CN102927837A - Heat exchanger structure - Google Patents
Heat exchanger structure Download PDFInfo
- Publication number
- CN102927837A CN102927837A CN2012104321002A CN201210432100A CN102927837A CN 102927837 A CN102927837 A CN 102927837A CN 2012104321002 A CN2012104321002 A CN 2012104321002A CN 201210432100 A CN201210432100 A CN 201210432100A CN 102927837 A CN102927837 A CN 102927837A
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- China
- Prior art keywords
- heat exchanger
- tube
- tracheae
- tubes
- casing
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a heat exchanger structure which comprises a closed casing and multiple heat exchange tubes arranged in the casing. Two ends of each heat exchange tube are respectively limited on a first tube plate and a second tube plate, and the first tube plate and the second tube plate are parallelly arranged in the casing. The heat exchanger structure is characterized in that the heat exchange tubes form multiple layers of helix tubes which are sequentially arranged in a sleeved mode at intervals, first air tubes are further and spirally coiled in each layer of helix tubes in the same direction, a plurality of first air holes are distributed on tube walls of the first air tubes facing the bottom of the casing, and air inlets and air outlets of the first air tubes are communicated with an outside air source. Compared with the prior art, the first air tubes are arranged in the casing, so that the all-around disturbance can be internally performed to a fluid in the casing side, fluid media can be mixed and be continuously even gradually even under the conditions that the fluid media are dirty and sticky and the tube spacing and the layer spacing are tight, the fluid deposition in the casing is effectively avoided, the heat transfer efficiency is improved, the heat exchange effect is improved, and cleaning, blowing, sweeping and maintenance of a device are facilitated.
Description
Technical field
The present invention relates to the chemical industry equipment field, specifically refer to a kind of heat exchanger structure.
Background technology
Under the overall background of energy-saving and emission-reduction and crude oil in poor quality, the stock media that the cold exchange devices such as heat exchanger stand is generally all dirtier, more sticking, dirtier sticking medium is upper outside except meeting deposits to the heat exchanger inwall when flowing through heat exchanger, importantly can exert an influence to flowability and the Flow Field Distribution uniformity of medium in heat exchanger; Enter respectively heat exchanger shell pass if the heat exchanger shell pass medium is gas, liquid two-phase and gas, liquid two-phase from two mouths of pipe, the medium of so large viscosity certainly will affect the even mixability of two-phase medium.Mix inequality and not only can make fluid produce bias current, more can affect the heat exchange efficiency of heat exchanger, heat transfer effect can't satisfy technological requirement, thereby the long period even running of the equipment of giving brings hidden danger.Be simultaneously the heat exchange efficiency of raising equipment, the layout of the heat exchanger components such as tube bank is all comparatively tight, and spacing is often all less, and it is uneven also can to cause the heat exchanger shell pass fluid to mix, and affects heat exchange efficiency.
Summary of the invention
Technical problem to be solved by this invention is the present situation for prior art, provide a kind of can stable operation, the cycle is long and heat exchange efficiency good, heat exchanger structure applied widely.
The present invention solves the problems of the technologies described above the technical scheme that adopts: this heat exchanger structure, comprise the housing of sealing and be arranged on many interior heat exchanger tubes of described housing, the two ends of each described heat exchanger tube are spacing on the first tube sheet and the second tube sheet respectively, and described the first tube sheet and the second tube sheet are set in parallel in the described housing; It is characterized in that each described heat exchanger tube consists of multi-layer helix-tube, each helical layer pipe successively internal and external partition is nested with, in every helical layer pipe also in the same way helical disk be wound with the first tracheae, each described first tracheae is distributed with a plurality of the first pores on the tube wall of described housing bottom, the air inlet of each described the first tracheae and gas outlet all are communicated with extraneous source of the gas.
As improvement, can be in the described helix tube of each layer in the same way helical disk be wound with the second tracheae, each described second tracheae is distributed with a plurality of the second pores on the tube wall of described case top, the air inlet of each described the second tracheae and gas outlet all are communicated with extraneous source of the gas, and are provided with valve between the second tracheae and the extraneous source of the gas.This structure can be when system pressure drop or warm end temperature difference have obvious rising selectively unlocking, reach the effect of strengthening disturbance.
