CN100386586C - Multiple shell pass screw baffle pipe shell type heat exchanger - Google Patents
Multiple shell pass screw baffle pipe shell type heat exchanger Download PDFInfo
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- CN100386586C CN100386586C CNB2006100419491A CN200610041949A CN100386586C CN 100386586 C CN100386586 C CN 100386586C CN B2006100419491 A CNB2006100419491 A CN B2006100419491A CN 200610041949 A CN200610041949 A CN 200610041949A CN 100386586 C CN100386586 C CN 100386586C
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Abstract
The present invention relates to a multi-shell pass spiral baffle plate shell-and-tube heat exchanger which comprises a shell body, a central tube positioned at the center of the shell body, and two tube plates positioned at both ends of the casing, wherein the tube plates are respectively connected with two end sockets, a tube side inlet tube, a tube side outlet tube, a heat exchange tube bundle, a shell side inlet tube and a shell side outlet tube. A spiral baffle plate is composed of an outer spiral baffle plate and an inner spiral baffle plate, and an inner casing tube is arranged between the outer spiral baffle plate and the inner spiral plate. An outer spiral shell pass is formed by the enclosure of the shell body, the outer spiral baffle plate and the inner casing tube, and an outer spiral shell pass is formed by the enclosure of the inner casing tube, the inner spiral baffle plate and the central tube; thus, the spiral baffle plate shell-and-tube heat exchanger with two shell passes can be formed. The quantity of the inner casing tube is one or more than one, and two spiral shell passes or a plurality of spiral shell passes are formed. The present invention can improve the heat exchange efficiency of the heat exchanger, and enables the structure of the heat exchanger to be more compact, decreases the vibration of the heat exchanger at the time of running, and improves the safety; moreover, the scale formation is not easy, and the service life of the heat exchanger can be extended.
Description
Technical field
The present invention relates to a kind of shell-and-tube heat exchanger that in industry such as oil refining, chemical industry, environmental protection, the energy, electric power, uses, particularly a kind of multi-shell spiral baffle plate shell-and-tube heat exchanger.
Background technology
Heat exchanger is a kind of important unit in the industry such as oil refining, chemical industry, environmental protection, the energy, electric power, shell-and-tube heat exchanger most widely used general.In shell-and-tube heat exchanger, a kind of fluid flows in pipe, and one other fluid flows at shell-side, and carries out exchange heat by tube wall.Simultaneously, shell-side is furnished with deflection plate, and deflection plate is that pipe provides support, also make fluid by specific channel flow to improve its heat-transfer character.
There are a lot of problems in tradition bow type deflection plate: 1. bow type deflection plate makes fluid vertical impact shell wall side, causes bigger along the journey pressure drop; 2. deflection plate and shell wall side joint produce the stagnation dead band of flowing, and have reduced heat exchange efficiency, and fouling easily; 3. there is leakage current between deflection plate and the shell wall side and between heat exchanger tube and the deflection plate, makes shell-side exist bigger bypass to flow.By-pass flow and leakage current have reduced the mass flow of effective cross-flow tube bank, so reduced the heat exchange efficiency of shell-side; 4. the horizontal heat-exchanging tube bundle of plunderring of the fluid of high flow rate can be induced the vibration of heat exchanger tube, has shortened the life-span of heat exchanger.
The sixties in 20th century, existing scholar has proposed the thought of spiral baffle heat exchanger.Spiral baffle heat exchanger is that arrangement of baffles is become helicoid, make in the heat exchanger shell fluid in the shape of a spiral shape flow, to realize reducing effectively the flow resistance of shell-side and the purpose of augmentation of heat transfer.Existing spiral baffle heat exchanger has two classes, one class is to adopt two or the fan-shaped dull and stereotyped discontinuous spiral baffle heat exchanger of forming approximate spiral camber of polylith, discontinuous helical baffles is continuous bridging type (seeing patent 99241930.1) or staggered helical (seeing patent 200320106763.1), and another kind of is the continuous helical deflecting plate heat exchanger (seeing patent 200510043033.5) that adopts the continuous helical curved surface.Existing spiral baffle heat exchanger only can be realized the form of monoshell journey, arranges at identical tube side, under the situation of identical housings range of flow, and the segmental baffle board heat exchangers that its resistance ratios is traditional low, but exchange capability of heat is also low simultaneously, does not often reach user's requirement.That is to say that the maximum feature of this monoshell pass spiral baffle heat exchanger is that the exchange capability of heat under the identical shell side fluid-pressure drop is strong, is applicable to the occasion that the shell-side fluid flow is big.But in fact the shell-side fluid flow is often lower; Or because technological requirement need be arranged as shell-side fluid the pattern of muitishell.
