CN107289792A - A kind of condenser pipe laying structure of low steam discharge resistance - Google Patents
A kind of condenser pipe laying structure of low steam discharge resistance Download PDFInfo
- Publication number
- CN107289792A CN107289792A CN201710616796.7A CN201710616796A CN107289792A CN 107289792 A CN107289792 A CN 107289792A CN 201710616796 A CN201710616796 A CN 201710616796A CN 107289792 A CN107289792 A CN 107289792A
- Authority
- CN
- China
- Prior art keywords
- condenser
- spreading grooves
- steam discharge
- laying structure
- pipe laying
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
Abstract
The present invention relates to a kind of arrangement of the heat exchanger tube of the condenser of turbine discharge condensation.Purpose is to provide a kind of improvement of condenser pipe laying structure, the pipe laying structure should can arrange more heat exchanger tubes in the condenser of identical size, or the condenser and same amount of heat exchanger tube of same size, the resistance of steam discharge is lower, steam discharge condensation effect is more preferable, ensure that condenser can be run under the vacuum pressure of design, it is ensured that the heat exchange efficiency of condenser.Technical scheme is：A kind of condenser pipe laying structure of low steam discharge resistance, including the tube bank that several are arranged parallel to each other in condenser cavity is positioned at, the spreading grooves of for the benefit of steam circulation between tube bank, the axis of adjacent spreading grooves is arranged in parallel；It is characterized in that：The angle of the axis of the spreading grooves and 10~15 ゜ of vertical axis formation of condenser.
Description
Technical field
It is specifically a kind of drop the present invention relates to a kind of arrangement of the heat exchanger tube of the condenser of turbine discharge condensation
Low turbine discharge resistance, can improve condenser soil-pipe interaction rate compact conformation heat exchange tube of condenser arrangement.
Background technology
For the heat exchanger for having phase transformation, the effect of turbine condenser is the exhaust steam in steam turbine (ratio for being discharged into high speed
Hold for 15m3/ kg or so) condense into water；Adjacent heat exchange tubes (hereinafter referred to as pipe) is arranged with 60 ° of triangles in general condenser
The patterns such as shape arrangement, 90 ° of quadrangular arrays and circle (radiation) arrangement, it is contemplated that the size of condenser, is typically all used
60 ° of triangular arranged, and lay out variously-shaped tube bank (multiple set of heat exchange tubes into) on this basis, such as banding,
Church type (M types) and tree-like (torch-shaped) tube bank etc., but all led because inconsistent with the angle of flare of high speed steam discharge (10~15 °)
Cause steam discharge resistance larger；And if the quantity and width of steam discharge groove are further added by reduce steam discharge resistance, condenser chi can be caused
It is very little larger.
As shown in Fig. 2 the pipe laying structure of conventional condenser, mainly considers main cold-zone pipe, air cooling zone pipe, hydroecium tabula
The arrangement of board channel, steam spreading grooves etc..Adjacent pipe arranged in the way of positive equilateral triangle (is distinguished at condenser two ends
A tube sheet is fixed, the two ends of each pipe are separately fixed in the pore of tube sheet), and constitute suitable bundle shape；Restrain it
Between formed and be beneficial to the spreading grooves that steam flows, the angles of flare of spreading grooves is 30 °；I.e. spreading grooves axis is with vertical direction angle
30°).This arrangement, the scope of spreading grooves covering is narrow, splits the spreading grooves of identical quantity (sum and row) pipe
Quantity just compare it is many；And the centre of outermost spreading grooves axis sensing air intake (fails the model of effectively covering air intake
Enclose).Because the entrance of steam is at top, the speed that steam enters is higher (typically in 80~100m/s), and steam is vertically downward simultaneously
Spread (diffusion angle is generally 10 °~15 °) to mismatch with spreading grooves axis arranged direction, the resistance ratios of steam diffusion are larger；
In order that the steam into condenser easily spreads and reduced resistance, this arrangement needs larger steam diffusion space；
Thus it is available for the space of stringing just to reduce in condenser cavity.
