CN201974085U - Special-shaped heat exchange tube with straight tube segment - Google Patents
Special-shaped heat exchange tube with straight tube segment Download PDFInfo
- Publication number
- CN201974085U CN201974085U CN2010206955352U CN201020695535U CN201974085U CN 201974085 U CN201974085 U CN 201974085U CN 2010206955352 U CN2010206955352 U CN 2010206955352U CN 201020695535 U CN201020695535 U CN 201020695535U CN 201974085 U CN201974085 U CN 201974085U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- tube
- exchanger tube
- heat exchange
- straight length
- 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
Links
Images
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a special-shaped heat exchange tube with a straight tube segment, which at least comprises a tube body and a medium channel that is formed through surrounding the tube body. The tube body has a special-shaped tube wall which divides the medium channel into a plurality of peripheral heat exchange areas and a central heat exchange area. The cross-sectional areas of the plurality of peripheral heat exchange areas are respectively same with that of the central heat exchange area approximately. The tube body comprises at least one straight tube segment. The special-shaped heat exchange tube with the straight tube segment according to the utility model has the following advantages: low cost, and high convenience in manufacturing. The special-shaped heat exchange tube with the straight tube segment is suitable for being used as the tube in a high-efficiency heat exchanger or heat exchange equipment in multiple industries such as petroleum, chemical industry, chemical fertilizer, pharmacy, food, electric power, nuclear energy, environment protection and heat supply.
Description
Technical field
The utility model relates to the metal tube processing technique field, relates in particular to a kind of band straight length abnormity heat exchanger tube that is used for heat transmission equipment such as heat exchanger.
Background technology
Press GB/T24590-2009 " high-performance heat exchanger heat exchanger tube " standard, the existing high-efficiency heat exchange tube for heat exchanger of China is divided into and is four major types, is respectively T type barrel, bellows, interior ripple male-pipe, interior barrel.The common ground of their maximums is: all be to go up at metal parent tube (straight collimator) by cold machining process to make the heat exchanger tube that processes.
As shown in Figure 1, T type barrel of the prior art forms intensive helical form T type groove 11 by cold working on the outer wall of metal parent tube 1.T type barrel can be divided into by version: the I type, and the pipe outer wall is T type conduit, inside pipe wall smooth surface; The II type, the pipe outer wall is T type conduit, and the inside pipe wall surface is corrugated.
As shown in Figure 2, bellows of the prior art forms the heat exchanger tube that the inside and outside surface of pipe all is corrugated 11 by cold working on metal parent tube 1.
As shown in Figure 3, of the prior art in the ripple male-pipe, on metal parent tube 1, form the pipe outer wall and be the heat exchanger tube that screw thread 11, inside pipe wall are corrugated 12 by cold working.
As shown in Figure 4, of the prior art in barrel, form the heat exchanger tube of groove 11 by cold working at the inwall of metal parent tube 1.Interior barrel can be divided into by version: I type, axial notch; The II type, helical groove.
Above-mentioned four big class heat exchanger tubes are compared with the metal straight collimator that directly is used as heat exchanger tube without cold working, because on the metal parent tube, have the formed flute profile of cold working, waveform etc., strengthened heat-transfer effect, therefore the heat exchange area and the heat exchange efficiency of heat exchanger tube have been improved effectively, so be called as heat exchanger " efficiently " heat exchanger tube.
Above-mentioned this four big class heat exchanger tube all passes through cold-formed as parent tube with the seamless metal straight collimator, its cold machining process mainly is the variation of the seamless metal straight collimator being done shape.Further, this four big class heat exchanger tube all is to carry out cold working on the inside and outside wall of seamless metal straight collimator, and the processing amplitude is limit by pipe thickness, therefore is difficult to improve significantly heat exchange area again.
Heat exchanger tube of the prior art is when doing heat exchange, and heat transferring mediums such as water, oil, gas circulate in heat exchanger tube, by means of the technical purpose of heat-shift between other media that the heat exchange tube wall is realized and heat exchanger tube is outer.In heat exchanging process, more abundant near the heat exchange that heat transferring medium carried out in heat exchanger tube tube wall zone, heat exchange efficiency is higher; And away from the heat exchanger tube tube wall, be positioned at the heat exchange of heat transferring medium of heat exchanger tube central area and insufficient, though above-mentioned heat exchanger tube therefore of the prior art improves through certain, whole heat exchange efficiency is still lower.
