CN101691968A - Multi-area tube bundle of condenser - Google Patents
Multi-area tube bundle of condenser Download PDFInfo
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- CN101691968A CN101691968A CN200910195054A CN200910195054A CN101691968A CN 101691968 A CN101691968 A CN 101691968A CN 200910195054 A CN200910195054 A CN 200910195054A CN 200910195054 A CN200910195054 A CN 200910195054A CN 101691968 A CN101691968 A CN 101691968A
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- main condensing
- condensing zone
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- condenser
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Abstract
The invention relates to a multi-area tube bundle of a condenser, which is characterized in that the multi-area tube bundle consists of at least two rows of small tube bundles, wherein steam flow channels are at two sides of each row of small tube bundles, a bottom reheating area is at the lower part of the small tube bundle, each row of small tube bundles comprises a trapezoidal main condensing area, a steam toward area is formed at the upper end of the main condensing area, an octagonal blank area is reserved at the bottom of the main condensing area, the axis of the octagonal blank area is overlapped with the axis of the main condensing area, the axis in the main condensing area is provided with an air pumping passage which is communicated with the octagonal blank area, the left side and the right side of the main condensing area are symmetrically provided with downwards oblique small steam passages, the middle part of the octagonal blank area is provided with an oblong air cooling area, and the main condensing area and the air cooling area are formed by tightly arranging tubes in triangular arrangement with each other. The multi-area tube bundle of the condenser has the advantages of smooth steam flow line, no dead area and good heat transfer performance.
Description
Technical field
The present invention relates to a kind of multi-area tube bundle of condenser, be applied on the industry condenser equipment of power station.
Background technology
Condenser is one of visual plant in the Power Plant Thermal System, when auxiliary device operate as normal such as water circulating pump and vavuum pump, the every reduction of the vacuum of condenser 1kPa, the efficient of steam-turbine plant will increase 1～2%, so how to obtain comparatively ideal vacuum, particularly important to improving large-scale unit economy.
Steam has just entered tube bank and the time can take place to condense on a large scale, and air content is seldom in this moment steam; Simultaneously extract the district at steam-air mixture, it is quite slow that the phenomenon of condensing takes place, and be accompanied by the serious surfusion of condensate water generation; Steam has just entered when tube bank, and the resistance that the scouring intensity and the vapour phase of overhead coil bundle flowed is big; It is unreasonable that tube bank is arranged, heat load distribution is inhomogeneous, causes the heat transfer dead angle, affects mean temperature difference; It is unreasonable that tube bank is arranged, arranges the too intensive vapour locking height that causes; It is unreasonable that tube bank is arranged, causing does not have enough backheat spaces, makes hot-well depression, and the oxygen content height is very big to the safety hazard of whole unit.
Summary of the invention
The purpose of this invention is to provide the little tube bank of the favorably situated condenser multizone of a kind of tube bank.
In order to achieve the above object, technical scheme of the present invention has provided a kind of multi-area tube bundle of condenser, it is characterized in that, by at least two row tubule Shu Zucheng, the both sides of the little tube bank of every row are steam flow channel, it below little tube bank bottom thermal region again, the little tube bank of every row, comprise trapezoidal main condensing zone, be formed with in the upper end of main condensing zone and meet the vapour district, leave an octagonal white space in the bottom of main condensing zone, the axis of octagon white space and the dead in line of main condensing zone have the exhaust passage on the axis in main condensing zone, the exhaust passage is communicated with the octagon white space, must have steam passage aisle under oblique in the left and right sides of main condensing zone symmetry, be provided with rectangular air cooling zone at the middle part of octagon white space, main condensing zone and air cooling zone are formed near arrangement mutually by the pipe that is triangularly arranged.
