CN102607301B - Non-detachable access hole-free nickel-base alloy heat exchanger for high-pressure high-acidity natural gas - Google Patents
Non-detachable access hole-free nickel-base alloy heat exchanger for high-pressure high-acidity natural gas Download PDFInfo
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Abstract
The invention discloses a non-detachable access hole-free nickel-base alloy heat exchanger for high-pressure high-acidity natural gas, which belongs to the technical field of heat exchangers and comprises a tube connection flange, an elliptic head, a tube box short section, a damper, a tube plate, a connection tube, a flange, a baffle, a barrel, an expansion section, a distance tube, a pull rod, a gasket, a nut, a saddle and a heat exchange tube. The non-detachable access hole-free nickel base alloy heat exchanger for high-pressure high-acidity natural gas has the advantage as follows: through the heating or cooling of the heat exchanger, the situations of the high-pressure high-acidity natural gas in various actual production conditions such as shaft, ground gathering and the like can besimulated, and test data of key technologies such as corrosion of nickel base alloy material caused by high-acidity natural gas in a test tube, sulfur deposition, hydrate and the like is provided. The heat exchanger is reasonable in structure, low in cost, resistant in intergranular corrosion of the high-acidity natural gas, good in sealing property and high in security.
Description
Technical field
The invention belongs to technical field of heat exchangers, the nickel-base alloy heat exchanger of a kind of high pressure peracidity natural gas with non-disconnectable no inspection opening particularly is provided.
Background technology
Behind the domestic largest-Pu phosgene field, self-contained marine facies gas field----of domestic discovery, Xuanhan County, Dazhou City, the Northeast, comfortable river, country send engineering to classify national Eleventh Five-Year Plan key project as in the gas east, river centered by Dazhou City, in Eleventh Five-Year Plan key industry development plan has been listed Dazhou City's natural gas energy resource chemical base construction by Sichuan Province, Dazhou City government has proposed the five-year and has built up the target of western part of China natural gas energy resource chemical base, and has released general phosgene field relevant natural gas industry project and supporting project.For carrying out the project exploitation, Sinopec has been established peracidity gas field trial chamber, by the skid mounted equipment of particular design, finish under the multiple actual production conditions such as simulation wellbore hole, surface gathering and transferring the various burn into sulphur depositions in the developmental tube and the dynamic test data of hydrate.Design and the manufacturing of the capital equipment in this laboratory accepted by my company, this heat exchanger is exactly a kind of skid mounted equipment wherein, at general phosgene field reserves abundance height, gas reservoir pressure height, hydrogen sulfide and carbon dioxide content height, gas reservoir buries dark characteristics, my company has designed the nickel-base alloy heat exchanger of this utility model high pressure peracidity natural gas with non-disconnectable no inspection opening, high pressure peracidity natural gas is through this heat exchanger heat temperature raising or refrigeration cool-down, carry out the throttling pressure regulation again and reach wellbore tubular, the pressure and temperature that collector and delivery pipe is required, test out the key technology data of high pressure peracidity natural gas under the simulation actual condition, realize the preferred research of key equipment and material.
Summary of the invention
The object of the present invention is to provide a kind of high pressure peracidity natural gas with the nickel-base alloy heat exchanger of non-disconnectable no inspection opening, solve the simulate live of high pressure peracidity natural gas heat temperature raising or refrigeration cool-down, realize providing high pressure peracidity natural gas in developmental tube to key technology data such as the burn into sulphur deposition of nickel-bass alloy material and hydrates.And the intercrystalline corrosion that this heat exchanger structure is reasonable, cost is low, high pressure resistant peracidity natural gas produces, safe.
