| 高压胶管总成是液压系统中的基础元件 |
| 添加时间：2018/3/9 15:10:39 浏览次数： |
| 高压胶管总成是液压系统中的基础元件，它的可靠性对整个液压系统的稳定性和可靠性有着至关重要的影响。高压胶管常见的失效形式有：高压胶管总成扣压处泄漏或拔脱、胶管爆裂、扣压金属管爆裂、高压胶管鼓包、剥皮等。 The high pressure hose assembly is the basic element in the hydraulic system, and its reliability has a crucial influence on the stability and reliability of the whole hydraulic system. High pressure hose common failure forms are: high pressure hose assembly withholding leak or pulling, hose burst, metal tubes, high pressure hose withhold bulge, peeling etc.. (1)由于井下介质清洁度较低，介质裹挟气体较多，一方面极易发生气蚀，气蚀发生时，压力峰值可超过1GPa ;另一方面，高速大流量乳化液裹挟着细小杂质，容易产生拉丝侵蚀。高压胶管内胶层的损坏加速了胶管编制钢丝网的腐蚀，降低了高压胶管的耐压强度。压力波对高压胶管总成及接头组件产生强大的冲击作用，并导致高压胶管总成及接头组件危险断面的断(破)裂。 (1) due to the underground medium cleanliness is low, many media coerced gas, hand cavitation occurs easily, cavitation occurs when the peak pressure of more than 1GPa; on the other hand, high speed and large flow of emulsion carrying small impurities, prone to drawing erosion. The damage of the rubber layer in the high pressure hose accelerates the corrosion of the steel wire mesh, and reduces the pressure strength of the high pressure hose. The pressure wave has a strong impact on the high pressure hose assembly and the joint assembly, and causes the broken (breaking) crack of the dangerous section of the high pressure hose assembly and the joint component. (2)失效管路元件超寿命使用。由于无法检验和准确判断高压胶管和管路元件是否失效或达到使用寿命，现场存在大量超寿命使用的元件 ( 按国外有关规定，高压胶管出厂后2年有效) ，这些高压胶管往往容易在使用过程中失效，导致故障率增加。 (2) ultra life use of the failure pipeline element. Due to the test and accurately determine the high pressure hose and pipe element whether the failure or reach service life, there are so many super life elements (according to the relevant regulations, foreign high-pressure hose factory after 2 years), these high pressure hose is often easy to use in the process of failure, resulting in increased failure rate. |
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