Aviatsiya vilkasini joriy etish
Aviatsiya vilkasi
Aviatsiya vilkalari elektr zanjirlarini bog'laydigan elektromexanik komponentlardir. Turli xil elektr parametrlari turli xil tegishli mahsulotlarga ega, shuning uchun to'g'ri aviatsiya vilkasini tanlash juda muhim mavzudir!
Aviatsiya vilkalarini, shuningdek, turli xil elektr zanjirlarida keng qo'llaniladigan va ulash yoki o'chirish davrlarini o'ynaydigan rozetkalar deb atash mumkin. Aviatsiya vilkalarining ishonchliligini oshirish, birinchi navbatda, ishlab chiqaruvchining mas'uliyati. Biroq, aviatsiya vilkalarining xilma-xilligi va qo'llanilishining keng doirasi tufayli aviatsiya vilkalarini to'g'ri tanlash ham aviatsiya vilkalarining ishonchliligini oshirishning muhim jihati hisoblanadi. Faqat ishlab chiqaruvchi va foydalanuvchining birgalikdagi sa'y-harakatlari orqali aviatsiya vilkasini maksimal darajada oshirish mumkin.
Aviatsiya vilkalari uchun turli tasniflash usullari mavjud. Chastotaga ko'ra, yuqori-chastotali aviatsiya vilkalari va past-chastotali aviatsiya vilkalari mavjud; shakliga ko'ra, maqsadiga ko'ra dumaloq konnektorlar mavjud: shkaflar uchun aviatsiya vilkalari, audio jihozlar uchun aviatsiya vilkalari, elektr quvvati aviatsiya vilkalari, maxsus-maqsadli aviatsiya vilkalari va boshqalar. Quyida asosan tanlash usuli muhokama qilinadi. past-chastotali aviatsiya vilkalari (chastotasi 3MHZ dan past).
Aviatsiya vilkasi
Xavfsizlik parametrlarini o'zgartirish
1: Izolyatsiyaga qarshilik
Insulation resistance refers to the resistance value that occurs when a voltage is applied to the insulating part of the aviation plug, so that leakage current occurs in or on the surface of the insulating part. It is mainly affected by factors such as insulation material, temperature, humidity, pollution and so on. The insulation resistance value provided on the aviation plug sample is generally the target value under the standard atmospheric conditions. Under some environmental conditions, the insulation resistance value will decrease unnecessarily. In addition, pay attention to the experimental voltage value of the insulation resistance. Depending on the insulation resistance (MΩ) = the voltage applied to the insulator (V)/leakage current (μA), different voltages are applied, and there are different results. In the experiment of aviation plug, the applied voltage is generally 10V, 100V and 500V.
2: kuchlanishga chidamli
Chidamli kuchlanish - bu teginish juftligining izolyatsion qismlari o'rtasida yoki izolyatsion qism va er o'rtasida qabul qilinishi mumkin bo'lgan chegara kuchlanishi, bu muntazam vaqtda buzilishsiz qo'shimcha kuchlanishdan yuqori. Bu asosan masofaga teginish va o'tish masofasi va geometriyasi, izolyator materiali, atrof-muhit harorati va namligi va atmosfera bosimiga ta'sir qiladi.
3: Yonuvchanlik
Har qanday aviatsiya vilkasi ish paytida oqimdan ajralmas bo'lib, yong'in xavfi mavjud. Shu sababli, aviatsiya vilkasi nafaqat yonishni oldini olish, balki yonish va yong'in sodir bo'lganda-qisqa vaqt ichida o'zini o'chirish uchun ham talab qilinadi. Tanlashda,{1}}olovga chidamli va oʻzini oʻchirish{2}}izolyatsiya qiluvchi materiallarga ega boʻlgan havo vilkalarini tanlashga eʼtibor bering.
4: Mexanik parametrlar
The touch pressure in the aviation plug is an important target, which directly affects the size of the touch resistance and the wear amount of the touch pair. In most configurations, direct measurement of touch pressure is reasonably difficult. Therefore, the touch pressure is often directly measured by the separation force of one foot. For circular pinhole touch pairs, standard pins with regular weights are generally used to check the ability of the female touch piece to hold the weight. Generally, the diameter of the standard pin is -5μm, the lower limit of the diameter of the male touch piece. The total separation force is generally twice the sum of the upper and lower separation forces of one foot. When the total separation force exceeds 50N, it is quite difficult to insert and pull out manually. Of course, for some test equipment or some special requirements, aviation plugs with zero insertion force can be used, and aviation plugs can be automatically dropped off.
