CN203595433U - Novel fixed tube-sheet exchanger - Google Patents
Novel fixed tube-sheet exchanger Download PDFInfo
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- CN203595433U CN203595433U CN201320807053.5U CN201320807053U CN203595433U CN 203595433 U CN203595433 U CN 203595433U CN 201320807053 U CN201320807053 U CN 201320807053U CN 203595433 U CN203595433 U CN 203595433U
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Abstract
Provided is a novel fixed tube-sheet exchanger. According to the novel fixed tube-sheet exchanger, the opposite end faces of tube box flanges and tube sheet flanges are matched in a sealed mode through trapezoidal grooves and trapezoidal bosses; baffle plates are respectively in a D shape, the radial length of the omitted portion of each baffle plate is 1/4-1/3 of the inner diameter of a shell, and the distance between every two adjacent baffle plates is 0.25-0.4 time the inner diameter of the shell; sealing achieved through the trapezoidal grooves can effectively avoid the situation that tube-side media are leaked to cause environmental pollution; by means of the structures of the baffle plates and the distances between the baffle plates, flowing speed of fluid media in a shell side can be further increased, the turbulence degree of the fluid is increased, and the heat exchange effect is improved. In addition, an LX-03 coating structure can improve corrosion resistance and washout resistance, economic loss caused by maintenance and replacement is lowered, and meanwhile resources are saved.
Description
Technical field
The utility model relates to heat exchanger, is specially a kind of novel fixed tube-sheet exchanger, belongs to the technical field of cold exchange device.
Background technology
Fixed tube-sheet exchanger is made up of two ends tube sheet, heat-transfer pipe and housing etc.Because it is simple in structure, use more extensive.Fixed tube-sheet exchanger is a kind of energy-saving equipment that between material, heat transmits of realizing, and is a kind of process equipment of generally applying in industries such as oil, chemical industry, petrochemical industry, metallurgy, electric power, light industry, food.In oil refining, chemical plant installations, heat exchanger accounts for 40% left and right of total number of devices, accounts for the 30%-45% of gross investment.Along with the development of power-saving technology, application constantly expands in recent years, utilizes heat exchanger to carry out high temperature and low temperature heat energy and reclaims and brought significant economic benefit.
The design feature of fixed tube-sheet exchanger is that heat-transfer pipe is set in housing, and heat-transfer pipe two ends are fixed on tube sheet with welding or the method for expanded joint, the tube sheet at housing two ends directly and housing weld together.The import and export of shell side are taken over and are directly welded on housing.The cover flange bolted of tube sheet excircle and bobbin carriage.The import and export of tube side take over directly and bobbin carriage end socket welded together, housing interior according to the length horizontally set of heat-transfer pipe some deflection plates.This heat exchanger tube pass can also be in bobbin carriage end socket the multiple pass partitions of horizontally set.
The shortcoming of this kind of heat exchanger existence is: the fluid that flows through different temperatures in heat exchanger tube pass and shell side, and shell side inner fluid temperature is 150 ℃ of left and right, tube side inner fluid temperature is in the time of 80 ℃ of left and right, easily produce large thermal force, make bobbin carriage end socket and tube sheet flange connections produce the leakage of tube side fluid, cause environmental pollution; At present, the corrosion resistance of this kind of heat exchanger mainly relies on material itself, and not only anti-corrosion effects is limited for it, and this kind of anticorrosion means also exist welding procedure complexity, comparison difficulty, and expensive, be unfavorable for promoting, in addition, after heat-transfer pipe corrosion, can together scrap together with housing, cause the wasting of resources.
Utility model content
In order to overcome leakage and the not good problem of anti-corrosion effects of above-mentioned existence, the utility model provides a kind of novel fixed tube-sheet exchanger, and the corrosion resistance of the connection sealing energy of its tube sheet and bobbin carriage and tube side, shell side all has very big improvement.
The technical scheme that the utility model taked is for achieving the above object: a kind of novel fixed tube-sheet exchanger, comprise housing, heat-transfer pipe, bobbin carriage, deflection plate and expansion joint, arrangement of baffles is in housing, and bobbin carriage is connected with the tube sheet flange being welded on the tube sheet at housing two ends by channel flange; The trapezoidal groove of establishing ring-type at channel flange on an end face of tube sheet flange is provided with annular seal ring in described trapezoidal groove; Corresponding with described trapezoidal groove, on tube sheet flange, establish the trapezoid boss of ring-type.