The present invention includes pipe connecting flange, ellipse head, bobbin carriage pipe nipple, baffle plate, tube sheet, adapter, flange, deflection plate, cylindrical shell, expansion joint, distance sink tube, pull bar, packing ring, nut, saddle, heat exchanger tube.First cylindrical shell 9, expansion joint 10, second cylindrical shell, 13 assembly weldings become shell side) cylindrical shell, shell-side cylinder is burn-on and first is taken over 6, first flange 7, second and take over 22, second flange 23, the shell-side cylinder front end welds mutually with first tube sheet 5, load onto first pull bar 15, second pull bar 18, first distance sink tube 11, second distance sink tube 14, the 3rd distance sink tube 25, the 4th distance sink tube 26, first deflection plate 8, second deflection plate 12, packing ring 16, nut 17 in the shell side side of first tube sheet 5, weld mutually with second tube sheet 20 the shell-side cylinder rear end again, forms shell side; Put on heat exchanger tube 24; Bobbin carriage before and after first pipe connecting flange 1, ellipse head 2, bobbin carriage pipe nipple 3, baffle plate 4, first tube sheet 5, second pipe connecting flange 19, second tube sheet, 20 assembly weldings become, front and back bobbin carriage and heat exchanger tube 24 are formed tube side; Constitute heat exchanger, heat exchanger saddle 21 support fixation.
First pipe connecting flange 1, second pipe connecting flange 19 adopt UNS N08825IV (IV level nickel-base alloy forging), ellipse head 2, bobbin carriage pipe nipple 3, first tube sheet 5, second tube sheet 20 adopt 16Mn IV at tube side (term) inner surface side built-up welding 5mm625 (nickel-base alloy), heat exchanger tube 24 adopts UNS N08825 seamless pipe (nickel-based alloy pipe), and baffle plate 4 adopts UNS N08825II (II level nickel-base alloy forging).
Ellipse head 2 adopts two-sided welding with bobbin carriage pipe nipple 3, and bobbin carriage pipe nipple 3 and first tube sheet 5, second tube sheet 20 adopt the single face of argon arc welding bottoming to seal welding, form the nickel-base alloy inner chamber of the no inspection opening of shutting.
First pipe connecting flange 1, second pipe connecting flange 19 adopt the slotting weldering of full penetration to be connected with bobbin carriage, importing and exporting first pipe connecting flange 1 is arranged in axially, sewage draining exit second pipe connecting flange 19 is arranged in the bottom, and erosion control baffle plate 4 is set before the gas access of heat exchanger tube 24, and baffle plate 4 adopts with bobbin carriage and is welded to connect.
Baffle plate 4 adopts the arc plank frame of band disymmetry breach, and the hole on it is adopted circular uniform, and the area summation of hole and breach closely equals but is not higher than the interior circulation area summation of heat exchanger tube.
First pipe connecting flange 1, second pipe connecting flange 19 adopt ring to connect sealing surface.
Heat exchanger tube 24 employing intensity welderings are sticked on account and are connected with first tube sheet 5, second tube sheet 20, and the intensity weldering groove depth that account is sticked in the intensity weldering is 3mm.
Shell side arranges expansion joint 10, and expansion joint (10) adopts 06Cr19Ni10; First tube sheet 5, second tube sheet 20 are at shell side side band convex shoulder, shell-side cylinder adopts butt welding to be connected with first tube sheet 5, second tube sheet 20, deflection plate adopts pull bar, distance sink tube structure to fix, first pull bar 15, second pull bar 18 and first tube sheet 5 are for being threaded, import and export first adapter, 6, first flange 7 and be arranged in both sides, in the middle of sewage draining exit second adapter 22, second flange 23 is arranged in and is bordering on.
The heat treatment that the girth joint of bobbin carriage pipe nipple 3 and ellipse head 2, first tube sheet 5, second tube sheet 20 eliminates stress,
The pressure testing of High Pressure Difference pipe joint detects+twice ammonia seepage+helium mass spectrum leak detection by twice welding+two subsurfaces and guarantees.
The high pressure peracidity natural gas of tube side flows to the rear end bobbin carriage from the front end bobbin carriage, and the shell side medium flows to front end from the rear end, the two media reverse flow, and fully contact forms heat exchange.