Summary of the invention
In order to overcome above-mentioned weak point, the purpose of this invention is to provide a kind of multi-shell spiral baffle plate shell-and-tube heat exchanger, it can make shell fluid according to more reasonably form is mobile, increase the number of passes of shell-side, improve the mean flow rate of shell fluid, thereby the raising heat exchange efficiency makes heat exchanger structure compact more, and improves heat exchanger service life.
Technical scheme of the present invention is achieved in that a kind of multi-shell spiral baffle plate shell-and-tube heat exchanger, comprise a housing, be positioned at a central tube at housing center, two tube sheets at housing two ends, two tube sheets connect first end socket and second end socket respectively, wherein, first end socket is provided with pipe side-entrance pipe and pipe side outlet pipe, be provided with heat-exchanging tube bundle and helical baffles between two tube sheets, helical baffles is provided with the hole, heat-exchanging tube bundle passes hole secured in parallel on the helical baffles between two tube sheets, first shell-side is installed on housing imports and exports pipe and second shell-side import and export pipe, described helical baffles is divided into external spiral deflection plate and inside spin deflection plate; Be provided with inner sleeve between external spiral deflection plate and the inside spin deflection plate, the external spiral deflection plate is on the same helicoid with the inside spin deflection plate or on the different helicoid; The external spiral passage that is surrounded by housing, external spiral deflection plate and inner sleeve is as the external spiral shell side, the inside spin passage that is surrounded by inner sleeve, inside spin deflection plate and central tube is as the inside spin shell side, the end that inner sleeve is imported and exported pipe at first shell-side is connected with baffle plate, and shell-side is exported fluid to baffle plate and the shell-side inlet fluid is isolated; Inner sleeve is one or more, forms two spiral shell sides or a plurality of spiral shell side, and inner sleeve is reserved with external spiral and middle spiral converting interface and middle spiral and inside spin converting interface.
When described inner sleeve is odd number, realize that the flow process number of shell fluid is an even number, this moment, first shell-side import and export pipe and second shell-side were imported and exported the same end that pipe is arranged in housing.When inner sleeve is even number, realize that the flow process number of shell fluid is an odd number, this moment, first shell-side import and export pipe and second shell-side were imported and exported the two ends that pipe is arranged in housing.
Described first shell-side is imported and exported pipe as the outlet of shell fluid or the import of shell fluid, and second shell-side is imported and exported pipe correspondingly as the import of shell fluid or the outlet of shell fluid.
Described helical baffles is continuous helical deflecting plate or discontinuous helical baffles, and discontinuous helical baffles is continuous bridging type or staggered helical.
Described helical baffles is single-screw or many helical structures, and its spiral is left hand helix or right-handed helix.
The present invention improves the shell-side of monoshell pass spiral baffle shell-and-tube heat exchanger, is example with the double-shell helical deflecting plate pipe and shell type heat exchanger, and helical baffles is divided into external spiral deflection plate and inside spin deflection plate.An inner sleeve is arranged between external spiral deflection plate and the inside spin deflection plate, the external spiral deflection plate can be on the same helicoid or on the different helicoid with the inside spin deflection plate, therefore it is easier heat exchanger to be installed, and can adopt the method for the pitch of adjusting the shell-side helical baffles to regulate the shell fluid flow velocity as required.Surround the external spiral passage as the external spiral shell side by housing, external spiral deflection plate and inner sleeve, the inside spin passage that is surrounded by inner sleeve, inside spin deflection plate and central tube is as the inside spin shell side.The shell-side inlet fluid is imported and exported pipe by second shell-side, at first flow to the external spiral shell side and make helical flow, after the external spiral shell-side fluid has flowed the external spiral shell side, through being reserved in the external spiral and the inside spin converting interface of inner sleeve one end, change flow direction and flow to the inside spin shell side, make helical flow, after the inside spin shell-side fluid has flowed the inside spin shell side, flow to the cavity that is surrounded by tube sheet, housing and baffle plate, shell-side outlet fluid is imported and exported pipe outflow housing by first shell-side then.Baffle plate shell-side can be exported fluid and the shell-side inlet fluid is isolated.Under same pipe number of passes, same traffic, the coefficient of heat transfer of the helix tube shell heat exchanger of double-shell is than the height of monoshell journey structure, thereby reaches the purpose that improves heat exchange efficiency.
