CN209857677U - Rugby-shaped condenser tube bundle - Google Patents
Rugby-shaped condenser tube bundle Download PDFInfo
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- CN209857677U CN209857677U CN201920176125.8U CN201920176125U CN209857677U CN 209857677 U CN209857677 U CN 209857677U CN 201920176125 U CN201920176125 U CN 201920176125U CN 209857677 U CN209857677 U CN 209857677U
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Abstract
The utility model relates to a rugby-shape condenser tube bundle, which comprises a main condensation area and an air cooling area, wherein the main condensation area is composed of cooling water pipe cross bars, a blank area is arranged in the main condensation area, the air cooling area is arranged in the blank area, and the main condensation area is a rugby-shape structure with two small ends and a large middle part; a steam baffle plate with an opening at the lower part is arranged at the outline of the tube bundle of the air cooling area, and the lower part of the air cooling area is communicated with the blank area; the steam baffle plate and the inner contour of the main condensation area form an uncondensed gas gathering channel; and an air extraction area is arranged between the upper tube bundle of the air cooling area and the upper part of the steam baffle plate. Compared with the prior art, the utility model discloses can make the tube bank heat load distribute, have the condensation abundant, improve the characteristics of air cooling district export air concentration.
Description
Technical Field
The utility model relates to a condenser tube bank especially relates to a rugby shape condenser tube bank, is particularly useful for axial admission formula condenser.
Background
The condenser is cold source equipment in a steam cycle unit cold end system and is used for condensing exhaust steam and providing low operation backpressure for a steam turbine. The core component of the condenser is a tube bundle formed by arranging thousands of cooling tubes, the tube bundle arrangement is a key link after the condenser completes thermal design according to the HEI standard, and the heat transfer performance of the condenser can be influenced if the tube bundle module is arranged reasonably.
Although the condenser is mostly used for large-scale thermal power generating units, the steam cycle in the gas-steam combined cycle, which is one of the clean power generation modes advocated in China, also needs the condenser as a device for condensing exhaust steam. The design of the condenser for the gas-steam combined cycle, particularly the pipe arrangement design, is different from the pipe arrangement design of the condenser for the large thermal power generating unit.
At present, the tube bank form that the power station condenser used has the multiple: a church window tube bundle, a hill tube bundle, a centripetal tube bundle, an AT tube bundle, a vertical balanced flow tube bundle, a general hat tube bundle, a radiation spike tube bundle, a double diamond tube bundle, a ribbon tube bundle, an oval tube bundle, and the like. Various tube bundle modules are independently developed in China, such as: the patent of 2001 ' power station condenser modular tube bundle structure ' (ZL2001206563.3) applied by the east turbine plant, the patent of 2006 Shanghai transport university ' flow direction side condenser dendritic tube bundle module ' (ZL200610028313.3), the patent of 2008 ' Xian collaborative power technology limited ' tower type side pumping power station condenser tube bundle ' (200820222618.2), the patent of 2009 Shanghai electrical power station equipment limited ' one condenser multi-zone tube bundle ' (ZL200910195054.7), the patent of 2010 Qinghua university ' one bionic double-connected tree-shaped tube bundle condenser ' (ZL 201010197078.9), and the patent of 2011 ' one condenser double-tube bundle ' (ZL 201120341407.2) applied by the Shanghai electrical power station equipment limited. However, most of the tube bundle modules are applied to steam condensers for steam circulation of large thermal power generating units, and are not suitable for axial steam inlet condensers of gas-steam combined circulation.
At present, most of gas-steam combined cycle units are introduced abroad in China, condensers matched with the gas-steam combined cycle units belong to introduction technologies, or a small number of units move tube bundle modules applied to condensers of large thermal power units to gas-steam combined cycle, in short, tube bundle modules which are independently researched and developed in China and are suitable for axial steam-inlet condensers have less selectivity, and therefore independent research and development are urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a football-shaped condenser tube bundle for overcoming the defects of the prior art.
