CN100498191C - Emulated steam floating flow path device of steam condenser of power station - Google Patents
Emulated steam floating flow path device of steam condenser of power station Download PDFInfo
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- CN100498191C CN100498191C CNB2006100226959A CN200610022695A CN100498191C CN 100498191 C CN100498191 C CN 100498191C CN B2006100226959 A CNB2006100226959 A CN B2006100226959A CN 200610022695 A CN200610022695 A CN 200610022695A CN 100498191 C CN100498191 C CN 100498191C
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Abstract
The invention discloses an steam flow simulator used in condenser of power plant, comprising at least one steam process plate (3), two side baffle plates (4), and at least 50 through holes (5) distributed on the steam process plate (3), wherein the side plates (4) are respectively mounted on two ends of the steam process plate (3), the through holes simulate the steam passing through a circular cooling water tube beam, the steam in the steam channel on the steam process plate is uniformly distributed to eliminate steam vortex, obtain uniform steam speed in lower tube beam area, reduce steam resistance of condenser, and improve thermal conductive factor of condenser, to be used in dual-process condenser, with ascending and descending cooling directions.
Description
Technical field
The present invention always relates to condenser of power station, relates more specifically to be used for a kind of sream check device between the upper and lower tube bank of the upper and lower double-flow condenser that turns to of the recirculated cooling water district.
Background technology
Condenser is one of main auxiliary equipment of steam turbine, and it mainly acts on is that the steam that utilizes recirculated cooling water that steam turbine is discharged condenses into water, sets up and keep needed vacuum in the turbine discharge space, reclaims condensate water for boiler feedwater.Can be divided into single process and two kinds of condensers of double-current journey according to the various flows number of passes amount of recirculated cooling water in condenser.
As Fig. 1 is the upper and lower double-flow condenser that turns to of recirculated cooling water, and wherein, main steam is designated 9, and last cooling tube bundle district is 10, and following cooling tube bundle district is 11.Because upper and lower cooling tube bundle district must arrange hydroecium flow process dividing plate and hydroecium flange, can't arrange cooling water pipe in making between the upper and lower tube bank district in a big way, to cause thus: initial steam and the vapor mixing that contains a large amount of air in (1) condenser cause heat transfer efficiency to reduce; (2) the easy short circuit of the steam of main steam passage directly arrives air cooling zone without crossing abundant condensation, is drawn out of condenser.Therefore, generally need sream check device be set for the upper and lower double-flow condenser that turns to of recirculated cooling water in the vapor space between the upper and lower tube bank district.
Known to the inventor, on the existing recirculated cooling water, the double-current journey condenser of power station that turns to down adopts usually last, the sream check device that vapor space setting between the following tube bank district is made up of horizontal steam baffle 1 and vertical steam baffle 2, be illustrated in figure 2 as on the condenser of cooling water pipe employing ovum type comb mode, arrange the schematic diagram of sream check device between the following tube bank, turbine discharge at first enters the tube bank of going up of condenser and distinguishes 10, on the process behind the tube bank district remaining main steam enter down tube bank district 11 by horizontal steam baffle 1, air cooling zone, last air and on a small quantity not condensing vapour be drawn out of.And the effect of vertical steam baffle 2 is that the space of will restrain between district and the condenser sidewall paneling 8 is that steam main channel and tube bank separate out, to prevent the main steam short circuit. it can also be seen that from Fig. 2, reach to flow directly into down to restrain after stoping residual steam and main steam being mixed and distinguish, need in the same cross section of the vapor space between the upper and lower tube bank district, one or more such sream check devices be set in general.Fig. 3 has showed the detail of construction of the observed existing sream check device of main steam 9 flow directions in the condenser, facts have proved, there is following shortcoming in this apparatus structure: owing to offer the rectangle steam channel of big cross section on the horizontal steam baffle 1, make that the steam flow rate that enters down tube bank district 11 is inhomogeneous, particularly below the steam baffle beyond the rectangular channel of horizontal steam baffle 1, exist than the maelstrom district, cause condenser vapor stream dynamic resistance to increase, condenser overall heat transfer coefficient reduces, and the condenser performance driving economy is poor.
Summary of the invention
It is even that main purpose of the present invention provides a kind of steam flowing velocity that enters tube bank district under the condenser that can make, and do not produce the steam vortex, reduces the condenser vapour locking significantly, improves a kind of sream check device of condenser overall heat transfer coefficient.
The present invention is achieved by the following technical programs:
A kind of steam condenser of power station imitating steam floating flow path device, comprise: one or more steam flow plates, two side steam baffles are distributed with the through hole more than at least 50 on the described steam flow plate, described side steam baffle is arranged at the two ends of described steam flow plate respectively.
Through hole on the described steam flow plate is cylindrical.
Through hole on the described steam flow plate is a polygon.
