CN2586126Y - Corrosion resistance air cooler - Google Patents
Corrosion resistance air cooler Download PDFInfo
- Publication number
- CN2586126Y CN2586126Y CN 02290369 CN02290369U CN2586126Y CN 2586126 Y CN2586126 Y CN 2586126Y CN 02290369 CN02290369 CN 02290369 CN 02290369 U CN02290369 U CN 02290369U CN 2586126 Y CN2586126 Y CN 2586126Y
- Authority
- CN
- China
- Prior art keywords
- tube
- heat exchanger
- air cooler
- exchanger tube
- corrosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a corrosion resistant air cooler used for the petrochemical industry, the electric power industry, the metallurgy industry, etc. The corrosion resistant air cooler is mainly used for solving the problems of easy initiation of corrosion in the existing air cooler with tube bundles of carbon steel heat exchange tubes, and higher cost of the existing air cooler with tube bundles of heat exchange tubes made of corrosion resistant alloy material. The corrosion resistant air cooler of the utility model comprises heat exchange tubes (1), a tube box (3) and tube plate (2), wherein, the heat exchanging tubes (1) is composed of a base tube (11) positioned on an outer layer and corrosion resistant alloy lining tube (12) positioned on an inner layer, and the tube plate (2) is composed of a base plate (21) and a corrosion resistant alloy double layer (22); the end parts of the heat exchange tubes (1) are connected with the tube plate (2). By adopting two kinds of structures that the end parts of the inner lining tubes (12) of the heat exchange tubes are hermetically welded with the double-layer (22) of the tube plate, the occurrence of corrosion in the connecting position of the tube plate and the tube bundles of the heat exchange tubes is eliminated. The utility model is mainly used as an air cooler of media which contains corrosive in the petrochemical industry, etc.
Description
Technical field
The utility model relates to a kind of corrosion-resistant air cooler that is used for industries such as petrochemical industry, electric power, metallurgy.
Background technology
In industries such as petrochemical industry, electric power, metallurgy, use air cooler in a large number as heat transmission equipment.In the middle of the use of air cooler, the medium that is cooled (medium in the air cooler tube bundle) often has certain corrosivity.For example, the air cooler normal in oil plant, that use at vacuum distillation tower cat head position contains H in the oil gas that is cooled
2S, Cl
-, H
2O etc. corrode thing; Air cooler adopts carbon steel to make the heat exchanger tube tube bank usually, at H
2S-Cl
--H
2Under the corrosive environments such as O, the heat exchanger tube tube bank tends to very serious corrosion takes place, and makes its life cycle very short, even surpasses 1 year (referring to " crude oil desalting is anticorrosion with distillation " of Sinopec publishing house publication in 1992, the 68th～72 page).When processing crude oil with poor quality and sour crude oil, this problem shows more outstandingly.Air cooler needs the frequent heat exchanger tube tube bank of changing, and has seriously restricted ordinary production.Adopt " one takes off three notes " (be desalination, annotate corrosion inhibiter, annotate ammonia, water filling), Ni-P chemical plating, be coated with various anticorrosive measures such as organic coating at the heat exchanger tube inner surface, exist various problems, can not solve above-mentioned etching problem well and satisfy instructions for use fully.For solving the existing etching problem of carbon steel tube bank air cooler, some air coolers adopt anti-corrosive alloy material (for example two phase stainless steel, titanium alloy, monel metal etc.) to make air cooler tube bundle (referring to " petrochemical industry corrosion and protection " magazine, the 4th phase of nineteen ninety-five, " improving the service life of air cooler " literary composition).But when making the heat exchanger tube tube bank with these anti-corrosive alloy materials, the cost of air cooler will improve greatly, make enterprise be difficult to bear.
Summary of the invention
Technical problem to be solved in the utility model is: existing carbon steel heat exchanger tube tube bank air cooler is easy to take place corrosion and existing anti-corrosive alloy material heat exchanger tube tube bank air cooler cost problem of higher.