The invention has the advantages that:
1, the tube side surface of internal cavity adopts N08825 and 625 (nickel-base alloy overlay cladding), high pressure resistant peracidity natural gas corrosion.
2, the bobbin carriage end cap adopts ellipse head, and bobbin carriage adopts with tube sheet and welds, and forms a chamber of shutting, and does not non-disconnectablely have inspection opening again, leakage point is few, and is safe.
3, bobbin carriage end socket, pipe nipple, tube sheet employing 16Mn forging built-up welding 5mm625 (nickel-base alloy) can satisfy the requirement of strength under the high pressure, can satisfy corrosion-resistant requirement again, and cost reduces greatly.
4, erosion control baffle plate (4) is set, had both prevented the direct erosion heat exchanger tube of natural gas, can prevent that again sulfide is in the accumulation of heat exchanger tube porch, the service life of having improved heat exchanger.
5, first pipe connecting flange 1, second pipe connecting flange 19 adopt ring to connect sealing surface, suitable high pressure peracidity gas, good airproof performance.
6. heat exchanger tube and tube sheet adopt the intensity weldering to stick on account to be connected, both satisfy the pull-off strength that the High Pressure Difference of pipe, shell side produces, and can increase sealing again, prevent that high pressure peracidity natural gas from producing crevice corrosion to tube sheet, and structure is suitable for, and is reasonable.
7, shell side arranges expansion joint, can reduce the stress that pulls of pipe stress that the temperature difference produces and heat exchanger tube and tube sheet, is suitable for the big occasion of the temperature difference.
8, shell-side cylinder and tube sheet adopt welding structure, and good airproof performance satisfies requirement inflammable, explosive, poisonous medium.
9, deflection plate is arranged by the maximum no-support spaning distance that is bordering on standard-required, shell side medium baffling often, and tube side medium and the reverse flow of shell side medium, heat exchange is abundant, the heat exchange efficiency height.
More than invention not only rational in infrastructure, safe, cost is low, high pressure resistant peracidity natural gas corrosion, and has satisfied heat exchange and life expectancy requirement, has realized the simulate live of high pressure peracidity natural gas.
Description of drawings
Fig. 1 is assembling schematic diagram of the present invention.Wherein, first pipe connecting flange 1, ellipse head 2, bobbin carriage pipe nipple 3, baffle plate 4, first tube sheet 5, first are taken over 6, first flange 7, first deflection plate 8, first cylindrical shell 9, expansion joint 10, first distance sink tube 11, second deflection plate 12, second cylindrical shell 13, second distance sink tube 14, first pull bar 15, packing ring 16, nut 17, second pull bar 18, second pipe connecting flange 19, second tube sheet 20, saddle 21, second adapter, 22, second flange 23, heat exchanger tube 24, the 3rd distance sink tube 25, the 4th distance sink tube 26.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is heat exchanger tube and auspicious figure of being connected of tube sheet.
Fig. 4 is the schematic diagram of baffle plate 4.
The specific embodiment
The present invention includes first pipe connecting flange 1, ellipse head 2, bobbin carriage pipe nipple 3, baffle plate 4, first tube sheet 5, first takes over 6, first flange 7, first deflection plate 8, first cylindrical shell 9, expansion joint 10, first distance sink tube 11, second deflection plate 12, second cylindrical shell 13, second distance sink tube 14, first pull bar 15, packing ring 16, nut 17, second pull bar 18, second pipe connecting flange 19, second tube sheet 20, saddle 21, second takes over 22, second flange 23, heat exchanger tube 24, the 3rd distance sink tube 25, the 4th distance sink tube 26.First cylindrical shell 9, expansion joint 10, second cylindrical shell, 13 assembly weldings become shell-side cylinder, shell-side cylinder is burn-on and first is taken over 6, first flange 7, second and take over 22, second flange 23, the shell-side cylinder front end welds mutually with first tube sheet 5, load onto first pull bar 15, second pull bar 18, first distance sink tube 11, second distance sink tube 14, the 3rd distance sink tube 25, the 4th distance sink tube 26, first deflection plate 8, second deflection plate 12, packing ring 16, nut 17 in the shell side side of first tube sheet 5, the shell-side cylinder rear end is welded mutually with second tube sheet 20 and is formed shell side, puts on heat exchanger tube 24; Bobbin carriage before and after first pipe connecting flange 1, ellipse head 2, bobbin carriage pipe nipple 3, baffle plate 4, first tube sheet 5, second pipe connecting flange 19, second tube sheet, 20 assembly weldings become, front and back bobbin carriage and heat exchanger tube 24 are formed tube side; Constitute heat exchanger, heat exchanger saddle 21 support fixation.