Preferably, the percent opening of described the second tracheae is 2%-10%, and evenly distributes, and has preferably disturbance effect this moment.
In order to guarantee heat transfer effect, the hand of spiral of the described helix tube of adjacent layer is opposite.
In above-mentioned each scheme, preferably, the percent opening of described the first pore is 2%-10% and evenly distributes that in like manner such open-celled structure has preferably disturbance effect.
According to the heat exchange needs, can include the many in the same way heat exchanger tubes of coiled coil in every layer of described helix tube, certainly, every helical layer pipe also can be only with a heat exchanger tube coiled coil.
Can also comprise a core body, this core body is between described the first tube sheet and the second tube sheet, and two ends are supported on respectively on described the first tube sheet and the second tube sheet above-mentioned each helical layer pipe coiled coil centered by this core body, make after each helical layer pipe coiling more stable, and convenient the installation.
Compared with prior art, the present invention is provided with the first tracheae in housing, it can carry out online disturbance to the fluid in the shell side internally, and it is inner that the first tracheae is arranged in whole helical bundle, area coverage is large, process gas is 3 D stereo in each pore, netted form ejection, shell-side fluid is carried out omnibearing disturbance, even dirtier at fluid media (medium), glue and even tube pitch, interlamellar spacing is all very closely in the situation, fluid media (medium) is mixed constantly be tending towards even, effectively avoid the deposition of fluid in housing, improved heat transfer efficiency, improved heat transfer effect; When especially the heat transferring medium in shell side was the two-phase blending agent, its heat exchanging medium can play the effect of further mixing, avoided producing bias current, had effectively guaranteed the long period even running of equipment.Simultaneously, two tracheaes provided by the present invention can also use as scavenging conduit when the equipment shutdown maintenance, purge effective, effectively reduction equipment stops up the possibility that lost efficacy, the impurity sedimentation space of cooperating equipment bottom and manhole use can remove the impurity that common purging structure in the past can't be removed, and especially is suitable for cleaning, purging and maintenance in the non-dismountable heat exchange equipment.
And heat exchanger tube adopts the structure that is nested with inside and outside the spiral, can guarantee that the material of various viscosity is abundant, evenly mix, and good mixing effect can further improve heat exchange efficiency.
Description of drawings
Fig. 1 is the floor map of embodiment of the invention assembly structure;
Fig. 2 is the planar structure schematic diagram of the first (the second) tracheae in the embodiment of the invention.
The specific embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, present embodiment describes as an example of vertical heat exchanger example, and technology of the present invention is equally applicable to horizontal heat exchanger.This heat exchanger structure comprises:
Housing 1, be enclosed construction, comprise that upright cylindrical shell 11 and the upper cover (not shown) that is arranged on the cylindrical shell two ends, low head 12 form, the two ends of housing inner barrel also are provided with the first tube sheet (not shown) and the second tube sheet 13 that is parallel to each other, housing is provided with tube side entrance (not shown), tube side outlet 14, shell side gas phase entrance 15, shell side liquid phase entrance 16, shell side outlet (not shown) and condensate drain mouth 17, this condensate drain mouth 17 can be used as inspection manhole when parking maintenance; Also be provided with gas access 18 and gas vent (not shown) on the housing.The first tube sheet (not shown) and the second tube sheet 13 are provided with for the interspersed a plurality of pores that pass through in the two ends of following heat exchanger tube 3.
Core body 2, between the first tube sheet and the second tube sheet, the two ends of core body are supported on respectively on the first tube sheet and the second tube sheet.