The content of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of above-mentioned background technology there is provided a kind of condenser pipe laying structure
Improvement, the pipe laying structure should can arrange more heat exchanger tubes in the condenser of identical size, or same size condensing
Device and same amount of heat exchanger tube, the resistance of steam discharge are lower, and steam discharge condensation effect is more preferable, it is ensured that condenser can design vacuum
Run under pressure, it is ensured that the heat exchange efficiency of condenser.
The technical scheme that the present invention is provided is：
A kind of condenser pipe laying structure of low steam discharge resistance, including it is positioned at several rows of being parallel to each other in condenser cavity
The tube bank of row, the spreading grooves of for the benefit of steam circulation between tube bank, the axis of adjacent spreading grooves is arranged in parallel；Its feature exists
In：The angle of 10~15 ° of the vertical axis formation of the axis and condenser of the spreading grooves.
Each tube bank includes the pipe of multiple marshallings, the positive triangle arrangement of adjacent pipe, and these pipes are in tube bank
It is middle to form several and the small spreading grooves that condenser vertical axis angle is 10~15 °, to accelerate air-flow to turn on.
The two ends of all pipes are separately fixed on the tube sheet at condenser two ends.
The air intake of condenser is located at the top of condenser.
The operation principle of the present invention, is to use the pipe laying structure consistent with steam angle of flare, that is, the spreading grooves between restraining
Axis and condenser vertical axis (i.e. the center line of condenser air inlet) 15 ° of angle of formation, as shown in Figure 1；So
So that diffusion angle (generally 10~15 °) of the angle of spreading grooves axis closer to steam steam flow；It is arranged in outermost expansion
Scattered groove also can preferably cover the scope of air intake, the steam for being discharged into condensing machine is more easily imported spreading grooves and pipe
Gap, greatly reduces steam discharge resistance.Also, it also form some and steam steam flow angle of flare between the pipe row in each tube bank
The close small spreading grooves of degree, the gap of pipe also turns into the space that steam quickly spreads, equivalent to considerably increasing diffusion space；
In other words, it can just split the heat exchanger tube of same row using less spreading grooves, reduce the size of condenser cavity without influenceing
Steam discharge resistance；The condensation effect of condenser is set to reach more preferably state.
Beneficial effects of the present invention are as follows：
1st, air intake is covered by spreading grooves substantially, stringing is arranged into more top, improves the stringing rate of tube sheet.
2nd, less angle of flare, closer to steam flow direction, reduces the resistance that steam enters inside tube bank, improves heat exchange effect
Rate.
3rd, because pipe way is away from consistent with steam flow direction, equivalent to the increase of diffusion space, spreading grooves can be used less
And can be with narrower, reducing the size of condenser also makes stringing more convenient.
Brief description of the drawings
Fig. 1 is pipe laying structure schematic diagram (condenser cross-sectional structure schematic diagram of the invention；Because symmetrical, therefore omit
Left quarter view).
Fig. 2 is the pipe laying structure schematic diagram of existing condenser.
Fig. 3 is arrangement enlarged diagram (the positive equilateral triangle cloth of adjacent pipe of adjacent pipe in existing condenser
Put).
Fig. 4 is the arrangement enlarged diagram (rotating the structure after 15 °) of adjacent pipe in the present invention.
Fig. 5 is the A portions mplifying structure schematic diagram in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawings and the invention will be further described by embodiment.
The piping mode of existing condenser, including the pipe (i.e. heat exchanger tube) of main cold-zone about 1000 and the pipe of air cooling zone 110
Son about 1110 pipes (these pipes constitute several tube banks), and hydroecium tabula board channel 6 and necessary spreading grooves altogether, cloth
Put in a diameter of 2 meters of tube chamber；The two ends of all pipes are separately fixed on the tube sheet at condenser two ends, and condenser enters vapour
Mouth 3 is located at the top of condenser.Tube bank (each tube bank is made up of the pipe of multiple marshallings) arrangement uses zonal distribution, band
A width of 6 row, adjacent pipe arranges (shown in Fig. 3) as positive equilateral triangle, it is necessary to 5 spreading grooves (spreading grooves axis be respectively K1,
K2, K3, K4, K5), outermost spreading grooves axis K5 can only cover at air intake 220mm (half side width is 500mm), no
To half.Top diffusion space is larger (dilation angle about 750mm), and causing steam discharge resistance, (steam enters the resistance that condenser is subject to
Power) it is larger.
