Belleville spring loaded automatic compensation double-ball valve

Abstract

The invention discloses a belleville spring loaded automatic compensation double-ball valve. The belleville spring loaded automatic compensation double-ball valve comprises a valve body (8) and two ball valve assemblies which are installed inside the valve body (8) and are the same in structure. Each ball valve assembly comprises a supporting base (4), a valve seat (6) installed inside the supporting base (4) and a valve ball (7) installed on the valve seat (6); belleville springs (3) are placed on the two sides of the supporting base (4); a valve rod (10) is connected to the upper end of the valve ball (7); a filler (9) is installed between the valve body (8) and the valve rod (10); a filler pressing ring (11) is installed on the filler (9); the upper end of the valve rod (10) is connected with a hexagonal nut (13) and a handle (15); and end connectors (1) are screwed to the two ends of the valve body (8). According to the belleville spring loaded automatic compensation double-ball valve, the structure design is reasonable; the sealing performance is high; the service life is long; the structure of the double ball valve assemblies is adopted; and when one ball valve leaks, the other ball valve can serve as an emergency cut-off valve to be used.

Description

technical field [0001] The invention relates to a valve, in particular to a disc spring-loaded automatic compensation double ball valve with reasonable structure design, good sealing performance, long service life and excellent performance. Background technique [0002] Ball valves have been widely used in the market because of their large diameter, no flow resistance, and large pressure valves. However, ball valves generally have a single ball valve structure. During use, valve seat wear will occur every time the valve is switched. If there is an internal leakage, the entire upstream system needs to be shut down to achieve cut-off and maintenance. Especially in new energy systems, the ball valve is the only cut-off valve for the entire pipeline. Leakage at one end can easily cause major accidents. [0003] Therefore, it is very necessary to design and develop a disc spring-loaded automatic compensation double ball valve with reasonable structure design, high sealing perform...

AI Technical Summary

Problems solved by technology

[0002] Ball valves have been widely used in the market because of their large diameter, no flow resistance, and large pressure valves. However, ball valves generally have a single ball valve structure. During use, valve seat wear will occur every time the valve is switched. If internal leakage occurs, the entire upstream system needs to be shut down to achieve cut-off and maintenance. Especially in new energy systems, the ball valve is the only cut-off valve for the entire pipeline. If one end leaks, it will easily cause major accidents.

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