Further, described deflection plate is that disc-shaped structure cuts a part, and the radical length that is D font and its broken partial section is 1/4 to 1/3 of housing internal diameter, and the spacing between adjacent two deflection plates is 0.25 to 0.4 times of housing internal diameter.
Further, at tube side and shell-side face coating LX-03 corrosion-inhibiting coating respectively.
Further, comprise two-layer primer coating and four aspect lacquer coats at the LX-03 of shell-side face coating corrosion-inhibiting coating; LX-03 corrosion-inhibiting coating in tube side surface coating comprises two-layer primer coating and three aspect lacquer coats.
Further, be 150-250 μ m in the gross thickness of the coating of the LX-03 of shell-side face coating corrosion-inhibiting coating; Gross thickness at the LX-03 corrosion-inhibiting coating of tube side surface coating is greater than 150 μ m.
By the trapezoidal groove and the trapezoid boss that cooperatively interact in the counterface setting of channel flange and tube sheet flange respectively, and sealing ring is set in trapezoidal groove, strengthen the sealing effectiveness that channel flange is connected with tube sheet flange, can effectively avoid the seepage of tube side medium under high temperature difference, and reveal the problem of environmental pollution causing.Can further strengthen the flow velocity of shell side inner fluid medium to the setting of baffle arrangement and spacing, the turbulent extent of enhance fluid, improves heat transfer effect.
LX-03 coating is take epoxy resin and specific amino resin as base-material, adds appropriate various antirust, anticorrosion, heat conduction pigment, filler, auxiliary agent and solvent configuration to form, and resin at high temperature can crosslinking curing film forming.There is extremely strong adhesive force, and paint film light, pliable and tough, fine and close, hard; There is excellent shielding, impervious, rustless property; There is the performance such as excellent heatproof, water-fast, the resistance to water for industrial use that contains Korrosionsmedium; There is good scale inhibition performance and conductivity of heat; There is the performances such as good thermostable acid, highly basic, organic solvent.
LX-03 corrosion-inhibiting coating is anticorrosion for petrochemical industry unit's heat exchanger, by adopting the tube chamber of the corrosion-inhibiting coating that epoxy resin and specific amino resin are base-material, can greatly improve corrosion-resistant, the flushing resistance of heat exchanger, effectively improve the service life of heat exchanger, reduce the industrial application cost of heat exchanger, significantly reduced because the reasons such as maintenance and replacing cause economic loss, enhance productivity, and reduce the environmental pollution that causes due to heat exchanger leakage etc., there is good social benefit.
The corrosion-inhibiting coating of tube side and shell side is taked to differentiation structure, make corrosion-inhibiting coating corresponding with corresponding medium character, both taken into account Cost Problems, also make scrapping, changing and synchronize of tube side and shell side housing, realize to greatest extent making full use of of resource.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of deflection plate;
In figure: 1 housing, 11 tube sheet flanges, 2 heat-transfer pipes, 3 bobbin carriages, 31 channel flanges, 4 deflection plates, 5 expansion joints, 6 trapezoidal grooves, 7 trapezoid boss.
The specific embodiment
For convenience of explanation, understand technology contents of the present utility model, below in conjunction with accompanying drawing, the utility model is described in further detail.
The novel fixed tube-sheet exchanger of one as shown in Figure 1, it comprises housing 1, heat-transfer pipe 2, bobbin carriage 3, deflection plate 4 and expansion joint 5.Described bobbin carriage 3 is connected with the tube sheet flange 11 being welded on the tube sheet at housing 1 two ends by channel flange 31; The trapezoidal groove 6 of establishing ring-type at channel flange 31 on an end face of tube sheet flange 11 is provided with annular seal ring in described trapezoidal groove 6; Corresponding with described trapezoidal groove 6, on tube sheet flange 11, establish the trapezoid boss 7 of ring-type.
