CN104406430A - Winding tubular heat exchanger provided with vertical partition plate in cavity - Google Patents
Winding tubular heat exchanger provided with vertical partition plate in cavity Download PDFInfo
- Publication number
- CN104406430A CN104406430A CN201410696922.0A CN201410696922A CN104406430A CN 104406430 A CN104406430 A CN 104406430A CN 201410696922 A CN201410696922 A CN 201410696922A CN 104406430 A CN104406430 A CN 104406430A
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- CN
- China
- Prior art keywords
- cavity
- heat exchanger
- tubular heat
- housing
- wrap
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
- F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/72—Processing device is used off-shore, e.g. on a platform or floating on a ship or barge
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a winding tubular heat exchanger provided with a vertical partition plate in a cavity. The winding tubular heat exchanger comprises a housing and a central barrel. The central barrel is arranged in the cavity of the housing to form an annular cavity. A plurality of winding tubes are winded in the annular cavity. A plurality of metal pore plates are arranged in the annular cavity and are vertically arranged in the annular cavity, and the winding tubes penetrate through the through holes formed in the metal pore plates. One end of each metal pore plate is connected to the inner wall of the housing, and the other end of each metal pore plate is connected to the outer wall of the central barrel. A gas-liquid even distributing device is arranged in the cavity between the metal pore plates and the top of the housing. The metal pore plates are vertically arranged in the cavity, so that one whole cavity is divided into a plurality of independent cavities, and refrigerants in the independent cavities do not flow into other cavities. Therefore, it can be ensured that liquid films of the housing-side refrigerants flowing into the independent cavities and an in-tube working medium inside the cavities perform full heat exchange, and the phenomenon that the refrigerants flow into other independent cavities due to hull inclination and then invalid heat exchange inside the original cavities is caused is avoided.
Description
Technical field
The present invention relates to the wrap-round tubular heat exchanger that vertical clapboard is set in a kind of cavity, belong to low-temperature heat exchange technical field.
Background technology
Wrap-round tubular heat exchanger is the main cryogenic heat exchanger of first-selection of Large marine natural gas floating platform.According to statistics, the Large marine natural gas floating platform of 90% have employed wrap-round tubular heat exchanger.Wrap-round tubular heat exchanger is entwined around central tube by multi-layer tube, and every layer separates with metal filler strip between pipe, will be restrained in the cavity that is fixed on layer by layer between central tube and external shell by the effect of welding of clip and filler strip.In pipe, thermal medium and the interior cold medium flowed of cavity carry out heat exchange.Described by this wrap-round tubular heat exchanger has in following open file: Hausen/Linde, cryogenic technique, the second edition in 1985,471-475 page; Gu Anzhong, LNG Technology handbook, the first edition in 2012,484-485 page.In above-mentioned disclosed document, the shell-side of wrap-round tubular heat exchanger is all complete cavitys, and wherein shell-side cryogen can free flow.When wrap-round tubular heat exchanger is applied to floating platform on sea, the angle of inclination that sea is rocked can cause shell-side cryogen to occur the situation of two-phase skewness, and consistent with incline direction has liquid film to cover around pipe outer wall, is liquid film district, opposite side does not have liquid film to cover around pipe outer wall, is evaporate to dryness district.It is not obvious at cavity top that this shell-side liquid film that hull tilts to cause when being rocked by sea distributes uneven situation, but in the middle part of cavity and bottom clearly.Research shows, the liquid film of shell-side distributes the uneven hydraulic performance decline 30% that can cause heat exchanger, can cause whole heat exchanger failure under serious conditions.
Through finding the literature search of prior art, occur distributing uneven Curve guide impeller for existing wrap-round tubular heat exchanger shell-side liquid film, if Chinese Patent Application No. is 200580028572.X, patent name has the wrap-round tubular heat exchanger of the distributor of dispense liquid for the middle shell-side described in " coiled heat exchanger ".Coiled heat exchanger described in this invention has the distributor distributing liquid in space outerpace, the gas-liquid being conducive to reducing shell-side cavity top entry place distributes uneven situation, but can not solve sea and to rock under operating mode in the middle part of shell-side cavity and the gas-liquid of bottom distributes uneven problem.
Summary of the invention
The object of this invention is to provide the wrap-round tubular heat exchanger that vertical clapboard is set in a kind of cavity, the present invention replaces traditional metallic gasket by arranging vertical metal perforated plate in the shell-side inside cavity of existing wrap-round tubular heat exchanger, whole cavity is separated into several individual cavity, cryogen between each individual cavity can not free flow, at individual cavity flows downward inside, the bad heat-exchanging state being rocked enclosure interior local evaporate to dryness and the local hydrops caused by sea can only be avoided.
