CN105180680B - Pipe winding type high-pressure cooler in new winding manner for 1,000MW nuclear main pump - Google Patents
Pipe winding type high-pressure cooler in new winding manner for 1,000MW nuclear main pump Download PDFInfo
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- CN105180680B CN105180680B CN201510593757.0A CN201510593757A CN105180680B CN 105180680 B CN105180680 B CN 105180680B CN 201510593757 A CN201510593757 A CN 201510593757A CN 105180680 B CN105180680 B CN 105180680B
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- coil pipe
- pipe
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- layer coil
- middle level
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- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a pipe winding type high-pressure cooler in a new winding manner for a 1,000MW nuclear main pump. The pipe winding type high-pressure cooler has the beneficial effects of being compact and simple in structure, high in heat transfer efficiency, capable of bearing high pressure, not prone to scaling, easy to maintain, long in service life and the like, and further has the beneficial effects that pipe plate supporting is not needed, pressure losses are low, heat exchange capacity is uniform, and temperature changes at longitudinal height are more uniform. Practice proves that the high-pressure cooler can adapt to complex and severe environment (such as a nuclear power station) better; the high-pressure cooler is formed by connecting and coiling four spiral pipes in parallel on the inner layer, the middle layer and the outer layer; the spiral pipes are connected to two flange communicating vessels; the spiral pipe on the inner layer and the spiral pipe on the middle layer are the same in screw pitch and opposite in rotating direction; the two spiral pipes opposite in rotating direction are wound on the outer layer, and the screw pitch of the two spiral pipes on the outer layer is two times that of the screw pitch of the spiral pipe on the inner layer and the spiral pipe on the middle layer, connectors of the spiral pipe on the inner layer and the spiral pipe on the middle layer are in butt joint through the flange communicating vessels, and connectors of the two spiral pipes on the outer layer are in butt joint and are higher than the spiral pipe on the inner layer and the spiral pipe on the middle layer; an inserting pipe type transient resistance coefficient flow distributor is arranged on the fork of the four spiral pipes; and hot fluid spirally flows along the spiral pipes from top to bottom, cold fluid transversely brushes pipe bundles from bottom to top in clearances formed by the spiral pipes along a shell side, and counter flow is formed to take away heat.
Description
Technical field: the present invention relates to a kind of new canoe of 1000mw core main pump is around tubular type HP cooler.
Background technology: cooler can be divided into by the construction featuress of heat exchanger components: plate-fin heat exchanger, shell-and-tube heat exchanger,
Wherein shell-and-tube is divided into: fixed tube sheet type, u-shaped tubular type, floating head type, coiled etc..Plate-fin heat exchanger is sealed by multiple inlet tubes
The composition such as head, flow deflector and plate Shu Danyuan, plate bundle is made up of upper lower clapboard, heat exchange fin and strip of paper used for sealing etc., though it is tight to have structure
Gather, the advantages of heat transfer efficiency is high, but has processing technology to have high demands, blocking and corrosion easily occur, thus pressure drop increase, maintenance tired
Difficult the shortcomings of.Fixed tube sheet type cooler construction is relatively easy, most widely used, but due to non-activity tube sheet support, is not suitable for temperature
Difference is big, the high occasion of pressure, and shell-side not easy cleaning.U-shaped tubular cooler, tube bank curve u-shaped, due to two ends be fixed on same
On block tube sheet, turnover cooling water must be in the same side, the single occasion of suitable technology arrangement.Floating head type cooler, one end tube sheet
Fix with housing, other end tube sheet can free floating, due to complex structure, take up space big, be not suitable for high pressure, high thermal stress, empty
Between limited occasion., as a kind of thermoexcell, due to its compact conformation, in unit volume, heat exchange area is big, quilt for serpentine pipe
It is widely used in the heat transmission equipments such as coagulator, cooler, heater and vaporizer, be referred to as wrap-round tubular heat exchanger.For increasing
Big heat exchange area, conventional tube bank is often made up of multi-layer helix-tube coiling, and the serpentine pipe with identical coil diameter forms one
Coiling layer, the identical or adjacent two tubes of rotation direction are brazed together formation and pipe dish is around on tube bank arrangement, mostly
In-line arrangement, or fork row is it is generally the case that for closeer tube bank arrangement, the heat transfer effect of fork row is better than in-line arrangement, and in-line arrangement is in spiral
Pipe initially certain row when heat transfer effect be better than fork row, in design, for ensureing the same length of every serpentine pipe, certainly will make
There is uneven axial pitch in each helical disk tube layer, for importing and exporting the larger equipment of the temperature difference, shell-side easily occurs and changes
Heat is uneven, and serpentine pipe medial and lateral fluid highly goes up the big phenomenon of the temperature difference in identical longitudinal direction, especially in equipment using a period of time
After fouling, non-uniform phenomenon more can aggravate, and not only reduces heat exchange efficiency, and between pipe, thermal stress more can bring safety hidden to equipment
Suffer from, for nuclear power station this high pressure, high temperature difference, long-life, have in the Special use environment of shockproof requirements, safety first, this
Phenomenon is not allowed to.
