CN100362308C - Connection method for tube plate and pipe joint of tube-shell/tube-sheet type heat exchanger - Google Patents
Connection method for tube plate and pipe joint of tube-shell/tube-sheet type heat exchanger Download PDFInfo
- Publication number
- CN100362308C CN100362308C CNB2004100630835A CN200410063083A CN100362308C CN 100362308 C CN100362308 C CN 100362308C CN B2004100630835 A CNB2004100630835 A CN B2004100630835A CN 200410063083 A CN200410063083 A CN 200410063083A CN 100362308 C CN100362308 C CN 100362308C
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- Prior art keywords
- tube
- joint
- heat exchanger
- shell
- soldering
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- Expired - Lifetime
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910000679 solder Inorganic materials 0.000 claims abstract description 23
- 230000004907 flux Effects 0.000 claims abstract description 22
- 238000005476 soldering Methods 0.000 claims abstract description 17
- 230000006698 induction Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000010791 quenching Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims abstract description 4
- 238000005219 brazing Methods 0.000 claims description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 13
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- 239000010949 copper Substances 0.000 abstract description 4
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000280 densification Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001757 vomitory effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The present invention relates to a connection method for a tube plate and a tube joint for a tube-shell or a gilled heat exchanger in various kinetic systems, particularly to a connection method for a tube plate and a tube joint for a tube-shell or a gilled heat exchanger using radiating tube materials of red copper and tube plate materials of low carbon steel. The method comprises the steps: (1) a solder ring is prearranged in a prearranged counter bore at an opening of the tube plate; 2) a proper quantity of soldering flux is sprayed at the tube joint; 3) both the tube plate and the built-in tube joint are placed on a working bench of a medium frequency induction soldering machine tool, a PLC component is used for controlling the two coordinates of the medium frequency induction soldering working bench to fine move for uniformly heating the tube plate and the tube joint until the solder ring and the soldering flux flow after uniformly melted and fill a weld joint; 4) the soldering machine tool automatically sprays cold water to quench soldering flux residues. The present invention has the advantages of relative low investment cost, high material utilization rate, high compactness of a machined heat exchanger and stable quality, and the present invention is suitable for mass production.
Description
Technical field
The present invention relates to shell-and-tube or the tube sheet of pipe type heat exchanger and the method for attachment of joint for pipe in the various active systems, refer to that especially the radiating tube material is that red copper, tube sheet material are the shell-and-tube/tube sheet of pipe type heat exchanger and the method for attachment of joint for pipe of mild steel.
Background of invention
Shell-and-tube/pipe type heat exchanger is owing to its simple in structure and easily manufactured being widely used in the various active systems, and generally the structure of pipe type/shell-and-tube exchanger comprises radiating tube, tube sheet, fin, housing, spoiler, different heat exchange medium Vomitory separately.Being tightly connected between radiating tube and the tubesheet holes makes different heat exchange mediums carry out heat exchange in the separate system of each self-operating.The material of making tube sheet generally speaking is the copper alloy of good heat dispersion performance, aluminium alloy, stainless steel, mild steel etc., and the material of manufacturing radiating tube is the good material of heat dispersion such as copper alloy, aluminium alloy etc.
