进入公司商铺 江苏春晨电缆有限公司专业生产EV-S90U充电桩电缆，
热塑性弹性体绝缘聚氨酯护套电动汽车传导充电系统用电缆，

XLPE power cable is not round, often due to measurement error of diameter cable filler fiber and polypropylene mesh soft rope caused by. Because the material is fluffy, soft and has no fixed cross section shape, the conventional diameter measurement method can not be adopted. The current industry and non soft rope diameter measuring method is feasible, and the material specifications confusion, can not meet the use requirements. The three core XLPE cable is the leading product of our factory, and its appearance quality directly affects the product and the enterprise image, and the economic benefit. Therefore, it is imperative to solve the problem of measuring diameter and soft rope. Through long-term practice, explore, summarize, and put forward a new method of measuring the diameter of soft rope.

并股软绳直径测量方法现状分析 三条直径相同的线芯两两相切外，且分别与外被层内切，并股软绵占据线芯与护套间的空间，形成曲边扇形。显然，在电缆结构设计中此曲边扇形的面积不难计算，而如何保证并股软绵在使用状态下呈设计要求的截面是个大问题。并股软绵由聚丙烯吹膜撕裂所成的网状纤维多股绞合而成，其外观特征蓬松柔软，横截面形状不规则，不同点的横截面大小不*。针对并股软绳的这些特征和如何定义其“直径”，又如何来测量呢？ 对此，现行行业采购规范无规定，并股软绳生产厂及电缆厂也都没有对其“直径”给出明确的定义。对其“直径”的测量一般采用如下方法:

Analysis and measurement of the diameter of a soft rope three lines of the same diameter core 22 tangent, and the outer layer cut, and soft cotton core and sheath occupied space, forming a curved fan. Obviously, in the structural design of the cable side fan-shaped area is not difficult to calculate, and how to guarantee and soft cotton under the condition of use a section of the design requirements is a big problem. Soft cotton and polypropylene film by tearing into the reticular fiber strand to the appearance of soft, cross section shape is irregular, the size of the cross section of different points is not consistent. According to these characteristics and soft rope and how to define the "diameter", and how to measure it? In this regard, the current industry procurement norms without rules, and soft rope and cable factory production plant also has no definition of the "diameter" clear. The measurement of the "diameter" usually adopts the following methods:

（1）并股软绳处于自然状态下，用游标卡尺轻卡读数，作为其“直径”；EV-S90U充电桩电缆

(1) and a soft rope in the natural state, with a vernier caliper light card reading, as its "diameter";

（2）对并股软绳施加轴向张力后，用游标卡尺轻卡读数；

(2) applied axial tension on the rope and soft, with a vernier caliper card reading light;

（3）沿并股绳外层聚丙烯绳的旋向拧紧，用游标卡尺轻卡读数；

(3) tighten the screw thread of the polypropylene rope along the outer strand of the rope;

（4）测量某长度重量，按生产厂提供的单位长度重量来推算其“直径”。 方法1显然不妥。

(4) to measure the weight of a certain length and calculate the diameter of the unit according to the weight of the unit". Method 1 apparently inappropriate.

方法2比方法1略有改进，但不能保证其横截面呈圆形，轻卡的概念无法掌握，因此对其“直径”无法控制。

Method 2 than the method of a slight improvement, but can not guarantee that the cross section of the round, the concept of light card can not be mastered, so its diameter can not be controlled 1.

方法3沿并股软绳外层聚丙烯绳的旋向拧紧，其外观呈明显的麻花状，各点高低起伏差异较大，无法确定哪里能代表其“直径”。出现这种现象是由于并股软绵相邻两层的旋向相反，沿外层拧紧，相邻的内层就会被旅松，自然会出现外层起包、凹陷的现象。

Methods 3 along the soft rope and outer polypropylene rope turning screw, its appearance is obvious twist, the ups and downs of differences, not sure where to represent its diameter". This phenomenon is due to soft cotton and two adjacent layers is opposite to the rotation direction, along the outer screw lining will be adjacent to the journey is loose, naturally there will be outer bag, depression.

