Tank bottom weld vacuum test box / vacuum test box Model: GL-1 First, tank bottom weld vacuum leak detection box evacuator for vacuum leak test vacuum leak box with thin plate made of bottomless rectangular box, box top Strictly inlaid with a thick glass, the bottom of the box is wrapped with a non-breathable sponge rubber, so that the box is tightly fastened to the bottom plate. The box is painted with a reflective white paint. The box is equipped with a suction short pipe and an intake valve. When testing the weld, first apply soapy water on the weld, then buckle the vacuum box, and use a vacuum pump to pump the inside of the box to a vacuum of 55 kPa, preferably above -70 KPa; observe whether there are bubbles in the box, if any Bubbles should be marked to be welded. Tank bottom weld vacuum leak detectors are often used to inspect tank welds, especially circumferential welds, which are not commonly used for the entire tank bottom. The tank bottom weld vacuum leak detection box evacuator is installed outside the vacuum box, and generates a certain negative pressure value through 0.5MPa compressed air, generally above -70KPa, to realize the vacuum leak test of the weld seam. 2. The structure of the evacuator: The bottom weld vacuum leak detection box evacuator is a three-way structure, the suction port is vertical or can be used at a certain angle. The general material is carbon steel, the interface specification is 4 points outer wire connection; the outlet is connected to the atmosphere; the negative pressure value is at - Above 70KPa, especially suitable for vacuum box test device; Third, vacuum test box use method: 1, if the user has vacuum pump vacuum, you can directly select the test box, no vacuum ejector; 2, such as using compressed vacuum For testing, it must be used together with the test box and vacuum ejector; 3. The bottom of the test box is sealed with a vacuum rubber seal. 4. The weld inspection length is 600mm. 5. The detection box window is tempered glass. 6. The test box is equipped with a bleed valve (1/2") and a vacuum gauge (Y-60). 7. Size: 750*250*150
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