Heat exchanger tube 3 has many, and these heat exchanger tubes are divided into many groups, and every group can have a heat exchanger tube, also many heat exchanger tubes can be arranged, and can set according to actual needs.Each organizes the heat exchanger tube helix tube that sheathed successively interval arranges inside and outside the coiled coil formation multilayer centered by core body 2, and the hand of spiral of inside and outside adjacent layer helix tube is opposite in the present embodiment.The arrival end of these heat exchanger tubes and the port of export are communicated with tube side entrance and tube side outlet 14 after passing respectively pore corresponding on the first tube sheet and the second tube sheet 13.The number of plies of helix tube can be set according to the scale of heat exchanger and actual needs, for example can for two-layer, five layers and even more multi-layered.
The first tracheae 4 is used for to the shell side purge gas, under the prerequisite that does not affect warm end temperature difference, the equipment operation is opened often, shell-side fluid is carried out disturbance, make the logistics in the shell side of flowing through form flow-disturbing, thereby improve the mixing situation of shell side inner fluid and stop the deposition of shell-side fluid in housing.The first tracheae 4 coiled coil centered by core body can have many, and its quantity equates with the number of plies of helix tube, namely be provided with first tracheae 4 in every helical layer pipe, and the first tracheae 4 is identical with the hand of spiral of the heat exchanger tube of place layer.The first tracheae is evenly equipped with a plurality of the first pores 41 on the tube wall of housing bottom, only show part the first pore among Fig. 2, in the present embodiment on every the first tracheae the percent opening of the first pore be 7%.Percent opening can specifically be set as the case may be, such as specifically being set between the 2%-10% according to situations such as tube side inner fluid composition, composition, heat exchanger scales; The air inlet of the first tracheae passes gas outlet that the second tube sheet is communicated with gas access 18, the first tracheaes on the housing and passes the first tube sheet and be communicated with gas vent on the housing; And gas access 18 and gas vent all are communicated with extraneous source of the gas, and present embodiment is connected with process gas.
The second tracheae 5 is used for purge gas in the tube side, mainly is to increase or warm end temperature difference selectively unlocking when obviously rising at system pressure drop, and matching with the air-flow that sprays in the first tracheae reaches the effect of strengthening disturbance.The second tracheae 5 also is coiled coil centered by core body, can have many, and its quantity equates with the number of plies of helix tube, namely be provided with second tracheae 5 in every helical layer pipe, and the second tracheae 5 is identical with the hand of spiral of the heat exchanger tube of place layer.The second tracheae is evenly equipped with a plurality of the second pores 51 on the tube wall of case top, in the present embodiment on every the second tracheae the percent opening of the second pore be 7%.Percent opening can be according to actual conditions, and concrete conditions such as shell side inner fluid composition, heat exchanger scale specifically is set between the 2%-10%; The air inlet of the second tracheae passes gas outlet that the second tube sheet is communicated with gas access 18, the second tracheaes on the housing and passes the first tube sheet and be communicated with gas vent on the housing; And be provided with the valve (not shown) of the gas break-make on control the second tracheae, be used for selectively unlocking.
The operation principle of this heat exchanger is as follows:
During the heat exchanger normal operation, the first tracheae 4 is often opened, process gas sprays in each first pore, shell-side fluid is carried out the comprehensive disturbance of 3 D stereo, shell-side fluid is fully mixed, reduce simultaneously dirty thing on each heat exchanger tube surface and possibility that inner walls deposits, effectively improved heat exchange efficiency, guaranteed the long period even running of equipment.
Increase or warm end temperature difference when obviously rising at system pressure drop, open the valve of control the second tracheae, process gas is sprayed in the first pore and the second pore simultaneously, strengthen the disturbance of shell-side fluid, system pressure drop is tended to be steady, warm end temperature difference is balanced.
Under the suspended state, in the time of need to purging shell side, directly process gas or purge gas are blown into by the first pore and the second pore, equipment is purged.And scavenging conduit of the prior art normally is arranged on the bottom of heat exchanger tube, and it is better to purge effect near the zone of bottom purge pipe, and it is relatively poor then to purge effect away from the bottom of scavenging conduit, especially can't remove the dirty thing that is deposited on the heat exchanger tube outer wall.The application's technical scheme has then been avoided this problem fully, and it is large not only to purge area, and purges effectively, does not have simultaneously the dead angle, greatly reduces because the possibility that the heat-exchanging tube bundle that causes lost efficacy is stopped up in the outer fouling of heat exchanger tube.Cooperate inspection manhole to use, can remove the impurity that common purging structure can't be removed.
