CN205424230U

CN205424230U - Novel wear -resisting L type pipeline anticorrosives

Info

Publication number: CN205424230U
Application number: CN201521019390.3U
Authority: CN
Inventors: 姚铭; 黄威; 孟晓雨
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2015-12-10
Filing date: 2015-12-10
Publication date: 2016-08-03
Anticipated expiration: 2025-12-10

Abstract

The utility model provides a L type pipeline to pipeline outer wall and elbow department corrosive wear phenomenon, all adheres to lined pipeline of rubber and shaping method at the pipeline inside and outside wall. All there is the rubber lining in inboard and the outside of characterized by pipe wall, straight tube way department rubber lining inside and outside wall thickness is even, lining in that the elbow is located is thickeied in the inboard, to both sides attenuation gradually, the suitable combination mandrel of the inside adoption of whole pipeline, the fixed combination pipeline that is greater than former pipeline diameter 20mm in the outside, form the backing layer through pressing the mode of annotating to pour into the global broad gap that varies that forms into between lining elbow inner wall and mandrel, and the backing layer that forms in the global aequilate clearance of outer wall and sleeve pipe formation. Because the inside and outside wall all has rubber to make the inoxidizing coating, outerly effectively slowed down the secret outer corruption that causes embedding the time, the inboard wearability that has improved the pipe wall has relatively prolonged the whole life of elbow, makes it to reach the equal life with pipeline, can not influence normal use again moreover, and the stand wear and tear L type pipeline of anticorrosion of this patent is applicable to blowdown, oil field, mine, building materials trade.

Description

A kind of Novel anticorrosion wear-resisting L-type pipeline

Technical field

This utility model relates to a kind of to significantly improve the wear-resisting L-type pipeline of pipeline corrosion protection and forming method.

Background technology

Metal is due to corrosion and wear-out failure; the economic loss directly contributed is the most considerable; the 1/3 of the most annual metallurgic product will be scrapped due to corrosion. same for blowdown, oil, mine ore pulp etc. carry certain solid content pipeline; the attrition and attack of inwall is the severeest; traditional embedding pipeline anti-corrosion measure is more single; common rubber lining uses General Purpose Rubber; relatively low in anti tear, shock resistance, wear-resistant aspect performance, do not play the effect of composite double layer protection.

Summary of the invention

Based on above deficiency; this utility model devises a kind of novel anticorrosion wear-resisting L-type pipeline; including inner and outer walls of pipeline anticorrosion antiwear rubber layer; it is characterized in that described anticorrosion antiwear inner-walls of duct and outer wall all adhere to rubber cover; thicken at elbow arch; forming side face unequal rubber lining layer, wherein arch portion rubber adhesive layer is the most thinning to both sides, smooth transition.One is to slow down the electrochemical corrosion caused due to embedding underground, two is to slow down containing rheid the impact of the erosion corrosion of tube wall (parcel mechanical erosion and corrosion are washed away), three to be designed to L-type be that more convenient (corner fluid turns to for the process of joint at tube bends, produce centrifugal force, the fluid flow state making pipe bent position produces large change, the pressure of elbow tube wall can be increased, by adding the length of straight pipe on long bend both sides, reducing elbow docking and process the loss of flood peak caused) rubber layer uses EVA hot-melt adhesive and makees lining, EVA hot-melt adhesive cohesiveness is big, melt surface tension force is little, almost all of material there is hot glue relay, compare conventional vulcanization rubber and there is preferably shock resistance, wear-resistant, decay resistance.

Accompanying drawing explanation

Fig. 1 is that this utility model implements rubber lined structural representation inside and outside L-type pipeline.

Fig. 2 is the pipe bent position sectional structure schematic diagram of Fig. 1.

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described in detail method.

It is enforcement figure with reference to Fig. 1, start with elbow, external mold is being made with fixing by outermost layer assembled casing 8, and at assembled casing inwall coating release agent, smear binding agent at pipeline 5 inwall and outer wall simultaneously, inner bore of pipeline is fixed core coating release agent, its core mould by 7.1 and 7.2 and 9 couple of straight tube be combined into, fixed by the concave-convex opening intersected, L-type pipe ends has the long cover plate of cover plate 1.1,1.2(respectively), 12, the short cover plate of 13() by bolt and core 7 and 9, the longest cover plate is to preferably fix core with the effect of short cover plate, and dismounting core.

Wherein 2 is the inlet of hot melt rubber, and the hot melt EVA rubber that would be heated to 100 degree injects along pressure injection mouth 2, during until carefully slowly flowing out hot melt rubber in row's mouth 10, stops pressure injection, then the cooling demoulding in 3 hours.Owing to being inside and outside lining rubber pipeline, slow down due to the embedding electrochemical corrosion caused for outer layer, inner city is slowed down the corrosion of erosive wear and Chemical cover and is all significantly increased, and uses environmental protection EVA hot-melt adhesive also to extend the service life of pipeline while environmental protection.

Claims

1. a Novel anticorrosion wear-resisting L-type pipeline; including L-type metallic conduit and inside and outside wall anticorrosion antiwear rubber layer; it is characterized in that described anticorrosion antiwear inner-walls of duct and outer wall all adhere to rubber cover, wherein thicken at elbow arch, form side face unequal rubber lining layer.

2. require described anticorrosion antiwear L-type inner and outer walls of pipeline according to right 1, it is characterised in that described anticorrosion antiwear layer is EVA hot melt rubber.

3. according to anticorrosion antiwear inside and outside wall rubber layer described in right 1, it is characterised in that described arch portion rubber adhesive layer is the most thinning to both sides, smooth transition.