Content of the invention: it is an object of the invention to provide a kind of 1000mw core main pump is cold around tubular type high pressure with new canoe
But device, has compact conformation simply, heat transfer efficiency is high, can bear high pressure it is not necessary to tube sheet and filler strip support, and unsuitable fouling makes
With life-span length, the features such as anti-seismic performance is high.The technical scheme is that a kind of new canoe of 1000mw core main pump around
Tubular type HP cooler, upper flange (1), lower flange (6) are connected with housing (4) by bolt, internal layer coil pipe (8), middle level coil pipe
(9), the first outer layer coil pipe (10), the second outer layer coil pipe (11) are individually coiled to form using serpentine pipe parallel connection, internal layer coil pipe
(8) identical with middle level coil pipe (9) pitch, oppositely oriented, internal layer coil pipe (8), middle level coil pipe (9) interface are connected by first flange
Device (2) is docked with second flange linker (5), and the first outer layer coil pipe (10) passes through the first method with the second outer layer coil pipe (11) interface
Blue linker (2) is docked with second flange linker (5), the first outer layer coil pipe (10) and the second outer layer coil pipe (11) interface position
Higher than internal layer coil pipe (8) and middle level coil pipe (9) interface axis, cannula type transient state resistance coefficient is set at four coil pipe bifurcation mouth
Flow distributor (3), the first outer layer coil pipe (10) and the second outer layer coil pipe (11) are wound around by two oppositely oriented serpentine pipes, spiral shell
Away from be internal layer coil pipe (8), two times of middle level coil pipe (9) pitch, internal layer coil pipe (8) and middle level coil pipe (9) are in any space of shell side
In arrangement mode be pure fork row's arrangement, that is, in the axial section of space difference angle, internal layer coil pipe (8) and middle level coil pipe
(9) position relationship in shell side is all consistent and position is staggered, the first outer layer coil pipe (10) and the second outer layer disk
The arrangement mode in shell side with middle level coil pipe (9) is presented as the idol that periodic in-line arrangement is arranged with fork to pipe (11) in space together
Close, enclose along the every spiral winding one of central tube (12) in shell side middle level coil pipe (8), the first outer layer coil pipe (10) and the second outer layer disk
Pipe (11) is changed once with the relative position of middle level coil pipe (9) together, then proceedes to identical position relationship spiral winding,
In each winding cycle, in the axial section of different angles, the first outer layer coil pipe (10) is together with the second outer layer coil pipe (11)
Position relationship with middle level coil pipe (9) is all to be gradually transitions fork row from in-line arrangement, then is gradually transitions the initial of next cycle
In-line arrangement position.
The invention has the beneficial effects as follows:
(1) upper and lower blind flange is connected with housing respectively by bolt, and three layers of four serpentine pipe are connected to Liang Ge flange UNICOM
On device, and it is spirally coiled on central tube, two flange Communicating devices are connected with upper and lower blind flange respectively by bolt, have and tear open
Dress is simple, the features such as easy care.
