CN103743269A - Non-isometric double-spiral baffle-plate tube shell heat exchanger - Google Patents

Non-isometric double-spiral baffle-plate tube shell heat exchanger Download PDF

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Publication number
CN103743269A
CN103743269A CN201410038261.2A CN201410038261A CN103743269A CN 103743269 A CN103743269 A CN 103743269A CN 201410038261 A CN201410038261 A CN 201410038261A CN 103743269 A CN103743269 A CN 103743269A
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CN
China
Prior art keywords
heat exchanger
baffle
tube
shell
deflection plate
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.)
Pending
Application number
CN201410038261.2A
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Chinese (zh)
Inventor
赵建军
赵桂锋
闵春华
施乃溶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANTONG SHUGUANG ELECTROMECHINCAL ENGINEERING Co Ltd
Original Assignee
NANTONG SHUGUANG ELECTROMECHINCAL ENGINEERING Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by NANTONG SHUGUANG ELECTROMECHINCAL ENGINEERING Co Ltd filed Critical NANTONG SHUGUANG ELECTROMECHINCAL ENGINEERING Co Ltd
Priority to CN201410038261.2A priority Critical patent/CN103743269A/en
Publication of CN103743269A publication Critical patent/CN103743269A/en
Pending legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency

Abstract

The invention relates to a non-isometric double-spiral baffle-plate tube shell heat exchanger which is used in industries such as petroleum, chemical industry, electricity, sea water desalination and the like. The tube shell heat exchanger comprises fixed tube plates, a shell, heat exchange tubes, a baffle plate group and a middle fixed tube, wherein a heat exchange tube bundle composed of a plurality of parallel heat exchange tubes penetrates through the baffle plate group to be arranged between the two fixed tube plates; the baffle plate group is formed by overlapping four quarter-fan-shaped baffle plates and is in a spiral form with two spiral flow channels, and the screw pitch is gradually increased in a flowing axis direction. The tube shell heat exchanger adopts the double-spiral baffle plates so as to ensure the continuity of flow, a fluid cannot leak from a triangle area, and the heat exchange efficiency is increased. The inclined fan-shaped baffle plates cause the flowing direction of the fluid to stably change, reduce the pressure loss of flow and reduce vibration, and the service life of the heat exchanger is prolonged. Meanwhile, the non-isometric baffle plates are adopted, so that the comprehensive heat exchange performance of the heat exchanger is increased, the heat exchange coefficient is higher and the flow resistance is smaller under same pressure drop, and the heat exchanger is especially suitable for high-viscosity fluid.

