov khoom siv kho qhov muag hauv cov kab hluav taws xob kho qhov muag, cov xaim hluav taws xob yas rau cov xov tooj hluav taws xob tsheb thiab cov xov tooj cua lub mloog pob ntseg, lossis cov xov paj hauv xov tooj cua dipped hauv cov graphite conductive.
03
Twisting txoj kev ntawm round stranded hlau
Lub voj voj voog ntawm ntau yam ntoo khaub lig- ntu yog twisted los ntawm ntau lub voj voog ib leeg ntawm tib txoj kab uas hla, thiab cov nram qab no peb txoj kev stranding feem ntau yog saws: tsis tu ncua stranding, irregular stranding (bundled stranding) thiab compound stranding ( complex stranding). Cov xov hlau ntawm qee cov khoom tshwj xeeb kuj muaj cov qauv xws li ib lub xov hlau uas muaj cov kab sib txawv, uas raug tshem tawm hauv kab lus no.
1. Tsis tu ncua stranded tsis tu ncua stranded ncig stranded hlau muaj ob peb yam ntxwv: txoj kab uas hla ntawm ib tug hlau yog tib yam; txheej nruab nrab yog 1 ib leeg hlau, thawj txheej yog 6, thiab ces txhua txheej yog nce los ntawm 6, uas yog, 1 ntxiv 6 ntxiv rau 12 ntxiv? ?????; Cov kev taw qhia twisting ntawm txhua ib lub xaim yog qhov sib txawv, tab sis nws tau teev tseg tias txheej txheej sab nraud yuav tsum nyob rau hauv txoj cai (Z kev taw qhia), lub hom phiaj yog los pab txhawb kev sib txuas ntawm ob lub xov hlau. Yog li ntawd, cov qauv ntawm cov hlau tsis tu ncua yog qhov ruaj khov tshaj plaws, uas yog qhov tsim nyog rau qhov tsawg tshaj plaws sab nraud txoj kab uas hla ntawm bending, twisting thiab twisting, thiab cov duab yog puag ncig. Thaum txoj hlua khi raug txiav, ib lub xaim yuav tsis thaws xoob. Yog li ntawd, nws yog dav siv nyob rau hauv xov hlau thiab cables rau lub hwj chim systems, uas yog, I thiab II hlau lug nyob rau hauv Table 1.
2. Stranding Rau cov xov hlau thiab cov cables uas xav tau kev hloov pauv zoo heev, cov qauv hlau ntawm chav kawm III -V yuav tsum tau siv rau hauv Table 1. Cov yam ntxwv yog: tus naj npawb ntawm cov xov hlau yog qhov loj tshaj plaws (txog 20}0 lossis ntau dua), txoj kab uas hla ntawm ib lub xaim (qhov thinnest yog li 0.05mm), thiab cov qauv stranded ntawm pob twist thiab ntau yam twist. yuav tsum tau saws.
Txoj kev bundling thiab twisting (bundling) yog bundled kaum ob ntawm nyias ib lub xov hlau ua ke los ntawm ib lub nplhaib me me tsis muaj txheej, thiab ces ntswj lawv nyob rau hauv tib txoj kev (zoo ib yam li twisting ntawm paj rwb yarns tom qab ob npaug), thiab ces twist lawv nyob rau hauv tib txoj kev (zoo ib yam li twisting ntawm paj rwb yarns tom qab ob npaug), thiab ces twist lawv nyob rau hauv tib txoj kev. tib yam kev taw qhia. Hlau tuag forming. Sab nraud txoj kab uas hla ntawm cov bundled hlau yog tsis nruj heev, thiab cov duab tsuas yog approximated rau ib lub voj voog. Txawm li cas los xij, vim hais tias cov xov hlau ib leeg yog qhov xoob thiab cov xaim ib leeg nyias nyias, lawv hloov tau yooj yim dua. Thaum extruding los yog qhwv rwb thaiv tsev, cov duab ntawm cov khoom tuaj yeem tswj tau los ua puag ncig. puab.
3. Re-twisted Thaum cov khoom yuav tsum tau tshwj xeeb yog mos thiab cov hlau hlais -section yog loj, ntau -twist yuav tsum tau siv. Piv txwv li, ib txoj kab hluav taws xob mining nrog lub xaim hla-section ntawm 185mm2 muaj cov xaim ntawm 2562/0.3.
Multiple stranding means that dozens of single wires are first bundled into strands, and then multiple strands are twisted into wires in a regular twisting manner. Sometimes it is necessary to use the secondary double twist, that is, twist 7-19 strands into "large strands", and then twist the "large strands" as single wires.