Be connected with the compactness requirement between pipe type/shell-and-tube exchanger tube sheet and the radiating tube joint, method of attachment commonly used has following several: 1, machinery rises and connects, promptly utilize the tube head that rises to make to be positioned at pipe among the tubesheet holes to produce suitable plastic deformation outer tube surface and tubesheet holes inner surface are fitted tightly, thereby realize sealing effectiveness with better deformation performance.This kind joint is used in the production of cooling tube diameter greater than large batch of shell-and-tube/pipe type heat exchanger of 6 millimeters more, its equipment investment is quite big, its manufactured goods have the joint of compactness that about 10% slip and repair rate height are arranged in actual use, reprocess difficulty, the accuracy of manufacture to parts requires very high, manufacturing cost is also higher, can not satisfy the social now requirement to product manufacturing technology and quality.2, the method for molten solder, promptly adopt multiple melting process to cooperate the associated welds material to make the tube sheet verge of opening produce fusing simultaneously and form the molten bath with the packing material that melts with tube end, solidify the joint that the back forms a densification, this kind method is used for the production occasion of the boiler hot interchanger of high temperature, high pressure, big load more, only be suitable in the small batch production process, meanwhile this kind process does not fit into the tube sheet of xenogenesis material and being connected of radiating tube yet.3, bonding method, utilize suitable process to be equipped with the joint that suitable bonding agent makes it fully reasonably be filled between radiating tube outer surface and the tube sheet perforate inner surface and forms a densification, the method is used for generally also using less in the maintenance or trial-manufacturing process of this type heat exchanger more.4, the method for mechanical connection, adopt the design of suitable pipe tube sheet type of attachment to cooperate with various sealing rings seal nipple of appropriateness distortion formation by sealing ring, also maintenance or the trial-manufacturing process that are used for this type heat exchanger of the method are generally seldom used more.5, furnace brazing method is utilized soldering oven to carry out appropriateness heating in good time and is cooperated suitable pipe tube sheet joint to relate to cooperate suitable solder brazing flux combination, thereby in the method for radiating tube with tube sheet tapping formation tight joint.The produced heat exchanger steady quality cleaning of this kind process is attractive in appearance, but equipment investment is big, production efficiency is lower, energy consumption is bigger, is applicable to the shell-and-tube/pipe type heat exchanger of large-scale production.6, dip brazing, thereby make solder be packed into being connected of formation densification among the slit in tube-to-tube sheet connection hole by in good time insulation and heating or with the pipe-pipe sheet joint that the solder of fusing is cast in the qualified shell-and-tube/pipe type heat exchanger of assembling in the solder that the pipe-pipe sheet joint that is about to assemble qualified shell-and-tube/pipe type heat exchanger immerses fusing and the brazing flux, that this kind method poor working environment, solder brazing flux consume is more, quality is unstable, is applicable in the large batch of heat exchanger production process.7, manual gas brazing, utilize suitable flame to cooperate suitable solder brazing flux combination to make solder be filled in the joint that forms sealing between tube sheet and the radiating tube, this kind explained hereafter environment is poor, efficient is low, quality is unstable, is applicable to the production of the shell-and-tube/pipe type heat exchanger of small lot, many kinds.
Summary of the invention
At radiating tube is red copper; tube sheet be mild steel and the radiating tube diameter less than 6 millimeters situation; the use pipe that rises; molten solder; bonding; mechanical connection; furnace brazing; methods such as manual gas brazing are not because its characteristics separately all fit into the shell-and-tube/pipe type heat exchanger tube sheet of this kind situation and the above-mentioned defective of the prior aries such as production in enormous quantities that the are connected existence of radiating tube joint; the invention provides a kind of method that adopts nitrogen protection high frequency plane eddy-current heating and be used and preset silver-base solder (BAg40CuZnSn) ring and with a small amount of brazing flux (QJ102) shell-and-tube/section of jurisdiction heat exchanger tube sheet-joint for pipe is carried out soldering and be connected, thereby reach raising joint compactness; enhance productivity; energy savings; save brazing flux; improve the product decay resistance; the purpose of improving the quality of products.The technical scheme that solves the problems of the technologies described above employing is: the tube sheet of a kind of follow-on shell-and-tube or pipe type heat exchanger and the method for attachment of joint for pipe, carry out according to the following steps:
1) preseting solder ring presetting in the counterbore in the tube sheet tapping;
2) an amount of brazing flux saturated aqueous solution of spraying is in the joint for pipe position;
3) open nitrogen protection device and blow protection nitrogen to the soldering position;
4) open induction power supply and movable workbench switch, carry out the high frequency brazing operation, evenly melt back flowing until solder ring and brazing flux, and fill up till the weld seam;
5) the soldering lathe sprays cold water automatically with the brazing flux residue of quenching.
Welding method of the present invention, owing to the consumption of preseting solder ring and brazing flux can accurately be controlled, the utilization rate height of material, thereby its manufacturing cost is also relatively low.Adopting the method for nitrogen protection high frequency plane eddy-current heating to be used to preset silver-base solder (BAg40CuZnSn) ring and brazing flux (QJ102) on a small quantity that shell-and-tube/section of jurisdiction heat exchanger tube sheet-joint for pipe is carried out soldering is connected; the feasible heat exchanger compactness height that processes; steady quality; be fit to produce in enormous quantities, especially be fit to radiating tube and be red copper material, tube sheet and be mild steel and radiating tube diameter less than 6 millimeters situation.
Description of drawings
Fig. 1 is the tube sheet of shell-and-tube exchanger and the structural representation of pipe coupling part.
