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什么是VCR接头?各种型号规格VCR接头详解

来源:本站 时间:2019-04-17 15:34:11 浏览次数: 4270

[导读]: VCR接头是面密封接头(Face SealFitting)的一种,密封元件采用金属垫片。通过内、外螺纹互锁来压迫金属垫片,使垫片产生一定的变形,从而达到密封的效果。还有一种比较典型的面密封接头是VCO接头,其工作原理同VCR一样,只不过密封元件为O型圈它的材质通常为氟橡胶或氟塑料,目前用得很少。

VCR是英文Vacuum Coupling Radius Seal前三个英文单词的缩写,中文意思是真空连接径向密封,它是美国Swagelok公司的金属面密封接头(Metal Gasket Face Seal Fitting)的注册商标。VCR接头最早应用于宇航工业,目前在半导体光电制造行业也得到了广泛使用。可能是因为Swagelok公司的名气和影响力太大,VCR成了金属面密封接头的代名词(其实不同品牌的金属面密封接头的名称是不一样的)。

VCR is the abbreviation of the first three English words of Vacuum Coupling Radius Seal, which means radial Seal of Vacuum connection in Chinese. It is the registered trademark of Metal Gasket Face Seal Fitting of Swagelok company in the United States. VCR connector was first used in aerospace industry, and now it is widely used in semiconductor photoelectric manufacturing industry. Probably because of the Swagelok company's fame and influence is too big, VCR has become a synonymous with the metal face seal joint (in fact, different brands of metal face seal joint name is not the same).

VCR接头

VCR接头的工作原理:

VCR接头是面密封接头(Face SealFitting)的一种,密封元件采用金属垫片。通过内、外螺纹互锁来压迫金属垫片,使垫片产生一定的变形,从而达到密封的效果。还有一种比较典型的面密封接头是VCO接头,其工作原理同VCR一样,只不过密封元件为O型圈它的材质通常为氟橡胶或氟塑料,目前用得很少。

Working principle of VCR connector:

The VCR joint is a kind of Face SealFitting with metal gasket. Through interlocking of internal and external threads, the metal gasket is pressed to produce certain deformation so as to achieve the sealing effect. There is a more typical face seal joint is the VCO joint, and its working principle is the same as the VCR, except that the sealing element is o-ring and its material is usually fluorine rubber or fluorine plastic, which is rarely used at present.

VCR接头

VCR接头常用型式:

(1)按作用不同可分为:直通接头、弯头、三通、大小头、四通、管帽、堵头、转换接头等。

(2)按接头的连接方式可分为:①都是VCR连接,都是本体,需要同内螺纹螺母、接头、垫片配合使用;②一头是VCR连接,一头是螺纹连接;③一头是VCR连接,一头是卡套连接;④其它。

(3)LOK接头是一个整体,包括本体、螺母、前卡套和后卡套。例如订购了一个UnionElbow(LOK弯头),就可以直接使用了,不需要另外订购螺母和前、后卡套(除非作为备用部件)。

(4)VCR接头的金属垫片可分为无爪型(NonretainedGasket)和带爪型(RetainedGasket)。

(5)VCR接头的接头(Gland)种类很多,按长短可分为长型(Long Tube)、短型(Short Tube);按焊接形式可分为对焊(Butt Weld)、肩焊(ShouldWeld)、承插焊(Socket Weld);按与其配套使用的螺母可分为公型(Male)、母型(Female)。

(6)实际上TUBE管有英制(如1/8”、1/4”、3/8”、3/4、”1”)和公制(如3、8、15、20、25mm)两种(都是指管外径),不过常用的是英制。因此同TUBE配套的VCR接头也有英制和公制之分。

(7)对于一头是螺纹连接的VCR接头,要区分管螺纹的类型,比较常见的有两种:NPT(60°圆锥管螺纹,美标产品常用)和PT(55°圆锥管螺纹,国内常用,日本也用得较多)。

Common types of VCR connector:

(1) according to the role of different can be divided into: straight joint, elbow, tee, size head, four-way, pipe cap, plug, conversion joint.

(2) according to the connection of the joint can be divided into: (2) one end is VCR connection, one end is threaded connection; (3) one end is VCR connection, one end is jacket connection; (4) the other.

(3) the LOK connector is an integral whole, including the body, nut, front clamp sleeve and rear clamp sleeve. For example, ordering a UnionElbow (LOK elbow) allows you to use it without the need to order additional nuts and front and back clips (unless as a spare).

(4) the metal gasket of VCR joints can be divided into non-retainedgasket and RetainedGasket.

(5) Gland types of VCR joints are numerous and can be classified into Long Tube and Short Tube according to their length. Welding can be divided into Butt Weld, ShouldWeld and Socket Weld. It can be divided into Male type and Female type according to the nuts matched with them.

(6) as a matter of fact, there are two kinds of TUBE in English system (1/8 ", 1/4 ", 3/8 ", 3/4 ", 1 ") and metric system (3/8 ", 15 ", 20 ", 25mm), but usually in English system. Therefore, the TUBE's VCR connector is also available in British and metric systems.

(7) is threaded connections for a VCR, joint area in charge of the thread type, there are two common: the NPT (60 ° taper pipe threads, commonly used products) and PT (55 ° taper pipe threads, domestic commonly used, also use morer Japan).

VCR接头

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