For addressing the above problem, the utility model adopts following two kinds of technical schemes:
Scheme one: a kind of corrosion-resistant air cooler, comprise heat exchanger tube, bobbin carriage and tube sheet, heat exchanger tube links to each other with tube sheet, it is characterized in that: described heat exchanger tube is formed with the corrosion resisting alloy internal lining pipe that is positioned at internal layer by being positioned at outer field parent tube, tube sheet is become with the corrosion resisting alloy coset by substrate, multiple layer is positioned at the side of tube sheet towards bobbin carriage, the internal lining pipe of heat exchanger tube stretches into the surface that bobbin carriage and flange are adjacent to multiple layer from the end of heat exchanger tube, be provided with seal-weld along the outer end of internal lining pipe turnup structure and the circular slit between the clad surface.
Scheme two: a kind of corrosion-resistant air cooler, comprise heat exchanger tube, bobbin carriage and tube sheet, heat exchanger tube links to each other with tube sheet, it is characterized in that: described heat exchanger tube is formed with the corrosion resisting alloy internal lining pipe that is positioned at internal layer by being positioned at outer field parent tube, tube sheet is become with the corrosion resisting alloy coset by substrate, multiple layer is positioned at the side of tube sheet towards bobbin carriage, outer surface around the internal lining pipe that stretches out from the end of heat exchanger tube on the surface of multiple layer has a toroidal cavity, be provided with corrosion resisting alloy in the toroidal cavity and fill annulus, the external cylindrical surface and the tube sheet of filling annulus form two circular slits respectively between the layer and between the outer surface of the inner cylinder face of filling annulus and internal lining pipe again on the plane at clad surface place, be respectively equipped with seal-weld along these two circular slits.
Scheme one has identical specified features with scheme two, and promptly heat exchanger tube is formed with the corrosion resisting alloy internal lining pipe that is positioned at internal layer by being positioned at outer field parent tube, and tube sheet is become with the corrosion resisting alloy coset by substrate.Only the heat exchanger tube end with adopted two kinds of structures that the end of heat exchanger tube internal lining pipe and the multiple layer of tube sheet are connected with seal-weld being connected of tube sheet, and formed two different technical schemes.
Adopt the utility model, have following beneficial effect: at first, the heat exchanger tube of the utility model air cooler is made up of the corrosion resisting alloy internal lining pipe that is positioned at outer field parent tube (being generally carbon steel material) and is positioned at internal layer.Outer field carbon steel parent tube makes heat exchanger tube can satisfy certain bearing requirements.The internal lining pipe of internal layer is anti-corrosive alloy material (for example two phase stainless steel, titanium alloy, a monel metal etc.), and corrosive medium is had good resistance to corrosion; The requirement that this just can satisfy the corrosion resistance of exchange heat pipe alleviates the problem that existing carbon steel heat exchanger tube tube bank air cooler is easy to corrode greatly, prolongs its service life.For example, be that the heat exchanger tube tube bank air cooler of titanium alloy (TA2) material is used for oil plant air-distillation column overhead with internal lining pipe, its corrosion resistance is much better than carbon steel tube bank air cooler.The corrosion resistance test result who sees table (the material corrosion rate is millimeter/year):
| Corrosive environment | Titanium alloy (TA2) | Carbon steel (No. 20 carbon steels) |
| H 2S:30～40 mg/litre Cl -: 300 mg/litre temperature: 90 ℃ of pH values: 6.5 | 0.02 | 3.4682 |
| H 2S:200 mg/litre Cl -: 1000 mg/litre temperature: 95 ℃ of pH values: 1.74 | 0.0026 | 22.354 |
Secondly, more existing corrosion-resistant air coolers, its heat exchanger tube adopt anti-corrosive alloy material (for example two phase stainless steel, titanium alloy, monel metal etc.) manufacturing fully, so the large usage quantity of anti-corrosive alloy material.Because costing an arm and a leg of anti-corrosive alloy material causes the cost of air cooler higher.And the utility model air cooler, the corrosion resisting alloy internal lining pipe of its heat exchanger tube is thinner, generally has only 0.5 millimeter to 0.8 millimeter, so the consumption of anti-corrosive alloy material is less, and then the cost of air cooler is reduced greatly.An air cooler using of oil plant air-distillation column overhead for example, the heat exchanger tube pipe range is 9 meters, totally 184, is divided into 4 layers of layout.If heat exchanger tube is used titanium alloy (TA2) manufacturing (the pipe diameter is that 25 millimeters of Φ, wall thickness are 1.5 millimeters) fully, only one of corrosion resisting alloy raw material are pressed present price just needs 16.5 ten thousand yuan.And employing the utility model, the heat exchanger tube parent tube is No. 10 carbon steels (the pipe diameter is that 25 millimeters of Φ, wall thickness are 2.5 millimeters), and internal lining pipe is the titanium alloy (TA2) of 0.5 millimeters thick, and heat exchanger tube raw material (carbon steel parent tube and corrosion resisting alloy internal lining pipe) only need 4.6 ten thousand yuan.So economic benefit of the present utility model is very remarkable.