04
Technical Parameters ntawm Stranded Hlau
Ntau cov txheej txheem tseem ceeb yuav tsum tau tswj xyuas hauv cov txheej txheem stranded xaim, uas yog qhov tseeb ntawm cov txheej txheem ntawm cov hlua khi hlua khi, uas yuav tsum tau teev tseg thaum tsim cov khoom tsim thiab siv los ntawm cov ntaub ntawv txheej txheem. Lub ntsiab technical tsis yog: pitch diameter ratio, twisting rate, twisting direction.
1. The pitch-diameter stranded wire is the single wire of the outer layer twisted to the outer surface of the inner layer in a spiral direction (see Figure 2). Twisting angle); the length L that the single wire is wound around the inner wire; D' in the figure represents the circumference length based on the center line of the single wire of the layer, and D' is the central diameter of the circumference; h is the single wire when twisted. The distance along the centerline direction is called the twisting pitch.
The ratio of the twisting pitch of this layer of single wires divided by the diameter of the twisted wire is called "pitch diameter ratio m", which is the most important process parameter in the wire twisting and is comparable.
Theoretically, the calculated pitch ratio should be based on the centerline diameter D' of the single wire of this layer (called the theoretical pitch ratio); but for practical convenience, it can be calculated according to the measured outer diameter D of the layer of strands (called the theoretical pitch ratio) Practical pitch ratio). The calculation formula of the practical pitch ratio is as follows: (the unit of h, D is mm)
Lub suab loj - txoj kab nruab nrab, uas yog, lub kaum sab xis loj, qhia txog qhov me me ntawm kev sib tw, thiab rov ua dua. Cov hlau uas muaj qhov sib piv me me muaj qhov sib tw nruj dua, cov qauv ruaj khov dua, cov xaim muag muag thiab kev hloov pauv tau zoo, tab sis qhov nrawm nrawm. Yog li ntawd, nyob rau hauv cov khoom txheem, muaj ib tug tshwj xeeb ntau yam rau lub twisted suab piv ntawm cov hlau.
2. Stranding rate Nyob rau hauv ib lub suab ntev ntawm stranded hlau, qhov piv ntawm ib tug hlau unfolding ntev mus stranding suab yog hu ua twisting coefficient, thiab qhia nyob rau hauv feem pua yog hu ua twisting rate.
Tus nqi twisting feem ntau yog siv rau kev suav cov koom haum tsim khoom thiab siv cov khoom siv.
3. Filling factor Qhov piv ntawm qhov sib npaug ntawm tus ntoo khaub lig- ntu ntawm cov kab ib kab mus rau tus ntoo khaub lig-sectional cheeb tsam ntawm tus neeg xyuas pib tus qauv yog hu ua qhov filling, thiab tus nqi ib txwm tsawg dua 1 . Ces (1-) sawv cev rau qhov void ratio nyob rau hauv seem hlau. Qhov chaw yog ib txoj hlua khi tsis tu ncua, txog 0.75.
Qee cov khoom xws li XLPE fais fab cables, waterproof thiab kaw cable conductors. Txhawm rau siv qhov sib sib zog nqus compression hom hlau, tuaj yeem nce mus rau 0.89-0.92. Ib lub xaim uas muaj cov khoom ntim loj tuaj yeem tiv thaiv cov dej vapor los ntawm kev nthuav dav mus rau ob sab thiab tiv thaiv kev txuas ntxiv ntawm kev puas tsuaj sab nraud vim yog tsim ntawm capillary pores vim lub qhov hws ntawm tib cov xov hlau thaum cov dej vapor nkag mus rau hauv lub rwb thaiv tsev. Tom qab cov hlau yog compressed, ib leeg hlau, tshwj xeeb tshaj yog sab nraud ib leeg, yog deformed loj, tab sis lub roundness ntawm nto ntawm cov hlau yog zoo dua. Compressed hlau zoo li me ntsis txhav tshaj qhov tsis muaj compressed.
4. Stranding direction Muaj tsuas yog ob txoj kev sib tw thaum ib lub xov hlau sib tw, uas yog sab laug -kev taw qhia (s kev taw qhia) thiab sab xis - tes taw qhia (z- kev taw qhia) . Nyob rau hauv cov qauv sib tw tsis tu ncua, nws tau teev tseg tias ob txheej uas nyob ib sab ntawm ib lub xov hlau yuav tsum tau txais cov lus qhia sib txawv; uas yog, thawj txheej sab laug, thiab txheej thib ob yog txoj cai.