The purpose of the utility model can be realized through the following technical scheme:
a rugby-shaped condenser tube bundle comprises a main condensation area and an air cooling area, wherein the main condensation area and the air cooling area are formed by cooling water tube cross rows, a blank area is arranged in the main condensation area, the air cooling area is arranged in the blank area, and the main condensation area is of a rugby-shaped structure with two small ends and a large middle part; a steam baffle plate with an opening at the lower part is arranged at the outline of the tube bundle of the air cooling area, and the lower part of the air cooling area is communicated with the blank area; the steam baffle plate and the inner contour of the main condensation area form an uncondensed gas gathering channel; and an air suction area is arranged between the top of the cooling water pipe forming area in the air cooling area and the inner wall of the top of the steam baffle.
The main condensation area is provided with a reserved space for arranging an air exhaust pipeline at a position corresponding to the top of the steam baffle plate, and the reserved space is communicated with the blank area.
The ratio of the short edge to the long edge of the rugby-ball structure is 0.4-0.6.
The tube bundle of the rugby-ball condenser is of a bilateral symmetry structure.
A scattered steam guide channel is arranged at the outer edge of the main condensation area, and the width of the steam guide channel is 1-2 times of the distance between the cooling water pipes; along the axial direction of steam guide channel, the degree of depth of steam guide channel is 0.3 ~ 0.5 times of the main district tube bank thickness of condensing.
The number of the cooling water pipes in the air cooling area is 6-10% of the total number of the cooling water pipes of the rugby-shaped condenser tube bundle.
Follow the long limit direction in district is congealed to the owner, the main district is inside to be equipped with two gas collection passageways that do not congeal, two gas collection passageways that do not congeal respectively with the both sides intercommunication in blank area.
Along the direction of the short edge of the main condensation area, the width of the non-condensed gas collecting channel is 1-2 times of the distance between the cooling water pipes; along the long edge direction of the main condensation area, the depth of the non-condensed gas collecting channel is 0.3-0.5 times of the thickness of the tube bundle of the main condensation area.
The air cooling area is of a stepped structure with a narrow upper part and a wide lower part and comprises a plurality of stepped layers;
from bottom to top, the number of the tube rows of the first step layer is n, and the number of the tube rows of the a-th step layer is n-n + a;
the plurality of step layers comprise pipe rows with the pipe columns of m and m +1 which are adjacently arranged;
from bottom to top, the number of tube rows corresponding to the tube row positioned at the tail part in the plurality of step layers is m; in addition, in the adjacent step layers, the number of tube arrays corresponding to the first-layer tube array of the upper step layer is less than that of the tube arrays corresponding to the tail-part tube array of the lower step layer by 1.
The method specifically comprises the following steps: from bottom to top, the number of the tube rows of the first step layer is n, the number of the tube rows of the second step layer is n-n +2, and the number of the tube rows of the third layer is n-n + 3;
for the number of tube rows, the number of tube rows of the first step layer is m1 and m1+1, the number of tube rows is counted from bottom to top, and the number of tube rows corresponding to the tube row positioned at the tail part of the first step layer is m 1; the first-layer tube row of the second stepped layer is adjacent to the tail tube row of the first stepped layer, the number of tube rows corresponding to the first-layer tube row is m1-1, and then the number of tube rows is m1, m1-1, m1, m1-1 … …, m1 and m1-1 in sequence; similarly, the first-layer tube row of the third step layer is adjacent to the tail tube row of the second step layer, the number of tube columns corresponding to the first-layer tube row of the third step layer is m1-2, and then the number of tube columns is m1-1, m1-2, … …, m1-2, m1-1, m1-2, and so on.
On the whole, if be equipped with three ladder layers, the setting condition of total pipe column number is: … … m1, m1+1, m1 … … m1, m1+1, m 1; m1-1, m1, m1-1, m1, m1-1 … …, m1 and m 1-1; m1-2, m1-1, m1-2, … …, m1-2, m1-1 and m 1-2.
The step layer in air cooling district is equipped with 3 ~ 5, and the bank of tubes number on first step layer is 7 ~ 9.
The utility model also provides an application method of rugby shape condenser tube bank, with a plurality of rugby shape condenser tube bank is installed in the axial steam inlet formula condenser.
