CN204267954U - The groove formula circular arc of resistance to cavitation elbow - Google Patents

Abstract

A kind of groove formula circular arc of resistance to cavitation elbow, comprise body, groove, outside, inner edge, liner, overall body is one step shaping seamless elbow structure, be concentricity circular arc ring with inner edge outside body, inboard wall of tube body corner is designed to circular arc slideway excessive structural, body two ends are equipped with groove, groove is " V " word shape, inside body two-port, all annular groove is set, liner one end is stuck in annular groove, the liner the other end and inboard wall of tube body have gap, liner is toroidal, inside be lined with two, two liners are placed in inboard wall of tube body in the same way, convenient welding, good seal performance, beautiful shape, in elbow, outer tube ancient piece of jade, round, flat and with a hole in its centre smooth surface is complete, increase the service life.

Description

The groove formula circular arc of resistance to cavitation elbow

Technical field

The utility model relates to a kind of bend pipe tools, particularly a kind of groove formula circular arc of resistance to cavitation elbow, is the pipe fitting changing pipeline direction, alleviates the pipe fitting of fluid impact, effectively prevents joint area from the leakage phenomenon that cavitates can not occur.

Background technique

Bend pipe tools widely uses in different fields and industry, the bend pipe tools that pipe-line system uses, be mainly used in pipeline turning place, elbow is weak link outstanding in piping, wear-resistant bend is mainly used in coal-burning power plant's ash disposal, scum pipe, powder feeding, powder retrieving pipe, desulfuration pipeline, because fed sheet of a media has the features such as hardness is high, flow velocity is fast, flow is large, fed sheet of a media continues to produce impact, wearing and tearing, cavitation erosion etc. to tube wall for a long time, make the tube wall of elbow thinning, occur pit and the pit of local, generation fatigue causes and is gradually worn through.Meanwhile, the two ends of wear-resistant bend are welded structure, and joint area easily leaks, and causes economic loss to user.

Summary of the invention

For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of groove formula circular arc of resistance to cavitation elbow, comprises body, groove, outside, inner edge, liner.

The utility model solves the technological scheme that its technical problem adopts: overall body is one step shaping seamless elbow structure, be concentricity circular arc ring with inner edge outside body, inboard wall of tube body corner is designed to circular arc slideway excessive structural, body two ends are equipped with groove, groove is " V " word shape, inside body two-port, all annular groove is set, liner one end is stuck in annular groove, the liner the other end and inboard wall of tube body have gap, liner is toroidal, inside be lined with two, two liners are placed in inboard wall of tube body in the same way.

The utility model beneficial effect: convenient welding, good seal performance, beautiful shape, the inner and outer pipe ancient piece of jade, round, flat and with a hole in its centre smooth surface of elbow is complete, increases the service life.

Accompanying drawing explanation

Fig. 1 is the utility model overall structure schematic diagram;

In figure, 1, body, 2, groove, 3, outside, 4, inner edge, 5, liner.

Embodiment

As shown in drawings, the utility model comprises body 1, groove 2, outside 3, inner edge 4, liner 5, and overall body 1 is one step shaping seamless elbow structure, with swaging machine, tube to tubesheet is shaping, guarantees that seamless-molding is processed; Outside body, 3 is concentricity circular arc ring with inner edge 4, and body 1 inwall corner is designed to circular arc slideway excessive structural, and alter direction slowing down fluid are to the cavitation of pipe fitting inner wall; Body 1 two ends are equipped with groove 2, and groove 2 is " V " word shape, when the groove 2 of " V " word shape is connected with pipeline, under the squeeze flow effect of pipeline, formation seals naturally, and carries out welding processing at body 1 and pipeline junction, and weld layer forms secondary seal; Inside body 1 two-port, all annular groove is set, liner 5 one end is stuck in annular groove, liner 5 the other end and inboard wall of tube body have gap, liner 5 is toroidal, and liner 5 is provided with two, and two liners 5 are placed in inboard wall of tube body in the same way, fluid is when liner 5, liner 5 convection cell produces buffer function, reduces fluid and cavitates to inboard wall of tube body, extend body 1 working life.

Claims (4)

1. the groove formula circular arc of a resistance to cavitation elbow, comprise body, groove, outside, inner edge, liner, it is characterized in that: overall body is one step shaping seamless elbow structure, be concentricity circular arc ring with inner edge outside body, body two ends are equipped with groove, all arrange annular groove inside body two-port, liner one end is stuck in annular groove, and the liner the other end and inboard wall of tube body have gap.

2. the groove formula circular arc of resistance to cavitation elbow according to claim 1, is characterized in that: described inboard wall of tube body corner is designed to circular arc slideway excessive structural.

3. the groove formula circular arc of resistance to cavitation elbow according to claim 1, is characterized in that: described groove is " V " word shape.

4. the groove formula circular arc of resistance to cavitation elbow according to claim 1, it is characterized in that: described liner is toroidal, is inside lined with two, two liners are placed in inboard wall of tube body in the same way.