Checking platform of breather valve

Abstract

The invention belongs to a detecting and checking device for discharging and inhaling performances of breather valves of storage tanks of products for petroleum, chemical engineering and the like, and particularly discloses a checking platform of a breather valve. The checking platform comprises a checking console and a mounting and clamping platform, wherein the checking console comprises an air source, a vacuum pump, a slow compression tank, a flow meter A, a flow meter B, a flow meter C, a positive and negative pressure gauge and a vent valve; both the air source and the vacuum pump are connected to the slow compression tank; the air source is also connected to the mounting and clamping platform; the mounting and clamping platform is provided with a to-be-checked breather valve; the input end of the to-be-checked breather valve is connected to the slow compression tank; the positive and negative pressure gauge is connected between the to-be-checked breather valve and the slow compression tank; the vent valve is between the slow compression tank and the positive and negative pressure gauge; and the flow meter A, the flow meter B and the flow meter C are connected in parallel between the vent valve and the positive and negative pressure gauge. The checking platform of the breather valve has the advantages of a wide checking drift diameter range, a wide checking pressure range, an exact checking result and the like, and is satisfied with the American checking standard and checking process requirements on the breather valve.

Description

technical field [0001] The invention belongs to a device for detecting and verifying the discharge and suction performance of a breathing valve of a storage tank for petroleum, chemical and other products, in particular to a checking table for a breathing valve. Background technique [0002] In recent years, the scale of domestic petrochemical and other industries has expanded, and at the same time, it has been in line with international advanced products. The domestic market demand for American standard breathing valves has continued to increase, and every breathing valve must be checked for discharge and suction performance when it leaves the factory and is inspected annually. The diameter of American standard breathing valve series products ranges from 2″ to 24″. During calibration, the breathing valve is required to be kept sealed at a certain vacuum or pressure value, and once it reaches the set pressure, it must be opened smoothly in time to ensure that the medium in th...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a calibration platform that meets the American standard breathing valve calibration standard and calibration process, so as to overcome the above-mentioned deficiencies in the existing breathing valve calibration platform

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