SU902762A1 - Device for preventing inflammation and extinguishing fire of combustible material stream from well - Google Patents

Description

(54) DEVICE FOR PREVENTION OF INFLAMMATION AND EXTINGUISHING THE FLOW OF OIL FROM A WELL

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The invention relates to devices that prevent the ignition and to prevent the flow of liquid and gaseous fuel from the well.

A device for preventing ignition and extinguishing a liquid fuel is known, comprising a cylindrical body of varying diameter with nozzles and a nozzle forming an annular chamber for the extinguishing means 1 with the body.

A disadvantage of this device is that it does not provide a high efficacy of flaking, since it does not impart a spiral vortex motion to the flow and does not completely move the extinguishing agent and fuel.

The purpose of the invention is to increase the efficiency of the device.

The goal is achieved by the fact that in a device comprising a cylindrical body of variable diameter with nozzles and a nozzle that forms an annular chamber for fire extinguishing means with the body, the inner surface of the body has a spiral groove, the nozzles being installed in the groove and in its lower turn,

radially, and in subsequent turns - with a variable deviation from radial to tangential, with the axes of the inclined nozzles coincide in the vertical plane with the angle of elevation of the spiral groove.

FIG. 1 shows an incision device; in fig. 2 - the location of the nozzles in the first lower thread; in fig. 3 - the location of the nozzles in subsequent after the first thread windings.

The device consists of a casing 1 of a reversing inner diameter with a spiral groove 2, on the inner surface of which there are channels 3, nozzles 4 installed in these channels, and a nozzle 5 forming an annular chamber 6 with the casing.

15 means in the chamber 6.

Claims (1)

In the first lower turn of the thread, the nozzles are arranged horizontally and radially towards the inner surface of the housing 1, and in the second and subsequent upper turns of the thread, the direction of the nozzles deviates from the radial by an angle, which increases with each successive turn in the direction of the thread rise. In the last upper turn of the nozzle are located tangentially to the inner surface of the housing 1. The direction of the nozzles in the vertical plane in the second and subsequent turns of the thread coincides with the angle of the thread. The device is permanently installed between the preventer and the wellbore mouth. In the event of the occurrence of an open fountain, an extinguishing agent is supplied through the conduit 7 under pressure exceeding the pressure in the housing 1. Depending on the type of open fountain (oil, gas or displaced), the type of fire-extinguishing agent and its consumption are selected. The 4 jets of fire extinguishing agent discharged from the nozzles were broken with it, twisting it. The nozzles 4 are made in the form of injectors with non-return valves or the non-return valve should be installed in the pipeline 7. The device is simple in design and in manufacture, its use ensures safe working conditions at the mouth of the emergency well. Apparatus of the Invention: Preventing and igniting the flow of fuel from a borehole; comprising a variable diameter cylindrical body with nozzles and a nozzle forming an annular chamber for the fire extinguishing agent with the body, characterized in that, to increase the working efficiency, the inner surface of the body has a spiral groove, with nozzles installed in the groove and in its lower coil, oriented radially, and in subsequent Gui; k x - with a SJeTeNnym deviation from radial to tangential, n In this axis of the inclined nozzles coincide in the vertical plane with the angle of elevation of the spiral groove. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 591157, cl. A 62 C 3/00, 1971.