Despin device for long-range straight-flow type fire water monitor and processing process

Abstract

The invention discloses a despin device for a long-range straight-flow type fire water monitor and a processing process. The despin device comprises a fire water monitor head, a spray tube, a flow straightener, a bent tube I, a bent tube II and a despin sheet, wherein the bent tube I and the bent tube II are connected by a flange structure; the eccentric part of the despin sheet is welded on the inner part of the bent tube I; the flow straightener is arranged on the inner part of the spray tube in a sleeving mode, and is welded and fixed by a welding process; the fire water monitor head is arranged on the spray tube in a threaded connection mode; a sawtooth type micro guide slot is processed in a runner inside the fire water monitor head for reducing flow resistance at a spray nozzle; and through co-action of the despin sheet inside the bent tube I, the flow straightener inside the spray tube and the micro guide slot in the spray nozzle, the range of the long-range straight-flow type fire water monitor can be remarkably increased.

Description

technical field [0001] The invention relates to a jet de-rotation device, in particular to a de-rotation and flow stabilization device in a water cannon. The device is mainly used for a large-flow long-range straight-line fire-fighting water cannon. Background technique [0002] Fire-fighting water cannon is the most common fire-extinguishing device in fire-fighting equipment. According to the application occasion, it can be divided into two types: land-use fire-fighting water cannon and marine fire-fighting water cannon. Due to the limitation of water consumption, "General Technical Specifications for Remote Control Fire-fighting Cannon System GB 19157-2003" It stipulates that the maximum flow rate of land fire water cannon is 720m 3 / h, the range is not less than 110m. As for the marine fire-fighting water cannon, because the power of the marine engine is larger, the pressure and flow rate of the pump set is much higher than that of the land-use fire-fighting water cannon...

AI Technical Summary

Problems solved by technology

The rotation of the water flow through the pipeline will cause violent rotation, resulting in uneven distribution of the flow velocity at the water outlet, which will significantly affect the range of the water cannon. Therefore, it is necessary to install a flow stabilizer in the cannon tube to reduce the vortex of the water flow.

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