Compared with the prior art, the utility model has the advantages of it is following:
(1) the outer contour of the main condensation area is like a football shape, the upper edge and the lower edge of the outer contour of the main condensation area have larger curvature radius, and when steam enters in the axial direction (namely, steam enters in the horizontal direction), the steam conveniently flows around to the outer edge of the main condensation area from the upstream, so that the steam can uniformly enter the main condensation area from the outer edge of the main condensation area to be condensed, and the heat load of the main condensation area is uniformly distributed.
(2) The scattering-shaped steam guide channel arranged from outside to inside in the main condensation area can enable steam to flow from outside to inside to the deep part of the main condensation area, the steam in the main condensation area flows smoothly, the steam resistance is small, and the supercooling degree of condensed water is small.
(3) The district inner edge is equipped with two noncondensable gas collecting channel from inside to outside in "football" long limit direction to main congealing, and this noncondensable gas collecting channel can: (a) the depth of the tube bundle of the main condensation area in the long side direction of the football is not too large; (b) the collected non-condensed gas is converged to the non-condensed gas collecting channel, which is favorable for smooth flow of vapor in the main condensing area, small vapor resistance and small supercooling degree of condensed water.
(4) The air cooling area is of a stepped structure with a narrow upper part and a wide lower part, the inlet flow area is relatively large, and the inlet resistance is small. The air cooling district through-flow area is contract gradually absolutely afterwards, and under the condition that the noncondensable gas is condensed, volume flow constantly reduces, it is unlikely too low to have guaranteed that the noncondensable gas velocity of flow of air cooling district is unlikely to, has also guaranteed simultaneously that the air cooling district has higher heat transfer coefficient, and noncondensable gas condenses the effect obviously, and air cooling district export air concentration is high.
Drawings
Fig. 1 is a schematic structural view of an axial steam inlet condenser in embodiment 1;
FIG. 2 is a partially enlarged view of FIG. 1;
FIG. 3 is a schematic view of a football shaped condenser tube bundle;
FIG. 4 is a schematic view of the distribution of cooling water tubes in a football shaped condenser tube bundle;
fig. 5 is a schematic structural view of an axial steam inlet condenser in embodiment 2;
in the figure, 1 is a condenser shell, 2 is an upper main steam channel, 3 is a middle main steam channel, 4 is a lower main steam channel, 5 is a main condensing area, 6 is a steam guide channel, 7 is a reserved space, 8 is a steam baffle, 9 is an air cooling area, 10 is an uncondensed gas collecting channel, 11 is an air extracting area, 12 is an uncondensed gas collecting channel, and s is a pipe spacing.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
The utility model provides a rugby shape condenser tube bank, includes the main district 5 and the air cooling district 9 that constitute by the cooling water pipe fork, and the number of the 9 condenser water pipes in air cooling district is 6 ~ 10% of the total cooling water pipe number of rugby shape condenser tube bank.
A blank area is arranged in the main condensation area 5, the air cooling area 9 is arranged in the blank area, and the main condensation area 5 is of a football-shaped structure with two small ends and a large middle; the tube bundle of the rugby-ball condenser is of a bilateral symmetry structure, and the ratio of the short edge to the long edge of the rugby-ball structure is 0.4-0.6; the outer edge of the primary condensation area 5 is provided with steam guide channels 6 distributed in a scattering manner, and the width of each steam guide channel 6 is 1-2 times of the pipe spacing s of the cooling water pipe; along the axial direction of the steam guide channel 6, the depth of the steam guide channel 6 is 0.3-0.5 times of the thickness of the tube bundle in the primary condensation zone 5; two non-condensable gas collecting channels 12 are arranged inside the main condensing area 5 along the long edge direction of the main condensing area 5, and the two non-condensable gas collecting channels 12 are respectively communicated with the two sides of the blank area; the width of the non-condensed gas collecting channel 12 is 1-2 times of the pipe spacing s of the cooling water pipe along the short edge direction of the primary condensing area 5; along the long side direction of the main condensation area 5, the depth of the non-condensed gas collecting channel 12 is 0.3-0.5 times of the tube bundle thickness of the main condensation area 5, the shape of the inner area surrounded by the main condensation area 5 in the embodiment is like a top, and the non-condensed gas collecting channel 12 is like a balance surface of the top.