5: Mexanik hayot
The mechanical life of the aviation plug refers to the plugging life, and the general rule is 500 to 1000 times. When reaching the mechanical life of this rule, the touch resistance, insulation resistance and withstand voltage of the aviation plug should not exceed the value of the rule. Strictly speaking, mechanical life is a vague concept. The mechanical life should have a certain relationship with the time. Obviously, the situation is different when it is used up 500 times in 10 years and 500 times in 1 year. It's just that there is no more economical and scientific way to measure it.
6: Sensorli juftliklar va teshiklar soni
Birinchidan, teginish juftlarining soni kontaktlarning zanglashiga olib keladigan ehtiyojlariga qarab tanlanishi mumkin va shu bilan birga, elektr konnektorining hajmi va umumiy ajratish kuchining o'lchamini hisobga olish kerak. Sensorli juftlarning soni qanchalik ko'p bo'lsa, albatta, hajm qanchalik katta bo'lsa va umumiy ajratish kuchi shunchalik katta bo'ladi. Ishonchlilik talablari yuqori bo'lgan va ovoz balandligi maqbul bo'lgan ba'zi hollarda ulanishning ishonchliligini oshirish uchun ikkita juft sensorli juftlikni parallel ravishda ulash usuli qo'llanilishi mumkin.
Aviatsiya vilkalarining vilkalari va rozetkalarida pinlar (erkak teginish qismlari) va raz'emlar (ayol teginish qismlari) odatda uskunaga almashtirilishi mumkin. Amaliy foydalanishda u vilka va rozetkaning ikkala uchining jonli holatiga qarab tanlanishi mumkin. Agar rozetkani tez-tez zaryad qilish kerak bo'lsa, siz uyali rozetkani tanlashingiz mumkin. Jekli rozetka, uning jonli teginish qismlari izolyatorga ko'milganligi sababli, inson tanasi uchun nisbatan xavfsiz bo'lgan jonli teginish qismlariga tegishi oson emas.
7: tebranish, zarba, zarba
The first consideration is the electrical continuity of the touch pair when the aviation plug oscillates, impacts, and bumps under the conditions of regular frequency and acceleration. The touch pair is momentarily disconnected under this dynamic stress condition. The regular break times are generally 1μs, 10μs, 100μs, 1ms and 10ms. What should be paid attention to is how to judge the instantaneous failure of the touch pair. Generally speaking, when the voltage drop between the two ends of the closed touch pair (contact) exceeds 50 percent of the power supply electromotive force, it can be concluded that the closed touch pair (contact) is faulty. That is to say, there are two conditions for judging whether an instantaneous interruption occurs: the duration and the voltage drop, both of which are indispensable.
8: Ulanish usuli
Aviatsiya vilkalari odatda vilkalar va rozetkalardan iborat bo'lib, ular orasida vilka erkin uchi aviatsiya vilkasi deb ham ataladi va rozetka ham sobit aviatsiya vilkasi deb ataladi. Devrenning ulanishi va uzilishi vilkalar, rozetkalar va kiritish va ajratish bilan yakunlanadi, shuning uchun vilkalar va rozetkalarning turli ulanish usullari paydo bo'ldi. Dairesel aviatsiya vilkalari uchun asosan uchta usul mavjud: tishli ulanish, nayzali ulanish va marmar aloqa. Ularning orasida tishli ulanish eng keng tarqalgan. U oddiy ishlov berish texnologiyasi, past ishlab chiqarish xarajati va keng qo'llash ko'lamining afzalliklariga ega, lekin ulanish tezligi sekin va tez-tez kiritish va olib tashlash va tez ketma-ketlikni talab qiladigan holatlar uchun mos emas. Bayet{0}}tipli ulanish uchta nayzali uyasi uzunroqligi tufayli tezroq ulanish tezligiga ega, ammo uni ishlab chiqarish ancha murakkab va narxi yuqori. Marmar aloqasi uchta ulanish usuli orasida eng tezkor ulanish hisoblanadi. U aylanish harakatini talab qilmaydi, faqat ulanish, ajratish va qulflash funktsiyalarini bajarish uchun chiziqli harakatni amalga oshirishi kerak. Bu toʻgʻridan-toʻgʻri surish{1}}ulanish usuli boʻlgani uchun u faqat umumiy ajratish kuchi past boʻlgan aviatsiya vilkalari uchun javob beradi. Odatda, bu kichik aviatsiya vilkalarida ko'proq uchraydi.
