CN207095328U - 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
- CN207095328U CN207095328U CN201720912930.3U CN201720912930U CN207095328U CN 207095328 U CN207095328 U CN 207095328U CN 201720912930 U CN201720912930 U CN 201720912930U CN 207095328 U CN207095328 U CN 207095328U
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- Prior art keywords
- condenser
- spreading grooves
- steam discharge
- laying structure
- pipe laying
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Abstract
It the utility model is related 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 condenser and the 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, ensure 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, the axis of adjacent spreading grooves are arranged in parallel between tube bank；It is characterized in that：The axis of the spreading grooves and the vertical axis of condenser form 10~15 ゜ angle.
Description
Technical field
It the utility model is related to a kind of arrangement of the heat exchanger tube of the condenser of turbine discharge condensation, specifically one
Kind reduces turbine discharge resistance, can improve the compact-sized heat exchange tube of condenser arrangement of condenser soil-pipe interaction rate.
Background technology
For the heat exchanger for having phase transformation, the effect of turbine condenser is the exhaust steam in steam turbine (ratio that will be discharged at a high speed
Hold for 15m3/ kg or so) condense into water；Adjacent heat exchange tubes (hereinafter referred to as pipe) is arranged with 60 ゜ triangles in general condenser
The patterns such as shape arrangement, 90 ゜ quadrangular arrays and circle (radiation) arrangement, it is contemplated that the size of condenser, is typically all used
60 ゜ triangular arranged, and lay out variously-shaped tube bank (multiple set of heat exchange tubes into) on this basis, 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 quantity and the 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 a manner of positive equilateral triangle (is distinguished at condenser both ends
A tube sheet is fixed, the both ends of each pipe are separately fixed in the pore of tube sheet), and form suitable bundle shape；Restrain it
Between formed be beneficial to steam flowing spreading grooves, the angle of flare of spreading grooves is 30 ゜；I.e. spreading grooves axis and vertical direction angle are 30
゜).This arrangement, the scope of spreading grooves covering is narrow, splits the spreading grooves of identical quantity (sum and row) pipe
Quantity just compares more；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
Diffusion (diffusion angle is generally the ゜ of 10 ゜~15) mismatches with spreading grooves axis arranged direction, and 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.
Utility model content
The technical problems to be solved in the utility model is to overcome the shortcomings of above-mentioned background technology, there is provided a kind of condenser stringing
The improvement of structure, the pipe laying structure should can arrange more heat exchanger tubes in the condenser of identical size, or same size
Condenser and same amount of heat exchanger tube, the resistance of steam discharge is lower, and steam discharge condensation effect is more preferable, it is ensured that condenser can be in design
Run under vacuum pressure, ensure the heat exchange efficiency of condenser.
Technical scheme provided by the utility model 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, the axis of adjacent spreading grooves are arranged in parallel between tube bank；Its feature exists
In：The axis of the spreading grooves and the vertical axis of condenser form 10~15 ゜ angle.
Each tube bank includes the pipe of multiple marshallings, adjacent pipe positive triangle arrangement, and these pipes are being restrained
It is middle to form the small spreading grooves that several are 10~15 ゜ with condenser vertical axis angle, to accelerate air-flow to turn on.
The both ends of all pipes are separately fixed on the tube sheet at condenser both ends.
The air intake of condenser is located at the top of condenser.
Operation principle of the present utility model, be to use the pipe laying structure consistent with steam angle of flare, that is, the expansion between restraining
The vertical axis (i.e. the center line of condenser air inlet) of the axis and condenser that dissipate groove forms 15 ゜ angle, as shown in Figure 1；
So cause the angle of spreading grooves axis closer to the diffusion angle (generally 10~15 ゜) of steam steam flow；It is arranged in outermost
Spreading grooves also can preferably cover the scope of air intake, enable the steam for being discharged into condensing machine more easily import spreading grooves and
Pipe gap, greatly reduce steam discharge resistance.Also, it also form some between the pipe row in each tube bank with steam steam flow to expand
Small spreading grooves similar in angle are dissipated, the gap of pipe also turns into the space that steam quickly spreads, spread equivalent to considerably increasing
Space；In other words, just can split the heat exchanger tube of same row using less spreading grooves, the size of reduction condenser cavity without
Influence steam discharge resistance；The condensation effect of condenser is set to reach more preferably state.
The beneficial effects of the utility model 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, the resistance that steam enters inside tube bank is reduced, 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 of the present utility model (condenser cross-sectional structure schematic diagram；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 utility model.
Fig. 5 is the A portions mplifying structure schematic diagram in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in further detail 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 form 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 both ends of all pipes are separately fixed on the tube sheet at condenser both 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 as positive equilateral triangle arranges (shown in Fig. 3), 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.
It is of the present utility model to the improvement is that：The axis of the spreading grooves and the vertical axis 5 of condenser form 15 ゜'s
Angle.This 15 ゜ that original structure need to integrally be turned clockwise (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 with
The angle of condenser vertical axis, be changed into 105 ゜ from 90 ゜), and each array of pipes (i.e. pipe arrange) in these pipes with it is adjacent
Array of pipes formed several be parallel to each other and be 15 ゜ with condenser vertical axis angle small spreading grooves (such as small spreading grooves axis
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 ゜, the 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 utility model, the axis of all spreading grooves all faces steam drain direction, and diffusion space is substantially reduced (diffusion
Radius is about 500mm) be equally zonal distribution pipe, structure can be with more compact.The cavity diameter of condenser can be made more
It is small, thus there is higher cooling performance and greater compactness of structure；So lower cost and better performance can be used to participate in
Competition.
After testing, the utility model can make total steam discharge resistance decline more than 20% compared with existing structure, or not increase steam discharge
Condenser lumen diameter more than 5% is reduced on the premise of resistance (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 axis (K1, K2, K3, K4) of the spreading grooves forms 10~15 ゜ angle with the vertical axis (5) 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 more
The pipe of individual marshalling, adjacent pipe positive triangle arrangement, and these pipes form several in tube bank and erected with condenser
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 both ends of all pipes
It is separately fixed on the tube sheet at condenser both 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 |
|---|---|---|---|
| CN201720912930.3U CN207095328U (en) | 2017-07-26 | 2017-07-26 | A kind of condenser pipe laying structure of low steam discharge resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720912930.3U CN207095328U (en) | 2017-07-26 | 2017-07-26 | A kind of condenser pipe laying structure of low steam discharge resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207095328U true CN207095328U (en) | 2018-03-13 |
Family
ID=61546102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720912930.3U Withdrawn - After Issue CN207095328U (en) | 2017-07-26 | 2017-07-26 | A kind of condenser pipe laying structure of low steam discharge resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207095328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289792A (en) * | 2017-07-26 | 2017-10-24 | 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 CN201720912930.3U patent/CN207095328U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289792A (en) * | 2017-07-26 | 2017-10-24 | 杭州国能汽轮工程有限公司 | A kind of condenser pipe laying structure of low steam discharge resistance |
| CN107289792B (en) * | 2017-07-26 | 2023-05-05 | 杭州国能汽轮工程有限公司 | Condenser pipe distribution structure with low exhaust resistance |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180313 Effective date of abandoning: 20230505 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180313 Effective date of abandoning: 20230505 |