The present invention's thes improvement is that：The folder of 15 ° of the formation of vertical axis 5 of the axis and condenser of the spreading grooves
Angle.This original structure need to integrally be turned clockwise 15 ° (Fig. 2 is rotated clockwise 15 ° around condenser axle center O)；
In tube bank, adjacent pipe remains in that equilateral triangle arrangement (shown in Fig. 4；The axis line of two following pipes is with coagulating
The angle of vapour device vertical axis, 105 ° are changed into from 90 °), and each array of pipes (i.e. pipe is arranged) and adjacent row in these pipes
Pipe formed several be parallel to each other and with small spreading grooves (such as small spreading grooves axis that condenser vertical axis angle is 15 °
K10；Referring to Fig. 5), to accelerate air-flow to turn on.
The angle of the vertical axis of spreading grooves axis and condenser is 15 °, outermost spreading grooves K4 after turning clockwise
The outermost (500mm or so) of air intake can be covered, as long as the separation all restrained in Fig. 14 spreading grooves (4 spreading grooves
Axis be respectively K1, K2, K3, K4), pipe row (6 array of pipes) of each tube bank with same width.Meanwhile, adjacent array of pipes
Between with the arrangement architecture that vertical direction angle is 15 °, gap between pipe is turned into small spreading grooves, can preferably evacuate height
The exhaust steam in steam turbine of speed, drops to steam discharge resistance lower, the condensation effect of condenser is more preferably.
In the present invention, the axis of all spreading grooves all faces steam drain direction, and diffusion space is substantially reduced (dilation angle
About 500mm) be equally zonal distribution pipe, structure can be with more compact.The cavity diameter of condenser be can be made smaller, because
And with higher cooling performance and greater compactness of structure；Competition so can be participated in lower cost and better performance.
After testing, the present invention can make total steam discharge resistance decline more than 20% compared with existing structure, or not increase steam discharge resistance
On the premise of reduce condenser lumen diameter more than 5% (tube chamber cross-sectional area declines more than 10%).
Also have in figure：Condenser shell 1, air inlet case 2.
Claims (4)
1. a kind of condenser pipe laying structure of low steam discharge resistance, including it is positioned in condenser cavity several and is arranged parallel to each other
Tube bank, the spreading grooves of for the benefit of steam circulation between tube bank, the axis of adjacent spreading grooves is arranged in parallel；It is characterized in that：
The angle of the axis (K1, K2, K3, K4) of the spreading grooves and 10~15 ゜ of vertical axis (5) formation of condenser.
2. the condenser pipe laying structure of low steam discharge resistance according to claim 1, it is characterised in that：Each tube bank includes many
It is perpendicular with condenser that the pipe of individual marshalling, the positive triangle arrangement of adjacent pipe, and these pipes form several in tube bank
The small spreading grooves (K10) that straight axis angle is 10~15 ゜, to accelerate air-flow to turn on.
3. the condenser pipe laying structure of low steam discharge resistance according to claim 2, it is characterised in that：The two ends of all pipes
On the tube sheet for being separately fixed at condenser two ends.