Description

A kind of non-equidistant double helix baffle shell-and-tube heat exchanger
Technical field
The present invention relates to a kind of at oil, chemical industry, electric power, the shell-and-tube heat exchanger using in the industry such as desalinization, specifically a kind of novel non-equidistant double helix baffle shell-and-tube heat exchanger.
Background technology
China is in the high speed development stage now, and energy resource consumption is high, has caused energy security and environmental problem, wherein improves efficiency of energy utilization and energy-saving and emission-reduction and becomes the key link addressing this problem.In AND ENERGY RESOURCES CONSUMPTION IN CHINA, industry accounts for share maximum, surpasses 70% of energy resource consumption total amount, its PetroChina Company Limited., and chemical industry, metallurgy, electric power and heating power department are all major power consumers, in these high energy consumption departments, are using in a large number various heat exchangers.According to statistics, in modern chemistry industry, the investment of heat exchanger used accounts for greatly 30% of equipment investment, and in oil plant, heat exchanger accounts for 40% left and right of equipment investment, and in sea water desalting equipment, proportion is higher.Improve energy efficiency and the economic benefit of China's industrial circle, essential for the research and development of high-effect energy-saving heat-exchanger.
In shell-and-tube heat exchanger, have cold and hot two kinds of fluids, a kind of fluid flows in pipe, and one other fluid flows at shell-side, by heat exchanger tube, carries out exchange heat.Conventionally at shell-side, deflection plate is set and is used for supporting tube bank, change shell fluid flow direction simultaneously, increase turbulent flow to reach the object of enhanced heat exchange.In former deflection plate, common single-screw deflection plate only can be arranged the deflection plate of a small amount of several pitch, and the deflection plate number of arranging in common baffle heat exchanger is far more than this.Because runner is too short, be unfavorable for like this formation of mobile whirlpool, again due to leaky between adjacent baffle, segment fluid flow flows away from the trigonum between two segmental baffles, there is serious leakage current problem, cause in addition heat exchanger shell-side flow resistance to increase, also affected the heat exchange property of heat exchanger.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of non-equidistant double helix baffle shell-and-tube heat exchanger.
The present invention includes fixed tube sheet, housing, heat exchanger tube, baffle groups, middle stationary pipes, the heat-exchanging tube bundle that described a plurality of heat exchanger tubes that be arranged in parallel form is arranged between two fixing tube sheets through baffle groups, baffle groups is the spiral form with two helical flow paths forming by after four 1/4th segmental baffle overlap joints, and described pitch runner increases gradually along flow axes direction.
Segmental baffle of the present invention can be that sixth is fan-shaped, by six described segmental baffles, forms baffle groups, forms two helical flow paths.
Every deflection plate in first group of baffle groups of the present invention becomes 15 degree angles with level, on later every group of deflection plate, every deflection plate and horizontal sextant angle increase gradually, thereby increases pitch.
Every deflection plate in first group of baffle groups of the present invention becomes 50 degree angles with level, on later every group of deflection plate, every deflection plate and horizontal sextant angle reduce gradually, thereby reduces pitch.
The deflection plate helical angle of spiral of the present invention increases successively by direction of flow or reduces successively or interlace conversion.
Its continuous helical duct of the present invention can be that left hand helix can be also right-handed helix.
The present invention improves single-screw baffle heat exchanger, adopted double helix deflection plate, four 1/4th fan-shapedly form a baffle groups through row point overlap joint, fluid forms two helical flow paths under the guide functions of segmental baffle group, and fluid continuously changes direction in mobile forward process, thereby produces whirlpool enhanced heat exchange, two other helical flow path has guaranteed mobile continuity, fluid can be from trigonum leakage current, fully with heat-exchanging tube bundle through row heat exchange, raising heat exchange efficiency.The segmental baffle tilting steadily changes direction of flow, reduces the crushing that flows, and reduces vibrations.Heat exchanger after improvement can make fluid according to reasonable manner is mobile more, increase the flow velocity of shell-side fluid, less scaling, there is not leakage current, make heat exchanger structure compacter, reduce greatly flow resistance, improve heat exchange efficiency, heat-exchanging tube bundle is had good stability, improved the service life of heat exchanger.
The present invention also to uniform pitch baffle heat exchanger through having gone improvement, adopted non-uniform pitch baffle heat exchanger, improved the comprehensive heat exchange property of heat exchanger, under same pressure drop, the coefficient of heat transfer is higher and flow resistance is less, is especially applicable to full-bodied fluid.
The double-shell side shell-and-tube heat exchanger that the present invention adds sleeve pipe to centre, also through having gone improvement, can, through row heat convection, have been strengthened the mixing of housing center and ambient fluid, enhanced heat exchange two helical duct central fluid.
Accompanying drawing explanation
Fig. 1 is non-equidistant double helix baffle shell-and-tube heat exchanger structural representation;
Fig. 2 is non-equidistant double helix baffle shell-and-tube heat exchanger baffle groups arrangement mode structural representation;
Fig. 3 is non-equidistant double helix baffle shell-and-tube heat exchanger part deflection plate overlap joint schematic diagram.
The specific embodiment
As shown in Figure 1: this non-equidistant double helix baffle shell-and-tube heat exchanger comprises fixed tube sheet 1, housing 2, heat exchanger tube 3, baffle groups 4, middle stationary pipes 7, the heat-exchanging tube bundle that a plurality of heat exchanger tubes that be arranged in parallel 3 form is fixed between two fixed tube sheets 1 through deflection plate 4, and baffle groups forms after having four 1/4th segmental baffle point overlap joints.Baffle groups forms two helical ducts 5,6.In baffle groups 4 every deflection plate the same with level inclination, inclination angle e, between 5 ~ 50 degree, and increases gradually or reduces to each deflection plate in flow direction baffle groups and the inclination angle of level.
Cold (heat) medium is entered by the import on housing 2, in shell side through two independent spiral passages 5,6 are flowed out by the outlet on housing 2 again, heat (cold) medium is entered by one end fixed tube sheet 1, the heat-exchanging tube bundle that a plurality of heat exchanger tubes that be arranged in parallel 3 of flowing through form, is being flowed out by other one end fixed tube sheet 1.Not equidistant double helix passage 5,6 not only can be avoided flow dead, and can improve unit pressure drop, reduces flow resistance, enhanced heat exchange.

