Leak and hydraulic test line for compressed gas cylinders and fire-fighting cylinders.
In summary, the operations performed by the testing line are:
On the line, cylinders of dimensions can be tested:
Before the test there is an internal washing station of the cylinder.
The cylinders are brought for testing by a loading line consisting of a programmed belt, roller conveyors with rubber rollers and an inclined loading bed with a pneumatic cylinder alignment pusher.
The testing plant has a compact conformation with a 6-axis loading-unloading manipulator that moves on rail and an automatic machine for dual testing of gas cylinders with 5 stations where the first 3 perform the hydraulic test and the remaining two perform the leakage test.
The system is dual, but the cylinders can also be performed only one of the tests, excluding the other.
Each station of the hydraulic test area has an upper trolley with three mechanisms, one for filling the cylinder, a scale that weighs the cylinder suspended vertically and a mechanism for putting under pressure and testing. In the cycle there can be two weighing operations: empty and full and the two data can be passed to the marking line to calculate and mark the precise volume of the cylinder. The sealing system is with automatic screwing.
The cylinder is picked up at the inlet by the manipulator and loaded in a free station of the 3 present in the hydraulic test. Each station is independent and has its own pressure transducer and manometer. The pressure test takes place at a pressure up to 450 Bar.
The holding time under pressure is adjustable via the touchscreen panel on the machine of the testing line.
At the end of the cycle, the manipulator picks up the cylinder, rotates it 180 ° and loads it on a free station of the 2 present in the leakage area. The leak test takes place with compressed air at 300 Bar
The leakage test is done with compressed air on the bottom of the cylinder. Unlike the pneumatic test, in this case the cylinder is closed and finished. The test is completely automatic: a hermetic chamber is created externally on the bottom of the cylinder and a special highly sensitive electronic instrument is able to detect the smallest of leaks. Each leakage station is closed by a protective structure in solid grating and plexiglass and has a pneumatic sliding door to allow the passage of the cylinders.
After testing, the manipulator deposits the cylinder vertically in a washing, emptying and drying unit which will then return the cylinder horizontally and overturn it in the roller conveyors that lead to the following stations.
In the automatic line for cylinder testing, if the cylinder does not pass the test it is declared rejected by the system and automatically discharged in a predetermined position.
Leak test and hydraulic test line is equipped with a hydraulic power unit with pressure multipliers and a compressor.
The line can be combined with the GOMG marking machine to compose a complete testing and marking line.