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常見的氣密性泄漏檢測方法

發布時間:2017-11-20 11:40:16   發布人:http://www.aiqin1.cn
壓力表疲勞試驗臺的密封性是指在給確定被測密封件加一定壓力介質的情況下,允許介質泄漏的極限量。
The tightness of the fatigue test stand for pressure gauges refers to the allowable limit of the leakage of the medium in the case of adding a certain pressure medium to the sealed part to be measured.
氣密性檢測可根據測試手段不同分為兩大類:一類是通過目測的氣泡量來判斷,即在向工件腔內充一定壓力的氣體時,將其浸入水中或涂肥皂泡,根據目測肥皂泡或水中的氣泡來判斷工件是否有漏及泄漏的成都。
Air tightness test according to different testing methods are divided into two categories: one is judged by the amount of air bubbles in the visual, gas to the workpiece cavity pressure, be immersed in water or lather, to judge whether the workpiece leakage and leakage according to visual bubbles and water bubbles in Chengdu.
目前這種方法在冰箱、空調的密封管道以及箱體檢漏時仍普遍采用。但這種方法測試效率低,受主觀因素影響較大,同時用這種方法測試后,還必須對工件進行干燥和防銹處理。
At present, this method is still widely used in refrigerators, air conditioning sealing pipes and box leak detection. But this method has low test efficiency and is affected by subjective factors. At the same time, the drying and antirust treatment of the workpiece must be done by this method.
另一類是通過傳感器的信號輸出來判斷,即向工作腔內充一定壓力的氣體,通過壓力傳感器的信號輸出來判斷工件是否有漏,并計算出其泄漏率,即單位時間內壓力傳感器輸出的變化值。
The other is through the sensor signal output judgment, that is to the work cavity filled with a certain pressure of gas, through the pressure sensor signal output to determine whether the leakage of the workpiece, and calculate its leakage rate, that is, the unit pressure sensor output changes in the unit time.
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