We got acquainted with turnaround fittings. Excellent and reliable devices, only at a rupture of the pipeline such devices do not solve all complex of tasks. There is a speech about a rupture of pipelines. In particular it essentially when the working environment represents danger. Such situation quite often appears on chemical production or the nuclear power plant. In most cases the such occurs on pulse pipelines of small diameters which are used for connection of various measuring equipment, or giving of the managing director of the environment.
Fig. 1. Disconnecting fittings.
For overlapping such We got acquainted with turnaround fittings. Excellent and reliable devices, only at a rupture of the pipeline such devices do not solve all complex of tasks. There is a speech about a rupture of pipelines. In particular it essentially when the working environment represents danger. Such situation quite often appears on chemical production or the nuclear power plant. In most cases the such occurs on pulse pipelines of small diameters which are used for connection of various measuring equipment, or giving of the managing director of the environment.
Fig. 1. Disconnecting fittings.
For overlapping of such pipelines the disconnecting fittings serve in emergencies. It is clear that if it is extended pipelines as heating or water supply system, introduction of those fittings will be inefficient, it is necessary to put strongly many disconnecting valves. In such situations usually use other systems. For example, fix the fact the fact of a gap. For this purpose pressure sensors, or sensors of leakages can be used. And already later, the pipeline is blocked on input or in its certain part.
And here on small pipelines, for example, at a supply of diesel fuel from storage capacity to a copper, or on an exit of hot water from a boiler, disconnecting valves completely can be used. A problem that it is necessary to block a leakage promptly.
On own device disconnecting valves happen 2 types, at all this, differ only a zadatchik. The spring zadatchik therefore gained extensive distribution is simpler. the 2nd type of valves, is cargo disconnecting valves. In view of difficulty of a design their distribution is limited. On own mission of versions of disconnecting valves slightly more. Valves for regulated are issued or there is no environment expense. As sealing valves happen with silfony or without it.
Fig. 2. The scheme of a design of the disconnecting valve.
The principle of act of disconnecting valves is identical with operation of regulating on-off valves already familiar to us which are used for control of an expense of a working environment. Only the regulation range in this case will be very very narrow. In other words at expense excess, and and happens at a leakage, the valve is blocked.
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