原油等熵压缩温升测定及研究  

Determination and Study of Crude Isoentropic Compression Temperature Rise

作　　者：许振民[1] 辛玉兰 赖焕阳 楼群华 

机构地区：[1]中国石油天然气总公司华东输油管理局

出　　处：《油气储运》1995年第2期14-17,共4页Oil & Gas Storage and Transportation

摘　　要：采用反平衡法测试泵的效率,具有测试参数少(不需要测定泵流量)、易于实现等优点,但是原油等熵压缩温升参数及其测试方法需要深入研究。实测液体等熵压缩温升要在绝热、压力稳定的条件下进行,并取升压测得的温升Δt_p和降压测得的温降Δt_p′的算术平均值,作为等熵压缩温升。从对原油实测的等熵压缩温升结果来看,原油的等熵压缩温升与原油性质、被压缩原油的温度、压力、密度有关,其中与原油密度的关系较为明显。介绍了测试这一参数的测定原理,设计、创造一个热力条件近似绝热,泵压易调节且运行稳定的测试工艺流程,按测试步骤规定的要求直接测取原油被压缩前后的温度。应用实测的原油等熵压缩温升对输油泵进行反平衡法测算泵效率,与同时进行正平衡法测算结果比较,其相对误差仅为2％,完全符合ISO标准中B级测试(≤2.8％)的要求。Anti-balance method is adopted in efficiency measurement, which has such advantages as fewer parameters are necessary for the measurement (Pump flowrate is unnessary to measure. ) , and easy to obtain. Yet, the parameters of CICTR and method of the measurement should be studied further. Measurement of CTCTR should be performed under the condition of thermal insulation and steady pressure, with the average mathematic value, as CICTR, of temperature rise △tp measured while the temperature rises and the temperature drop, △tp measured while the temperature drops. The measured result of CICTR shows that CICTR is related to crude property, the temperature of the compressed crude as well as pressure and density, among which density is considered to be the most related. The principle for measuring the parameters is described in the paper. Measuring process should be designed and created, the thermal condition of which is thermal insulation, pump pressure is easy to regulate and the pump operates under a steady preassure. The temperature of crude after/ before being compressed can be directly measured following the stipulations in the measuring procedures. Pump efficiency should be measured and calculated with the anti-balance method of measured CICTR to an oil pump. Compared with the balance method result at the same time, the relative fault is only 2% which is fully in line with the requirement for Class B measurement of ISO.

关 键 词：输油泵 温度 压力 原油 输油设备 

分 类 号：TE933.3[石油与天然气工程—石油机械设备]