Arrange the wrap-round tubular heat exchanger of vertical clapboard in cavity provided by the present invention, it comprises housing and central tube; Described central tube is arranged in the cavity of described housing, is formed with ring cavity; Be wound with some around pipe in described ring cavity;
Several metal perforated plates are provided with in described ring cavity; Described metal perforated plate is vertically arranged in described ring cavity, described around pipe through the through hole on described metal perforated plate; One end of described metal perforated plate is connected to the inwall of described housing, and the other end is connected to the outer wall of described central tube;
A gas-liquid uniform distributer is provided with in cavity between the top of described metal perforated plate and described housing.
In described wrap-round tubular heat exchanger, described metal perforated plate is arranged symmetrically with along the circumference of described central tube.
In described wrap-round tubular heat exchanger, the thickness of described metal perforated plate is 1mm ~ 3mm, the size of the through hole that it is arranged is determined by the described external diameter around pipe: the aperture linear array arrangement on orifice plate, the horizontal spacing in aperture equals the radial spacing of each layer between pipe, the longitudinal pitch in aperture equals the adjacent axial spacing between pipe of same layer, thus is fixed right through each through hole around pipe described in enabling.
In described wrap-round tubular heat exchanger, the described external diameter around pipe is 5mm ~ 30mm.
In described wrap-round tubular heat exchanger, described metal perforated plate and described housing and described central tube are and are welded and fixed, and improve intensity.
When using wrap-round tubular heat exchanger of the present invention, shell-side cryogen flows in each individual cavity of being separated out by the described metal perforated plate vertically arranged from housing upper through described gas-liquid uniform distributer, flow down around pipe outer wall falling liquid film along described from top to bottom, finally flow out from the bottom of this heat exchanger; Tube fluid enters after this heat exchanger and described flow from bottom to top, carry out heat exchange by the cryogen around tube wall face and shell-side along each around inside pipe wall, finally from the outflow of this heat exchanger top, achieves the heat exchange between fluid and cryogen.
Compared with existing wrap-round tubular heat exchanger, the present invention is by vertically arranging metal perforated plate in inside cavity, complete cavity is separated into several individual cavity, and the cryogen of each individual cavity inside can not flow in other cavitys, therefore can ensure the liquid film of the shell-side cryogen entering this individual cavity and the abundant heat exchange of intraductal working medium of this inside cavity, can not flow in other individual cavity because of the inclination of hull and cause former inside cavity heat exchange to be lost efficacy.Rock by installing metal partion (metp) additional under operating mode at sea, the coverage rate in liquid film district improves more than at least 20%, and mean that the effective heat exchange area of heat exchanger improves 20%, therefore overall heat exchange performance also improves more than 20%.In addition, all fixing through metal perforated plate around Guan Junxu in the present invention, metal perforated plate and central tube are together with case weld, and the strength stress that can bear is higher, are applicable to sea and rock operating mode.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wrap-round tubular heat exchanger arranging vertical clapboard in cavity of the present invention.
The comparison diagram of effect under Fig. 2 to be the wrap-round tubular heat exchanger (right figure) that arranges vertical clapboard in cavity of the present invention with existing wrap-round tubular heat exchanger (left figure) at sea rock operating mode.
In figure, each mark is as follows:
1 around pipe, 2 metal perforated plates, 3 central tubes, 4 housings, 5 gas-liquid uniform distributers.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, but the present invention is not limited to following examples.
As shown in Figure 1, for arranging the wrap-round tubular heat exchanger of vertical clapboard in cavity of the present invention, it comprises housing 1 and central tube 3, and wherein central tube 3 is arranged in the cavity of housing 1, defines a ring cavity.Many are wound with around pipe 1, for passing into fluid in this ring cavity.In this ring cavity, be provided with multiple metal perforated plate 2, it is vertically arranged in ring cavity and centrally the circumference of cylinder 3 is arranged symmetrically with, and each layer is fixed through the through hole on each metal perforated plate 2 around pipe 1.One end of metal perforated plate 2 is welded on the inwall of housing 4, and the other end is welded on the outer wall of central tube 3, enhances its intensity.A gas-liquid uniform distributer 5 is provided with, for distributing cryogen in cavity between metal perforated plate 2 and the top of housing 4.
In above-mentioned wrap-round tubular heat exchanger, the external diameter around pipe 1 can adjust in the scope of 5mm ~ 30mm.
In above-mentioned wrap-round tubular heat exchanger, the thickness of metal perforated plate 2 can adjust in the scope of 1mm ~ 3mm, and the size of the through hole that it is arranged is determined by the external diameter around pipe 1: the aperture linear array arrangement on orifice plate, the horizontal spacing in aperture equals the radial spacing of each layer between pipe, the longitudinal pitch in aperture equals the adjacent axial spacing between pipe of same layer, thus makes to be fixed right through each through hole around pipe 1.