Inner sleeve is one or more, forms two spiral shell sides or a plurality of spiral shell side.The definite of inner sleeve diameter should guarantee that the fluid flow area of each spiral shell side is close.When requiring the shell-and-tube heat exchanger very high, that the employing tube side is more, can adopt the helix tube shell heat exchanger of muitishell structure to improve heat exchange efficiency, reduce the cost of heat transmission equipment for heat exchange.
Inner sleeve of the present invention is an odd number (1,3,5,7 ...) when individual, realize that the flow process number of shell fluid is an even number (2,4,6,8 ...) individual, this moment, first shell-side import and export pipe and second shell-side were imported and exported the same end that pipe is arranged in housing.Inner sleeve is an even number (2,4,6,8 ...) when individual, realize that the flow process number of shell fluid is an odd number (3,5,7,9 ...) individual, this moment, first shell-side import and export pipe and second shell-side were imported and exported the two ends that pipe is arranged in housing.This structure can be arranged shell-side import and export pipe neatly according to arts demand.
First shell-side of the present invention is imported and exported pipe as the outlet of shell fluid or the import of shell fluid, and second shell-side is imported and exported pipe correspondingly as the import of shell fluid or the outlet of shell fluid.When the temperature difference of shell-side inlet fluid and environment during than the having a narrow range of temperature of shell-side outlet fluid and environment, can adopt the shell-side inlet fluid external spiral shell side of flowing through earlier, shell-side outlet fluid is by the structure of inside spin shell side outflow; When the temperature difference of shell-side inlet fluid and environment is bigger than the temperature difference of shell-side outlet fluid and environment, can adopt the shell-side inlet fluid inside spin shell side of flowing through earlier, shell-side outlet fluid is by the structure of external spiral shell side outflow.This structure can be selected flow problem neatly according to arts demand, and the temperature difference that guarantees external spiral shell-side fluid and environment has a narrow range of temperature than inside spin shell-side fluid and environment, can save insulation material like this, reduces cost.
Helical baffles of the present invention is continuous helical deflecting plate or discontinuous helical baffles, and discontinuous helical baffles is continuous bridging type or staggered helical.Described helical baffles can adopt single-screw or many helical structures according to the needs of process, technological design.Many helical structures can adapt to large diameter import and export pipe.Helical baffles can adopt left hand helix or right-handed helix structure according to the needs that design is installed in housing.
Description of drawings
Fig. 1 is a heat exchanger structure schematic diagram of the present invention.
Fig. 2 (a) is interior continuous helical deflecting plate schematic diagram among the present invention.
Fig. 2 (b) is the present invention China and foreign countries continuous helical deflecting plate schematic diagram.
Fig. 2 (c) is continuous helical deflecting plate package assembly schematic diagram among the present invention.
Fig. 3 (a) is interior discontinuous helical baffles schematic diagram among the present invention.
Fig. 3 (b) is the discontinuous helical baffles schematic diagram in the present invention China and foreign countries.
Fig. 3 (c) is discontinuous helical baffles package assembly schematic diagram among the present invention.
Fig. 4 is external spiral and inside spin converting interface schematic diagram among the present invention.
Fig. 5 (a) is the two left-hand screw deflection plate schematic diagrames of the present invention.
Fig. 5 (b) is the two right-hand screw deflection plate schematic diagrames of the present invention.
Fig. 6 (a) is a kind of double-shell helical deflecting plate pipe and shell type heat exchanger shell fluid flow schematic diagram of the present invention.
Fig. 6 (b) is a kind of three shell pass screw baffle pipe shell type heat exchanger shell fluid flow schematic diagrams of the present invention.
Accompanying drawing is specific embodiments of the invention.
