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Pipe box loose lining structure and manufacturing method thereof

A manufacturing method and tube box technology, applied in the direction of manufacturing tools, welding equipment, auxiliary devices, etc., can solve problems such as liner vibration, liner weld fatigue failure, etc., and achieve the effect of easy control and prevention of failure

Active Publication Date: 2017-05-31
XIAN UNITED PRESSURE VESSEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rare metal linings such as titanium, zirconium, tantalum, niobium and their alloys that are loosely lined at room temperature, when used at high temperatures, due to different thermal expansions, there is a large gap between them and the steel flange. If the flow rate of the medium in the equipment is not uniform, It is easy to cause the vibration of the liner and cause fatigue failure to the weld of the liner

Method used

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  • Pipe box loose lining structure and manufacturing method thereof
  • Pipe box loose lining structure and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 The shown pipe box loose lining structure includes a circular cylinder 2 with two ends open, a head 1 welded on one end of the cylinder 2 and a flange 3 welded on the other end of the cylinder 2, the head 1 and cylinder 2 are both made of composite plates made of rare metals and steel plates, the flange 3 is a steel flange, the inner wall of the flange 3 is attached with a liner 7, and the top of the flange 3 is set There is a welding ring 9, the inner side of the welding seam of the head 1 and the cylinder 2 is provided with a first protective cover 8-1, and the inner side of the welding seam of the cylinder 2 and the flange 3 is provided with a second protective cover 8 -2, the first leak detection hole is opened at the welding seam of the head 1 and the cylinder body 2, and the first leak detection hole communicates with the first leak detection nozzle 10-1, and the welding of the cylinder body 2 and the flange 3 There is a second leak detection hol...

Embodiment 2

[0035] The manufacturing method of the pipe box loose lining structure of the present embodiment comprises the following steps:

[0036] Step 1. Put the head 1 (material: titanium steel composite plate, the thickness of the titanium cladding layer is 3mm, the specification is: inner diameter 600mm, thickness 18mm), cylinder 2 (material is titanium steel composite plate) and flange 3 (material It is: steel, the specification is: inner diameter 606mm) grouping, after the grouping is completed and the error variable is detected to meet the requirement of "error variable ≤ 1.5mm", the head 1 is welded to one end of the cylinder body 2, and the flange 3 is welded to the cylinder The other end of body 2;

[0037] 100% RT non-destructive testing is carried out after welding. After testing, the welding conforms to NB / T47013.2-2015 Class I or Class II;

[0038] Step 2: Wrap the electric heating track 4 evenly on the outer wall of the flange 3, then use the thermal insulation cotton 5 ...

Embodiment 3

[0044]The difference between the manufacturing method of the pipe box loose lining structure in this embodiment and that of Embodiment 2 is that in all parts made of composite plates, the layers of rare metal materials are replaced by titanium alloys, tantalum, and tantalum. alloy, zirconium, zirconium alloy, niobium or niobium alloy. In all rare metal parts, the material is replaced by titanium alloy, tantalum, tantalum alloy, zirconium, zirconium alloy, niobium or niobium alloy.

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Abstract

The invention provides a pipe box loose lining structure. The structure comprises a cylinder, a seal and a flange; the seal and the cylinder are both manufactured by composite boards; the flange is a steel flange; a lining cylinder is bonded on the inner wall of the flange; a welding ring is arranged at the top of the flange; protective cover plates are respectively arranged on the inner sides of welding lines between the seal and the cylinder and on the inner sides of welding lines between the cylinder and the flange; leakage detecting holes are respectively formed in the welding lines between the seal and the cylinder and in the welding lines between the cylinder and the flange; each leakage detecting hole is communicated with a leakage detecting nozzle; and the lining cylinder, the welding ring and the protective cover plates all adopt rare metal materials. The invention further provides a method for preparing the pipe box loose lining structure. The pipe box loose lining structure can effectively prevent failure of the rare metal lining cylinder in actual operation of composite structure equipment of rare metal and steel.

Description

technical field [0001] The invention belongs to the technical field of composite board equipment manufacturing, and in particular relates to a pipe box loose lining structure and a manufacturing method thereof. Background technique [0002] Rare metals such as titanium, zirconium, tantalum, niobium and their alloys are more and more widely used in petrochemical and other fields due to their excellent corrosion resistance in many acids, alkalis and other media. However, due to the high cost of rare metals such as titanium, zirconium, and tantalum, petrochemical equipment usually adopts a composite structure of titanium / steel, zirconium / steel, and tantalum / steel in order to reduce costs when they are widely used. Corrosion requirements can also meet the strength requirements. [0003] Titanium, zirconium, tantalum, niobium and their alloys and steel composite structure equipment. The cylinder and head are made of composite plates. The composite cost of steel flanges and rare ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/235B23K9/32B23K37/00
CPCB23K9/16B23K9/235B23K9/32B23K37/00B23K2103/18
Inventor 袁敏哲郗大来王娅辉叶建林纪腾飞李宁王宁郝伟伟
Owner XIAN UNITED PRESSURE VESSEL CO LTD
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