CN2662187Y - An externally intensified heat transferring composite tube - Google Patents

An externally intensified heat transferring composite tube Download PDF

Info

Publication number
CN2662187Y
CN2662187Y CN 03207498 CN03207498U CN2662187Y CN 2662187 Y CN2662187 Y CN 2662187Y CN 03207498 CN03207498 CN 03207498 CN 03207498 U CN03207498 U CN 03207498U CN 2662187 Y CN2662187 Y CN 2662187Y
Authority
CN
China
Prior art keywords
tube
heat
heat transfer
transfer
augmentation
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 - Fee Related
Application number
CN 03207498
Other languages
Chinese (zh)
Inventor
白争鸣
张智
杨开远
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.)
DAQING PETROCHEMICAL MACHINERY FACTORY
CNPC Daqing Petrochemical Complex
Original Assignee
DAQING PETROCHEMICAL MACHINERY FACTORY
CNPC Daqing Petrochemical Complex
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.)
Filing date
Publication date
Application filed by DAQING PETROCHEMICAL MACHINERY FACTORY, CNPC Daqing Petrochemical Complex filed Critical DAQING PETROCHEMICAL MACHINERY FACTORY
Priority to CN 03207498 priority Critical patent/CN2662187Y/en
Application granted granted Critical
Publication of CN2662187Y publication Critical patent/CN2662187Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The utility model relates to an extrinsic-strengthening heat-transfer composite tube of a heat exchanger, providing an effective strengthening heat-transfer tube which accords with national standard and can be used at low temperature (below minus 20 DEG C). The utility model comprises a base tube and an outer composite coated tube which are combined tightly. Strengthening heat-transfer thread fins are arranged on the outer composite coated tube. When the outer composite coated tube works in the low-temperature heat-transfer equipment, the base tube has a support and heat-transfer function; the thread fins of the outer composite coated tube have a strengthening heat-transfer function, which increases heat-transfer rate greatly and solves the restricting problem of scratching on the surface of the pressure-bearing unit at low temperature. As a result, the utility model has wide application in petrochemical industry, medicine, food and other fields.