Described deflection plate 4 is arranged in described housing 1, as shown in Figure 2, described deflection plate 4 cuts a part for disc-shaped structure, and the radical length that is D font and its broken partial section is 1/4 to 1/3 of housing internal diameter, and setting distributes alternately on the incompleteness end above-below direction of adjacent two deflection plates 4, be the incompleteness end of a certain deflection plate 4 upwards, the incompleteness end of the deflection plate 4 being adjacent is downward, the like.Meanwhile, the spacing between adjacent two deflection plates is 0.25 to 0.4 times of housing internal diameter.Can further strengthen the flow velocity of shell side inner fluid medium to the setting of deflection plate 4 structures and spacing, the turbulent extent of enhance fluid, improves heat transfer effect.
In the related heat exchanger shell pass of the utility model, the temperature of medium is greater than medium in tube side, is particularly suitable for walking high temperature oil, air-flow body medium or high-temperature acid, alkaline solution in shell side, walks the situation of recirculated cooling water in tube side.So in order to strengthen antiseptic property, at shell-side face coating LX-03 corrosion-inhibiting coating, this LX-03 corrosion-inhibiting coating comprises two-layer primer coating and four aspect lacquer coats, and the gross thickness of the coating of this LX-03 corrosion-inhibiting coating is 150-250 μ m;
At tube side surface coating LX-03 corrosion-inhibiting coating, this LX-03 corrosion-inhibiting coating comprises two-layer primer coating and three aspect lacquer coats, and the gross thickness of the coating of this LX-03 corrosion-inhibiting coating is for being greater than 150 μ m.
The tube side surface of heat exchanger comprises bobbin carriage 3 inner surfaces (also comprising the surface of the pass partition arranging in it), heat-transfer pipe 2 inner surfaces, raise the nose above water to breathe the surface of 7 inner surfaces etc. and tube side medium contact.The shell-side face of heat exchanger comprises the surface of housing 2 inner surfaces, heat-transfer pipe 3 outer surfaces, deflection plate 4 outer surfaces of heat exchanger etc. and shell side medium contact.
Tube side surface comprises the surface of bobbin carriage 3 inner surfaces (also comprising the surface of the pass partition arranging in it), heat-transfer pipe 2 inner surfaces etc. and tube side medium contact; Shell-side face comprises the surface of housing 1 inner surface, heat-transfer pipe 2 outer surfaces, deflection plate 4 outer surfaces of heat exchanger etc. and shell side medium contact.
LX-03 anticorrosive paint is existing coating variety, and its main component (by mass percent) is: epoxy resin: 40.6%; Butyl alcohol etherified melamine-formaldehyde resin: 15.5%; Iron oxide red: 13.5%; Chrome green: 6.3%; Talcum powder: 5.6%; Aluminium powder: 15%; Zinc oxide: 3.5%; Mixed solvent: 4% etc.Be take epoxy resin and specific amino resin as base-material, add appropriate various antirust, anticorrosion,
Heat conduction pigment, filler, auxiliary agent and solvent configuration form, and resin at high temperature can crosslinking curing film forming.
The feature of this coating comprises:
(1) there is extremely strong adhesive force, and paint film light, pliable and tough, fine and close, hard;
(2) there is excellent shielding, impervious, rustless property;
(3) there is the performance such as excellent heatproof, water-fast, the resistance to water for industrial use that contains Korrosionsmedium;
(4) there is good scale inhibition performance and conductivity of heat;
(5) there is the performances such as good thermostable acid, highly basic, organic solvent.
LX-03 corrosion-inhibiting coating has good resistance to water, and in the lower use of higher temperature (150 ℃), sea water resistance, salt water, brackish water, industrial circulate water etc., meet the specific (special) requirements of heat exchanger completely; There is resistant to corrosive media and water for industrial use performance and good scale-inhibiting properties and thermal conductivity.Can prevent CaCO in recirculated cooling water
3sclerosis, be difficult for forming hard thing and hang on tube wall, make impurity, oxide layer following current and mistake; The paint film of this coating is hard smooth, is difficult for Adsorption And Retention thing and incrustation scale, and a small amount of attachment water punching is fallen, and reach more than ten years service time, and within the use runtime, coated pipe heat transfer coefficient, apparently higher than without coated pipe, has improved total heat transfer effect.
LX-03 corrosion-inhibiting coating, also to weak acid and alkaline medium, has good anti-corrosion, scale-inhibiting effect.Because LX-03 coating is to have increased again the coating antirust, anti-corrosion paint forms take the amino resins of the epoxy resin of acid and alkali resistance corrosion and certain degree of etherification falling as base-material, 150 ℃ following use reliable.
