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Practice and analysis of life measuring device for motor valve

机译：电机阀寿命测量装置的实践与分析

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Motor valve leakage is not easy to detect during using, so it must carry out quality inspection before assembly into gas meter. The quality appraisement of valve mainly relies on switch times before leakage, and pressure difference measurement is better method for leakage judgment. The static pressure leak detection method, reference gas chamber and control program of solenoid valve are key technologies in pressure difference measurement and life measurement. The new type device is designed with hardware and software, such as gas path and pipes, sensor, the solenoid valves of dynamic structure static switching unit, controller, gas pressure regulation system, automatic detection and valve switching process control program etc. Based on support of hardware and software, dynamic flow pipe is separated to static segments which are reference gas chamber and measuring air chambers; and the signal of chambers' pressure difference and switch times without leakage are the output result. Switching frequency ratio of solenoid valves to motor valve is 1:5 or 1:10; lower ratio can prolong the service life of solenoid valves. The motor valve is kind of key part in natural gas measurement instrument, because the leakage of motor valve can induce the whole production useless. In producing process, it is difficulty thing for instrument producer to get valve's switch times before leakage for every valve. Therefore, valve leakage tests are usually done by randomly selected units from batch valve wares before use, and leakage state and life are estimated for the whole valves, named spot check instead fully inspection. Nevertheless, leakage test is also a low efficiency work, usually manual work and single test. For the reasons of long period of time to spend and characteristics of consumption test, it is always no test in practice, there are latent safety problems and production quality problems in producing process. In order to complete batch test automatically, a new device for motor valve life measurement is developed here.
机译：在使用过程中，电机阀泄漏不易检测，因此它必须在装配到煤气表之前进行质量检查。阀门的质量评估主要依赖于泄漏前的切换时间，压力差测量是泄漏判断的更好方法。电磁阀的静压泄漏检测方法，参考气体室和控制程序是压力差测量和寿命测量的关键技术。新型设备采用硬件和软件设计，如气体路径和管道，传感器，动态结构静电开关单元，控制器，气压调节系统，自动检测和阀门切换过程控制程序等。基于支持硬件和软件，动态流量管与静态段分开，静态段是参考气体室和测量空气室;并且腔室的信号的压力差和切换时间没有泄漏的是输出结果。电磁阀与电机阀的切换频率比为1：5或1:10;较低的比例可以延长电磁阀的使用寿命。电机阀是天然气测量仪器中的关键部分，因为电机阀的泄漏可以诱导整体生产无用。在生产过程中，仪器制片人难以让阀门的开关时间在每个阀门泄漏之前。因此，阀门泄漏试验通常由使用前从批阀门的随机选择的单元进行完成，并且估计整个阀门的泄漏状态和寿命，则为完全检查。然而，泄漏测试也是低效率的工作，通常是手动工作和单一测试。由于长时间花费的原因和消费测试的特点，因此在实践中总是没有测试，在生产过程中存在潜在的安全问题和生产质量问题。为了自动完成批次测试，此处开发了一种用于电机阀门寿命测量的新装置。

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