The 3rd, the utility model air cooler, tube sheet is become with the corrosion resisting alloy coset by substrate, can prevent effectively that medium is to the corrosion of tube sheet in the bobbin carriage.The air cooler heat exchange pipe tube bank is extremely important with the connected mode of tube sheet, because in actual applications, the corrosion of tube sheet and heat exchanger tube tube bank junction is the strongest.For this reason, the utility model has adopted with seal-weld multiple layer of two kinds of structure that is connected in end and tube sheet with the heat exchanger tube internal lining pipe, can prevent effectively that the medium that is cooled that bobbin carriage contains the corrosion thing from flowing into the slit between heat exchanger tube parent tube and the tube sheet, eliminate the generation that corrode tube sheet and heat exchanger tube tube bank junction.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is the schematic diagram of a kind of syndeton of the structure of the utility model air cooler heat exchange pipe and tube sheet and heat exchanger tube end and tube sheet.
Fig. 2 is the I portion profile among Fig. 1.
Fig. 3 is the schematic diagram of the another kind of syndeton of the utility model air cooler heat exchange pipe end and tube sheet.
Fig. 4 is the II portion profile among Fig. 3.
The specific embodiment
As shown in Figure 1, be the schematic diagram of a kind of syndeton of the structure of the utility model air cooler heat exchange pipe and tube sheet and heat exchanger tube end and tube sheet.Air cooler contains many heat exchanger tubes and forms heat-exchanging tube bundle, and this figure only schematically draws a heat exchanger tube and illustrated.Fig. 2 is the I portion profile among Fig. 1, has shown the syndeton of heat exchanger tube end and tube sheet in more detail.This corrosion-resistant air cooler of the present utility model comprises heat exchanger tube 1, bobbin carriage 3 and tube sheet 2, heat exchanger tube 1 link to each other with tube sheet 2 (generally adopting the intensity expanded joint to connect).Described heat exchanger tube 1 is formed with the corrosion resisting alloy internal lining pipe 12 that is positioned at internal layer by being positioned at outer field parent tube 11.The material of parent tube 11 is generally carbon steel (for example No. 10, No. 20 carbon steels), and internal lining pipe 12 is anti-corrosive alloy material (for example two phase stainless steel, titanium alloy, a monel metal etc.).The thickness of internal lining pipe 12 is generally 0.5 millimeter to 0.8 millimeter.Can adopt the method for present industrial maturation internal lining pipe to be lining in the inner surface of parent tube.
The internal lining pipe 12 of heat exchanger tube 1 stretches into the surface that bobbin carriage 3 and flange are adjacent to multiple layer 22 from the end of heat exchanger tube 1, impose seal-weld 4 along the outer end of internal lining pipe 12 turnup structures and circular slit between multiple layer 22 surface again.
The outer surface of heat exchanger tube parent tube 11 generally adds fin 6, to improve the heat exchange effect.Can adopt industrial various types of fins commonly used, as the fastening fin of tension force, the fastening L shaped fin of tension force and bimetallic integral body rolled fin etc.