Little tube bank in the tube bank provided by the invention is adopted rounded projections arranged on the pipe arrangement mode, can obtain the higher heat transfer and the ability of mass transfer.The air cooling zone reasonable Arrangement of little tube bank, steam is cooled off step by step to air cooling zone by tubule bundle outside and condenses, it is short that the import of tubule bundle flows to the steam flow flow process of bleeding point, and prevent the new steam flow that does not condense as yet and passed through the steam flow blending that cooling tube has condensed, effectively extract non-condensing gas out, improved the heat transfer property of condenser.Simultaneously, the layout of the intrafascicular air cooling zone of this tubule does not contact condensate water that main condensing zone falls with the high vapour-gas mixture of air content, and has rational steam channel and backheat space to make an amount of steam flow tube bank bottom backheat condensate water.
Advantage of the present invention is: the steam streamline is level and smooth, does not have the dead band, has the good heat transfer performance.
Description of drawings
Fig. 1 is the schematic diagram of a kind of multi-area tube bundle of condenser provided by the invention;
Fig. 2 is the partial enlarged drawing of meeting vapour district part.
The specific embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment
As shown in Figures 1 and 2, be the schematic diagram of a kind of multi-area tube bundle of condenser provided by the invention, 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 4 again below little tube bank.The number of little tube bank satisfies the requirement of the different cooling water inflow of each condenser, adapts to if the thermic load of condenser changes the number that then can change little tube bank.
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, have exhaust passage 6 on the axis in main condensing zone 2, exhaust passage 6 is communicated with the octagon white space, must have steam passage aisle 5 under oblique in the left and right sides of main condensing zone 2 symmetry, 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 mutually with air cooling zone 3.
The course of work of tube bank of the present invention is: steam gets off from connecing neck, and a part of steam is to meeting vapour district 1, and the unexpected variation of circulation area makes vapour locking herein account for the sizable ratio of total vapour locking.In order to reduce vapour locking herein, need to strengthen tube bank admission girth, increase the admission width of flow path and reduce the flow velocity that enters tube bank, reduce the pressure loss with this.Therefore a part of steam enters main condensing zone 2 by peripheral steam passage aisle 5, and along with constantly condensing of steam, flow constantly reduces.Further cool off the not condensing vapour of remnants again to air cooling zone 3, reduce the working medium loss, increase the degree of supercooling of vapour-gas mixture, reduce the load of the equipment of drawing gas, the vapour-gas mixture flows to bleeding point in air cooling zone 3, its path is short and straight, and it is little that mixture is fallen to the pressure of the whole distance of bleeding point, and last non-condensing gas is extracted out by vavuum pump.Another fraction steam arrives bottom thermal region 4 again by both sides steam flow channel 7, and the condensate water in the hot well is carried out hot deoxygenation again, reduces condensate undercooling, reduces oxygen content.
Claims (1)
1. multi-area tube bundle of condenser, it is characterized in that, by at least two row tubule Shu Zucheng, the both sides of the little tube bank of every row are steam flow channel (7), it below little tube bank bottom thermal region (4) again, 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), have exhaust passage (6) on the axis in main condensing zone (2), exhaust passage (6) is communicated with the octagon white space, must have steam passage aisle (5) under oblique in the left and right sides symmetry 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 mutually with air cooling zone (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910195054A CN101691968A (en) | 2009-09-03 | 2009-09-03 | Multi-area tube bundle of condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910195054A CN101691968A (en) | 2009-09-03 | 2009-09-03 | Multi-area tube bundle of condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101691968A true CN101691968A (en) | 2010-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910195054A Pending CN101691968A (en) | 2009-09-03 | 2009-09-03 | Multi-area tube bundle of condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101691968A (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 |
| CN111578734A (en) * | 2020-04-07 | 2020-08-25 | 东方电气集团东方汽轮机有限公司 | Condenser |
-
2009
- 2009-09-03 CN CN200910195054A patent/CN101691968A/en active Pending
Cited By (3)
| 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 |
| CN111578734A (en) * | 2020-04-07 | 2020-08-25 | 东方电气集团东方汽轮机有限公司 | Condenser |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100407 |