When having two or more described steam flow plates, the position that is positioned at the through hole on the described steam flow plate between each described steam flow plate is alignment mutually.
When having two or more described steam flow plates, the position that is positioned at the through hole on the described steam flow plate between each described steam flow plate is a mutual dislocation.
Because institute's number of openings of offering is more on the steam flow plate, promptly at least more than 50, and the flow regime when steam is distinguished by the recirculated cooling water tube bank has been simulated in the arrangement between each through hole, vapor stream is crossed steam flow plate and steam cross-current, and to cross the resistance of recirculated cooling water tube bank suitable, make steam can evenly flow through each through hole on the steam flow plate, enter down the tube bank district, thereby below the steam flow plate, there is not the steam vortex, reach reduction condenser vapour locking, improved condenser overall heat transfer coefficient purpose.
Description of drawings
Fig. 1 is the fundamental diagram of the upper and lower double-flow condenser that turns to of recirculated cooling water
Fig. 2 is an A-A profile among Fig. 1
Fig. 3 is existing sream check device structural representation
Fig. 4 is the steam condenser of power station imitating steam floating flow path device schematic diagram with two parallel distribution steam flow plates
Fig. 5 is that the B of Fig. 4 is to view
Fig. 6 is that the C of Fig. 4 is to view
Fig. 7 is a kind of embodiment schematic diagram that is arranged in the steam condenser of power station imitating steam floating flow path device between the upper and lower tube bank of condenser
The specific embodiment
Below in conjunction with embodiment, technical scheme of the present invention is further described:
Steam condenser of power station imitating steam floating flow path device comprises one or more steam flow plate 3, two side steam baffles 4, is the steam condenser of power station imitating steam floating flow path device with two steam flow plates 3 as Fig. 4.Shown in Fig. 4,5, offering the through hole 5 more than 50 on the steam flow plate 3.As shown in Figure 7, during this device work, the passage of through hole 5 is consistent with main steam 9 flow directions in the condenser, and side steam baffle 4 is arranged at the two ends of steam flow plate 3 respectively, and its board plane is consistent with condenser circulating cooling water pipe line road direction.
The present invention innovates part and is: the flow behavior of steam in the condenser and the layout feature of recirculated cooling water tube bank are combined, abandon the irrational factor of steam passage structure in the existing sream check device, adopted the retaining vapour structure of simulation vapor stream dynamic characteristic promptly to simulate the mobile flow path device of steam.In this device, because main steam 9 runner directions are perpendicular in the board plane of steam flow plate 3 and the condenser, as long as at the through hole of offering on the steam flow plate 3 more than 50 5, suffered resistance and main steam 9 cross-currents are crossed the suffered resistance in recirculated cooling water tube bank district when suitable when main steam 9 flows through through hole 5 on the steam flow plate 3, the steam flow rate that flows through steam flow plate 3 is not only even, and the below of steam flow plate 3 can not form the steam vortex yet.
What need illustrate is:
One: the shape of the through hole 5 on the steam flow plate 3 includes, but are not limited to cylindrical, can be the through hole 5 of other shape, as polygon etc.Through hole 5 shown in Figure 4 is cylindrical.
Its two: the arrangement of the through hole 5 on the steam flow plate 3 can have different modes, as: polygon and circular arcs such as rectangle, square, and preferably equally distributed between through hole 5 and the through hole 5, can certainly not equally distributed, the schematic diagram when Fig. 5 is through hole 5 rectangular arranged.
Its three: the pore size of through hole 5 can be according to actual conditions on the steam flow plate 3, wait to determine, but need assurance to have at least as the quantity of through hole 5, the size of steam flow plate 3, the speed that consideration main steam 9 cross-currents are crossed the recirculated cooling water tube bank, the resistance that is subjected to greater than 50 described through holes 5.
Its four: the objective physical dimension of inner other parts adjacent with steam flow plate 3 of concrete condition that the size of steam flow plate 3 is then arranged by recirculated cooling water tube bank (promptly going up tube bank 10 and tube bank 11 down) and condenser is determined.
They are five years old, what need further emphasize is, when having two or more steam flow plates 3 in apparatus of the present invention, can be parallel to each other between each steam flow plate 3 or not parallel, and side steam baffle 4 can be vertical with the two ends of steam flow plate 3 also can out of plumb.The steam condenser of power station imitating steam floating flow path device of the steam flow plate 3 that includes two parallel and horizontal distribution that is illustrated in figure 4 as that the inventor provides.
Its six: in steam condenser of power station imitating steam floating flow path device with two or more steam flow plates 3, through hole 5 between each steam flow plate 3 both can align, also can mutual dislocation, as long as can reach simulation main steam 9 cross-currents crosses the state of recirculated cooling water tube bank, eliminates steam vortex, steam flow plate 3 below, make the steam flow rate that enters down tube bank district 11 even, reduce the condenser vapour locking, the purpose that improves condenser overall heat transfer coefficient gets final product.
