Smart ball valve

Abstract

The invention discloses a smart ball valve and belongs to the field of pressure valves. The smart ball valve comprises a valve body, a leak detector and a support, wherein the leak detector and the support are mounted on the valve body. A transmission device mounted on the support is connected with two driven gears through two driving gears, connected with the transmission device, on a spindle, wherein the two driven gears on two valve stems are connected with two independent balls mounted in the valve body together. A bidirectional clutch is mounted between the two driving gears, and a sealing ball in the valve body and a valve seat on the valve body form a sealing unit. Another sealing ball in the valve body and a movable valve seat in the valve body form a second sealing unit. The actions of the transmission device include two stages: in the first stage, one of the balls stops after rotating by 90 degrees; in the second stage, the leak detector transmits signals to the transmission device after detecting leak after the first stage, the transmission device automatically acts while the other sealing ball is stopped after rotating by 90 degrees, and the transmission device is kept still when no leaks are detected by the leak detector. The bidirectional clutch is separated from one of the driving gears while being meshed with the other driving gear after the first stage and before the second stage. The smart ball valve is good in sealing performance, and the valve still stays in tightly-sealed no-leak state even if one of the sealing units leaks. The smart ball valve is simple in structure and convenient to operate and maintain, and the service life thereof is greatly prolonged.

Description

Technical field [0001] The invention relates to the field of pressure valves, and is particularly suitable for use in the electric power and petroleum and petrochemical industries, and is a valve used in high-temperature and high-pressure pipeline systems to prevent internal leakage and completely block or communicate the flow path of the system. technical background [0002] A large number of high temperature and high pressure valves are used in high temperature and high pressure system pipelines in my country's thermal power generation enterprises and petroleum and petrochemical industries. It is divided into two categories, one is regulating valve and the other is blocking valve. The blocking valves are mainly globe valves, gate valves and ball valves of various domestic and imported brands. According to users' feedback, the actual operation of such valves Both imported brands and domestic brands have different degrees of internal leakage. At present, there is no valve product...

AI Technical Summary

Problems solved by technology

The ball valve has various problems that once it leaks, the valve will quickly fail as a whole. In view of the defects and deficiencies of the above-mentioned types of valves, a new one can meet the long-life requirements in harsh working environments such as high temperature and high pressure. Leakage can quickly contain the leakage of zero-leakage high-end valve

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