And, some tangible deficiency below heat exchanger tube of the prior art also exists in production, use:
1, be limited by the specification limits of cold working equipment, the heat exchanger tube finished product all is subjected to great limitation at aspects such as specification, length;
2, because the cold working step is arranged, raw-material loss is bigger;
3, because cold working process complexity causes the machining accuracy of product uneven;
4, the method for inspection of cold machining process and measuring means are difficult to guarantee end product quality;
5, limited by processing technology, tubulation efficient is not high;
6, this four big class heat exchanger tube has special external form mostly, and the making of giving heat exchange equipment brings many inconvenience such as the disposal to the deflection plate of bellows, outer barrel;
7, this four big class heat exchanger tube all passes through cold working, has residual stress on the body, medium by the time can form turbulent flow, strengthened the local corrosion of heat exchanger tube, so caused certain negative effect the service life of heat exchanging device equipment.
Heat exchanger tube of the prior art has entered a technical bottleneck for above-mentioned reasons, and heat exchange area, heat exchange efficiency are difficult to increase substantially again, have restricted the development of heat exchanger, are difficult to satisfy the demand in market.
Therefore, those skilled in the art is devoted to develop the high special-shaped heat exchanger tube of a kind of heat exchange efficiency always.
The utility model content
Because the above-mentioned defective of prior art, technical problem to be solved in the utility model provides the high special-shaped heat exchanger tube of a kind of heat exchange efficiency.
For achieving the above object, the utility model provides a kind of band straight length abnormity heat exchanger tube, comprises body at least, and surrounds the medium channel that forms by described body; Described body has special-shaped tube wall, and described special-shaped tube wall is divided into a plurality of peripheral heat transfer zone and a center heat transfer zone with described medium channel; The cross-sectional area of a plurality of described peripheral heat transfer zone is roughly the same with the cross-sectional area of described center heat transfer zone respectively; Described body comprises a straight length at least.
Preferably, described special-shaped tube wall is connected to form by a plurality of curved surfaces.
Preferably, described a plurality of curved surfaces is the continuous cold rolling machined surface that described body obtains through press process.
Preferably, described special-shaped tube wall is connected with described straight length is smooth.
Preferably, described body is the metal welded tube.
Preferably, the linearly or helical form of described body.
Band straight length abnormity heat exchanger tube of the present utility model adopts the tube wall of abnormity, the center heat transfer zone that cross-sectional area in the prior art is bigger is dwindled, approaching or identical with the cross-sectional area of peripheral heat transfer zone, improve the heat exchange efficiency of center heat transfer zone in the medium channel, thereby improved the heat exchange efficiency of entire belt straight length abnormity heat exchanger tube.
Band straight length abnormity heat exchanger tube therefore of the present utility model is roughly the several times of existing heat exchanger tube on whole heat exchange efficiency, be much higher than existing heat exchanger tube.
It is raw material that the utility model also adopts welded tube first, and the cost of welded tube is lower at least by about 20% than the cost that is used as the raw-material seamless pipe of heat exchanger tube in the prior art, thereby the utility model has reduced the manufacturing cost of heat exchanger tube significantly.
And, band straight length abnormity heat exchanger tube of the present utility model is owing to have smooth outer surface, when making heat exchange equipment, the good sealing effect of band straight length abnormity heat exchanger tube and tube sheet, be more suitable for the manufacturing technology of existing heat exchange equipment, be much higher than existing four big class heat exchanger tubes in its projected life and service life.
The end of band straight length abnormity heat exchanger tube of the present utility model leaves the straight length (directly round light pipe) of certain-length, abnormity section rounding off with the centre, can not produce rapid distortion, with tube sheet welding at present, band straight length abnormity heat exchanger tube and tube sheet combine together or guarantee enough leg size height in the time of can guaranteeing to weld.With tube sheet be under the condition of expand tube, the round light pipe section of band straight length of the present utility model abnormity heat exchanger tube can be controlled at about 40mm, is beneficial to the reliability of expand tube operation, satisfies the needs in the technology of follow-up making heat exchange equipment.
Band straight length abnormity heat exchanger tube of the present utility model, have simple in structure, cost is low, makes beneficial effects such as facility, is applicable to the pipe of using that is used as high-performance heat exchanger or heat transmission equipment in the multiple industries such as oil, chemical industry, chemical fertilizer, boiler, pharmacy, food, electric power, nuclear energy, environmental protection, heat supply.