(2) internal layer coil pipe is docked by flange Communicating device with middle level coil pipe interface, and oppositely oriented, pitch is identical, this company
The mode one side of connecing reduces the active force to flange Communicating device for the fluid, on the other hand, makes flow of fluid relatively more steady,
(3) by two oppositely oriented serpentine pipe coilings, pitch is interior, two times of middle level coil pipe pitch to outer layer, this coiling
Mode, on the one hand makes interior, domestic and abroad each layer of coil pipe axial pitch in shell-side runner equal, on the other hand makes outer layer and middle level
Coil pipe relative position in space is in be repeated cyclically, and is spatially periodic in-line arrangement and coupling that fork is arranged, this row
Row mode, make tube wall nusselt number nu heat exchanger different longitudinally highly on more they tend to uniformly, improve equipment safety performance and
Anti-seismic performance, also further increases the overall heat-transfer coefficient of equipment in practice it has proved that being more suitable for that nuclear power station is this high pressure, height simultaneously
The temperature difference, long-life, there is the use environment of shockproof requirements,
(4) spiral tube pitch is not required to want parting bead to limit, and no tube sheet support structure enormously simplify device structure and weight,
(5) compared with traditional wound mode, the tube side pressure loss reduces nearly 1 times to this kind of coiled fashion,
(6) it is to optimize structure further, is additionally arranged cannula type transient state resistance coefficient flow distributor, effect is: in flowing
Beginning, by adjusting the resistance coefficient of each coil pipe, reduce the assignment of traffic leading to because each coil lengths do not wait relatively not
All problems, and because subsequent flowing is constantly to be repeated cyclically, after bank of tubes number (being wound around the number of turns) reaches some, stream
Move the periodic fully-developed stage that will enter, flowing disturbance under the action of the centrifugal force is gradually disappeared, and flowing keeps stable,
(7) cooling water inlet, outlet are opened on lower flange lid and upper flange lid respectively, and it is angled to open up position,
So that shell-side heat exchange is more abundant,
(8) four coil pipes are coiled on central tube together, and central tube is non-totally-enclosed, has aperture in end face, on the one hand makes
Shell-side flow adequately flows through coil pipe gap, strengthens shell-side heat exchange, on the other hand reduces the impulsive force to central tube for the fluid.
This kind of coiled fashion of the present invention is compared with traditional wound mode: on the one hand, the tube side pressure loss reduces nearly 1
Times, on the other hand, in terms of heat exchange property, so that the nusselt number nu of tube wall different layers is changed evenly, solve in serpentine pipe,
Lateral fluid highly goes up the big problem of the temperature difference in identical longitudinal direction, also further increases the overall heat-transfer coefficient of equipment, simplifies whole
Body structure, eliminates the supporting constructions such as filler strip tube sheet, be more suitable for nuclear power station this have high pressure, high temperature difference, long-life, have antidetonation will
That asks obtains use environment.It was verified that the present invention adapts to the working environment of complicated harshness.
Brief description
Fig. 1 is the total sectional view of HP cooler
Fig. 2 is the partial enlarged drawing of Fig. 1
Fig. 3 is cannula type transient state resistance coefficient flow distributor top view
Fig. 4 is cannula type transient state resistance coefficient flow distributor a-a view
Fig. 5 is cannula type transient state resistance coefficient flow distributor b-b view
Fig. 6 is fork row's arrangement schematic diagram
Fig. 7 is in-line arrangement arrangement schematic diagram
Fig. 8 is 0 degree of position of shell side axial partial sectional view
Fig. 9 is shell side axial partial sectional view 180 degree position
Specific embodiment
As shown in figure 1, a kind of 1000mw core main pump canoe around tubular type HP cooler, upper flange 1, lower flange
6 are connected with housing 4 by bolt, and internal layer coil pipe 8, middle level coil pipe 9, the first outer layer coil pipe 10, the second outer layer coil pipe 11 are single respectively
Solely it is coiled to form using serpentine pipe parallel connection, internal layer coil pipe 8 is identical with middle level coil pipe 9 pitch, oppositely oriented, internal layer coil pipe 8, middle level
Coil pipe 9 interface passes through first flange linker 2 and second flange linker 5 and docks, the first outer layer coil pipe 10 and the second outer layer disk
Pipe 11 interface docks also by first flange linker 2 and second flange linker 5, the first outer layer coil pipe 10 and the second outer layer disk
Pipe 11 interface position is higher than internal layer coil pipe 8 and middle level coil pipe 9 interface axis, as shown in Fig. 2 arranging at four coil pipe bifurcation mouth
Cannula type transient state resistance coefficient flow distributor 3.