A steam baffle plate 8 with an opening at the lower part is arranged at the pipe bundle outline of the air cooling area 9, and the lower part of the air cooling area 9 is communicated with the blank area; the steam baffle plate 8 and the inner contour of the main condensation area 5 form an uncondensed gas collecting channel 10; the air cooling zone 9 is of a stepped structure with a narrow upper part and a wide lower part, and comprises a plurality of stepped layers, more vividly, the tube bundle profile of the cooling water pipe in the air cooling zone 9 is in a shape of a birthday cake, the arrangement of the cooling water pipe is carried out according to the actual number of the cooling water pipe in the air cooling zone and the actual size of an internal area enclosed by the main condensation zone 5, and the birthday cake-shaped air cooling zone 9 can be divided into a plurality of layers; the air cooling area is of a step-shaped structure with a narrow top and a wide bottom and comprises a plurality of step layers; from bottom to top, the number of the tube rows of the first step layer is n, and the number of the tube rows of the a-th step layer is n-n + a; the plurality of step layers comprise pipe rows with the number of the pipe columns arranged adjacently and respectively being m and m + 1; from bottom to top, the number of tube rows corresponding to the tube row positioned at the tail part in the plurality of step layers is m; in addition, in the adjacent step layers, the number of tube arrays corresponding to the first-layer tube array of the upper step layer is less than that of the tube arrays corresponding to the tail-part tube array of the lower step layer by 1. The method specifically comprises the following steps: from bottom to top, the number of the tube rows of the first step layer is n, the number of the tube rows of the second step layer is n-n +2, and the number of the tube rows of the third layer is n-n + 3; for the number of tube rows, the number of tube rows of the first step layer is m1 and m1+1, the number of tube rows is counted from bottom to top, and the number of tube rows corresponding to the tube row positioned at the tail part of the first step layer is m 1; the first-layer tube row of the second stepped layer is adjacent to the tail tube row of the first stepped layer, the number of tube rows corresponding to the first-layer tube row is m1-1, and then the number of tube rows is m1, m1-1, m1, m1-1 … …, m1 and m1-1 in sequence; similarly, the first-layer tube row of the third step layer is adjacent to the tail tube row of the second step layer, the number of tube columns corresponding to the first-layer tube row of the third step layer is m1-2, and then the number of tube columns is m1-1, m1-2, … …, m1-2, m1-1, m1-2, and so on. On the whole, if be equipped with three ladder layers, the setting condition of total pipe column number is: … … m1, m1+1, m1 … … m1, m1+1, m 1; m1-1, m1, m1-1, m1, m1-1 … …, m1 and m 1-1; m1-2, m1-1, m1-2, … …, m1-2, m1-1 and m 1-2. If more stepped layers are needed to be arranged, the corresponding tube column number and tube row number can be set by analogy. Preferably, the number of the step layers of the air cooling area 9 is 3-5, and the number of the tube rows of the first step layer is 7-9.
An air extraction area 11 is arranged between the top of a cooling water pipe forming area in the air cooling area 9 and the inner wall of the top of the steam baffle plate 8, and the air cooling area 9 and the air extraction area 11 are separated from the main condensation area 5 through the steam baffle plate 8. And the main condensing area 5 is provided with a reserved space 7 for arranging an air exhaust pipeline at a corresponding position on the top of the steam baffle plate 8, the reserved space 7 is communicated with the blank area, and an air exhaust opening can be arranged on the tube plate to exhaust non-condensable gas from the air exhaust area 11.
The tube bundles of the rugby-shaped condenser are applied to an axial steam inlet type condenser, a plurality of the tube bundles of the rugby-shaped condenser are installed in a condenser shell 1 of the axial steam inlet type condenser, and the tube bundles of the rugby-shaped condenser are vertically arranged in an aligned mode; only one football-shaped condenser tube bundle can be arranged; during the use, steam gets into from the long limit direction along this football shape condenser tube bank.