9: Uskunaning usuli va tashqi ko'rinishi
Aviatsiya vilkasi jihozlari old va orqa jihozlarga ega va uskunani mahkamlash usullariga perchinlar, vintlardek, yoqalar yoki aviatsiya vilkasini tezda qulflash kiradi. Shuningdek, vilka va rozetka ham mavjud boʻlib, ularning ikkalasi ham bepul{0}}aviatsion vilkalar, ular-releli aviatsiya vilkalari deb ataladi.
10: Atrof-muhit parametrlari
Atrof-muhit parametrlari asosan atrof-muhit harorati, namlik, harorat o'zgarishi, atmosfera bosimi va korroziy muhitni o'z ichiga oladi. Elektr konnektori ishlatiladigan, saqlanadigan va tashiladigan muhit uning funktsiyasiga sezilarli ta'sir ko'rsatadi, shuning uchun haqiqiy atrof-muhit sharoitlariga muvofiq tegishli aviatsiya vilkasini tanlash kerak.
11: Atrof-muhit harorati
Aviatsiya vilkasining metall materiali va izolyatsion materiali elektr ulagichining ish muhiti haroratini aniqlaydi. Yuqori harorat chekka materialga zarar etkazadi, bu esa izolyatsiya qarshiligini va kuchlanishning pasayishiga olib keladi; metallar uchun yuqori harorat teginish juftligini egiluvchanligini yo'qotishi, oksidlanishni tezlashtirishi va qoplamaning yomonlashishiga olib kelishi mumkin. Umumiy atrof-muhit harorati -55100 daraja va maxsus holatlarda u yuqori bo'lishi mumkin.
12: nam
Relative humidity greater than 80 percent is the primary cause of electrical breakdown. The humid environment causes the absorption and dispersion of water vapor on the surface of the insulator, which simply reduces the insulation resistance to below the MΩ level. Long-term exposure to a high-humidity environment will cause physical deformation, differentiation, escape of products, breathing effects, electrolysis, and corrosion. and cracks. Especially for electrical connectors outside the equipment, environmental conditions such as humidity, water infiltration and pollution are often considered. In this case, sealed aviation plugs should be selected. For water-tight and dust-tight electrical connectors, the shell protection level of GB4208 is generally used to indicate.
13: haroratning keskin o'zgarishi
Namlikni keskin o'zgartirish tajribasi sovuq muhitdan issiq muhitga o'tish uchun aviatsiya vilkasi uskunasidan foydalanishning haqiqiy ishlashini simulyatsiya qilish yoki kosmik transport vositalari va zondlarning atrof-muhit haroratining tez o'zgarishini simulyatsiya qilishdir. Haroratning keskin o'zgarishi izolyatsion materialning yorilishi yoki parchalanishi mumkin.
14: Atmosfera bosimi
Havo yupqa bo'lgan yuqori balandliklarda plastmassa gaz chiqaradi, bu esa kontakt juftligini ifloslantiradi, korona hosil bo'lish tendentsiyasini oshiradi, kuchlanish qarshiligini pasaytiradi va kontaktlarning zanglashiga olib keladi-. Balandlik ma'lum bir qiymatga yetganda, plastmassaning ishlashi yomonlashadi. Shuning uchun, yuqori balandliklarda muhrlanmagan aviatsiya vilkalaridan foydalanganda, ularni yo'q qilish kerak. Past havo bosimida tavsiya etilgan kuchlanishni pasaytirish omillari jadvalda ko'rsatilgan.
15: Korroziy muhit
Aviatsiya vilkalarining turli xil korroziy muhitlariga ko'ra, mos keladigan metall, plastmassa va qoplama tuzilmalariga ega aviatsiya vilkalarini tanlang, masalan, tuz purkagich muhitida ishlatiladigan aviatsiya vilkalari, agar korroziyaga qarshi metall yuzasi bo'lmasa, ishlash tez yomonlashadi. Tegishli SO2 konsentratsiyasi bo'lgan muhitda kumush bilan qoplangan teginish juftligi-bo'lgan aviatsiya vilkasidan foydalanish mos emas. Issiq chaqnash joylarida mog'or ham muhim muammo hisoblanadi.