First outer layer coil pipe 10 and the second outer layer coil pipe 11 are wound around by two oppositely oriented serpentine pipes, and pitch is internal layer disk
Pipe 8, two times of middle level coil pipe 9 pitch, internal layer coil pipe 8 and arrangement mode in any space of shell side for the middle level coil pipe 9 are pure fork
Row's arrangement (as shown in Figure 6), that is, in the axial section of space difference angle, internal layer coil pipe 8 and middle level coil pipe 9 are in shell side
Position relationship is all consistent and position is staggered, and the first outer layer coil pipe 10 together with the second outer layer coil pipe 11 with middle level
Arrangement mode in shell side for the coil pipe 9 is presented as in space, and in-line arrangement periodically as shown in Figure 7 is with fork row's as shown in Figure 6
Coupling, that is, in shell side, middle level coil pipe 9 encloses along the every spiral winding one of central tube 12, the first outer layer coil pipe 10 and the second outer layer coil pipe
11 are changed once with the relative position of middle level coil pipe 9 together, then proceed to identical position relationship spiral winding, at each
In the winding cycle, in the axial section of different angles, the first outer layer coil pipe 10 together with the second outer layer coil pipe 11 with middle level coil pipe 9
Position relationship be all from in-line arrangement as shown in figure 8, be gradually transitions fork row as shown in figure 9, being gradually transitions next cycle again
Initial in-line arrangement position, and the spatial relation of internal layer coil pipe 8 and middle level coil pipe 9 keep constant as Fig. 8, shown in Fig. 9.
Because the winding number of turns of coil pipe is more, after reaching a fixing turn, fluid will enter periodic fully-developed rank
Section, the disturbance of centrifugal force can gradually disappear, therefore the beginning in flowing, and the impact of the fluidised form heat exchanging in each coil pipe is to closing weight
Will, in order to reduce the assignment of traffic inequality problem leading to because each coil lengths does not wait, intubation is installed at coil pipe bifurcated mouth
Formula transient state resistance coefficient flow distributor 3, as shown in Fig. 2 the concrete installation side of cannula type transient state resistance coefficient flow distributor 3
Formula as shown in figure 4, the through hole of two mutually perpendicular directions is opened on instlated tubular 3.1, as shown in figure 5, by upper intubation 3.2, and under
Intubation 3.3 is inserted respectively, in upper intubation 3.2, and has oval notch in lower intubation 3.3, and breach direction is just to flowing
Direction, as shown in Figure 3.
As shown in figure 1, cooling water inlet is opened on lower flange 6, coolant outlet 13 is located on upper flange 1.
Claims (2)
1. a kind of new canoe of 1000mw core main pump, around tubular type HP cooler, is characterized in that: upper flange (1), purgation
Blue (6) are connected with housing (4) by bolt, internal layer coil pipe (8), middle level coil pipe (9), the first outer layer coil pipe (10), the second outer layer
Coil pipe (11) is individually coiled to form using serpentine pipe parallel connection, and internal layer coil pipe (8) is identical with middle level coil pipe (9) pitch, rotation direction
On the contrary, internal layer coil pipe (8), middle level coil pipe (9) interface are docked with second flange linker (5) by first flange linker (2),
First outer layer coil pipe (10) passes through first flange linker (2) and second flange linker with the second outer layer coil pipe (11) interface
(5) dock, the first outer layer coil pipe (10) and the second outer layer coil pipe (11) interface position are higher than internal layer coil pipe (8) and middle level coil pipe
(9) interface axis, setting cannula type transient state resistance coefficient flow distributor (3), the first outer layer disk at four coil pipe bifurcation mouth
Pipe (10) and the second outer layer coil pipe (11) are wound around by two oppositely oriented serpentine pipes, and pitch is internal layer coil pipe (8), middle level coil pipe
(9) two times of pitch, internal layer coil pipe (8) and arrangement mode in any space of shell side for the middle level coil pipe (9) they are pure fork row's arrangement,
I.e. in the axial section of space difference angle, internal layer coil pipe (8) and position relationship in shell side for the middle level coil pipe (9) are all one
Cause and position be staggered, the first outer layer coil pipe (10) together with the second outer layer coil pipe (11) with middle level coil pipe (9) in shell
Arrangement mode in journey is presented as the coupling of periodic in-line arrangement and fork row in space, that is, in the edge of shell side middle level coil pipe (8)
The every spiral winding one of heart cylinder (12) encloses, the first outer layer coil pipe (10) together with the second outer layer coil pipe (11) with middle level coil pipe (9)
Relative position changes once, then proceedes to identical position relationship spiral winding, within each winding cycle, different angles
Axial section in, the first outer layer coil pipe (10) together with the second outer layer coil pipe (11) with the position relationship of middle level coil pipe (9) all
It is to be gradually transitions fork row from in-line arrangement, the more initial in-line arrangement position being gradually transitions next cycle.
