Apparatus for testing weeping of plastic fluid container
A technology for liquid containers and detection devices, which is applied in the field of plastic liquid container sealing performance detection devices, can solve problems such as structures and parameters that have not been reported, and achieve the effects of long service life, high detection sensitivity, and high detection efficiency
Inactive Publication Date: 2009-11-18
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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However, its specific structure and parameters have not been reported
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[0018] The content of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0019] Such as figure 1 As shown: the present invention includes a high-voltage variable-frequency power supply 1 , a high-voltage electrode 2 , a high-voltage electrode transmission mechanism 3 , a low-voltage electrode 4 , a current detection unit 5 and a container 6 to be inspected. The high-voltage variable-frequency power supply 1 is used to generate a voltage output of 500 Hz to 30 kHz and 10-45 kV. The high-voltage electrode 2 is made of a metal material, such as stainless steel or copper, and is a point-to-point pole structure or a ring structure, and is fixed on the insulating support 7. The insulating support 7 is connected with the high-voltage electrode transmission mechanism 3, and the high-voltage electrode transmission mechanism 3 can make The high-voltage electrode 2 produces rotary motion or linear motion. The ...
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A liquid leakage detection device for a plastic liquid container, including a high-voltage frequency conversion power supply [1], a high-voltage electrode [2], a high-voltage electrode transmission mechanism [3], a low-voltage electrode [4], a current detection unit [5] and a container to be inspected [6] ]. The high-voltage electrode [2] is made of metal material, and is a point-to-point opposite pole structure or a ring structure, and is fixed on an insulating support [7]. The insulating support [7] is connected with the high-voltage electrode transmission mechanism [3], and the high-voltage electrode transmission mechanism [3] causes the high-voltage electrode [2] to generate rotational motion or linear motion. The low-voltage electrode [4] is a metal plate, and the container to be inspected [6] is placed horizontally on the low-voltage electrode [4]; the high-voltage electrode [2], the low-voltage electrode [4] and the container to be inspected [6] form a discharge circuit, and the current detection unit [5] Detect the current signal of the discharge circuit. The invention can be applied to the on-line detection of the sealing performance of the bottle mouth of the plastic bottled liquid.
Description
technical field [0001] The invention relates to a device for detecting the sealing performance of a plastic liquid container, in particular to a device for detecting liquid leakage by using high-voltage pulse discharge. Background technique [0002] At present, plastic containers are mostly used for packaging liquids in the pharmaceutical and beverage industries, and such liquid containers usually include a bottle body and a bottleneck. Since the sealing performance of the container directly affects the shelf life of the products contained in it, which in turn affects human health and life safety, it is necessary to test its sealing performance. Most enterprises use random sampling for detection, through manual or machine video detection, the detection efficiency is low, the scope is narrow, the reliability is poor, and the effect is not good. [0003] Chinese patent 03157083 is based on the difference of the liquid impedance sensed by the leakage sensor, as the basis for j...
Claims
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IPC IPC(8): G01M3/40
Inventor 严萍崔光华孙鹞鸿赵常伟高迎慧邵建设
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI