摘要
双箱式周浸腐蚀试验箱受设备设计限制,在试验过程中存在浪费溶液的现象,且试验过程中需要经常向溶液箱中补加溶液才能保证设备正常运作.该文优化改造了双箱式周浸腐蚀试验箱的排水管路,即在排水管路中增加支路补充输送残留溶液,并添加管路液位传感器及联动泵送装置,使溶液在两箱之间循环,可避免溶液浪费,节约人力物力,保障试验顺利进行,为试验装置的开发提供参考意见.
Abstract
[Objective]During the test of a double-chamber alternate immersion test equipment,the solution could not be completely sent back to the solution chamber following the immersion test.After the predetermined pumping time,substantial solution remained in the test chamber,resulting in the wastage of the solution.As the test progressed,the solution continually got wasted.Thus,timely replenishment of the solution chamber was necessary;otherwise,it would trigger an alarm or even stop the machine,waste massive manpower and material resources,and affect the scientific and effective test results.There is great room to improve the utilization rate of the solution.[Methods]To address this issue,this study propose to optimize the drainage pipeline of the double-chamber alternate immersion test equipment and add auxiliary devices,thereby circulating the solution between the two chambers to avoid solution wastage.A branch was added to the original pipeline to transport the residual solution to the solution chamber.To do so,the original drainage pipeline was cut off,and a series of auxiliary devices were added,including a tee joint,valve,liquid level sensor,and linkage pumping device.After the immersion test,the residual solution in the test chamber will flow to the newly added branch pipeline.As the liquid level sensor sensed the solution flowing through,the linkage pumping device automatically started to pump the residual solution to the solution chamber.According to the drainage characteristics and site needs of the double-chamber alternate immersion test equipment,an electrode rod-type liquid level sensor was selected to measure the liquid level,and an electric self-priming diaphragm pump with an acid-and alkali-resistant brushless motor was selected as the pumping device.The pump head was composed of nylon,acid-and alkali-resistant material suitable for pumping salt solutions.Nylon has a high temperature resistance of 70℃ and meets the temperature requirement of the standard for alternate immersion tests.The pump had a large flow rate of 40 L/min,ensuring timely salt solution pumping.The pumping device cooperated with the liquid level controller to pump the residual solution in the double-chamber alternate immersion test equipment.[Results]After several tests,it was proved that after the pumping device of the double-chamber alternate immersion test equipment stopped working,the newly added liquid level sensor and pumping device continued to pump 20～30 L solution into the solution chamber in automatic mode,and only minuscule solution remained in the test chamber owing to its structure.The test results were highly satisfactory.[Conclusions]The improved method in this study achieved the expected goal.The experimental results show that the addition of a pipeline liquid level sensor and a linkage pumping device can effectively avoid wasting enormous solutions,thereby avoiding equipment failure and alarm shutdown during the test.Equipment manufacturers can learn from this upgrading idea and add corresponding liquid level sensors and linkage pumping devices during the production design of double-chamber alternate immersion test equipment.
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