2. according to claim 1 canoe around tubular type HP cooler, it is characterized in that: cooling water inlet is opened in down
Flange (6) is upper, coolant outlet (13) is located on upper flange (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510593757.0A CN105180680B (en) | 2015-09-17 | 2015-09-17 | Pipe winding type high-pressure cooler in new winding manner for 1,000MW nuclear main pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510593757.0A CN105180680B (en) | 2015-09-17 | 2015-09-17 | Pipe winding type high-pressure cooler in new winding manner for 1,000MW nuclear main pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105180680A CN105180680A (en) | 2015-12-23 |
| CN105180680B true CN105180680B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510593757.0A Active CN105180680B (en) | 2015-09-17 | 2015-09-17 | Pipe winding type high-pressure cooler in new winding manner for 1,000MW nuclear main pump |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776356B (en) * | 2021-07-02 | 2023-01-17 | 清华大学 | Spiral tube type heat exchanger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1288055A (en) * | 1917-10-15 | 1918-12-17 | Frank H Langsenkamp | Heating-coil. |
| DE3825724A1 (en) * | 1988-07-28 | 1990-02-01 | Linde Ag | CONTAINER |
| JPH05223473A (en) * | 1992-02-06 | 1993-08-31 | Ishikawajima Harima Heavy Ind Co Ltd | Heat exchanger |
| CN101532784A (en) * | 2009-04-29 | 2009-09-16 | 无锡特莱姆气体设备有限公司 | Steam heating water bath type gasifier |
| JP2014190556A (en) * | 2013-03-26 | 2014-10-06 | Seo Koatsu Kogyo Kk | Heat exchanger |
| CN204987952U (en) * | 2015-09-17 | 2016-01-20 | 哈尔滨电气动力装备有限公司 | 1000MW nuclear main pump with new canoe around high -pressure cooler of tubular |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100096115A1 (en) * | 2008-10-07 | 2010-04-22 | Donald Charles Erickson | Multiple concentric cylindrical co-coiled heat exchanger |
-
2015
- 2015-09-17 CN CN201510593757.0A patent/CN105180680B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1288055A (en) * | 1917-10-15 | 1918-12-17 | Frank H Langsenkamp | Heating-coil. |
| DE3825724A1 (en) * | 1988-07-28 | 1990-02-01 | Linde Ag | CONTAINER |
| JPH05223473A (en) * | 1992-02-06 | 1993-08-31 | Ishikawajima Harima Heavy Ind Co Ltd | Heat exchanger |
| CN101532784A (en) * | 2009-04-29 | 2009-09-16 | 无锡特莱姆气体设备有限公司 | Steam heating water bath type gasifier |
| JP2014190556A (en) * | 2013-03-26 | 2014-10-06 | Seo Koatsu Kogyo Kk | Heat exchanger |
| CN204987952U (en) * | 2015-09-17 | 2016-01-20 | 哈尔滨电气动力装备有限公司 | 1000MW nuclear main pump with new canoe around high -pressure cooler of tubular |
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| Publication number | Publication date |
|---|---|
| CN105180680A (en) | 2015-12-23 |
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