CN202229621U - Twin-tower pipe bundle for condenser - Google Patents
Twin-tower pipe bundle for condenser Download PDFInfo
- Publication number
- CN202229621U CN202229621U CN2011203414072U CN201120341407U CN202229621U CN 202229621 U CN202229621 U CN 202229621U CN 2011203414072 U CN2011203414072 U CN 2011203414072U CN 201120341407 U CN201120341407 U CN 201120341407U CN 202229621 U CN202229621 U CN 202229621U
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- steam
- regions
- tube bank
- main
- main condensing
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Abstract
The utility model relates to a twin-tower pipe bundle for a condenser. The twin-tower pipe bundle consists of two rows of symmetrical pipe bundles, steam channels are arranged on two sides of each row of pipe bundles, bottom heat return regions are below the pipe bundles, each row of pipe bundles comprise a main trapezoid condensation region, steam-ward regions are arranged at the upper ends of the main condensation regions, a polygonal blank region is reserved at the bottom of each main condensation region, the center lines of the polygonal blank regions are superposed with those of the main condensation regions, an air extraction channel is arranged on one side of each main condensation region, a plurality of small obliquely downward steam channels are symmetrically formed on the left side and the right side of each main condensation region, rectangular air cooling regions are arranged in the polygonal blank regions, and the main condensation regions and the air cooling regions are formed by pipes which are arranged in a regular triangle and are in a mutually adjoining manner. The twin-tower pipe bundle provided by the utility model has the advantages of smooth steam flow line, no dead area, small steam resistance, favorable heat-transfer property, and reduced condensate depression and oxygen content.
Description
Technical field
The utility model relates to a kind of condenser double-tower type tube bank, is applied on the industry condenser equipment of power station.
Background technology
In the Large Power Plant Equipment, condenser is an important component part of steam turbine in modern times, and the vacuum of condenser not only can influence the economy of unit greatly, but also possibly influence the operational reliability of Steam Turbine.
It is the most important link of condenser design that tube bank is arranged; When auxiliary device operate as normal such as water circulating pump and vavuum pump; Make condenser keep desirable vacuum; Depend primarily on bank of condenser pipes and whether have the good heat transfer performance, the quality of each item thermal performance index when the quality of therefore restraining type of array has determined the condenser operation.
Summary of the invention
The purpose of the utility model provides a kind of favorably situated double-tower type bank of condenser pipes; In order to achieve the above object; The cooling tube of the some that draws through overall heat transfer coefficient calculations method is earlier reasonably arranged and combination in the shell space scope, constitutes the tube bank of definite shape; Adopt method for numerical simulation then, tube bank is arranged carry out numerical analysis, distribution maps such as heat outputting load, velocity field, temperature field, pressure fall, air concentration, the coefficient of heat transfer; Analysis and research condenser flow field and thermal performance are arranged tube bank and are optimized improvement.
The architectural feature of this tube bank is: the tower tube bank by two row symmetric arrangement is formed, and the cooling tube quantity of two tubulation bundles is identical, and every tubulation bundle comprises main condensing zone, meets vapour district and three parts of air cooling zone.Main condensing zone top is trapezoidal, and the bottom is a rectangle, has some little steam passages of steam under oblique in the left and right sides of main condensing zone symmetry; Outer being with at main condensing zone met the vapour district; Air cooling zone is a rectangle, is positioned at the polygonal white space of the Lower Half position of main condensing zone, the center line of air cooling zone and the central lines of main condensing zone.Main condensing zone, meet vapour district and air cooling zone and form near arrangement each other by the pipe that equilateral triangle arranges that is of same pitch.The both sides of the tower tube bank of every row are steam channel; Every tubulation bundle below is the backheat district; One side of each tower tube bank is provided with the exhaust passage; The exhaust passage is communicated with the polygon white space, the exhaust passage symmetric arrangement of the tower tube bank of adjacent two row, and the exhaust passage is simultaneously for being provided with the steam baffle district.
The performance advantage of this tube bank be following some:
1) the utility model adopts equilateral triangle to arrange on the pipe arrangement mode in order to obtain the higher heat transfer and the ability of mass transfer, and tube bank is arranged and gone up the combined type tube bank of adopting little intensity.The steam streamline of this tube bank is level and smooth, does not have the dead band, has the good heat transfer performance.Each tube bank has certain number of tubes, to adapt to the requirement of each condenser difference and cooling water inflow.The air cooling zone connection and reasonable arrangement; Steam is condensed by outside the cooling step by step to air cooling zone of tube bank, and the tube bank inlet flow is short to the air-flow flow process of bleeding point, and prevents new steam flow that does not condense as yet and the steam flow blending of having condensed through cooling tube; Effectively extract non-condensing gas out, improved the heat transfer property of condenser.
2) layout of this tube bank air cooling zone condensate that main condensing zone is fallen does not contact with the high vapour-gas mixture of air content; And have rational steam channel and backheat space to make an amount of steam flow tube bank bottom backheat condensate, thereby reduce condensate undercooling and oxygen content.
3) every tubulation Shu Caiyong full admission formula; Enlarged steam and got into the area of tube bank, reduced the vapor (steam) velocity that gets into tube bank, steam condensation is uniformly and effectively got off; And can let the later excessively tube bank of less vapor stream; This tube bank can reduce row's number of restraining on the grain direction, and the steam streamline in the tube bank is straight and short prompt, has reduced the flow velocity of steam in tube bank.This tube bank also makes the interior steam flow rate of each passage reach unanimity, and avoids vortex phenomenon.This tube bank is arranged and is all helped reducing vapour locking.