Special-shaped mould in the utility model must be considered following factor when design: 1, should not leave the existence of sharp comer in the structural design of special-shaped mould, concentrate the tube wall crackle that causes to prevent the existing in use stress of heat exchanger tube.2, special-shaped tube wall will be complementary with the diameter and the wall thickness of heat exchanger tube.3, abnormity will adapt with DESIGN OF NON ADIABATIC and instructions for use.4, the best heat exchange area of increase heat exchanger tube and heat exchange efficiency are the starting points of special-shaped mould design.
The online pressing process of band straight length abnormity heat exchanger tube of the present utility model should be followed following requirement: 1, the target level of product quality of band straight length abnormity heat exchanger tube should strictly be implemented with the welding tube quality standard-required by associated heat exchanger; 2, necessary 100% EDDY CURRENT of weld seam of band straight length abnormity heat exchanger tube is qualified, and 100% water pressure test is qualified; 3, band straight length abnormity heat exchanger tube should carry out the high tempering typing, is strictly on guard against the shape of product resilience; 4, band straight length abnormity heat exchanger tube should be eliminated heat treatment extruding residual stress by online heat treatment; 5, the online compacting tool set of band straight length abnormity heat exchanger tube should have the unlatching closure function, can leave sufficiently long round light pipe section at the welded tube two ends according to customer demand, in order to the heat exchanger tube manufacturing; 6, the surfaces externally and internally abnormity position of band straight length abnormity heat exchanger tube does not all have sharp comer or corner angle existence; 7, the two terminal circle light pipe section of band straight length abnormity heat exchanger tube is answered rounding off with middle abnormity section, can not sharply be out of shape.
Processing technology of the present utility model is compared with heat exchange tube machining technique in the prior art, owing to there is not a large amount of cold working operations, need not a large amount of cold working operations place, special cold working equipment and professional technique workman, investment cost and manufacturing cost have been saved, thereby reduced the production cost of heat exchanger tube significantly, improve manufacturing efficient, had stable crudy.
Owing to there is not cold working, band straight length abnormity heat exchanger tube of the present utility model has significantly reduced raw-material consumption, also owing to do not have a large amount of cold worked residual stress and more smooth interior appearance, the resistance to corrosion of band straight length abnormity heat exchanger tube of the present utility model and resistive connection dirt ability obviously are better than the product that existing technology is produced.
Because a large amount of raw material that use welded tube as special pipe, the production cost of welded tube itself just reach 20% than seamless pipe is low.Also owing to effective performance of welded tube inherent characteristic, its heat exchanger tube abnormity size can be several times as much as the special type pipe of producing with seamless pipe, and its heat exchange area and heat exchange efficiency are much higher than " the effective special type pipe of high efficient heat exchanging "
Compare with hot jacket tubulation processing technology, online tube-making process of the present utility model has reduced the secondary operations flow process of welded tube, save the outer Equipment for Heating Processing of line of hot jacket processing, because on-line continuous production operation, its production efficiency is approximately nearly ten times of existing technologies, make the tubulation cost cheaper, tubulation efficient is faster.
And online tubulation also has incomparable advantage aspect the length of finished product.Because online tubulation is processing continuously, in theory, as long as be aided with a follow-up cutting work step, the band straight length abnormity heat exchanger tube of the present utility model of acquisition that online tubulation is produced can satisfy client's all lengths requirement.
Because automatic control, constant product quality, the accurate to dimension of online assignment production are higher than existing handicraft product quality level.
Processing technology of the present utility model and existing special tube for high-efficiency heat exchanger process technology from the tubulation apparatus cost relatively, existing heat exchanger tube production must have special machined, cold working equipment.And processing technology of the present utility model only need be on existing tubulation apparatus be done simple transformation to mould etc., increases one or more groups special-shaped pressing mold, just can online compacting form desired various special pipes.By online heat treatment mechanism, eliminate the residual stress of special-shaped welded tube on-line machining, to increase ability to stress corrosion resistant; By online heat treatment mechanism, eliminate the deformation resilience of special-shaped welded tube simultaneously, obtain dimensionally stable, the band straight length abnormity heat exchanger tube of physical dimension requirement up to specification.
Therefore, processing technology of the present utility model has reduced the investment in factory building and place, has reduced investment, the place area occupied need not enlarge, instant effect, beneficial effects such as production efficiency height, its production efficiency are approximately the several times of existing technology, are much higher than the processing technology of existing heat exchanger tube.
