SU152116A1 - Device for testing closed volumes for tightness - Google Patents

Description

DEVICE FOR TESTING CLOSED VOLUMES ON TIGHTNESS

March 29, 1962, no. 771280 / 26-10 B Committee on Inventions and Discoveries at the Council of Ministers of the USSR

Published in the “Bulletin of inventions No. 23 for 1962. Main gvt. St. No. 122324 of June 20, 1958 in the name of A. A. Rossokhin

BASIC Auth. St. No. 122324 describes a device for degassing a test liquid when testing closed volumes for tightness.

A distinctive feature of the described device for testing closed volumes for tightness is that the liquid degassing vessel is equipped with a number of inclined trays that allow the liquid to flow in a thin layer, and the hydraulic valve, which is also a collection of non-bled liquid, is fitted with a valve coupled with a float equalizer unbound liquid from external atmosphere. A device of this design speeds up the process and increases the efficiency of decontaminating the working fluid.

The drawing shows schematically the described device for testing closed volumes for tightness.

A pressure test vessel 2 is installed on the table 1, connected via pipelines 5 and 4 to an open liquid collector 5, which simultaneously performs the functions of a hydraulic shutter preventing the vessel 6 from degassing the liquid from the ingress of air. The vessel 2 is made of glass or with observation ports and is evacuated with a foreline pump through pipeline 7, equipped with a three-way valve 8. Liquid is supplied to vessel 2 through pipe 9 with valve 10. Drain the used liquid through pipe 4 to the collector. Control

and F. P. Fadeeva

No. 152116-2 -

vacuum in the vessel is carried out using a man-vacuum meter //. On top of the vessel 2 is sealed with a lid 12.

The collection of non-bottled liquid is equipped with a float level sensor 13, which communicates through valve unit 14 with valve 15. Evacuation of the collector is carried out with a fore vacuum pump through pipeline 7. The vessel 6 for degumming the liquid is connected via pipeline 16 with the collection and equipped with filter 17 and inclined trays 18 dripping with a thin layer of liquid from top to bottom. This speeds up the process of degassing the working fluid. In the lower part of the vessel 6, a norshne pump 19 is installed for supplying the degenerated liquid through the pipeline 9 to the test vessel. The pump piston is driven by the rod 20. Vacuum the vessel 6 through the pipe 21 with the valve 22. The vacuum is controlled with a vacuum gauge 23.

. Before the test, the liquid is poured into the vessel 6, stacked in trays, degassing. For testing, product 24 is first vacuumized. vessel 2, pour out the out-of-work liquid into it, let in air, immerse the product and again vacuum vessel 2 to 5-1 mm Hg. Art. After that, begin to observe the product. A sign of leaks is gas outflow in the form of a jet or individual bubbles. After the test, the product is removed and the liquid is drained into the collection. The agitated liquid from the collector at atmospheric pressure is pumped into the vessel for degassing into the cavity above the filter.

The proposed device can be used to test the tightness of closed volumes under vacuum with immersion of the test tank in a liquid poured into a vessel with a viewing window.

Subject invention

Device for testing closed volumes for leak tightness according to ed. St. No. 122324, characterized in that, in order to accelerate the process of degassing the working fluid and to increase the efficiency of this process, in it the tank for degassing is equipped with a number of inclined trays for the flow of fluid in a thin layer, articulated with a float gauge to protect the out-of-water liquid from the external atmosphere.

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