Claims (6)

1. a non-equidistant double helix baffle shell-and-tube heat exchanger, comprise fixed tube sheet, housing, heat exchanger tube, baffle groups, middle stationary pipes, the heat-exchanging tube bundle that described a plurality of heat exchanger tubes that be arranged in parallel form is arranged between two fixing tube sheets through baffle groups, baffle groups is the spiral form with two helical flow paths forming by after four 1/4th segmental baffle overlap joints, it is characterized in that described pitch runner increases gradually along flow axes direction.
2. non-equidistant double helix baffle shell-and-tube heat exchanger according to claim 1, is characterized in that segmental baffle is that sixth is fan-shaped, by six deflection plates, forms baffle groups, forms two helical flow paths.
3. non-equidistant double helix baffle shell-and-tube heat exchanger according to claim 1, it is characterized in that every deflection plate in first group of baffle groups becomes 15 degree angles with level, on later every group of deflection plate, every deflection plate and horizontal sextant angle increase gradually, thereby increase pitch.
4. non-equidistant double helix baffle shell-and-tube heat exchanger according to claim 1, it is characterized in that every deflection plate in first group of baffle groups becomes 50 degree angles with level, on later every group of deflection plate, every deflection plate and horizontal sextant angle reduce gradually, thereby reduce pitch.
5. non-equidistant double helix baffle shell-and-tube heat exchanger according to claim 1, is characterized in that the deflection plate helical angle of described spiral increases successively by direction of flow or reduces successively or interlace conversion.
6. non-equidistant double helix baffle shell-and-tube heat exchanger according to claim 1, is characterized in that described in it that continuous helical duct is left hand helix or right-handed helix.
CN201410038261.2A 2014-01-27 2014-01-27 Non-isometric double-spiral baffle-plate tube shell heat exchanger Pending CN103743269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410038261.2A CN103743269A (en) 2014-01-27 2014-01-27 Non-isometric double-spiral baffle-plate tube shell heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410038261.2A CN103743269A (en) 2014-01-27 2014-01-27 Non-isometric double-spiral baffle-plate tube shell heat exchanger

Publications (1)

Publication Number Publication Date
CN103743269A true CN103743269A (en) 2014-04-23

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CN201410038261.2A Pending CN103743269A (en) 2014-01-27 2014-01-27 Non-isometric double-spiral baffle-plate tube shell heat exchanger

Country Status (1)

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CN (1) CN103743269A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910486A (en) * 2016-04-15 2016-08-31 东南大学 Multi-head six-part spiral baffle plate heat exchanger baffle plate support structure
CN107883803A (en) * 2017-11-06 2018-04-06 深圳中广核工程设计有限公司 shell-and-tube heat exchanger
CN109579573A (en) * 2018-12-07 2019-04-05 西安交通大学 A kind of spiral lattice board shell-and-tube heat exchanger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1183382A (en) * 1997-09-11 1999-03-26 Hitachi Ltd Shell-and tube heat exchanger and freezer using the same
CN2339964Y (en) * 1998-05-12 1999-09-22 杨杰辉 Spiral baffle heat-exchanger
CN201611239U (en) * 2010-01-28 2010-10-20 四平市巨元瀚洋板式换热器有限公司 Shell-and-tube double spiral baffle heat exchanger
CN201867093U (en) * 2010-08-17 2011-06-15 中国石油大学(华东) Variable-pitch double helical baffle heat exchanger
CN203893704U (en) * 2014-01-27 2014-10-22 南通曙光机电工程有限公司 Non-isometric dual helical baffle plate tubular heat exchanger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1183382A (en) * 1997-09-11 1999-03-26 Hitachi Ltd Shell-and tube heat exchanger and freezer using the same
CN2339964Y (en) * 1998-05-12 1999-09-22 杨杰辉 Spiral baffle heat-exchanger
CN201611239U (en) * 2010-01-28 2010-10-20 四平市巨元瀚洋板式换热器有限公司 Shell-and-tube double spiral baffle heat exchanger
CN201867093U (en) * 2010-08-17 2011-06-15 中国石油大学(华东) Variable-pitch double helical baffle heat exchanger
CN203893704U (en) * 2014-01-27 2014-10-22 南通曙光机电工程有限公司 Non-isometric dual helical baffle plate tubular heat exchanger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910486A (en) * 2016-04-15 2016-08-31 东南大学 Multi-head six-part spiral baffle plate heat exchanger baffle plate support structure
CN105910486B (en) * 2016-04-15 2018-03-20 东南大学 A kind of bull six divides the baffle plate support structure of spiral baffle heat exchanger
CN107883803A (en) * 2017-11-06 2018-04-06 深圳中广核工程设计有限公司 shell-and-tube heat exchanger
CN107883803B (en) * 2017-11-06 2019-10-15 深圳中广核工程设计有限公司 Shell-and-tube heat exchanger
CN109579573A (en) * 2018-12-07 2019-04-05 西安交通大学 A kind of spiral lattice board shell-and-tube heat exchanger

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Application publication date: 20140423