In the embodiment, the outer contour of the main condensation area is designed into a structure shaped like a football, the upper edge and the lower edge of the outer contour of the main condensation area have larger curvature radius, and when steam enters in the axial direction (namely, steam enters in the horizontal direction), the steam is convenient to flow around from the upstream to all parts of the outer edge of the main condensation area, so that the steam can uniformly enter the main condensation area from all parts of the outer edge of the main condensation area for condensation, and the heat load of the main condensation area is uniformly distributed; the scattered steam guide channel arranged from outside to inside in the main condensation area can enable steam to flow from outside to inside to the deep part of the main condensation area, the steam in the main condensation area flows smoothly, the steam resistance is small, and the supercooling degree of condensed water is small; the district inner edge is equipped with two noncondensable gas collecting channel from inside to outside in "football" long limit direction to main congealing, and this noncondensable gas collecting channel can: firstly, the depth of the tube bundle of the main condensation area in the long side direction of the football is not too large; and secondly, the uncondensed gas is collected and converged to the uncondensed gas collecting channel, so that the smooth flow of the steam in the main condensing area is facilitated, the steam resistance is small, and the supercooling degree of condensed water is small. The air cooling area is in a shape of a birthday cake, the inlet flow area is relatively large, and the inlet resistance is small. The air cooling district through-flow area is contract gradually absolutely afterwards, and under the condition that the noncondensable gas is condensed, volume flow constantly reduces, it is unlikely too low to have guaranteed that the noncondensable gas velocity of flow of air cooling district is unlikely to, has also guaranteed simultaneously that the air cooling district has higher heat transfer coefficient, and noncondensable gas condenses the effect obviously, and air cooling district export air concentration is high.
Example 1
The utility model provides a football-shaped condenser tube bank, this football-shaped condenser tube bank can be applied to in the axial admission formula condenser, as shown in fig. 1, be equipped with two football-shaped condenser tube banks that are alignment about being in this axial admission formula condenser's condenser casing 1, steam gets into along the long edge direction of this football-shaped condenser tube bank, the last edge of the football-shaped condenser tube bank that is located upper portion and the last wall of condenser casing 1 form upper portion main steam passageway 2, form middle main steam passageway 3 between two football-shaped condenser tube banks, the following edge of the following football-shaped condenser tube bank and the lower half space lower part main steam passageway 4 of condenser casing. The width of the main steam channel is set to be suitable for the flow velocity of steam at the position of 70-90 m/s, and the unreasonable width of the steam flow field of the overlarge or overlarge main steam channel causes the reduction of heat exchange or the increase of steam resistance.
The tube bundle of the rugby-ball type condenser in this embodiment can be divided into a main condensation area 5, an uncondensed gas collecting channel 10, an air cooling area 9 and an air pumping area 11, as shown in fig. 2, wherein the tube bundle of the main condensation area 5 is in a rugby-ball type structure, the uncondensed gas collecting channel 10 is used for the passage of condensed gas, the air cooling area 9 is a cooling area of the uncondensed gas in the tube bundle, and the tube plate is provided with an air pumping port communicated with the air pumping area 11. The steam is mostly condensed in the main condensing area 5, the residual steam-gas mixture is collected by the non-condensed gas collecting channel 10, the cooling and condensing are continued in the air cooling area 9, and finally the residual non-condensed gas is pumped out by a vacuum pump through the pumping area 11.
The tube bundle of the rugby-ball type condenser in the embodiment is of a bilateral symmetry structure, as shown in fig. 3, the tube bundle of the rugby-ball type condenser comprises a main condensation area 5 and an air cooling area 9, wherein the main condensation area and the air cooling area are formed by cross-arranged cooling water tubes, the number of the cooling water tubes in the air cooling area 9 is 8% of the total number of the cooling water tubes of the rugby-ball type condenser tube bundle, namely the heat exchange area of the cake-shaped air cooling area is 8% of the total heat exchange area of the condenser. The main condensation area 5 is a rugby-shaped structure with two small ends and a large middle part, and the ratio of the short side to the long side of the rugby-shaped structure is 0.444; a blank area is arranged inside the primary condensation area 5, and air cooling is arranged inside the blank area; a steam baffle plate 8 with an opening at the lower part is arranged at the pipe bundle outline of the air cooling area 9, and the lower part of the air cooling area 9 is communicated with the blank area; a non-condensed gas collecting channel 10 is formed by the steam baffle 8 and the inner contour of the main condensing area 5, and a gas extraction area 11 is arranged between the upper tube bundle of the air cooling area 9 and the upper part of the steam baffle 8; the air cooling zone 9 and the suction zone 11 are separated from the main condensation zone 5 by a steam baffle 8. The upper part of the main condensation area 5 is provided with a reserved space 7 for arranging an air exhaust pipeline, and the reserved space 7 is communicated with the blank area.