16: Tugatish usuli
Tugatish usuli aviatsiya vilkasining sensorli juftligi va sim yoki kabel o'rtasidagi ulanish usulini anglatadi. Tugatish usullarini oqilona tanlash va tugatish texnologiyasidan to'g'ri foydalanish ham aviatsiya vilkalaridan foydalanish va tanlashning muhim jihati hisoblanadi.
17: Lehimlash
Lehimlash - lehimlashning eng keng tarqalgan turi. Lehimlash aloqasi uchun eng muhimi, metallning uzluksizligi lehim materiali va payvandlanadigan sirt o'rtasida hosil bo'lishi kerak. Shuning uchun, aviatsiya vilkalari uchun lehimlilik muhim ahamiyatga ega. Aviatsiya vilkalarining lehimli uchlarida eng keng tarqalgan qoplamalar qalay qotishmalari, kumush va oltindir. Reed tipidagi teginishda umumiy payvandlash uchlari uchun lehim paychalarining turi, teshilgan tishli turi va tishli tishli turi mavjud: igna teshigi tipidagi teginishda umumiy payvandlash uchlari uchun burg'ulash yoyi tishli turi mavjud.
18: qiyshiq
Crimp - bu tartibga solish chegaralarida metallni siqish va almashtirish va simlarni sensorli juftlikka ulash usuli. Yaxshi burmali ulanish metallning o'zaro termoyadroviy oqimini keltirib chiqarishi mumkin, shuning uchun sim va sensorli juftlik materiali nosimmetrik tarzda deformatsiyalanadi. Ushbu turdagi ulanish sovuq payvandlash ulanishiga o'xshaydi, bu esa mexanik kuch va elektr uzluksizligini oshirishi mumkin. U yanada og'ir ekologik sharoitlarga bardosh bera oladi. Odatda, to'g'ri burmali ulanish lehimlashdan ko'ra yaxshiroqdir, deb ishoniladi, ayniqsa yuqori oqim ilovalarida. Siqishdan foydalaning. Siqish paytida maxsus siqish pensesi yoki faol yoki yarim{0}}faol siqish mashinasidan foydalanish kerak. Sensorli juftlikning simli barrelini simning kesimiga ko'ra to'g'ri tanlash kerak. Shuni ta'kidlash kerakki, jingalak aloqasi doimiy aloqa bo'lib, faqat bir marta ishlatilishi mumkin.
19: o'rash
O'rash - bu simni to'g'ridan-to'g'ri burchakli sensorli o'rash ustuniga o'rash. O'rash vaqtida simlar boshqariladigan kuchlanish sharoitida o'raladi, havo o'tkazmaydigan teginish hosil qilish uchun sensorli qismning o'rash ustunining burchaklariga bosiladi va o'rnatiladi. Simni o'rash uchun bir nechta talablar mavjud: sim diametrining nominal qiymati {0}},25mm1.0mm oralig'ida bo'lishi kerak; sim diametri 0.5 mm dan katta bo'lmaganda, o'tkazgich materialining uzayishi 15 foizdan kam emas; sim diametri 0,5 mm dan katta bo'lsa, o'tkazgich Materialning cho'zilishi 20 foizdan kam emas. O'rash asboblariga o'rash qurollari va qattiq o'rash mashinalari kiradi.
20: Teshilish doimiy
Puncture connection, also known as insulation displacement connection, is a novel terminal technology created by the United States in the 1960s. It has the characteristics of high reliability, low cost, and convenient use. It has been widely used in various printed board electrical connectors. It is suitable for the connection of ribbon cables. When connecting, it is not necessary to strip off the insulation layer of the cable, rely on the tip of the "U"-shaped touch reed of the aviation plug to pierce the insulation layer, so that the conductor of the cable slides into the groove of the touch reed and is clamped, so that the A tight electrical connection is formed between the cable conductor and the aviation plug reed. It only requires simple tools, but it is necessary to use cables with regular wire gauges.
21: Vintli ulanish
Vintli ulanish - vintli terminallar yordamida ulanish usuli. Bog'lovchi simlarning maksimal va minimal kesmalariga-va turli spetsifikatsiyadagi vintlar bilan ruxsat etilgan maksimal tortish momentiga e'tibor bering.