Be embodiment now, connection and the method for arranging of steam condenser of power station imitating steam floating flow path device in condenser be described to have two parallel and steam flow plates 3 horizontal distribution:
As shown in Figure 6, generally take grooved bore on sagging plate 6, after steam flow plate 3 passes the slotted eye of being opened on the sagging plate 6, again that steam flow plate 3 is fixing with sagging plate 6; Then link to each other with the end of the steam flow plate 3 of circulating cooling water pipe beam passage vertical direction and be fixed together with the end tube sheet 7 of condenser.Two side steam baffles 4 are vertically set on two ends of the steam flow plate 3 identical with circulating cooling water pipe beam passage direction respectively, are that steam main channel and recirculated cooling water are restrained to separate and got final product with tube bank district and space between the condenser sidewall paneling 8.In this embodiment, during condenser work, the steam turbine exhaust steam at first enters tube bank district 10, and the top steam flow plate 3 through in apparatus of the present invention enters the steam flow plate 3 of bottom, thereby makes steam evenly enter down tube bank district 11.
Fig. 7 is a kind of embodiment schematic diagram that steam condenser of power station imitating steam floating flow path device is arranged between the upper and lower tube bank of condenser of the present invention when cooling water pipe is modular comb mode, in the present embodiment, 4 steam condenser of power station imitating steam floating flow path device have been adopted.Certainly can be according to the structural condition of condenser, between upper and lower tube bank district, one or more steam condenser of power station imitating steam floating flow path device is set, preferably be arranged in the same plane, to guarantee that the flow path device between the upper and lower tube bank is evenly arranged in the whole steam channel cross section, guarantees good steam flowability.
Can also learn from above embodiment, the present invention is applicable to the upper and lower double-flow condenser that turns to of recirculated cooling water, and the arrangement mode of circulating cooling water pipe tube bank both can be a modular comb mode, also can be ovum type comb mode, or the present invention do not mention other have the condenser of power station of the upper and lower double-flow condenser architectural feature that turns to of recirculated cooling water.
Claims (5)
1, a kind of steam condenser of power station imitating steam floating flow path device, comprise: one or more steam flow plates (3), two side steam baffles (4), be distributed with the through hole (5) more than 50 on the described steam flow plate (3), described side steam baffle (4) is arranged at the two ends of described steam flow plate (3) respectively.
2, steam condenser of power station imitating steam floating flow path device as claimed in claim 1 is characterized in that: the through hole (5) on the described steam flow plate (3) is for cylindrical.
3, steam condenser of power station imitating steam floating flow path device as claimed in claim 1 is characterized in that: the through hole (5) on the described steam flow plate (3) is a polygon.
4, steam condenser of power station imitating steam floating flow path device as claimed in claim 1, it is characterized in that: when having two or more described steam flow plates (3), the position that is positioned at the through hole (5) on the described steam flow plate (3) between each described steam flow plate (3) is alignment mutually.
5, steam condenser of power station imitating steam floating flow path device as claimed in claim 1, it is characterized in that: when having two or more described steam flow plates (3), the position that is positioned at the through hole (5) on the described steam flow plate (3) between each described steam flow plate (3) is a mutual dislocation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100226959A CN100498191C (en) | 2006-12-29 | 2006-12-29 | Emulated steam floating flow path device of steam condenser of power station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100226959A CN100498191C (en) | 2006-12-29 | 2006-12-29 | Emulated steam floating flow path device of steam condenser of power station |
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| CN101017071A CN101017071A (en) | 2007-08-15 |
| CN100498191C true CN100498191C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100226959A Active CN100498191C (en) | 2006-12-29 | 2006-12-29 | Emulated steam floating flow path device of steam condenser of power station |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102305553B (en) * | 2011-08-12 | 2012-09-26 | 浙江省电力试验研究院 | Determination method of total heat transfer coefficient of condenser of thermal generator set |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| EP0976998A1 (en) * | 1998-07-30 | 2000-02-02 | Asea Brown Boveri AG | Steam condenser |
| JP2000227286A (en) * | 1999-02-03 | 2000-08-15 | Hitachi Ltd | Condenser |
| CN2481971Y (en) * | 2001-06-15 | 2002-03-13 | 东方汽轮机厂 | Module pipe bundle structure of condenser for power station |
-
2006
- 2006-12-29 CN CNB2006100226959A patent/CN100498191C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| EP0976998A1 (en) * | 1998-07-30 | 2000-02-02 | Asea Brown Boveri AG | Steam condenser |
| JP2000227286A (en) * | 1999-02-03 | 2000-08-15 | Hitachi Ltd | Condenser |
| CN2481971Y (en) * | 2001-06-15 | 2002-03-13 | 东方汽轮机厂 | Module pipe bundle structure of condenser for power station |
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| CN101017071A (en) | 2007-08-15 |
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