Description of drawings
Fig. 1 is the structural representation of a kind of T type barrel in the prior art;
Fig. 2 is the structural representation of a kind of bellows in the prior art;
Fig. 3 is the structural representation of a kind of interior ripple male-pipe in the prior art;
Fig. 4 is the structural representation of a kind of interior barrel in the prior art;
Fig. 5 is the vertical structure schematic diagram of the embodiment 1 of band straight length abnormity heat exchanger tube of the present invention;
Fig. 6 is embodiment illustrated in fig. 51 right TV structure schematic diagram;
Fig. 7 is the cross-sectional structure schematic diagram of the embodiment 2 of band straight length abnormity heat exchanger tube of the present utility model;
Fig. 8 is the cross-sectional structure schematic diagram of the embodiment 3 of band straight length abnormity heat exchanger tube of the present utility model;
Fig. 9 is the cross-sectional structure schematic diagram of the embodiment 4 of band straight length abnormity heat exchanger tube of the present utility model;
Figure 10 is the cross-sectional structure schematic diagram of the embodiment 5 of band straight length abnormity heat exchanger tube of the present utility model;
Figure 11 is the compacting flow sheet equipment schematic diagram of online tubulation processing technology middle tube body of the present utility model.
The specific embodiment
Be described further below with reference to the technique effect of accompanying drawing, to understand the purpose of this utility model, feature and effect fully design of the present utility model, concrete structure and generation.
Embodiment 1:
As shown in Figure 5, band straight length of the present invention abnormity heat exchanger tube 1 is one to have the metal welded tube of certain-length, as austenitic stainless steel welded tube, carbon steel welded tube, titanium or titanium alloy welded tube, nickel and nickel alloy welded tube, or austenite-ferrite dual phase steel welded tube etc.
The inside and outside surface of body 2 is smooth surface, is connected to form by a plurality of curved surfaces, and an end of band straight length abnormity heat exchanger tube 1 also comprises a straight length 4.
The inside of body 2 forms the medium channel of heat transferring medium circulation.
As shown in Figure 6, the main part of body 2 has special-shaped tube wall, and medium channel is divided into a plurality of peripheral heat transfer zone 31 and a center heat transfer zone 32.The cross-sectional area of a plurality of peripheral heat transfer zone 31 is roughly the same with the cross-sectional area of center heat transfer zone 32 respectively.
Herein, described " roughly the same " not strict identical.As long as make the cross-sectional area of center heat transfer zone 32 be not more than 3 times of cross-sectional area of peripheral heat transfer zone 31, or be not less than 1/3 the getting final product of cross-sectional area of peripheral heat transfer zone 31.
Particularly, body 2 in the present embodiment is to adopt press process technology to form by the metal welded tube of a circle, 4 curved surfaces are the continuous cold rolling machined surface that body 2 obtains through press process, corner by 4 circular arcs between 4 continuous curved surfaces connects, and each curved surfaces is a cold rolling machined surface.
The corner of circular arc will have certain radian, and according to the difference of body 2 diameters, preferably adopting knuckle radius is the 2-10 millimeter.Avoided the existence of sharp comer like this.
From shape of cross section, present embodiment middle tube body 2 is connected to form by four curved surfaces, such band straight length abnormity heat exchanger tube 1 is when doing heat exchange, the heat exchange efficiency of four peripheral heat transfer zone 31 and a center heat transfer zone 32 is all than higher, particularly the heat transferring medium in the center heat transfer zone 32 also participates in the heat transfer process fully, has improved the heat exchange efficiency of band straight length abnormity heat exchanger tube 1 widely.
As the body in the present embodiment 2, the beneficial effect of concaved circular cambered surface is in adopting, and not only can improve the heat exchange area of band straight length abnormity heat exchanger tube 1 significantly, has improved the heat exchange efficiency of band straight length abnormity heat exchanger tube 1; Can also strengthen the flow and the flow velocity of heat transferring medium in the center heat transfer zone 32, also improve the heat exchange efficiency of band straight length abnormity heat exchanger tube 1.Further, also improve the stress of band straight length abnormity heat exchanger tube 1 under the heat transferring medium effect, strengthened the rigidity of body 2.
Band straight length of the present utility model abnormity heat exchanger tube is not also owing to have cold working after the tubulation moulding, so internal structure stress eliminates substantially, and anti-fouling tendency, corrosion resistance are better.
The utility model also has simple in structure, and cost is low, makes more beneficial effect such as facility.