Below in conjunction with accompanying drawing content of the present invention is described in further detail.
The specific embodiment
With reference to shown in Figure 1, with the double-shell helical deflecting plate pipe and shell type heat exchanger is example, this heat exchanger comprises a housing 18, be positioned at a central tube 12 at housing 18 centers, two tube sheets 6 at housing 18 two ends, two tube sheets 6 connect first end socket 5 and second end socket 20 respectively, wherein, first end socket 5 is provided with pipe side-entrance pipe 3 and pipe side outlet pipe 4, be provided with heat-exchanging tube bundle 15 and helical baffles between two tube sheets 6, helical baffles is provided with hole 21, heat-exchanging tube bundle 15 passes hole 21 secured in parallel on the helical baffles between two tube sheets 6, first shell-side is installed on housing 18 imports and exports pipe 7 and second shell-side import and export pipe 8, it is characterized in that described helical baffles is divided into external spiral deflection plate 13 and inside spin deflection plate 14; Be provided with inner sleeve 17 between external spiral deflection plate 13 and the inside spin deflection plate 14, external spiral deflection plate 13 is on the same helicoid with inside spin deflection plate 14 or on the different helicoid; The external spiral passage that is surrounded by housing 18, external spiral deflection plate 13 and inner sleeve 17 is as the external spiral shell side, and the inside spin passage that is surrounded by inner sleeve 17, inside spin deflection plate 14 and central tube 12 is as the inside spin shell side; Inner sleeve 17 is imported and exported between end of pipe 7 and the tube sheet 6 at first shell-side a segment distance, this segment distance should guarantee that first shell-side that flows through that shell fluid can be unobstructed imports and exports pipe 7, and the fluid flow area of this position should be close with the fluid flow area of other spiral shell side, the end that inner sleeve 17 is imported and exported pipe 7 at first shell-side is connected with baffle plate 11, and it is isolated with shell-side inlet fluid 10 that baffle plate 11 exports fluid 9 with shell-side; Between inner sleeve 17 other ends and the tube sheet 6 segment distance is arranged also, as external spiral and inside spin converting interface 19, this segment distance should guarantee that shell fluid can flow to the inside spin shell side by the external spiral shell side unobstructedly, and the fluid flow area of this position should be close with the fluid flow area of other spiral shell side.1 is the tube side inlet fluid, and 2 are tube side outlet fluid.16 is the helical baffles overlapping the slot.
Shown in Fig. 2 (a), make circle or oval ring plate with a slice metal material or nonmetallic materials, drilling bore hole 21 is radially cut apart with a knife or scissors a seam again, adopts drawing to draw then and is twisted into the continuous helical plate, continuous helical deflecting plate 14 in forming.
Shown in Fig. 2 (b), make circle or oval ring plate with a slice metal material or nonmetallic materials, drilling bore hole 21 is radially cut apart with a knife or scissors a seam again, adopts drawing to draw then and is twisted into the continuous helical plate, forms outer continuous helical deflecting plate 13.
Shown in Fig. 2 (c), continuous helical deflecting plate is divided into outer continuous helical deflecting plate 13 and interior continuous helical deflecting plate 14.Outer continuous helical deflecting plate 13 and interior continuous helical deflecting plate 14 are on the same helicoid or on the different helicoid.Inner sleeve 17 is divided into outer continuous helical shell side and two shell sides of interior continuous helical shell side with shell-side.Inner sleeve 17 is one or more, forms two spiral shell sides or a plurality of spiral shell side.21 is the hole on the helical baffles.
Shown in Fig. 3 (a), make circle or oval ring plate with a slice metal material or nonmetallic materials, drilling bore hole 21, and then radially be cut into four deflection plates of fanning arcs, discontinuous helical baffles 23 in overlap joint forms.
Shown in Fig. 3 (b), make circle or oval ring plate with a slice metal material or nonmetallic materials, drilling bore hole 21, and then radially be cut into four deflection plates of fanning arcs, overlap joint forms outer discontinuous helical baffles 22.