In addition; LX-03 corrosion-inhibiting coating also has firmly tack; due to the composition of composition LX-03 coating and in spraying process; through strict rust cleaning, curing, oven dry supervisor; make LX-03 coating and carbon steel metal surface form firmly cohesive force; cause in the situation that temperature, pressure, flow constantly change and can not be washed, play the effect of diaphragm, and isolated water, steam, H+, NH
3, HCN, CL etc. contact chemically reactive with metal surface, increase the service life.
For clear its chemical property and the physical property of representing, below list describe:
The chemical corrosion resisting property table of table one
Table two physical and mechanical properties table
| Sequence number | Project | Priming paint | Finish paint |
| 1 | Color | Shallow rust | Chrome green look |
| 2 | Viscosity (s) coating-4 viscosity meter | 40～60 | 40～60 |
| 3 | (μ m) for fineness | ≤60 | ≤40 |
| 4 | Adhesive force (level) | 1 | 1 |
| 5 | Bendability (mm) | 2 | 2 |
| 6 | Impact strength (j) | 4.9 | 4.9 |
| 7 | Surface drying time (h) (fingers-touch method) | <3 | <3 |
| 8 | Hardness (glass hard (HRC65Yi Shang) is 1) | >0.75 | >0.75 |
| 9 | Curing | 160 ℃, 1 hour | 200 ℃, 1 hour |
| 10 | Water absorption rate (%) | 0.35 | 0.34 |
| 11 | Heat resistance (200 ℃, 24 hours) | Adhesion 1 grade, without splitting | Adhesion 1 grade, without splitting |
| 12 | Moisture-proof (144h) | 1 grade | 1 grade |
| 13 | Temp. variation resistant (180～+ 200 ℃) | 8 cycles are unchanged | 8 cycles are unchanged |
| 14 | (kcal/m2 ℃ h) for thermal conductivity factor | 0.9 | 0.42 |
| 15 | Dirtiness resistance (m2 ℃ of h/kcal) | ? | 1.66--2.8×10-4 |
LX-03 coating is mainly used in preventing seawater, salt water, brackish water, fresh water, the corrosion of weak acidic medium and alkaline medium and fouling.Be applicable to the anticorrosion and scale inhibition of the heat exchange equipment of petroleum refining, petrochemical industry, organic synthesis, chemical fertilizer, chlor-alkali, pharmacy, salinization, metallurgy, generating, food, printing and dyeing industry.Long-term work temperature≤150 ℃ in Applicable media.
Coating construction requirement:
1. painting environment: temperature 15-35 ℃, relative humidity is less than 85%, without dust;
2. workpiece state: answered flawless by being coated with surface, without crator, without burr, must adopt and be welded and fixed with tube bank without wedge angle, cold exchange device card, weld bond should be smooth, and pipeline must adopt flange connection;
3. surface treatment: being coated with workpiece must carry out strict oil removing, processing of rust removing, reaching surface (checks with hanging water law without greasy dirt, meeting Japanese JISZ0305-1980 standard regulation) derusting by sandblasting etc. should meet Svensk Standard SIS05-5900-1967, more than SA2 level, acid pickling and rust removing grade should meet front West Germany standard DING55928Be level regulation;
4. coating process: can adopt the methods such as spraying, showering, dip-coating, perfusion, roller coating, also can adopt electrostatic spraying; Heat-transfer pipe 2 is interior should adopt the painting method of filling with; Heat-transfer pipe 2 is outer should adopt showering or spraying process; Tube sheet, bobbin carriage 3, housing 1 surface should adopt and brush or spraying process;
5. coating structure: priming paint twice, finish paint four times, total coating thickness is controlled at 200 ± 50 μ m;
6. curing: after abundant surface drying, send in far-infrared oven and be cured processing, 160 ± 5 ℃ of solidification temperatures, 200 ± 5 ℃ of final curing of coatings temperature;
7. coating quality index: outward appearance, chrome green look, smooth surface, without dripping pendant, without bubble, foreign.Thickness, 200 ± 50 μ m;
Hole, tests with reference to Unite States Standard, while adopting electric spark to detect, forbids ultra-voltage, and technical indicator is by following regulation: voltage 1000V, spark generating capacity is not more than 10 ∕ ㎡.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Except the technical characterictic described in description, be the known technology of those skilled in the art.