Description

A kind of outer augmentation of heat transfer multiple tube
Technical field: the utility model belongs to the heat transmission equipment of petrochemical industry, a kind of outer augmentation of heat transfer multiple tube that particularly uses on the heat transmission equipment.
Background technology: at present, in petrochemical equipment, high-performance heat exchanger has obtained applying widely.Efficient heat-exchanging pipe in the high-performance heat exchanger generally all is an intensify heat transfer pipe outside screwed pipe by being processed into of the outer surface of pipe, T type finned tube, prismatic finned tube etc.But for the low temperature applying working condition that is lower than-20 ℃, national standard (GB150 and GB151) is clearly stipulated: " must not delineate or beat material marking, welder's steel seal etc. on pressure parts ".This regulation has seriously restricted the application of outer augmentation of heat transfer efficient heat-exchanging pipe under low temperature environment.The effective means that present conventional shell-and-tube heat exchanger pipe evaporates augmentation of heat transfer outward is fin or surface preparation porous coatings such as the rolling T type of tube outer surface, prismatic.Though porous coating augmentation of heat transfer effect is better, the manufacturing cost height though finned tube processing costs such as T type, prismatic are low, can not be used for cryogenic heat transfer equipment, can not satisfy the requirement of GB151 Cryo Equipment pressure parts.
Summary of the invention: main purpose of the present utility model is exactly in order to address the above problem, the multiple tube of augmentation of heat transfer outside a kind of pipe that uses under cryogenic conditions is provided, when making efficient heat-exchanging pipe under cryogenic conditions, give full play to efficient heat transfer, can satisfy the national standard requirement again, guarantee the security of operation of Cryo Equipment.
To achieve these goals, outer augmentation of heat transfer multiple tube of the present utility model comprises parent tube and outer compound cage walls, for closely cooperating, the screw thread fin of augmentation of heat transfer is arranged on the outer compound cage walls between parent tube and the outer compound cage walls.
This outer augmentation of heat transfer multiple tube is in the cryogenic heat transfer equipment running process, the parent tube that plays pressure-bearing and heat transfer effect meets national standard (GB150 and GB151) requirement fully, parent tube and outer compound cage walls closely cooperate, and the screw thread fin that has on the outer compound cage walls of augmentation of heat transfer plays the augmentation of heat transfer effect.Screw thread fin on the outer compound cage walls generally is rolled into T shape fin or prismatic fin through rolling formation; Outer cage walls can be identical with basepipe materials, also can be different, and specifically will be according to the operating mode decision of heat transfer medium; The complex method of outer cage walls can be parent tube utmost point winding weldering in addition, also can be that the metal tape spiral twines, also can be that sheet material coats, also can be that pipe is outer rolls the outer tube that the screw thread fin is arranged, and the screw thread fin on the outer compound cage walls is rolled into T shape or prismatic by three-high mill.
Outer augmentation of heat transfer multiple tube of the present utility model, because parent tube and outer cage walls adopt split interference or cladding in conjunction with design, this outer augmentation of heat transfer multiple tube can be applied in the cryogenic heat transfer equipment, greatly improved the heat transfer efficiency of equipment, solve the responsive increase problem of the material fragility that the delineation of pressure restraining element surface causes under the low temperature effectively, had wide purposes aspect the cryogenic heat transfer of industry such as petrochemical industry, medicine, food.Simultaneously,, can save non-ferrous metal to greatest extent, save the device fabrication cost according to different operating modes because basepipe materials and outer coating tube material can adopt the material of unlike material.
Description of drawings: Fig. 1 is a structural representation of the present utility model;
Embodiment:
Embodiment 1: as shown in Figure 1, the outer surface of parent tube (1) is carried out being enclosed within the outer cage walls (2) after the bright and clean processing, outer cage walls (2) is carried out stretching after the heat treated, make between parent tube (1) and the outer cage walls (2) contact closely.Surface Machining with outer cage walls (2) goes out the dark helical groove of the wide 2mm of about 1.5mm then, make the surface of outer cage walls (2) form the spiral wing, processing the T type (3) that the spiral wing is rolled into about 1.5mm through rolling, the helical groove after the extruding has also formed the T type simultaneously.According to the environment for use difference, parent tube (1) can be carbon steel pipe or stainless steel tube etc., and outer cage walls (2) can be aluminum pipe, copper pipe or carbon steel pipe.Parent tube in the present embodiment (1) is a carbon steel pipe, and outer cage walls (2) is an aluminum pipe.Utilize the experimental prototype heat exchanger applications of this pipe manufacturer to make condenser at dethanizer, working environment is:
Temperature :-33--35 ℃ on pipe layer, medium: deethanization cat head liquid
Shell temperature :-37--40 ℃; Medium: propylene
Pressure is greater than 2.0Mpa
Its result of use is very desirable.
Embodiment 2: as shown in Figure 1, after the outer surface of parent tube (1) carried out bright and clean processing, twine cage walls (2) outside the formation with metal tape at the outer surface spiral of parent tube (1), Surface Machining with outer cage walls (2) goes out the helical groove that about 1.5mm is wide, 2mm is dark then, make the surface of outer cage walls (2) form helical fin, at the T type fin (3) that the spiral wing is rolled into about 1.5mm through rolling processing, helical groove after the rolling has simultaneously also formed T type groove (if spiral twines the helical fin that the metal tape of usefulness has projection outward, directly the T matrix is processed in rolling).Metal tape is generally copper or aluminium, and parent tube (1) can be carbon steel pipe or stainless steel tube etc. according to the environment for use difference.
T type finned tube is a kind of efficient heat-exchanging pipe.Its design feature is to form a series of spiral ring T types tunnel at tube outer surface.Manage and in the tunnel, form a series of nuclei of bubbles when outer medium is heated, because heating status around the medium in the chamber, tunnel is in, nuclei of bubbles is expanded rapidly and is full of inner chamber, continues to be heated bubble inner pressure power is increased fast, impels bubble ejection rapidly from the tube-surface finedraw.The bubble ejection time has the bigger strength of washing away, and produces certain local decompression, makes on every side that lower temperature liquid pours in T type tunnel, forms continual boiling.This boiling mode is in the unit interval, and the heat of taking away on the per surface area is far longer than light pipe, thereby this cast has higher boiling heat transfer ability.
The single tube experiment that with the freon-11 is medium shows that T type pipe boiling heat transfer coefficient can reach 10 times of light pipe; With liquefied ammonia is the tubule bundle experimental result of medium, and overall heat-transfer coefficient is 2.2 times of light pipe; With C 3, C 4The reboiler industry of hydro carbons knockout tower is demarcated and is shown that during underload, T type pipe overall heat-transfer coefficient is higher by 50% than plain tube, and is high by 99% when loading greatly.
As long as the shell-side medium is relatively clean, no solid particle, no colloid, all can adopt T type finned tube to make heat exchange element, manufacture T type fin tube type high-performance heat exchanger, with raising boiling heat transfer effect.

Claims (3)

1, a kind of outer augmentation of heat transfer multiple tube is made of parent tube and outer compound cage walls, and it is characterized in that between parent tube (1) and the outer compound cage walls (2) having the screw thread fin (3) of augmentation of heat transfer for closely cooperating on the outer compound cage walls (2).
2, outer augmentation of heat transfer multiple tube as claimed in claim 1 is characterized in that the screw thread fin (3) that outer compound cage walls (2) is gone up augmentation of heat transfer is a T shape fin.
3, outer augmentation of heat transfer multiple tube as claimed in claim 1 is characterized in that the screw thread fin (3) that outer compound cage walls (2) is gone up augmentation of heat transfer is a rib type fin.
CN 03207498 2003-09-01 2003-09-01 An externally intensified heat transferring composite tube Expired - Fee Related CN2662187Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03207498 CN2662187Y (en) 2003-09-01 2003-09-01 An externally intensified heat transferring composite tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03207498 CN2662187Y (en) 2003-09-01 2003-09-01 An externally intensified heat transferring composite tube