Shown in Fig. 3 (c), discontinuous helical baffles is divided into outer discontinuous helical baffles 22 and interior discontinuous helical baffles 23.Outer discontinuous helical baffles 22 and interior discontinuous helical baffles 23 are on the same helicoid or on the different helicoid.Inner sleeve 17 is divided into outer discontinuous spiral shell side and two shell sides of interior discontinuous spiral shell side with shell-side.Inner sleeve 17 is one or more, forms two spiral shell sides or a plurality of spiral shell side.21 is the hole on the helical baffles.
With reference to shown in Figure 4, the hole 21 that heat-exchanging tube bundles 15 in the housing 18 pass external spiral deflection plate 13 and inside spin deflection plate 14 is fixed on the tube sheet 6, tube sheet 6 connects end socket 20, between inner sleeve 17 and the tube sheet 6 segment distance is arranged, as external spiral and inside spin converting interface 19, this segment distance should guarantee that shell fluid can flow to the inside spin shell side by the external spiral shell side unobstructedly, and the fluid flow area of this position should be close with the fluid flow area of other spiral shell side.This simple in structure, easy enforcement.
Shown in Fig. 5 (a), two left-hand screw deflection plates are made up of two groups of coaxial external spiral deflection plates 13 and inside spin deflection plate 14, an inner sleeve 17 is arranged between external spiral deflection plate 13 and the inside spin deflection plate 14, and external spiral deflection plate 13 is the left hand helix structure with inside spin deflection plate 14.In addition, can as required external spiral deflection plate coaxial more than three groups or three groups 13 and inside spin deflection plate 14 be combined to form many left-hand screws baffle arrangement.Inner sleeve 17 is one or more, forms two spiral shell sides or a plurality of spiral shell side.Helical baffles is continuous helical deflecting plate or discontinuous helical baffles, and discontinuous helical baffles is continuous bridging type or staggered helical.21 is the hole on the helical baffles.
Shown in Fig. 5 (b), two right-hand screw deflection plates are made up of two groups of coaxial external spiral deflection plates 13 and inside spin deflection plate 14, an inner sleeve 17 is arranged between external spiral deflection plate 13 and the inside spin deflection plate 14, and external spiral deflection plate 13 is the right-handed helix structure with inside spin deflection plate 14.In addition, can as required external spiral deflection plate coaxial more than three groups or three groups 13 and inside spin deflection plate 14 be combined to form many right-hand screws baffle arrangement.Inner sleeve 17 is one or more, forms two spiral shell sides or a plurality of spiral shell side.Helical baffles is continuous helical deflecting plate or discontinuous helical baffles, and discontinuous helical baffles is continuous bridging type or staggered helical.21 is the hole on the helical baffles.
Shown in Fig. 6 (a), with the double-shell helical deflecting plate pipe and shell type heat exchanger is example, shell-side inlet fluid 10 is imported and exported pipe 8 by second shell-side, at first flow to the external spiral shell side and make helical flow, after external spiral shell-side fluid 24 has flowed the external spiral shell side, through being reserved in the external spiral and the inside spin converting interface 19 of inner sleeve 17 1 ends, change flow direction and flow to the inside spin shell side, make helical flow, after inside spin shell-side fluid 25 has flowed the inside spin shell side, flow to by tube sheet 6, the cavity that housing 18 and baffle plate 11 surround, shell-side outlet fluid 9 is imported and exported pipe 7 outflow housings 18 by first shell-side then.When the temperature difference of shell-side inlet fluid and environment during than the having a narrow range of temperature of shell-side outlet fluid and environment, adopt flow arrangement as shown in the figure, the temperature difference that such flow arrangement guarantees external spiral shell-side fluid and environment has a narrow range of temperature than inside spin shell-side fluid and environment, saves insulation material, reduces cost.When the temperature difference of shell-side inlet fluid and environment is bigger than the temperature difference of shell-side outlet fluid and environment, the flow arrangement that adopts is that shell-side inlet fluid 10 is imported and exported pipe 7 by first shell-side, at first flow to the inside spin shell side and make helical flow, after inside spin shell-side fluid 25 has flowed the inside spin shell side, through being reserved in the external spiral and the inside spin converting interface 19 of inner sleeve 17 1 ends, change flow direction and flow to the external spiral shell side, make helical flow, after external spiral shell-side fluid 24 had flowed the external spiral shell side, shell-side outlet fluid 9 was imported and exported pipe 8 by second shell-side and is flowed out housing 18.Inner sleeve 17 is one or more, forms two spiral shell sides or a plurality of spiral shell side.Inner sleeve 17 is an odd number (1,3,5,7 ...) when individual, realize that the flow process number of shell fluid is an even number (2,4,6,8 ...) individual, this moment, first shell-side was imported and exported the same end that pipe 7 and second shell-side import and export pipe 8 is arranged in housing.Helical baffles is continuous helical deflecting plate or discontinuous helical baffles, and discontinuous helical baffles is continuous bridging type or staggered helical; Helical baffles is single-screw or many helical structures; Helical baffles is left hand helix or right-handed helix.