Claims (5)
1. a novel fixed tube-sheet exchanger, comprise housing, heat-transfer pipe, bobbin carriage, deflection plate and expansion joint, arrangement of baffles is in housing, bobbin carriage is connected with the tube sheet flange being welded on the tube sheet at housing two ends by channel flange, it is characterized in that: on an end face of tube sheet flange, establish the trapezoidal groove of ring-type at channel flange, in described trapezoidal groove, be provided with annular seal ring; Corresponding with described trapezoidal groove, on tube sheet flange, establish the trapezoid boss of ring-type.
2. novel fixed tube-sheet exchanger according to claim 1, it is characterized in that: described deflection plate is that disc-shaped structure cuts a part, and the radical length that is D font and its broken partial section is 1/4 to 1/3 of housing internal diameter, the spacing between adjacent two deflection plates is 0.25 to 0.4 times of housing internal diameter.
3. novel fixed tube-sheet exchanger according to claim 1 and 2, is characterized in that: at tube side and shell-side face coating LX-03 corrosion-inhibiting coating respectively.
4. novel fixed tube-sheet exchanger according to claim 3, is characterized in that: comprise two-layer primer coating and four aspect lacquer coats at the LX-03 of shell-side face coating corrosion-inhibiting coating; LX-03 corrosion-inhibiting coating in tube side surface coating comprises two-layer primer coating and three aspect lacquer coats.
5. novel fixed tube-sheet exchanger according to claim 4, is characterized in that: the gross thickness in the coating of the LX-03 of shell-side face coating corrosion-inhibiting coating is 150-250 μ m; Gross thickness at the LX-03 corrosion-inhibiting coating of tube side surface coating is greater than 150 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320807053.5U CN203595433U (en) | 2013-12-10 | 2013-12-10 | Novel fixed tube-sheet exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320807053.5U CN203595433U (en) | 2013-12-10 | 2013-12-10 | Novel fixed tube-sheet exchanger |
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| CN203595433U true CN203595433U (en) | 2014-05-14 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673691A (en) * | 2013-12-10 | 2014-03-26 | 山东蓝星清洗防腐公司 | Novel fixed tube-sheet heat exchanger |
| CN104613794A (en) * | 2015-02-15 | 2015-05-13 | 卢晓丽 | Shell-and-tube heat exchanger |
| WO2016001877A1 (en) * | 2014-07-03 | 2016-01-07 | Sabic Global Technologies B.V. | System and method for repairing a seam of a heat exchange system |
| CN107388858A (en) * | 2017-08-01 | 2017-11-24 | 芜湖精达机械制造有限公司 | A kind of fresh-water cooler |
| CN110028121A (en) * | 2019-05-10 | 2019-07-19 | 成都三顶环保科技有限公司 | Desulfurization wastewater treatment system |
-
2013
- 2013-12-10 CN CN201320807053.5U patent/CN203595433U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673691A (en) * | 2013-12-10 | 2014-03-26 | 山东蓝星清洗防腐公司 | Novel fixed tube-sheet heat exchanger |
| WO2016001877A1 (en) * | 2014-07-03 | 2016-01-07 | Sabic Global Technologies B.V. | System and method for repairing a seam of a heat exchange system |
| CN106415185A (en) * | 2014-07-03 | 2017-02-15 | 沙特基础工业全球技术有限公司 | System and method for repairing a seam of a heat exchange system |
| CN104613794A (en) * | 2015-02-15 | 2015-05-13 | 卢晓丽 | Shell-and-tube heat exchanger |
| CN107388858A (en) * | 2017-08-01 | 2017-11-24 | 芜湖精达机械制造有限公司 | A kind of fresh-water cooler |
| CN110028121A (en) * | 2019-05-10 | 2019-07-19 | 成都三顶环保科技有限公司 | Desulfurization wastewater treatment system |
| CN110028121B (en) * | 2019-05-10 | 2021-10-22 | 成都三顶环保科技有限公司 | Desulfurization wastewater treatment system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20191210 |
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| CF01 | Termination of patent right due to non-payment of annual fee |