Ellipse head 2, bobbin carriage pipe nipple 3, first tube sheet 5, second tube sheet 20 adopt 16Mn IV forging, at inner surface built-up welding 5mm625 (nickel-base alloy), heat exchanger tube 24 adopts UNS N08825 seamless pipe, erosion control baffle plate 4 adopts UNS N08825, first pipe connecting flange 1, second pipe connecting flange 19 adopt UNS N08825IV, and forming inner chamber is the tube side of N08825 material.Bobbin carriage pipe nipple 3 and first tube sheet 5 adopt the weldering of sealing of argon arc welding bottoming, first pipe connecting flange 1 adopts slotting weldering to be connected in the bottom with bobbin carriage at axial, second pipe connecting flange 19, baffle plate 4 is fixing with 3 welding of bobbin carriage pipe nipple, heat exchanger tube 24 is sticked on account and is connected with first tube sheet 5, the 20 employing intensity welderings of second tube sheet, and intensity weldering groove depth is 3mm.
Expansion joint 10 adopts 06Cr19Ni10, first tube sheet 5, second tube sheet 20 is at shell side side band convex shoulder, shell-side cylinder rear end and second tube sheet 20 are the weldering of sealing of argon arc welding bottoming, import and export first and take over 6, first flange 7 adopts forging to be arranged on the two ends of shell side according to the state of medium, second takes over 22, second flange 23 adopts forging to be arranged on shell side according to the state of medium and is bordering on the centre position, first deflection plate 8, second deflection plate 12, first pull bar 15, second pull bar 18, first distance sink tube 11, second distance sink tube 14, the 3rd distance sink tube 25, the 4th distance sink tube 26, packing ring 16, nut 17 forms pull bar, the distance sink tube structure.
The processing of perforate and groove should be adopted the method for machining on bobbin carriage cylindrical shell, the end socket, if adopt the method for cutting, cut edge and groove must adopt mechanical means processing and remove pollution layer, groove face should permeate detection, qualified by the I level of stipulating among the JB/T4730.5-2005, should not beat the embossing seal mark on the nickel-bass alloy material, weld seam does not have outward and beats acnode.The welding of the built-up welding of tube side, butt joint and corner connection weld seam all should be welded by the welding procedure of assessment of conformity, and the inner surface of the Ni-based overlay cladding of tube side, UNS N08825 forging, UNS N08825 heat exchanger tube, welding material and corner connection, banjo fixing butt jointing should carry out the check of intercrystalline corrosion sensitiveness.The heat treatment that the girth joint of bobbin carriage pipe nipple and ellipse head, tube sheet eliminates stress.All A, category-B welding point should carry out 100% ray detection, press the regulation of JB/T4730.2-2005 " bearing device Non-Destructive Testing ", and industrial grade is not less than the AB level, and qualified rank is not less than the II level.Detection should be permeated in the soldering weld seam of the Nickel-based Alloy Welding joint surface of tube side, overlay cladding surface, UNS N08825IV pipe connecting flange and companion flange surface, material surface, the weldering trace surface that reaches after temporary fixed attachment weld such as jig, lacing wire is removed, and is qualified by the I level of stipulating among the JB/T4730.5-2005.Should carry out withstand voltage test by root before the heat exchanger tube poling, the welding point of heat exchanger tube and tube sheet adopts the two pass welding, the first road welding bead permeates detection after all welding finishes, qualified by the I level of stipulating among the JB/T4730.5-2005, it is that 1% compressed air carries out the ammonia leak detection that qualified back contains the ammonia volumetric concentration with 0.7MPa, is qualified with the phenolphthalein reagent nondiscolouring.Weld the second road weld seam after the ammonia leak detection is qualified again, permeate detection according to above-mentioned same requirement after welding is finished, a qualified laggard line pipe account connects.The expand tube shell side that finishes carries out the water pressure test, and the qualified back of the water pressure test is air-dry, carries out the ammonia leak detection with the method that design pressure is same, carries out helium mass spectrum leak detection after the ammonia leak detection is qualified, and leakage rate≤1 * 10-5/Pa.m3//s is qualified.Equipment making finishes, and tube side carries out the water pressure test.The qualified back of the water pressure test is air-dry, and the welding joint surface is permeated detection, and is qualified by the I level of stipulating among the JB/T4730.5-2005, and qualified back tube side carries out air seal test.