During application wrap-round tubular heat exchanger of the present invention, shell-side cryogen flows in each individual cavity of being separated out by vertical metal perforated plate 2 from housing 4 top through gas-liquid uniform distributer 5, flows down from top to bottom, finally flow out from the bottom of this heat exchanger along around pipe 1 outer wall falling liquid film; Tube fluid to enter after this heat exchanger along each around pipe 1 inwall, flows from bottom to top, carries out heat exchange by the cryogen around pipe 1 wall and shell-side, finally flow out from the top of this heat exchanger, achieve the heat exchange to fluid.
The effect of the wrap-round tubular heat exchanger and existing wrap-round tubular heat exchanger that arrange vertical clapboard in cavity of the present invention contrasts schematic diagram as shown in Figure 2, wherein in Fig. 2, left figure is the effect schematic diagram of existing wrap-round tubular heat exchanger, in Fig. 2, right figure is the effect schematic diagram of wrap-round tubular heat exchanger of the present invention, contrast these two figure known, the present invention is by vertically arranging metal perforated plate 2 in inside cavity, complete cavity is separated into several individual cavity, and the cryogen of each individual cavity inside can not flow in other cavitys, therefore the liquid film of the shell-side cryogen entering this individual cavity and the abundant heat exchange of intraductal working medium of this inside cavity can be ensured, can not flow in other individual cavity because of the inclination of hull causes former inside cavity heat exchange to be lost efficacy.
Through reality test, rock by installing metal perforated plate 2 additional under operating mode at sea, the coverage rate in liquid film district improves more than at least 20%, and mean that the effective heat exchange area of heat exchanger improves 20%, therefore overall heat exchange performance also improves more than 20%.
In addition, allly in the present invention all need to be fixed through the through hole on metal perforated plate 2 around pipe 1, metal perforated plate 2 all welds together with central tube 3 and housing 4, and the strength stress that can bear is higher, is applicable to sea and rocks operating mode.
Claims (5)
1. a wrap-round tubular heat exchanger for vertical clapboard is set in cavity, it is characterized in that: it comprises housing and central tube; Described central tube is arranged in the cavity of described housing, is formed with ring cavity; Be wound with some around pipe in described ring cavity;
Several metal perforated plates are provided with in described ring cavity; Described metal perforated plate is vertically arranged in described ring cavity, described around pipe through the through hole on described metal perforated plate; One end of described metal perforated plate is connected to the inwall of described housing, and the other end is connected to the outer wall of described central tube;
A gas-liquid uniform distributer is provided with in cavity between the top of described metal perforated plate and described housing.
2. wrap-round tubular heat exchanger according to claim 1, is characterized in that: described metal perforated plate is arranged symmetrically with along the circumference of described central tube.
3. wrap-round tubular heat exchanger according to claim 1 and 2, is characterized in that: the thickness of described metal perforated plate is 1mm ~ 3mm.
4. the wrap-round tubular heat exchanger according to any one of claim 1-3, is characterized in that: the described external diameter around pipe is 5mm ~ 30mm.
5. the wrap-round tubular heat exchanger according to any one of claim 1-4, is characterized in that: described metal perforated plate and described housing and described central tube are and are welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410696922.0A CN104406430A (en) | 2014-11-26 | 2014-11-26 | Winding tubular heat exchanger provided with vertical partition plate in cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410696922.0A CN104406430A (en) | 2014-11-26 | 2014-11-26 | Winding tubular heat exchanger provided with vertical partition plate in cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104406430A true CN104406430A (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410696922.0A Pending CN104406430A (en) | 2014-11-26 | 2014-11-26 | Winding tubular heat exchanger provided with vertical partition plate in cavity |
Country Status (1)
| Country | Link |