方法4在材料密度不变及开网情况相同的条件下，用此方法计算“直径”相对准确，但由于各厂家并股绳材料配方不尽相同，即添加剂的比例不同，其密度在一个较大的范围内变化，另开网情况不同，并股绳软硬有一定差异，且其“直径”究竟是什么概念不清，因此，生产厂家提供的材料标准中规定，以单位长度重量来确定并股软绳的直径的方法的允许偏差为±25％。而我们所需的并股软绵的“直径”每种规格相差2mm，这样的公差是无法区分几种相邻规格的。另方面，若能消除以上各种影响因素，这种方法也很难用于并股软绳生产中的“直径”控制，因很难设想在生产过程中频繁地取其中间的一段来称其重量；在使用中检测，一是较麻烦，二是浪费太大，且无法对其“直径’哇面控制。

Methods 4 in material density is constant and the open network under the same conditions, the calculation method of "diameter" relatively accurate, but because the manufacturers and the rope materials are not the same, the additive proportion is different, its density changes in a larger range, open network is different, and soft rope there are some differences, and the "diameter" is what the concept is not clear, therefore, the material standard provisions provided by the manufacturer, the weight per unit length and the diameter of the method to determine the allowable deviation of the soft rope is + 25%. But what we need and soft cotton diameter for each specification is 2mm and this tolerance is unable to distinguish between several adjacent specifications. On the other hand, if we can eliminate all the affecting factors, this method is also very difficult for the production of soft rope and "diameter" control, because it is hard to imagine a fan in the middle of the production process of medium frequency to weigh them; detection in use, one is more trouble, the two is a waste too much and, unable to control "wow" diameter.

新的测量方法的提出 基于以上四种方法在实际使用中都不切实可行，因此要控制并股软绳的“直径”，解决三芯交联电缆不圆整的问题，必须走新的路子，采用新的并股软绵直径测量方法。 并股软绳使用多年，其“直径”测量问题一直没有解决，主要是因蓬松柔软、横截面形状不规则；常规使用的直径测量工具是直尺、游标卡尺等；常规的测量方法是直接在测量工具上读数，三者无法有效地结合起来。 并股软绳在交联电缆的横截面中呈曲边扇形，是受到周围物体挤压的结果。这种挤压力的大小与并股软绵自身的“直径”决定了其使用状态下呈曲边扇形的横截面的面积大小。在正常的条件下挤压力为常量。若使用状态相同，并股绳“直径”合适，其横截面的形状和面积就可达到理想状态，即实现电缆填充圆整的目的。 并股软绳的“直径”不能直接测量，是否可设计一个模拟并股软绳使用状态的测量器具，通过某种转换从而间接确定其“直径”呢？由此产生如下方法：制做一个横截面呈凹形的多属楷体，上置一块与矩形槽两竖边始终垂直且可上下移动的压板，压板上施加一确定的力P，在压板下沿槽向放置并股软绳，槽的竖边有刻度标记，这样可根据该状态下并股绳所呈的矩形截面积计算其呈圆形时的直径。但这种方法的缺点一是工具制作较麻烦，更主要的是并股软绳的直径规格范围大，由12～30mm。而测量器具主体上的矩形槽一旦确定就不会改变，这样，制作的测量工具若适合测大

A new measuring method is proposed based on the above four methods in actual use are not feasible, so we should control and soft rope diameter, three core XLPE cable is not round, must take a new path, and the soft cotton new diameter measuring method. And a soft rope used for many years, the "diameter" measurement problem has not been resolved, mainly because of fluffy and cross section of irregular shape; diameter measurement tools commonly used is a ruler, vernier caliper; conventional measurement method is the direct readings in measurement instruments, the three can not be effectively combined. And the cross section of soft rope in XLPE cables in a curved sector, are the result of object extrusion. The extrusion pressure and the size of soft cotton and its "diameter" determines the state a curved cross section of the sector size. Under normal conditions the pressure is constant. If the use of the same state, and the strand "diameter" appropriate, the shape and area of the cross section can achieve the desired state, that is, to achieve the purpose of filling the entire cable. And a soft rope diameter measuring instrument can not be measured directly, whether the design of a simulation and soft rope state, through a conversion and thus indirectly determine the "diameter"? The resulting method is as follows: making a cross section of the concave plate is moving on a regular, rectangular slot block and two vertical edges always vertical and up and down, applying a certain force P plate, under the pressing plate along the groove position and a soft rope, a scale mark groove of the vertical side so, according to the state and the rope in the rectangular cross-sectional area to calculate the circular diameter at the time. But the disadvantage of this method is a tool to make more trouble, more important is the soft rope diameter and size range, from 12 to 30mm. The rectangular groove on the main body of the measuring instrument can not be changed once it is determined