Heat exchanger tube of the prior art has particular external surface shape (such as spiral, T groove, ripple) mostly, and when making heat exchange equipment, being connected of heat exchanger tube of the prior art and tube sheet must the increase linkage section; And band straight length abnormity heat exchanger tube of the present utility model has smooth outer surface, is more suitable for the manufacturing technology of traditional heat exchangers, is much higher than existing four big class heat exchanger tubes in its projected life and service life.
According to client's needs, the entire length of band straight length abnormity heat exchanger tube of the present utility model can be chosen between ten several meters at 0 meter.Certainly, if the reasonable disposition heat-treatment furnace, the entire length of band straight length of the present utility model abnormity heat exchanger tube can also be in random length, and is not subject to the specification of cold working equipment.
Embodiment 2:
As shown in Figure 7, the band straight length abnormity heat exchanger tube 1 of present embodiment is basic identical with the structure of the foregoing description, all comprises a body 2, and institute's difference is, the cross section of body 2 is a polygon and the combining of arc, and has formed 4 peripheral heat transfer zone 31 and 1 center heat transfer zone 32 equally.
Present embodiment has and the essentially identical technique effect of the foregoing description.
Embodiment 3:
As shown in Figure 8, the structure of present embodiment and embodiment 1 is basic identical, and institute's difference is that the shape of cross section of body 2 is a triangle, has formed 3 peripheral heat transfer zone 31 and 1 center heat transfer zone 32 in body 2.
Present embodiment can be realized technique effect substantially the same manner as Example 1.
Embodiment 4:
As shown in Figure 9, the structure of present embodiment and embodiment 1 is basic identical, and institute's difference is that body 2 is the triangle of root face, or is called a kind of hexagon of abnormity, has formed 3 peripheral heat transfer zone 31 and 1 center heat transfer zone 32 in body 2.
Embodiment 5:
As shown in figure 10, the structure of present embodiment and embodiment 1 is basic identical, and institute's difference is that body 2 is a pentagon, is formed with 5 peripheral heat transfer zone and 1 center heat transfer zone.
Among the various embodiment of band straight length of the present utility model abnormity heat exchanger tube, a kind of heat transferring medium that can only circulate in the band straight length abnormity heat exchanger tube, with other outer Medium Exchange heats of band straight length abnormity heat exchanger tube.
The online tubulation processing technology of band straight length abnormity heat exchanger tube 1 of the present utility model below is described, comprises at least:
In the present embodiment, body 2 is the metal welded tube, and its cross section is connected to form by four curved surfaces.In conjunction with shown in Figure 11, body 2 obtains by press process technology.
Press device mainly comprises a series of support 401,402,403,404, be respectively arranged with top roll 411,412,413,414 and lower roll 421,422,423,424 on each support, also be respectively arranged with a series of left roller, right roller (not shown) in the both sides of body 2.All be provided with on each Kun or be formed with a series of progressively the distortion special-shaped pressing molds.
By progressively distortion of four sides extruding, need to obtain the body 2 of profile.
Press in the process that arcs are shaped the corner of four circular arcs that can also leave between four curved surfaces at body 2.Four corners are set have avoided the existence of sharp comer.
In other embodiments, can also make two ends end face and its axis normal of band straight length abnormity heat exchanger tube, and remove the otch burr by a spot of cold working.
The main body of on-line machining equipment is a prior art, just according to the shape needs of band straight length abnormity heat exchanger tube, has designed a series of special-shaped pressing mold according to conventional method.
Therefore above-mentioned processing method of the present utility model can be used for processing the band straight length abnormity heat exchanger tube among the arbitrary embodiment of the utility model, all has identical beneficial effect.
In sum, described in this specification is several preferred embodiment of the present utility model, and above embodiment is only unrestricted in order to the explanation the technical solution of the utility model.All technical staff in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be within claim protection domain of the present utility model.
Claims (6)
1. a band straight length abnormity heat exchanger tube comprises body at least, and surrounds the medium channel that forms by described body; It is characterized in that: described body has special-shaped tube wall, and described special-shaped tube wall is divided into a plurality of peripheral heat transfer zone and a center heat transfer zone with described medium channel; The cross-sectional area of a plurality of described peripheral heat transfer zone is roughly the same with the cross-sectional area of described center heat transfer zone respectively; Described body comprises a straight length at least.
