压力阀试验系统的设计与应用研究(二)

本文介绍了压力阀试验液压系统对减压阀和顺序阀进行测试时的操作方法。

高温脉冲压力试验系统

介绍了一种对汽车散热器及蒸发器进行可靠性检测试验的自动化系统。该系统采用计算机控制．实现了对压力、温度、流量、液位等参数的自动测量及控制。该系统填补了我国汽车散热器及蒸发器高温脉冲压力实验的空白。

PC-Based产品在压力气密试验系统中的应用

本文主要介绍在对产品的压力气密试验中,如何精确控制各分段压力,并高速采集现场大量的数据进行存储、分析。本计算机控制系统全部采用研华公司PC-Based的工业控制产品,自投入运行以来,性能稳定,运行良好,极大地提高了现场的生产效率。该项目获得了国家先进技术奖。

现场配管的压力试验

目前液压系统安装现场基本上不进行现场配管的压力试验,给设备使用带来了安全隐患。特别是在目前液压设备高压趋向下,必须对设备现场配管的压力试验提出要求。

建筑给水和消防给水中阀门压力选择探讨

通过比较现行设计规范和验收规范中对建筑给水和消防给水系统的试压要求,以及分析系统中阀门产品须进行的强度试验压力、密闭试验压力的规定和阀门工作压力的选择,提出建筑给水和消防给水系统中管道阀门工作压力应满足系统工作压力和试验压力的要求。

远洋金枪鱼围网船渔捞设备液压系统中的法兰的安装应用

通过对远洋金枪鱼围网船渔捞设备高压法兰的选型、安装、试验,保证渔捞设备在远洋作业时,渔捞液压系统工作的可靠性及实用性,确保渔船高效、稳定的渔捞作业。

Interface contact profiles of a novel locking plate and its effect on fracture healing in goat

Objective： To evaluate the interface characteristics of the new-designed locking plate （LP） and limited contact-dynamic compression plate （LC-DCP） and compare the fracture healing between LP and LC-DCP in a goat tibia fracture model. Methods： Eight-hole LP and LC-DCP were applied to fix fresh goat tibiae in a reproducible manner. The average pressure, force and interface contact area were calculated using Fuji prescale pressure sensitive film interposed among the plate and the bone and image analysis system, Eighthole LP and LC-DCP were applied to each tibia in a goat tibia fracture model. The fracture healing was evaluated by X-ray photography at postoperative 8 weeks. The goats were sacrificed at postoperative 12 weeks. Three-point bending test was conducted in the tibiae. Results： The interface contact of LP system was smaller than that ofLC-DCP （P〈0.05）, while interface contact force of LP system was higher than that of LC-DCP （P〈0.05）. Radiographs revealed that the fracture line disappeared in the LP group, while the fracture line was visible in DCP group at postoperative 8 weeks. At postoperative 12 weeks, the bending strength and bending load of fractured tibia were higher in LP group than in DCP group, respectively.