Anti-theft device of valve

Abstract

The invention discloses an anti-theft device of a valve. The anti-theft device comprises a pup joint and an end cover; the pup joint is connected with the end cover; a round groove is formed in the end cover; a plurality of vertical arc-shaped grooves are formed on the inner wall of the end cover in a circular manner; the end cover is arranged in the pup joint; seal rings are arranged between the end cover and the pup joint; a plurality of sealing grooves communicated with a through hole in the middle of the pup joint are formed in the lower end of the pup joint; the seal rings are arranged in the sealing grooves; and the number of the arc-shaped grooves is three. The anti-theft device provided by the invention has the advantages that the anti-theft device is totally made of machine parts, the structure is simple, the machinability is good and the manufacturing cost is low; and the anti-theft device is not influenced by the diameter of the valve, so that the anti-theft device is applicable to valves of different models, and the working reliability is high.

Description

technical field [0001] The invention relates to an anti-theft device, in particular to a valve anti-theft device, which belongs to the technical field of valves. Background technique [0002] Valves are the control components in the fluid conveying system. They have the functions of cut-off, regulation, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. They are widely used in petroleum, chemical, natural gas, hydropower and other industries. However, some criminals steal the fluid in the pipe through the valve, causing losses to the enterprise. Installing an anti-theft device in the valve can prevent some criminals from opening the valve. General valve anti-theft devices are usually through anti-theft lock cylinder devices, electronic anti-theft devices and permanent magnet anti-theft devices. The permanent magnet anti-theft device needs to make a large permanent magnet, and the electronic anti-theft device needs to...

AI Technical Summary

Problems solved by technology

The permanent magnet anti-theft device needs to make a large permanent magnet, and the electronic anti-theft device needs to make special electronic circuit boards and precision mechanical components, which is expensive to manufacture; while the anti-theft lock cylinder device relies on a cover to prevent rainwater from entering the lock cylinder. Open, the lock cylinder is exposed to the atmosphere, easy to rust, poor reliability

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