After this invention one-hundred-percent inspection was qualified, the high pressure peracidity natural gas of tube side flowed to the rear end bobbin carriage from the front end bobbin carriage, and the shell side medium flows to front end from the rear end, the two media reverse flow, and fully contact forms heat exchange.
Claims (6)
1. a high pressure peracidity natural gas comprises pipe connecting flange, ellipse head, bobbin carriage pipe nipple, baffle plate, tube sheet, adapter, flange, deflection plate, cylindrical shell, expansion joint, distance sink tube, pull bar, packing ring, nut, saddle, heat exchanger tube with the nickel-base alloy heat exchanger of non-disconnectable no inspection opening; It is characterized in that, first cylindrical shell (9), expansion joint (10), second cylindrical shell (13) assembly welding becomes shell-side cylinder, shell-side cylinder is burn-on and first is taken over (6), first flange (7), second takes over (22), second flange (23), the shell-side cylinder front end welds mutually with first tube sheet (5), load onto first pull bar (15) in the shell side side of first tube sheet (5), second pull bar (18), first distance sink tube (11), second distance sink tube (14), the 3rd distance sink tube (25), the 4th distance sink tube (26), first deflection plate (8), second deflection plate (12), packing ring (16), nut (17), the shell-side cylinder rear end is welded mutually with second tube sheet (20) and is formed shell side, puts on heat exchanger tube (24); Bobbin carriage before and after first pipe connecting flange (1), ellipse head (2), bobbin carriage pipe nipple (3), baffle plate (4), first tube sheet (5), second pipe connecting flange (19), second tube sheet (20) assembly welding become, front and back bobbin carriage and heat exchanger tube (24) are formed tube side; Constitute heat exchanger, heat exchanger saddle (21) support fixation;
First pipe connecting flange (1), second pipe connecting flange (19) adopt UNS N08825IV, ellipse head (2), bobbin carriage pipe nipple (3), first tube sheet (5), second tube sheet (20) adopt 16Mn IV at tube side inner surface side built-up welding 5mm625 nickel-base alloy, heat exchanger tube (24) adopts UNS N08825 seamless pipe, and baffle plate (4) adopts UNS N08825 II;
Ellipse head (2) adopts two-sided welding with bobbin carriage pipe nipple (3), and bobbin carriage pipe nipple (3) adopts the single face of argon arc welding bottoming to seal welding with first tube sheet (5), second tube sheet (20), forms the nickel-base alloy inner chamber of the no inspection opening of shutting;
First pipe connecting flange (1), second pipe connecting flange (19) adopt the slotting weldering of full penetration to be connected with bobbin carriage, importing and exporting first pipe connecting flange (1) is arranged in axially, sewage draining exit second pipe connecting flange (19) is arranged in the bottom, erosion control baffle plate (4) is set before the gas access of heat exchanger tube (24), and baffle plate (4) adopts with bobbin carriage and is welded to connect;
Shell side arranges expansion joint (10), and expansion joint (10) adopts 06Cr19Ni10; First tube sheet (5), second tube sheet (20) are at shell side side band convex shoulder, shell-side cylinder is connected for butt welding with first tube sheet (5), with the seal weldering of second tube sheet (20) for the argon arc welding bottoming, deflection plate and heat exchanger tube are that distance sink tube adds Tiebar structure, first pull bar (15), second pull bar (18) and first tube sheet (5) are for being threaded, (6) are taken in import and export first, first flange (7) is arranged in both sides, in the middle of sewage draining exit second adapter (22), second flange (23) are arranged in and are bordering on.
