CN HDFM - Valve Information, Valve Technology

Abstract: In order to solve the case from under the rod during the rush blowout jet when conventional methods do not exist the problem in time, developed a rod plug valves. The device is based on the plug in the pipeline processing, light weight, simple operation, quick grab spray characteristics, the field trials, the effect is good. More than 20 ports in the high-pressure spray construction of oil and gas wells in the looting of 100% success rate, with significant economic and social benefits.

Keywords: Plug valve; rod; BOP; structure

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Posted in Technical Literature | Tagged Plug valve

Abstract: This article from the basic principles of safety valve, failure and elimination of maintenance checks were introduced, while stressing the safety valve in the pressure class of the importance of the operation of special equipment.

Keywords: pressure safety accessories special equipment; safety valve; failure and elimination; maintenance and inspection

Special equipment from the 2008 National security information that: in 2008 there were 307 incidents of special equipment, the death of 317 people and injuring 461 people, the direct economic loss of 97.8948 million yuan, while the direct result of failure or safety devices, safety accessories accident caused damage to 17, accounting for special equipment in 2008 the number of accidents from 5.5% of the total, mainly boilers, pressure vessels, pressure pipes, elevators and lifting safety device failure or corrupted.

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Posted in Technical Literature | Tagged Check valve • Safety valve • Valve maintenance

Keywords: boiler; safety valve; failure

Relief valve is a very important protection with the valve, widely used in various pressure vessels and piping systems, when the pressure in the system pressure exceeds the set value, it automatically opens, the surplus in the media released into the atmosphere to ensure the safety of pressure vessels and piping systems running prevent accidents, and when the pressure back down to work within the system pressure or slightly lower than the working pressure can automatically shut down. Reliable safety valve work is directly related to equipment and personal security, so attention must be given.

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Posted in Technical Literature | Tagged Safety valve

(Access this article on the article: “Butterfly valve closed failure analysis and processing method (Part I)“)

3.3 Close the valve during valve closure is less than the required torque by the friction moment of the premises bearing

In order to prevent the valve opening to prevent siltation, water flow valve closed against the lower edge of the hydrodynamic torque M always tend to close the valve, valve hydrodynamic pressure on the component of p along the flow direction along the flow direction, vertical component P₁ upward direction.

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Posted in Technical Literature | Tagged Butterfly valve