High-voltage power supply for medical plastic package liquid leakage detection and detection method

Abstract

The invention relates to a high-voltage power supply for medical plastic package liquid leakage detection and a detection method. The detection power supply comprises a sine-wave signal generating circuit, a power amplification circuit, a high-frequency transformer, a high-voltage discharge circuit and a liquid leakage alarm detecting circuit, and is characterized in that an external DC voltage signal is accessed through an input end of the sine-wave signal generating circuit, a plastic package to be detected is placed in a high-voltage discharge gap of the high-voltage discharge circuit, and the liquid leakage alarm detecting circuit externally outputs a liquid leakage alarm signal. Whether the plastic package leaks or not is detected by using a high-voltage discharge method, the high-voltage discharge circuit stays at different degrees of short circuit when the plastic package stays at different degrees of liquid leakage, high-voltage output has characteristics of a voltage source, high-voltage output voltage is relatively constant, and high-voltage output current changes obviously, so that the liquid leakage alarm detecting circuit is facilitated to give out a liquid leakage alarm signal accurately, and thus the reliability of liquid leakage detection can be improved.

Description

technical field [0001] The invention relates to the technical field of intelligent electrical detection, in particular to a high-voltage power supply for detecting liquid leakage in medical plastic packaging and a detection method thereof. Background technique [0002] Medical infusion products such as glucose solution, sodium chloride solution, mannitol solution, etc. are increasingly stored in plastic bottles or bags. During the manufacture, transportation or storage of these infusion products, the plastic outer packaging may be damaged, resulting in leakage of the drug solution, which further leads to damage to the quality of the drug and the life safety of the drug user. Therefore, it is very necessary to carry out on-line detection or offline detection on the production line for infusion products. [0003] In the prior art, the leakage detection method of high-voltage discharge is used to detect the sealing performance of the plastic outer packaging of infusion product...

AI Technical Summary

Problems solved by technology

The disadvantages of this power control method are: (1) when the high voltage is short-circuited to different degrees when the plastic container is in different degrees of liquid leakage, because the high voltage output has the characteristics of a current source, the high voltage decreases and the high voltage current does not change significantly , It is not conducive to the leakage alarm detection circuit to send a leakage alarm signal, thereby affecting the reliability of leakage detection; (2) The high-voltage output voltage waveform is not a sine wave, which brings difficulties to the signal processing of the leakage alarm detection circuit

In addition to the above-mentioned patented technology of high-voltage discharge power supply for plastic containers, in other existing patented technologies, no detailed description of the high-voltage power supply for detecting leakage of plastic outer packaging of infusion products has been retrieved

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