Leak detecting device for detecting a leak in a container

Details Leak detecting device for detecting a leak in a container Leak detecting device for detecting a leak in a container

1999-02-25

2000-04-18

Williams, Hezron

Measuring and testing

With fluid pressure

Leakage

73 41, 73 452, G01M 332, G01M 304, G01B 1100

Patent

active

060501340

ABSTRACT:
A leak detection system determines whether a container has a leak or an aperture by attempting to draw a vacuum in the container and determining whether a vacuum has been created in the container. If a vacuum can be created in a container, this indicates that the container has a leak. Conversely if a vacuum cannot be created in the container, this indicates that the container does not have a leak.
The leak detection system preferably includes a conveyor system for moving a container and a sensor for sensing the pressure in the interior of the container through an opening in the top of the container. While the sensor is sensing the pressure in the interior of the container, a vacuum pump pulls air from the region around the exterior of the container. If the container has an aperture, a vacuum will be created in the container and will be noted by the sensor. Conversely, if the container does not have an aperture, a vacuum will not be created within the container and the sensor will determine this by noting that the pressure of the container is above a predetermined pressure limit. This sensor determines that the container has an aperture by noting that the vacuum in the container is greater in magnitude than a predetermined pressure limit. The leak detection system of this invention may further include a reject assembly for rejecting a container that is detected by the sensor to have an aperture and a controller for controlling the reject assembly in response to signals from the sensor.

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