Fig. 3 and Fig. 4 show the another kind of syndeton of the utility model air cooler heat exchange pipe end and tube sheet.Referring to Fig. 3 and Fig. 4, on the surface of the multiple layer 22 of tube sheet, the outer surface that centers on the internal lining pipe 12 that stretches out from the end of heat exchanger tube 1 has a toroidal cavity.Toroidal cavity as shown in the figure, by the outer surface of the end face of heat exchanger tube parent tube 11 pipe ends, one section internal lining pipe 12 stretching out from the end of heat exchanger tube 1 and the multiple layer of tube sheet 22 upper edge heat exchanger tube axially and the one section cylindrical surface that extends is constituted; Its section is a rectangle.Be provided with corrosion resisting alloy in the toroidal cavity and fill annulus 5.Filling annulus 5 is anti-corrosive alloy material (for example two phase stainless steel, titanium alloy, monel metal etc.).On the plane at multiple layer 22 surperficial place, form two circular slits respectively between the multiple layer 22 of the external cylindrical surface of filling annulus 5 and tube sheet and between the outer surface of the inner cylinder face of filling annulus 5 and internal lining pipe 12, impose seal-weld 4 respectively along these two circular slits.
Fig. 3 compares with air cooler illustrated in figures 1 and 2 with air cooler shown in Figure 4, and its difference only is the syndeton difference between the multiple layer of heat exchanger tube end liners tube and tube plate; Used all identical (among Fig. 2, Fig. 3 and Fig. 4, all unaccounted Reference numerals are all identical with Fig. 1) such as anti-corrosive alloy materials of the multiple layer of all the other structures, heat exchanger tube internal lining pipe and tube sheet as heat exchanger tube and tube sheet.Adopt above-mentioned with the end and the multiple layer of the tube sheet 22 two kinds of structure that is connected of seal-weld with heat exchanger tube internal lining pipe 12, can prevent effectively that all the medium that is cooled that bobbin carriage contains the corrosion thing from flowing into the slit between heat exchanger tube parent tube and the tube sheet, eliminate the generation that corrode tube sheet and heat exchanger tube tube bank junction.
Corrosion-resistant air cooler of the present utility model, the operating pressure in its heat exchanger tube tube bank is generally 0.1MPa to 1.6MPa, and the temperature of the medium that is cooled in the tube bank generally is up to 200 ℃.
Corrosion-resistant air cooler of the present utility model, the internal lining pipe of its heat exchanger tube, the multiple layer of tube sheet and the identical anti-corrosive alloy material of the general employing of filling annulus; Should be chosen according to different corrosive environments and concrete operational circumstances.
The utility model can be widely used in industries such as petrochemical industry, electric power, metallurgy, as the aerial cooler that contains the medium that corrodes thing.
Claims (2)
1, a kind of corrosion-resistant air cooler, comprise heat exchanger tube (1), bobbin carriage (3) and tube sheet (2), heat exchanger tube (1) links to each other with tube sheet (2), it is characterized in that: described heat exchanger tube (1) is made up of the corrosion resisting alloy internal lining pipe (12) that is positioned at outer field parent tube (11) and is positioned at internal layer, tube sheet (2) is made up of substrate (21) and the multiple layer of corrosion resisting alloy (22), multiple layer (22) is positioned at the side of tube sheet (2) towards bobbin carriage (3), the internal lining pipe (12) of heat exchanger tube (1) stretches into the surface that bobbin carriage (3) and flange are adjacent to multiple layer (22) from the end of heat exchanger tube (1), be provided with seal-weld (4) along the outer end of internal lining pipe (12) turnup structure and the circular slit between multiple layer (22) surface.