The specific embodiment
Embodiment one:
With reference to Fig. 1, GK91X397-00-00 type shell-and-tube exchanger, tube sheet 7 adopts mild steel to make, on offer one group of longitudinal hole 8, the bottom of described through hole 8 offers guiding counterbore 9 corresponding to inner surface 10 places of tube sheet, the top of described through hole 8 offers weld-ring corresponding to outer surface 1 place of tube sheet and presets counterbore 4, and the joint for pipe part 2 of radiating tube penetrates 8 location in this through hole, carries out according to the following steps then:
1) preset BAg40CuZnSnNi silver-base solder ring 3 in the presetting in the counterbore of tube sheet tapping, the silk footpath of solder ring 3 is 1mm, and solder ring internal diameter is 5.4mm, and the solder annulate shaft is to being of a size of 1mm;
2) an amount of brazing flux saturated aqueous solution of spraying (QJ102) is in the joint for pipe position; Described brazing flux model is QJ102, and composition is: B
2O
335%, KBF
423%, KBF 42%; With brazing flux QJ102 water furnishing saturated aqueous solution;
3) open nitrogen protection device and blow protection nitrogen to the soldering position;
4) open induction power supply and movable workbench switch, two coordinates with PLC element (the solid-state control system that promptly has program capability) control medium frequency inductive brazing platen accurately move, tube sheet and joint for pipe position are evenly heated, evenly melt back flowing until solder ring and brazing flux, and fill up till the weld seam; The soldering heat cycles is lasted 25 seconds, and the soldering induced-current is 30A, and the eccentric throw at workpiece and workbench center is 25mm, and rotating speed of table is 5rpm, induction frequencies 30KHz, and inductor is apart from surface of the work 5mm.
5) the soldering lathe sprays cold water automatically with the brazing flux residue of quenching.
Mark 5 is installed shoulder for lid among the figure, and mark 6 is installed shoulder for housing.
Claims (1)
1. shell-and-tube/the tube sheet of pipe type heat exchanger and the method for attachment of joint for pipe is characterized in that carrying out according to the following steps:
1) preseting solder ring presetting in the counterbore in the tube sheet tapping;
2) an amount of brazing flux saturated aqueous solution of spraying is in the joint for pipe position;
3) open nitrogen protection device and blow protection nitrogen to the soldering position;
4) open induction power supply and movable workbench switch, carry out the high frequency brazing operation, evenly melt back flowing until solder ring and brazing flux, and fill up till the weld seam;
5) the soldering lathe sprays cold water automatically with the brazing flux residue of quenching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100630835A CN100362308C (en) | 2004-07-15 | 2004-07-15 | Connection method for tube plate and pipe joint of tube-shell/tube-sheet type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100630835A CN100362308C (en) | 2004-07-15 | 2004-07-15 | Connection method for tube plate and pipe joint of tube-shell/tube-sheet type heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1629597A CN1629597A (en) | 2005-06-22 |
| CN100362308C true CN100362308C (en) | 2008-01-16 |
Family
ID=34846370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100630835A Expired - Lifetime CN100362308C (en) | 2004-07-15 | 2004-07-15 | Connection method for tube plate and pipe joint of tube-shell/tube-sheet type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100362308C (en) |
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| CN101837495B (en) * | 2009-12-15 | 2012-01-18 | 东莞弘隆金属制品有限公司 | Method for sealing shielding can |
| KR20110071616A (en) * | 2009-12-21 | 2011-06-29 | 삼성전자주식회사 | Heat exchanger, welding members and air conditioner |
| CN102114561B (en) * | 2009-12-31 | 2013-06-05 | 南京理工大学 | Method of pre-copper-plated induction welding-brazing of aluminum-steel stud bolt |
| CN101905362A (en) * | 2010-08-03 | 2010-12-08 | 西安昆仑汽车电子有限公司 | Method for welding thin-wall steel tube and thin steel plate under constant temperature condition |