4. the condenser pipe laying structure of low steam discharge resistance according to claim 3, it is characterised in that：The air intake of condenser
(3) it is located at the top of condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710616796.7A CN107289792B (en) | 2017-07-26 | 2017-07-26 | Condenser pipe distribution structure with low exhaust resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710616796.7A CN107289792B (en) | 2017-07-26 | 2017-07-26 | Condenser pipe distribution structure with low exhaust resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107289792A true CN107289792A (en) | 2017-10-24 |
| CN107289792B CN107289792B (en) | 2023-05-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710616796.7A Active CN107289792B (en) | 2017-07-26 | 2017-07-26 | Condenser pipe distribution structure with low exhaust resistance |
Country Status (1)
| Country | Link |
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| CN (1) | CN107289792B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357542A (en) * | 2018-09-18 | 2019-02-19 | 董若言 | A kind of condenser pipelaying method of low steam discharge coagulation resistance |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR572536A (en) * | 1923-11-02 | 1924-06-07 | Delas Condenseurs | Improvements to the arrangement of the tubes of the condenser bundle by surface or similar devices |
| GB226768A (en) * | 1923-12-29 | 1925-05-26 | Delas Condenseurs | Improvements in the disposition of the tubes of the tubular set in surface condensers or like apparatus |
| CN1158749A (en) * | 1995-02-23 | 1997-09-10 | 通用电气阿尔斯通德拉斯公司 | Bundle of tubes for steam condenser |
| CN1896675A (en) * | 2006-06-29 | 2007-01-17 | 上海交通大学 | Branch-shaped tubing-beam module of side steam-flow condenser |
| CN102121797A (en) * | 2011-03-13 | 2011-07-13 | 东方电气集团东方汽轮机有限公司 | Tube tank of turbine condenser |
| CN203837515U (en) * | 2013-10-29 | 2014-09-17 | 北京全四维动力科技有限公司 | Novel condenser tube row |
| CN104266501A (en) * | 2014-10-17 | 2015-01-07 | 上海电力学院 | Narrow-band concurrent steam condenser tube bundle with dual-trapezoid air cooling region |
| CN105737629A (en) * | 2016-04-21 | 2016-07-06 | 上海电力学院 | Condenser pipe bundle |
| CN207095328U (en) * | 2017-07-26 | 2018-03-13 | 杭州国能汽轮工程有限公司 | A kind of condenser pipe laying structure of low steam discharge resistance |
-
2017
- 2017-07-26 CN CN201710616796.7A patent/CN107289792B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR572536A (en) * | 1923-11-02 | 1924-06-07 | Delas Condenseurs | Improvements to the arrangement of the tubes of the condenser bundle by surface or similar devices |
| GB226768A (en) * | 1923-12-29 | 1925-05-26 | Delas Condenseurs | Improvements in the disposition of the tubes of the tubular set in surface condensers or like apparatus |
| CN1158749A (en) * | 1995-02-23 | 1997-09-10 | 通用电气阿尔斯通德拉斯公司 | Bundle of tubes for steam condenser |
| CN1896675A (en) * | 2006-06-29 | 2007-01-17 | 上海交通大学 | Branch-shaped tubing-beam module of side steam-flow condenser |
| CN102121797A (en) * | 2011-03-13 | 2011-07-13 | 东方电气集团东方汽轮机有限公司 | Tube tank of turbine condenser |
| CN203837515U (en) * | 2013-10-29 | 2014-09-17 | 北京全四维动力科技有限公司 | Novel condenser tube row |
| CN104266501A (en) * | 2014-10-17 | 2015-01-07 | 上海电力学院 | Narrow-band concurrent steam condenser tube bundle with dual-trapezoid air cooling region |
| CN105737629A (en) * | 2016-04-21 | 2016-07-06 | 上海电力学院 | Condenser pipe bundle |
| CN207095328U (en) * | 2017-07-26 | 2018-03-13 | 杭州国能汽轮工程有限公司 | A kind of condenser pipe laying structure of low steam discharge resistance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357542A (en) * | 2018-09-18 | 2019-02-19 | 董若言 | A kind of condenser pipelaying method of low steam discharge coagulation resistance |
| CN109357542B (en) * | 2018-09-18 | 2020-07-07 | 董若言 | Condenser pipe arrangement method with low exhaust steam condensation resistance |
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| Publication number | Publication date |
|---|---|
| CN107289792B (en) | 2023-05-05 |
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