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| CN (1) | CN104406430A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674771A (en) * | 2016-01-22 | 2016-06-15 | 江苏中圣高科技产业有限公司 | Uniform distributor regulation and control type wound tube heat exchanger |
| CN105674773A (en) * | 2016-01-25 | 2016-06-15 | 牛玉振 | Winding type heat exchanger for LNG refrigerator |
| CN106123639A (en) * | 2016-08-08 | 2016-11-16 | 中国海洋石油总公司 | The wrap-round tubular heat exchanger of cylinder dividing plate and AND DEWATERING FOR ORIFICE STRUCTURE is set in a kind of housing |
| CN106524789A (en) * | 2016-11-14 | 2017-03-22 | 上海交通大学 | Core shell separated wound tube heat exchanger |
| CN106547944A (en) * | 2016-09-27 | 2017-03-29 | 大连理工大学 | A kind of dividing plate optimization method for suppressing compressible two phase flow to rock |
| CN108131963A (en) * | 2017-12-13 | 2018-06-08 | 西安交通大学 | A kind of ellipse cast wrap-round tubular heat exchanger |
| CN109029052A (en) * | 2018-08-29 | 2018-12-18 | 上海理工大学 | The tube bundle support structure of vertical wound tube heat exchanger |
| CN113446894A (en) * | 2021-04-19 | 2021-09-28 | 中国矿业大学 | Refrigerant distribution device of wound heat exchanger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3496997A (en) * | 1966-04-01 | 1970-02-24 | Sulzer Ag | Heat exchanger of tubular construction |
| JPS5443650U (en) * | 1977-08-31 | 1979-03-26 | ||
| JPS6129688A (en) * | 1984-07-20 | 1986-02-10 | Hitachi Ltd | Heat exchanging device |
| JPH07181291A (en) * | 1993-12-22 | 1995-07-21 | Ishikawajima Harima Heavy Ind Co Ltd | Helical coil type heat exchanger |
| CN101160501A (en) * | 2005-04-15 | 2008-04-09 | 杰齐·哈拉内克 | Axial heat exchanger |
| CN204404855U (en) * | 2014-11-26 | 2015-06-17 | 中国海洋石油总公司 | The wrap-round tubular heat exchanger of vertical clapboard is set in a kind of cavity |
-
2014
- 2014-11-26 CN CN201410696922.0A patent/CN104406430A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3496997A (en) * | 1966-04-01 | 1970-02-24 | Sulzer Ag | Heat exchanger of tubular construction |
| JPS5443650U (en) * | 1977-08-31 | 1979-03-26 | ||
| JPS6129688A (en) * | 1984-07-20 | 1986-02-10 | Hitachi Ltd | Heat exchanging device |
| JPH07181291A (en) * | 1993-12-22 | 1995-07-21 | Ishikawajima Harima Heavy Ind Co Ltd | Helical coil type heat exchanger |
| CN101160501A (en) * | 2005-04-15 | 2008-04-09 | 杰齐·哈拉内克 | Axial heat exchanger |
| CN204404855U (en) * | 2014-11-26 | 2015-06-17 | 中国海洋石油总公司 | The wrap-round tubular heat exchanger of vertical clapboard is set in a kind of cavity |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674771A (en) * | 2016-01-22 | 2016-06-15 | 江苏中圣高科技产业有限公司 | Uniform distributor regulation and control type wound tube heat exchanger |
| CN105674771B (en) * | 2016-01-22 | 2018-02-13 | 江苏中圣高科技产业有限公司 | Uniform device regulation type wound tube heat exchanger |
| CN105674773B (en) * | 2016-01-25 | 2019-03-26 | 牛玉振 | Coiled heat exchanger for LNG ice chest |
| CN105674773A (en) * | 2016-01-25 | 2016-06-15 | 牛玉振 | Winding type heat exchanger for LNG refrigerator |
| CN106123639A (en) * | 2016-08-08 | 2016-11-16 | 中国海洋石油总公司 | The wrap-round tubular heat exchanger of cylinder dividing plate and AND DEWATERING FOR ORIFICE STRUCTURE is set in a kind of housing |
| CN106123639B (en) * | 2016-08-08 | 2018-04-06 | 中国海洋石油总公司 | Cylinder dividing plate and the wrap-round tubular heat exchanger of AND DEWATERING FOR ORIFICE STRUCTURE are set in a kind of housing |
| CN106547944A (en) * | 2016-09-27 | 2017-03-29 | 大连理工大学 | A kind of dividing plate optimization method for suppressing compressible two phase flow to rock |
| CN106547944B (en) * | 2016-09-27 | 2019-06-25 | 大连理工大学 | A kind of partition optimization method for inhibiting compressible two phase flow to rock |
| CN106524789A (en) * | 2016-11-14 | 2017-03-22 | 上海交通大学 | Core shell separated wound tube heat exchanger |
| CN106524789B (en) * | 2016-11-14 | 2018-11-20 | 上海交通大学 | The wound tube heat exchanger of core shell separation |
| CN108131963A (en) * | 2017-12-13 | 2018-06-08 | 西安交通大学 | A kind of ellipse cast wrap-round tubular heat exchanger |
| CN109029052A (en) * | 2018-08-29 | 2018-12-18 | 上海理工大学 | The tube bundle support structure of vertical wound tube heat exchanger |
| CN113446894A (en) * | 2021-04-19 | 2021-09-28 | 中国矿业大学 | Refrigerant distribution device of wound heat exchanger |
| CN113446894B (en) * | 2021-04-19 | 2022-06-07 | 中国矿业大学 | Refrigerant distribution device of wound heat exchanger |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |
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| RJ01 | Rejection of invention patent application after publication |