2. heat exchanger according to claim 1 is characterized in that, baffle plate (4) adopts the arc plank frame of band disymmetry breach, and the hole on the baffle plate (4) is adopted circular uniform.
3. heat exchanger according to claim 1 is characterized in that, first pipe connecting flange (1), second pipe connecting flange (19) adopt ring to connect sealing surface.
4. heat exchanger according to claim 1 is characterized in that, the weldering of heat exchanger tube (24) employing intensity is sticked on account and is connected with first tube sheet (5), second tube sheet (20), and the intensity weldering groove depth that account is sticked in the intensity weldering is 3mm.
5. heat exchanger according to claim 1 is characterized in that, the heat treatment that the girth joint of bobbin carriage pipe nipple (3) and ellipse head (2), first tube sheet (5), second tube sheet (20) eliminates stress.
6. heat exchanger according to claim 1 is characterized in that, tube side is used for high pressure peracidity gas medium, and shell side is used for high temperature heat conductive oil or ethylene glycol.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210052025 CN102607301B (en) | 2012-03-01 | 2012-03-01 | Non-detachable access hole-free nickel-base alloy heat exchanger for high-pressure high-acidity natural gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210052025 CN102607301B (en) | 2012-03-01 | 2012-03-01 | Non-detachable access hole-free nickel-base alloy heat exchanger for high-pressure high-acidity natural gas |
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| CN102607301B true CN102607301B (en) | 2013-09-11 |
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| CN102997720B (en) * | 2012-12-12 | 2014-08-13 | 中冶南方(武汉)威仕工业炉有限公司 | Shell-and-tube heat exchanger with free expanded tube pass |
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| CN103968687A (en) * | 2014-05-13 | 2014-08-06 | 苏州新协力特种工业模板有限公司 | Shell-and-tube heat exchanger |
| CN104315887B (en) * | 2014-09-25 | 2016-06-29 | 徐永权 | A kind of heat-exchanger rig based on hydrogen compound |
| CN106017126A (en) * | 2016-07-06 | 2016-10-12 | 张家港市科华化工装备制造有限公司 | Condenser with quick baffle plate assembly and disassembly functions |
| CN106017155A (en) * | 2016-07-07 | 2016-10-12 | 江苏普格机械有限公司 | Chlorine gas intercooler |
| CN106017156A (en) * | 2016-07-07 | 2016-10-12 | 江苏普格机械有限公司 | Chlorine-based intercooler |
| CN106091487A (en) * | 2016-07-22 | 2016-11-09 | 王言明 | A kind of cleanable heat pump heat exchanger |
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| CN109668453A (en) * | 2019-02-16 | 2019-04-23 | 石维涛 | A kind of gas transmission station heat-exchanger rig |
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| US7377039B2 (en) * | 2003-05-29 | 2008-05-27 | Saudi Arabian Oil Company | Anti-corrosion protection for heat exchanger tube sheet and method of manufacture |
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| CN101614495A (en) * | 2009-07-14 | 2009-12-30 | 无锡市彪王化工设备厂 | A kind of combined heat exchange tube shell-and-tube heat exchanger |
| CN101695807A (en) * | 2009-11-06 | 2010-04-21 | 倪加明 | Manufacturing method of dual-tubesheet heat interchanger |
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