| CN102423822A (en) * | 2011-09-27 | 2012-04-25 | 中国北车集团大连机车研究所有限公司 | High-frequency induction brazing welding process for aluminum alloy base plate and stainless steel water inlet/outlet pipe |
| DE102012017130B4 (en) * | 2012-09-01 | 2016-06-16 | Man Diesel & Turbo Se | Laser Rohreinschweißen |
| CN103203608A (en) * | 2013-03-23 | 2013-07-17 | 广州有色金属研究院 | Method for improving quality of soldered joint of shell-and-tube type heat exchanger |
| CN104209616B (en) * | 2014-08-05 | 2019-05-31 | 上海思乐得不锈钢制品有限公司 | The welding method of vacuum bottom cover assembly |
| CN104266529A (en) * | 2014-09-24 | 2015-01-07 | 无锡纳润特科技有限公司 | Radiating tube and tube plate connecting structure of tube type heat exchanger |
| CN104723048A (en) * | 2015-01-22 | 2015-06-24 | 新昌县华亿机械有限公司 | Novel welding method for air collecting pipes |
| CN105127532A (en) * | 2015-09-01 | 2015-12-09 | 昂纳信息技术（深圳）有限公司 | Encapsulating method for tube opening of photoelectronic device |
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| CN106001825B (en) * | 2016-07-08 | 2018-03-30 | 中国科学院上海应用物理研究所 | Anticorrosion superalloy pipe tube sheet connection method and heat exchanger |
| CN106181143A (en) * | 2016-07-15 | 2016-12-07 | 浙江金丝通科技股份有限公司 | Welding method for miniature micro-channel heat exchanger |
| CN110328424B (en) * | 2019-05-30 | 2022-04-19 | 北京控制工程研究所 | High-reliability induction brazing welding joint for wire connection and welding method |
| CN111097983B (en) * | 2019-12-23 | 2021-10-01 | 中国航天空气动力技术研究院 | Temperature control switch and preparation method thereof |
| CN111069725A (en) * | 2019-12-25 | 2020-04-28 | 航天海鹰(哈尔滨)钛业有限公司 | Method for manufacturing dense tube heat exchanger |
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| JPH06114545A (en) * | 1992-09-28 | 1994-04-26 | Showa Alum Corp | Brazing method by high-frequency induction heating of metallic material |
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| JPH11209825A (en) * | 1998-01-23 | 1999-08-03 | Toshiba Corp | Post-welding heat treatment equipment |
| CN1089883C (en) * | 1994-09-22 | 2002-08-28 | 大金工业株式会社 | Pipe connecting method and pipe structure |
| CN1375362A (en) * | 2002-04-11 | 2002-10-23 | 中国石化集团洛阳石油化工工程公司 | Manufacture of bimetallic composite pipe |
| CN2600780Y (en) * | 2003-02-25 | 2004-01-21 | 莫祥根 | High-efficient low thermal resistance high-temp soldering finned tube |
-
2004
- 2004-07-15 CN CNB2004100630835A patent/CN100362308C/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1414627A (en) * | 1971-11-26 | 1975-11-19 | Int Research & Dev Co Ltd | Internal welding of a cylindrical tubular member to another member |
| CN1006046B (en) * | 1987-10-20 | 1989-12-13 | 国家机械工业委员会上海材料研究所 | Brazing material and brazing flux for air heat exchanger |
| JPH06114545A (en) * | 1992-09-28 | 1994-04-26 | Showa Alum Corp | Brazing method by high-frequency induction heating of metallic material |
| CN1089883C (en) * | 1994-09-22 | 2002-08-28 | 大金工业株式会社 | Pipe connecting method and pipe structure |
| CN2273634Y (en) * | 1996-09-11 | 1998-02-04 | 中国石油天然气总公司工程技术研究院 | Solder ring used for induction soldering pipeline |
| JPH11209825A (en) * | 1998-01-23 | 1999-08-03 | Toshiba Corp | Post-welding heat treatment equipment |
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| CN2600780Y (en) * | 2003-02-25 | 2004-01-21 | 莫祥根 | High-efficient low thermal resistance high-temp soldering finned tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1629597A (en) | 2005-06-22 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A connection method between tube sheet and tube joint of shell and tube / segment heat exchanger Effective date of registration: 20210610 Granted publication date: 20080116 Pledgee: Bank of China Limited by Share Ltd. Tiantai County branch Pledgor: ZHEJIANG YINLUN MACHINERY Co.,Ltd. Registration number: Y2021330000510 |
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Date of cancellation: 20220627 Granted publication date: 20080116 Pledgee: Bank of China Limited by Share Ltd. Tiantai County branch Pledgor: ZHEJIANG YINLUN MACHINERY Co.,Ltd. Registration number: Y2021330000510 |
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Granted publication date: 20080116 |