Shown in Fig. 6 (b), with three shell pass screw baffle pipe shell type heat exchangers is example, shell-side inlet fluid 10 is imported and exported pipe 7 by first shell-side, at first flow to the inside spin shell side and make helical flow, after inside spin shell-side fluid 25 has flowed the inside spin shell side, through being reserved in the external spiral and the middle spiral converting interface 28 of inner sleeve 17 1 ends, change flow direction and flow to middle spiral shell side, make helical flow, after central spiral shell-side fluid 26 has flowed middle spiral shell side, through being reserved in the external spiral and the middle spiral converting interface 27 of inner sleeve 17 other ends, change flow direction and flow to the external spiral shell side, make helical flow, after external spiral shell-side fluid 24 had flowed the external spiral shell side, shell-side outlet fluid 9 was imported and exported pipe 8 by second shell-side and is flowed out housing 18.When the temperature difference of shell-side inlet fluid and environment is bigger than the temperature difference of shell-side outlet fluid and environment, adopt flow arrangement as shown in the figure, the temperature difference that such flow arrangement guarantees external spiral shell-side fluid and environment has a narrow range of temperature than inside spin shell-side fluid and environment, saves insulation material, reduces cost.When the temperature difference of shell-side inlet fluid and environment during than the having a narrow range of temperature of shell-side outlet fluid and environment, the flow arrangement that adopts is that shell-side inlet fluid 10 is imported and exported pipe 8 by second shell-side, at first flow to the external spiral shell side and make helical flow, after external spiral shell-side fluid 24 has flowed the external spiral shell side, through being reserved in the external spiral and the middle spiral converting interface 27 of inner sleeve 17 1 ends, change flow direction and flow to middle spiral shell side, make helical flow, after central spiral shell-side fluid 26 has flowed middle spiral shell side, through being reserved in the middle spiral and the inside spin converting interface 28 of inner sleeve 17 other ends, change flow direction and flow to the inside spin shell side, make helical flow, after inside spin shell-side fluid 25 has flowed the inside spin shell side, flow to by tube sheet 6, the cavity that housing 18 and baffle plate 11 surround, shell-side outlet fluid 9 is imported and exported pipe 7 outflow housings 18 by first shell-side then.Inner sleeve 17 is one or more, forms two spiral shell sides or a plurality of spiral shell side.Inner sleeve 17 is an even number (2,4,6,8 ...) when individual, realize that the flow process number of shell fluid is an odd number (3,5,7,9 ...) individual, this moment, first shell-side was imported and exported the two ends that pipe 7 and second shell-side import and export pipe 8 is arranged in housing.Helical baffles is continuous helical deflecting plate or discontinuous helical baffles, and discontinuous helical baffles is continuous bridging type or staggered helical; Helical baffles is single-screw or many helical structures; Helical baffles is left hand helix or right-handed helix.
The present invention has the following advantages:
1, the present invention can improve heat exchange efficiency, makes heat exchanger structure compacter;
Vibration when 2, the present invention has greatly reduced the heat exchanger operation, security improves, and is less scaling, increases The life-span that has added heat exchanger;
3. applicable to the helical deflecting plate pipe and shell type heat exchanger of various diameter housings.