Publications (1)

Publication Number Publication Date
CN2662187Y true CN2662187Y (en) 2004-12-08

Family

ID=34324592

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03207498 Expired - Fee Related CN2662187Y (en) 2003-09-01 2003-09-01 An externally intensified heat transferring composite tube

Country Status (1)

Country Link
CN (1) CN2662187Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101799252A (en) * 2010-03-24 2010-08-11 北京化工大学 Strengthened heat exchange tube
US7789127B2 (en) 2005-08-09 2010-09-07 Jiangsu Cuilong Precision Copper Tube Corporation Heat transfer tubes for evaporators
CN101871741A (en) * 2010-05-07 2010-10-27 佛山市顺德区华天成电器有限公司 Finned composite tube for heat exchangers and fabrication method thereof
US8091616B2 (en) 2008-03-12 2012-01-10 Jiangsu Cuilong Precision Copper Tube Corporation Enhanced heat transfer tube and manufacture method thereof
CN103983135A (en) * 2014-03-21 2014-08-13 浙江润祁节能科技有限公司 Nuclear-grade stainless steel high-finned-ratio heat exchange pipe and manufacturing method thereof
CN105910484A (en) * 2016-04-27 2016-08-31 江苏广旭热管科技有限公司 Composite finned tube

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7789127B2 (en) 2005-08-09 2010-09-07 Jiangsu Cuilong Precision Copper Tube Corporation Heat transfer tubes for evaporators
US8091616B2 (en) 2008-03-12 2012-01-10 Jiangsu Cuilong Precision Copper Tube Corporation Enhanced heat transfer tube and manufacture method thereof
CN101799252A (en) * 2010-03-24 2010-08-11 北京化工大学 Strengthened heat exchange tube
CN101871741A (en) * 2010-05-07 2010-10-27 佛山市顺德区华天成电器有限公司 Finned composite tube for heat exchangers and fabrication method thereof
CN101871741B (en) * 2010-05-07 2012-07-04 佛山市顺德区华天成电器有限公司 Finned composite tube for heat exchangers and fabrication method thereof
CN103983135A (en) * 2014-03-21 2014-08-13 浙江润祁节能科技有限公司 Nuclear-grade stainless steel high-finned-ratio heat exchange pipe and manufacturing method thereof
CN103983135B (en) * 2014-03-21 2016-05-18 祁同刚 The high wing of a kind of nuclear grade stainless steel is than heat exchanger tube and manufacture method thereof
CN105910484A (en) * 2016-04-27 2016-08-31 江苏广旭热管科技有限公司 Composite finned tube

Similar Documents

Publication Publication Date Title
CN201034436Y (en) Dual-reinforced evaporating heat transfer tube
US6164370A (en) Enhanced heat exchange tube
EP1502067B1 (en) Heat transfer tubes, including methods of fabrication and use thereof
CN101182977A (en) Inner chiasma spiral exterior three-dimensional diamond-type rib double-side intensify heat transfer pipe
CN2662187Y (en) An externally intensified heat transferring composite tube
US9541336B2 (en) Evaporation heat transfer tube with a hollow cavity
CN201145509Y (en) Inner cross spiral outer three-dimensional diamond-shaped rib double-side reinforced heat transfer pipe
CN210400120U (en) Spiral flat pipe with spiral T-shaped fins outside pipe
Kapustenko et al. Intensification of heat transfer processes
CN101284297A (en) Processing method and apparatus of internal thread aluminium pipe
CN201917241U (en) Evaporation air cooler of special-shaped section corrugated pipe
CN2837760Y (en) Spiral corrugated metal pipe
CN102032818A (en) Efficient reinforced anti-vibration tube piece-shell-and-tube heat exchanger
CN2656929Y (en) Wind rolling type T shaped fin tube
CN2240704Y (en) Internal and external spiral tuberculated pipe with small spiral angle
CN102918349B (en) The septal fossula barrel that Squeezing ground is good
CN201527205U (en) High-efficient strengthened anti-vibration shell-and-tube heat exchanger
JPH04260793A (en) Heat transfer tube with inner surface groove
CN202719913U (en) Compound middle-fin efficient corrosion-resistant heat exchange tube
CN218002297U (en) Heat exchange area increases large-scale heat transfer sleeve pipe
RU2450880C1 (en) Method of fabricating heat exchange bimetallic ribbed tube
CN101780492B (en) Method for processing titanium and titanium alloy multi-start helical tubes
CN2170494Y (en) Efficient ammonia air cooler fin tube with steelbase tube Al fin
CN2106343U (en) Radiating finned tube
CN217900584U (en) Spiral heat exchanger

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20041208

Termination date: 20091009