進入公司商鋪 江蘇春晨電纜有限公司專業(yè)生產(chǎn)EV-S90U充電樁電纜，
熱塑性彈性體絕緣聚氨酯護套電動汽車傳導充電系統(tǒng)用電纜，
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.
并股軟繩直徑測量方法現(xiàn)狀分析 三條直徑相同的線芯兩兩相切外，且分別與外被層內(nèi)切，并股軟綿占據(jù)線芯與護套間的空間，形成曲邊扇形。顯然，在電纜結(jié)構設計中此曲邊扇形的面積不難計算，而如何保證并股軟綿在使用狀態(tài)下呈設計要求的截面是個大問題。并股軟綿由聚丙烯吹膜撕裂所成的網(wǎng)狀纖維多股絞合而成，其外觀特征蓬松柔軟，橫截面形狀不規(guī)則，不同點的橫截面大小不*。針對并股軟繩的這些特征和如何定義其“直徑”，又如何來測量呢？ 對此，現(xiàn)行行業(yè)采購規(guī)范無規(guī)定，并股軟繩生產(chǎn)廠及電纜廠也都沒有對其“直徑”給出明確的定義。對其“直徑”的測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）并股軟繩處于自然狀態(tài)下，用游標卡尺輕卡讀數(shù)，作為其“直徑”；EV-S90U充電樁電纜
(1) and a soft rope in the natural state, with a vernier caliper light card reading, as its "diameter";
（2）對并股軟繩施加軸向張力后，用游標卡尺輕卡讀數(shù)；
(2) applied axial tension on the rope and soft, with a vernier caliper card reading light;
（3）沿并股繩外層聚丙烯繩的旋向擰緊，用游標卡尺輕卡讀數(shù)；
(3) tighten the screw thread of the polypropylene rope along the outer strand of the rope;
（4）測量某長度重量，按生產(chǎn)廠提供的單位長度重量來推算其“直徑”。 方法1顯然不妥。
(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略有改進，但不能保證其橫截面呈圓形，輕卡的概念無法掌握，因此對其“直徑”無法控制。
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沿并股軟繩外層聚丙烯繩的旋向擰緊，其外觀呈明顯的麻花狀，各點高低起伏差異較大，無法確定哪里能代表其“直徑”。出現(xiàn)這種現(xiàn)象是由于并股軟綿相鄰兩層的旋向相反，沿外層擰緊，相鄰的內(nèi)層就會被旅松，自然會出現(xiàn)外層起包、凹陷的現(xiàn)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在材料密度不變及開網(wǎng)情況相同的條件下，用此方法計算“直徑”相對準確，但由于各廠家并股繩材料配方不盡相同，即添加劑的比例不同，其密度在一個較大的范圍內(nèi)變化，另開網(wǎng)情況不同，并股繩軟硬有一定差異，且其“直徑”究竟是什么概念不清，因此，生產(chǎn)廠家提供的材料標準中規(guī)定，以單位長度重量來確定并股軟繩的直徑的方法的允許偏差為±25％。而我們所需的并股軟綿的“直徑”每種規(guī)格相差2mm，這樣的公差是無法區(qū)分幾種相鄰規(guī)格的。另方面，若能消除以上各種影響因素，這種方法也很難用于并股軟繩生產(chǎn)中的“直徑”控制，因很難設想在生產(chǎn)過程中頻繁地取其中間的一段來稱其重量；在使用中檢測，一是較麻煩，二是浪費太大，且無法對其“直徑’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.
新的測量方法的提出 基于以上四種方法在實際使用中都不切實可行，因此要控制并股軟繩的“直徑”，解決三芯交聯(lián)電纜不圓整的問題，必須走新的路子，采用新的并股軟綿直徑測量方法。 并股軟繩使用多年，其“直徑”測量問題一直沒有解決，主要是因蓬松柔軟、橫截面形狀不規(guī)則；常規(guī)使用的直徑測量工具是直尺、游標卡尺等；常規(guī)的測量方法是直接在測量工具上讀數(shù)，三者無法有效地結(jié)合起來。 并股軟繩在交聯(lián)電纜的橫截面中呈曲邊扇形，是受到周圍物體擠壓的結(jié)果。這種擠壓力的大小與并股軟綿自身的“直徑”決定了其使用狀態(tài)下呈曲邊扇形的橫截面的面積大小。在正常的條件下擠壓力為常量。若使用狀態(tài)相同，并股繩“直徑”合適，其橫截面的形狀和面積就可達到理想狀態(tài)，即實現(xiàn)電纜填充圓整的目的。 并股軟繩的“直徑”不能直接測量，是否可設計一個模擬并股軟繩使用狀態(tài)的測量器具，通過某種轉(zhuǎn)換從而間接確定其“直徑”呢？由此產(chǎn)生如下方法：制做一個橫截面呈凹形的多屬楷體，上置一塊與矩形槽兩豎邊始終垂直且可上下移動的壓板，壓板上施加一確定的力P，在壓板下沿槽向放置并股軟繩，槽的豎邊有刻度標記，這樣可根據(jù)該狀態(tài)下并股繩所呈的矩形截面積計算其呈圓形時的直徑。但這種方法的缺點一是工具制作較麻煩，更主要的是并股軟繩的直徑規(guī)格范圍大，由12～30mm。而測量器具主體上的矩形槽一旦確定就不會改變，這樣，制作的測量工具若適合測大
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