Description of drawings
The sketch map that Fig. 1 restrains for a kind of condenser double-tower type that the utility model provides.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description.
As shown in Figure 1, the sketch map of a kind of condenser double-tower type tube bank that provides for the utility model is made up of two row symmetry tube banks; The both sides of every tubulation bundle are steam flow channel 7; Be backheat zone, bottom 8 below every tubulation bundle, every tubulation bundle comprises trapezoidal main condensing zone 2, meets vapour district 1 in the upper end of main condensing zone 2; In the bottom of main condensing zone 2, leave a polygonal white space; The central lines of the center line of polygon white space and main condensing zone 2 has exhaust passage 6 at the side of main condensing zone 2, and exhaust passage 6 is communicated with the polygon white space; Exhaust passage 6 symmetric arrangement on the two tubulation bundles; Have the steam passage aisle 5 under oblique symmetrically at the right and left of main condensing zone 2, be provided with rectangular air cooling zone 3, meet vapour district 1, main condensing zone 2 and air cooling zone 3 and arrange and form by being pipe that equilateral triangle arranges at the middle part of polygon white space.Exhaust passage 6 is simultaneously also for being provided with steam baffle district 4.
The course of work of the tube bank of the utility model is: tube bank is made up of two row symmetry tube banks, and every tubulation harness shape is long and narrow, every pipe Shu Youyi air cooling zone, and the cooling tube number of every tubulation bundle is identical.Steam is flowed through to connect from turbine low pressure cylinder and is got into tube bank behind the neck.After vapour district 1 was met at steam arrival top, the unexpected variation of circulation area made the vapour locking here account for the sizable ratio of total vapour locking.In order to reduce vapour locking, need to strengthen tube bank admission girth, increase the admission width of flow path and reduce the flow velocity that gets into tube bank, reduce the pressure loss with this.Therefore the little steam passage 5 of steam is set makes most of steam meet the main condensing zone 2 of vapour district 1 entering through little steam passage 5 and both sides, steam progressively condenses at main condensing zone 2, and flow constantly reduces, and non-condensing gas is progressively separated out simultaneously.The vapour-gas mixture gets into air cooling zone 3 further cools off remaining not condensing vapour; Thereby reduce the working medium loss; Increase the degree of supercooling of vapour-gas mixture; Reduce the equipment load of drawing gas, the vapour-gas mixture that has comprised non-condensing gas at last flows to bleeding point from air cooling zone 3, is extracted out by vaccum-pumping equipment.This tube bank arranges that to make steam inlet flow to the flow path of bleeding point short and straight; The vapour locking of whole flow process is reduced, and another fraction steam arrives backheat zone, bottom 8 by both sides steam flow channel 7, and the condensate in the hot well is carried out the backheat deoxygenation; Reduce condensate undercooling, reduce oxygen content.
Claims (1)
1. a condenser double-tower type tube bank is characterized in that, by two row tubule Shu Zucheng; The both sides of the little tube bank of every row are steam flow channel (7), are bottom thermal region (8) again below little tube bank, and the little tube bank of every row comprises trapezoidal main condensing zone (2); Be formed with in the upper end of main condensing zone (2) and meet vapour district (1); In the bottom of main condensing zone (2), leave an octagonal white space, the dead in line of the axis of octagon white space and main condensing zone (2) is in the left and right sides of octagon white space; Restrain in opposite directions for two and have exhaust passage (6) on the direction; Exhaust passage (6) is communicated with the octagon white space, and places steam baffle at steam baffle rest area (4), has the steam passage aisle (5) under oblique symmetrically in the left and right sides of main condensing zone (2); Be provided with rectangular air cooling zone (3) at the middle part of octagon white space, main condensing zone (2) is formed near arrangement by the pipe that is triangularly arranged with air cooling zone (3) each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203414072U CN202229621U (en) | 2011-09-13 | 2011-09-13 | Twin-tower pipe bundle for condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203414072U CN202229621U (en) | 2011-09-13 | 2011-09-13 | Twin-tower pipe bundle for condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202229621U true CN202229621U (en) | 2012-05-23 |
Family
ID=46080206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203414072U Expired - Fee Related CN202229621U (en) | 2011-09-13 | 2011-09-13 | Twin-tower pipe bundle for condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202229621U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737629A (en) * | 2016-04-21 | 2016-07-06 | 上海电力学院 | Condenser pipe bundle |
| CN106288845A (en) * | 2016-09-27 | 2017-01-04 | 德阳东汽电站机械制造有限公司 | A kind of condenser of Novel pipe laying mode |
-
2011
- 2011-09-13 CN CN2011203414072U patent/CN202229621U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737629A (en) * | 2016-04-21 | 2016-07-06 | 上海电力学院 | Condenser pipe bundle |
| CN105737629B (en) * | 2016-04-21 | 2018-06-29 | 上海电力学院 | Bank of condenser pipes |
| CN106288845A (en) * | 2016-09-27 | 2017-01-04 | 德阳东汽电站机械制造有限公司 | A kind of condenser of Novel pipe laying mode |
| CN106288845B (en) * | 2016-09-27 | 2018-04-10 | 德阳东汽电站机械制造有限公司 | A kind of condenser of novel pipe laying mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20180913 |