2. band straight length abnormity heat exchanger tube as claimed in claim 1, it is characterized in that: described special-shaped tube wall is connected to form by a plurality of curved surfaces.
3. band straight length abnormity heat exchanger tube as claimed in claim 2, it is characterized in that: described a plurality of curved surfaces are the continuous cold rolling machined surface that described body obtains through press process.
4. band straight length abnormity heat exchanger tube as claimed in claim 1, it is characterized in that: described special-shaped tube wall is connected with described straight length is smooth.
5. as the arbitrary described band straight length abnormity heat exchanger tube of claim 1 to 4, it is characterized in that: described body is the metal welded tube.
6. as the arbitrary described band straight length abnormity heat exchanger tube of claim 1 to 4, it is characterized in that: the linearly or helical form of described body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206955352U CN201974085U (en) | 2010-12-31 | 2010-12-31 | Special-shaped heat exchange tube with straight tube segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206955352U CN201974085U (en) | 2010-12-31 | 2010-12-31 | Special-shaped heat exchange tube with straight tube segment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201974085U true CN201974085U (en) | 2011-09-14 |
Family
ID=44579186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206955352U Expired - Fee Related CN201974085U (en) | 2010-12-31 | 2010-12-31 | Special-shaped heat exchange tube with straight tube segment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201974085U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022945A (en) * | 2010-12-31 | 2011-04-20 | 上海科米钢管有限公司 | Special heat exchange tube with straight tube section and online tube machining process thereof |
| CN104110987A (en) * | 2014-08-01 | 2014-10-22 | 兰州交通大学 | Streamline iso-amplitude parabolic wavy fin for round tube fin heat exchanger |
-
2010
- 2010-12-31 CN CN2010206955352U patent/CN201974085U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022945A (en) * | 2010-12-31 | 2011-04-20 | 上海科米钢管有限公司 | Special heat exchange tube with straight tube section and online tube machining process thereof |
| CN104110987A (en) * | 2014-08-01 | 2014-10-22 | 兰州交通大学 | Streamline iso-amplitude parabolic wavy fin for round tube fin heat exchanger |
| CN104110987B (en) * | 2014-08-01 | 2016-01-06 | 兰州交通大学 | Circular pipe pipe fin heat exchanger is streamlined waits wave amplitude parabolical corrugated fin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102032827A (en) | Process for processing heating jacket of heat exchange pipe | |
| CN201885618U (en) | Heat exchange tube | |
| CN202002532U (en) | Special-shaped heat exchange tube | |
| CN202109802U (en) | Spiral oval heat exchange tube | |
| CN102022944A (en) | Special heat exchange tube and online tube machining process thereof | |
| CN201974085U (en) | Special-shaped heat exchange tube with straight tube segment | |
| CN102230754A (en) | Heat exchange pipe and on-line pipe-making processing technique thereof | |
| CN106903197A (en) | A kind of preparation method and application of high pressure resistant outer expanding helical bellows enhanced heat transfer component | |
| CN202109804U (en) | Elliptical heat exchange pipe | |
| CN102297623A (en) | Spiral and flat heat exchange tube and online tube machining process thereof | |
| CN202109806U (en) | Spiral flat heat exchange pipe | |
| CN202119313U (en) | Flat heat exchange pipe | |
| CN202109788U (en) | Heat exchange equipment adopting spiral oval heat exchange tubes | |
| CN102095327A (en) | Heat exchange equipment using irregular-shaped heat exchange tubes | |
| CN201876166U (en) | Heat exchange tube with hole | |
| CN202109805U (en) | Elliptical spiral heat exchange tube | |
| CN202109803U (en) | Flat shape spiral heat exchange tube | |
| CN202109789U (en) | Heat exchange device using elliptic spiral heat exchange pipes | |
| CN202109787U (en) | Heat exchange device utilizing flat-shaped spiral heat exchange pipes | |
| CN102297618A (en) | Oval heat exchange tube and online tube machining process thereof | |
| CN202002531U (en) | Heat exchange device applying straight tube section special-shaped heat exchange tubes | |
| CN102297622A (en) | Spiral and oval heat exchange tube and online tube machining process thereof | |
| CN101386122A (en) | Manufacture method of multiple straight fin heat exchange tube | |
| CN102297628A (en) | Flat and spiral heat exchange tube and online tube machining process thereof | |
| CN102338586A (en) | Flat-shaped heat exchange tube and online tube manufacturing and machining technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Lu Xiufeng Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Kemi Steel Tube Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20131231 |