Under the suspended state, when equipment need to carry out Chemical cleaning, the gas access of housing can be connected the cleaning fluid pipeline, make cleaning fluid pass through to improve like this flow velocity of cleaning fluid from the first pore and the ejection of the second pore, strengthen the effect of Chemical cleaning.
Claims (7)
1. a heat exchanger structure comprises the housing of sealing and is arranged on many interior heat exchanger tubes of described housing, and the two ends of each described heat exchanger tube are spacing on the first tube sheet and the second tube sheet respectively, and described the first tube sheet and the second tube sheet are set in parallel in the described housing; It is characterized in that each described heat exchanger tube consists of multi-layer helix-tube, each helical layer pipe successively internal and external partition is nested with, in every helical layer pipe also in the same way helical disk be wound with the first tracheae, each described first tracheae is distributed with a plurality of the first pores on the tube wall of described housing bottom, the air inlet of each described the first tracheae and gas outlet all are communicated with extraneous source of the gas.
2. heat exchanger structure according to claim 1, it is characterized in that in the described helix tube of each layer that also helical disk is wound with the second tracheae in the same way, each described second tracheae is distributed with a plurality of the second pores on the tube wall of described case top, the air inlet of each described the second tracheae and gas outlet all are communicated with extraneous source of the gas, and are provided with valve between the second tracheae and the extraneous source of the gas.
3. heat exchanger structure according to claim 2, the percent opening that it is characterized in that described the second tracheae is 2%-10%, and evenly distributes.
4. according to claim 1 to the described heat exchanger structure of 3 arbitrary claims, it is characterized in that the hand of spiral of described helix tube of adjacent layer is opposite.
5. heat exchanger structure according to claim 4, the percent opening that it is characterized in that described the first pore is 2%-10%, and evenly distributes.
6. heat exchanger structure according to claim 5 is characterized in that including in every layer of described helix tube the many in the same way heat exchanger tubes of coiled coil.
7. heat exchanger structure according to claim 4, characterized by further comprising a core body, this core body is between described the first tube sheet and the second tube sheet, and two ends are supported on respectively on described the first tube sheet and the second tube sheet above-mentioned each helical layer pipe coiled coil centered by this core body.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104321002A CN102927837A (en) | 2012-11-02 | 2012-11-02 | Heat exchanger structure |
| KR1020157014150A KR101660349B1 (en) | 2012-11-02 | 2013-03-18 | Heat exchanger structure |
| US14/440,325 US20190195566A1 (en) | 2012-11-02 | 2013-03-18 | Heat Exchanger Structure |
| JP2015540015A JP5934845B2 (en) | 2012-11-02 | 2013-03-18 | Heat exchanger structure |
| PCT/CN2013/000307 WO2014067223A1 (en) | 2012-11-02 | 2013-03-18 | Heat exchanger structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104321002A CN102927837A (en) | 2012-11-02 | 2012-11-02 | Heat exchanger structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927837A true CN102927837A (en) | 2013-02-13 |
Family