2, a kind of corrosion-resistant air cooler, comprise heat exchanger tube (1), bobbin carriage (3) and tube sheet (2), heat exchanger tube (1) links to each other with tube sheet (2), it is characterized in that: described heat exchanger tube (1) is made up of the corrosion resisting alloy internal lining pipe (12) that is positioned at outer field parent tube (11) and is positioned at internal layer, tube sheet (2) is made up of substrate (21) and the multiple layer of corrosion resisting alloy (22), multiple layer (22) is positioned at the side of tube sheet (2) towards bobbin carriage (3), outer surface around the internal lining pipe (12) that stretches out from the end of heat exchanger tube (1) on the surface of multiple layer (22) has a toroidal cavity, be provided with corrosion resisting alloy in the toroidal cavity and fill annulus (5), on the plane at multiple layer (22) surperficial place, form two circular slits respectively between the multiple layer of the external cylindrical surface of filling annulus (5) and tube sheet (22) and between the outer surface of the inner cylinder face of filling annulus (5) and internal lining pipe (12), be respectively equipped with seal-weld (4) along these two circular slits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02290369 CN2586126Y (en) | 2002-12-10 | 2002-12-10 | Corrosion resistance air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02290369 CN2586126Y (en) | 2002-12-10 | 2002-12-10 | Corrosion resistance air cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2586126Y true CN2586126Y (en) | 2003-11-12 |
Family
ID=33749614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02290369 Expired - Lifetime CN2586126Y (en) | 2002-12-10 | 2002-12-10 | Corrosion resistance air cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2586126Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513712A (en) * | 2011-12-06 | 2012-06-27 | 南京宝泰特种材料股份有限公司 | Manufacturing method for tantalum composite board equipment |
| CN103105092A (en) * | 2013-02-20 | 2013-05-15 | 安徽天祥空调科技有限公司 | Whole braze welding all-aluminum module radiator |
| CN105674774A (en) * | 2016-01-29 | 2016-06-15 | 浙江东氟塑料科技有限公司 | Smoke-smoke heat exchanger |
| CN111811160A (en) * | 2020-07-01 | 2020-10-23 | 同方节能装备有限公司 | Anticorrosion structure of lithium bromide unit water system |
-
2002
- 2002-12-10 CN CN 02290369 patent/CN2586126Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513712A (en) * | 2011-12-06 | 2012-06-27 | 南京宝泰特种材料股份有限公司 | Manufacturing method for tantalum composite board equipment |
| CN103105092A (en) * | 2013-02-20 | 2013-05-15 | 安徽天祥空调科技有限公司 | Whole braze welding all-aluminum module radiator |
| CN103105092B (en) * | 2013-02-20 | 2014-03-26 | 安徽天祥空调科技有限公司 | Whole braze welding all-aluminum module radiator |
| CN105674774A (en) * | 2016-01-29 | 2016-06-15 | 浙江东氟塑料科技有限公司 | Smoke-smoke heat exchanger |
| CN111811160A (en) * | 2020-07-01 | 2020-10-23 | 同方节能装备有限公司 | Anticorrosion structure of lithium bromide unit water system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2876686Y (en) | Quarter ellipse spiral baffle shell-and-tube heat exchanger | |
| CN101354218B (en) | Detachable type high-efficiency casing heat exchanger | |
| CN201954990U (en) | Plate type heat exchanger | |
| CN2586126Y (en) | Corrosion resistance air cooler | |
| CN102278907A (en) | External-convex-type asymmetrical wave node pipe heat exchanger | |
| CN201740432U (en) | Ni-P coating heat exchanger | |
| CN2901221Y (en) | Shell-and-tube heat exchanger for corrosive medium | |
| CN116447897A (en) | Spiral coil type heat exchanger with inner fins and outer fins | |
| CN2354005Y (en) | Safety directly-buried type expansion section of metal corrugated pipe | |
| CN202182658U (en) | Self-supporting shell and tube heat exchanger suitable for overall galvanizing anticorrosion | |
| CN2869735Y (en) | Finned-tube air cooling device | |
| CN201152708Y (en) | Corrosion and high pressure resistant tube-shell type heat exchanger | |
| CN2769813Y (en) | U-shape pipe type heat exchanger | |
| CN201449185U (en) | Spiral baffle plate heat exchanger of aluminized carbon steel and aluminum | |
| CN201066019Y (en) | High polymer composite corrugated expansion joint | |
| CN2608932Y (en) | Connection structure of heat-exchanging pipe and pipe plate | |
| CN2597932Y (en) | Spiral deflection pipe-plate case type heat exchanger with central pipe | |
| CN212747427U (en) | Compact micro-channel heat pipe exchanger | |
| CN2572327Y (en) | Carbon steel, aluminium and polybdenum coadmixture heat-exchanger | |
| CN201463665U (en) | Carbon steel titanizing-aluminizing heat exchanger | |
| CN202109789U (en) | Heat exchange device using elliptic spiral heat exchange pipes | |
| CN2534546Y (en) | Whole-welding plate type heat exchanger | |
| CN201837301U (en) | Sherardizing and flexible engineering urushiol phthalein anticorrosion coating | |
| CN2594755Y (en) | Alloy steel hot pipe heat exchanger against hydrogen sulfide corrosion | |
| CN200968804Y (en) | Overpressure resistant tubulation heat converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121210 Granted publication date: 20031112 |