Claims (5)
1. multi-shell spiral baffle plate shell-and-tube heat exchanger, comprise a housing (18), be positioned at a central tube (12) at housing (18) center, two tube sheets (6) at housing (18) two ends, two tube sheets (6) connect first end socket (5) and second end socket (20) respectively, wherein, first end socket (5) is provided with pipe side-entrance pipe (3) and pipe side outlet pipe (4), be provided with heat-exchanging tube bundle (15) and helical baffles between two tube sheets (6), helical baffles is provided with hole (21), heat-exchanging tube bundle (15) passes hole (21) secured in parallel on the helical baffles between two tube sheets (6), first shell-side is installed on housing (18) imports and exports pipe (7) and second shell-side import and export pipes (8), it is characterized in that described helical baffles is divided into external spiral deflection plate (13) and inside spin deflection plate (14); Be provided with inner sleeve (17) between external spiral deflection plate (13) and the inside spin deflection plate (14), external spiral deflection plate (13) is on the same helicoid with inside spin deflection plate (14) or on the different helicoid; The external spiral passage that is surrounded by housing (18), external spiral deflection plate (13) and inner sleeve (17) is as the external spiral shell side, and the inside spin passage that is surrounded by inner sleeve (17), inside spin deflection plate (14) and central tube (12) is as the inside spin shell side; The end that inner sleeve (17) is imported and exported pipe (7) at first shell-side is connected with baffle plate (11), and it is isolated with shell-side inlet fluid (10) that baffle plate (11) exports fluid (9) with shell-side; Inner sleeve (17) is one or more, forms two spiral shell sides or a plurality of spiral shell side, and inner sleeve (17) is reserved with external spiral and middle spiral converting interface (27) and middle spiral and inside spin converting interface (28).
2. multi-shell spiral baffle plate shell-and-tube heat exchanger according to claim 1, it is characterized in that, when described inner sleeve (17) is odd number, the flow process number of realizing shell fluid is an even number, first shell-side import and export pipes this moment (7) and second shell-side are imported and exported the same end that pipe (8) is arranged in housing, when inner sleeve (17) is even number, the flow process number of realizing shell fluid is an odd number, and first shell-side import and export pipes this moment (7) and second shell-side are imported and exported the two ends that pipe (8) is arranged in housing.
3. multi-shell spiral baffle plate shell-and-tube heat exchanger according to claim 1, it is characterized in that, described first shell-side is imported and exported pipe (7) as the outlet of shell fluid or the import of shell fluid, and second shell-side is imported and exported pipe (8) correspondingly as the import of shell fluid or the outlet of shell fluid.
4. multi-shell spiral baffle plate shell-and-tube heat exchanger according to claim 1, it is characterized in that, described helical baffles is continuous helical deflecting plate or discontinuous helical baffles, and discontinuous helical baffles is continuous bridging type or staggered helical.
5. multi-shell spiral baffle plate shell-and-tube heat exchanger according to claim 1 is characterized in that, described helical baffles is single-screw or many helical structures, and its spiral is left hand helix or right-handed helix.
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| US6827138B1 (en) * | 2003-08-20 | 2004-12-07 | Abb Lummus Global Inc. | Heat exchanger |
| CN1719187A (en) * | 2005-08-01 | 2006-01-11 | 西安交通大学 | Continuous helical deflecting plate pipe and shell type heat exchanger |
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| JPS59164895A (en) * | 1983-02-28 | 1984-09-18 | バルテイモア−・エア−コイル・カムパニ−・インコ−ポレ−テツド | High-performance multitubular type heat exchanger with arched baffle plate |
| CN2387496Y (en) * | 1999-08-20 | 2000-07-12 | 中国石油天然气集团公司 | Tube type spiral baffle heat exchanger |
| US6827138B1 (en) * | 2003-08-20 | 2004-12-07 | Abb Lummus Global Inc. | Heat exchanger |
| CN2655156Y (en) * | 2003-10-30 | 2004-11-10 | 中国石化集团齐鲁石油化工公司 | Screw baffle pipe case type heat exchanger |
| CN1719187A (en) * | 2005-08-01 | 2006-01-11 | 西安交通大学 | Continuous helical deflecting plate pipe and shell type heat exchanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839828A (en) * | 2017-02-22 | 2017-06-13 | 太原理工大学 | Oblique blinds baffle shell-and-tube heat exchanger in double-shell side external spiral deflection plate |
| WO2022034013A1 (en) | 2020-08-10 | 2022-02-17 | Technip France | A shell-and-tube heat exchanger, method of exchanging heat and use of heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1821700A (en) | 2006-08-23 |
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