ID=47642698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104321002A Pending CN102927837A (en) | 2012-11-02 | 2012-11-02 | Heat exchanger structure |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20190195566A1 (en) |
| JP (1) | JP5934845B2 (en) |
| KR (1) | KR101660349B1 (en) |
| CN (1) | CN102927837A (en) |
| WO (1) | WO2014067223A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014067223A1 (en) * | 2012-11-02 | 2014-05-08 | 镇海石化建安工程有限公司 | Heat exchanger structure |
| CN105444593A (en) * | 2015-12-16 | 2016-03-30 | 南京正源搪瓷设备制造有限公司 | PTFE (Polytetrafluoroethylene) heat exchanger |
| CN108160006A (en) * | 2018-02-13 | 2018-06-15 | 镇海石化建安工程有限公司 | Dehydrogenating propane device and dehydrogenating propane method |
| CN108745261A (en) * | 2018-06-04 | 2018-11-06 | 西安交通大学 | A kind of multiple-unit metal hydride accumulation of heat reactor |
| CN113432454A (en) * | 2021-07-14 | 2021-09-24 | 哈尔滨锅炉厂有限责任公司 | Non-circular cross-section double-tube-pass spiral heat exchanger tube bundle structure |
| CN115090250A (en) * | 2022-07-18 | 2022-09-23 | 濮阳市远东科技有限公司 | Propane dehydrogenation reaction device |
| WO2024093271A1 (en) * | 2022-10-31 | 2024-05-10 | 镇海石化建安工程股份有限公司 | Heat exchanger and polysilicon production system using heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091748A (en) * | 2016-08-23 | 2016-11-09 | 关朋伟 | A kind of novel heat exchanger |
| FR3075942B1 (en) * | 2017-12-22 | 2020-07-17 | Axens | COIL HEAT EXCHANGER FOR HYDROTREATMENT OR HYDROCONVERSION |
| FR3075941B1 (en) * | 2017-12-22 | 2021-02-26 | Axens | COIL HEAT EXCHANGER FOR HYDRO-TREATMENT OR HYDROCONVERSION |
| US20210387239A1 (en) * | 2020-06-12 | 2021-12-16 | The Boeing Company | Cleaning systems and methods of use thereof |
| CN111853844A (en) * | 2020-07-03 | 2020-10-30 | 安徽南都华铂新材料科技有限公司 | Waste heat recycling device and using method |
| CN117516216B (en) * | 2023-12-05 | 2024-04-16 | 武汉东海石化重型装备有限公司 | Winding tube type heat exchanger and descaling method thereof |
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- 2012-11-02 CN CN2012104321002A patent/CN102927837A/en active Pending
-
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- 2013-03-18 KR KR1020157014150A patent/KR101660349B1/en active IP Right Grant
- 2013-03-18 WO PCT/CN2013/000307 patent/WO2014067223A1/en active Application Filing
- 2013-03-18 US US14/440,325 patent/US20190195566A1/en not_active Abandoned
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014067223A1 (en) * | 2012-11-02 | 2014-05-08 | 镇海石化建安工程有限公司 | Heat exchanger structure |
| CN105444593A (en) * | 2015-12-16 | 2016-03-30 | 南京正源搪瓷设备制造有限公司 | PTFE (Polytetrafluoroethylene) heat exchanger |
| CN108160006A (en) * | 2018-02-13 | 2018-06-15 | 镇海石化建安工程有限公司 | Dehydrogenating propane device and dehydrogenating propane method |
| CN108160006B (en) * | 2018-02-13 | 2023-11-14 | 镇海石化建安工程股份有限公司 | Propane dehydrogenation device and propane dehydrogenation method |
| CN108745261A (en) * | 2018-06-04 | 2018-11-06 | 西安交通大学 | A kind of multiple-unit metal hydride accumulation of heat reactor |
| CN113432454A (en) * | 2021-07-14 | 2021-09-24 | 哈尔滨锅炉厂有限责任公司 | Non-circular cross-section double-tube-pass spiral heat exchanger tube bundle structure |
| CN115090250A (en) * | 2022-07-18 | 2022-09-23 | 濮阳市远东科技有限公司 | Propane dehydrogenation reaction device |
| WO2024093271A1 (en) * | 2022-10-31 | 2024-05-10 | 镇海石化建安工程股份有限公司 | Heat exchanger and polysilicon production system using heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101660349B1 (en) | 2016-09-27 |
| JP2016500805A (en) | 2016-01-14 |
| KR20150079898A (en) | 2015-07-08 |
| WO2014067223A1 (en) | 2014-05-08 |
| US20190195566A1 (en) | 2019-06-27 |
| JP5934845B2 (en) | 2016-06-15 |
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Application publication date: 20130213 |