液压支架用不同液压液的混合性能研究  

Research on mixing properties of different hydraulic fluids for hydraulic supports

作　　者：白飞飞 叶雷 李硕林 Bai Feifei;Ye Lei;Li Shuolin(Branch Institute of Mine Material Products,China Coal Research Institute,Beijing 100013,China;State Key Laboratory of High Efficient Mining and Clean Utilization of Coal Resources,Beijing 100013,China)

机构地区：[1]煤炭科学技术研究院有限公司矿用材料分院,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室,北京100013

出　　处：《煤炭与化工》2022年第9期71-74,共4页Coal and Chemical Industry

基　　金：煤科院科技发展(2020CX-I-04)。

摘　　要：为减少不同液压液接触反应造成泵站和液压支架过滤器的故障,需对不同液压液的混合稳定性进行预测。选取了4个符合标准要求的液压液配方,按相同质量比各配稀释液,并将其稀释液进行混合,考察不同比例混合液在室温和70℃下的稳定性、电导率、Zeta电位、表面张力和浊度。实验结果表明,不同混合液静置168 h后,在室温下溶液稳定如初,在70℃下,部分混合液出现絮状物;混合液的电导率5.04~14.03 mS/cm,Zeta电位13.63~67.49 mV,表面张力35.9~42.2 mN/m,浊度1.14~76 NTU;在相同比例混合下,高电导率和低Zeta电位,不利于混合液的热稳定性;表面张力和浊度对稳定性的预测能力相对较弱。In order to reduce the failure of pump station and hydraulic support filter caused by different hydraulic fluid contact reactions, it is necessary to predict the mixed stability of different hydraulic fluids. Four hydraulic fluid formulations that meet the standard requirements were selected, and the diluents were mixed according to the same mass ratio. The stability, conductivity, Zeta potential, surface tension and turbidity of the mixtures with different proportions at room temperature and 70 ℃ were investigated. The experimental results showed that the solutions of different mixtures were stable at room temperature after 168 h of standing, and floccules appeared in some mixtures at 70 ℃. The conductivity of the mixture was 5.04-14.03 m S/cm, Zeta potential was 13.63-67.49 m V, surface tension was 35.9-42.2 m N/m, and turbidity was 1.14-76 NTU;under the same proportion of mixing, high conductivity and low Zeta potential are not conducive to the thermal stability of the mixture;surface tension and turbidity are relatively weak in predicting stability.

关 键 词：液压支架 不同液压液 混合 稳定性 电导率 ZETA电位 

分 类 号：TD35[矿业工程—矿井建设]