The outer edge of the primary condensation area 5 is provided with a steam guide channel 6 which is distributed in a scattering shape, and the width of the steam guide channel 6 is 1 time of the pipe spacing s of the cooling water pipe; along the axial direction of the steam guiding channel 6, the depth of the steam guiding channel 6 is 0.3 times the tube bundle thickness of the primary condensing zone 5.
Along the long edge direction of mainly congealing district 5, mainly congeal the district 5 inside and be equipped with two noncondensable gas collecting channel 12, two noncondensable gas collecting channel 12 respectively with the both sides intercommunication of blank area. The inside of the main condensation area 5 encloses a 'gyro' -shaped structure, and the uncoagulated gas collecting channel 12 is just like the balance surface of a 'gyro'; the width of the non-condensed gas collecting channel 12 is 1 time of the pipe spacing s of the cooling water pipe along the short side direction of the primary condensing area 5; along the long side direction of the primary condensation zone 5, the depth of the uncondensed gas collecting channel 12 is 0.3 times of the tube bundle thickness of the primary condensation zone 5.
The air cooling zone 9 is of a stepped structure with a narrow top and a wide bottom, namely a cake-shaped structure, the arrangement condition of tube bundles in the air cooling zone 9 is reasonably arranged according to the actual number of cooling tubes in the air cooling zone and the actual size of an internal area enclosed by the main condensation zone 5, the cake-shaped air cooling zone is divided into three layers in the embodiment, the number of the tube rows of the first layer counted from bottom to top is 7, and the number of the tube rows of the adjacent tube rows in the first stepped layer is respectively 6 and 7; the number of the tube rows of the second stepped layer is 9, the number of the tube rows of the adjacent tube rows is respectively 5 and 6, and the number of the tube rows corresponding to the tube layers at the tail part is 5 from bottom to top; the bank of tubes number on the third ladder layer is equipped with 8 rows, and the bank of tubes number of adjacent bank of tubes is 4 and 5 respectively to from up down, the bank of tubes number that is located the corresponding of afterbody layer of tube is 4.
The main condensation area 5 and the air cooling area 9 are formed by cooling water pipes which are arranged in a regular triangle and have the same pipe spacing s, the included angle of the connecting lines of the centers of the adjacent cooling water pipes is 60 degrees, and s represents the pipe spacing, as shown in fig. 4.
The football-shaped condenser tube bank in this embodiment comparatively is applicable to the axial steam inlet formula condenser, has that tube bank heat load distributes evenly, the condensation is abundant, the high characteristics of air cooling district export air concentration.
Example 2
The structure of the football-shaped condenser tube bundle in the embodiment is the same as that in the embodiment 1, the football-shaped condenser tube bundle is applied to the axial steam inlet condenser, one football-shaped condenser tube bundle is arranged in the condenser shell 1 of the axial steam inlet condenser, and steam enters along the long side direction of the football-shaped condenser tube bundle as shown in fig. 5.
Example 3
A rugby-shaped condenser tube bundle is of a bilateral symmetry structure and comprises a main condensation area 5 and an air cooling area 9 which are formed by cooling water pipe cross-bars, wherein the number of cooling water pipes in the air cooling area 9 is 6% of the total number of the cooling water pipes of the rugby-shaped condenser tube bundle, as shown in figure 3. The main condensation area 5 is a rugby-shaped structure with two small ends and a large middle part, and the ratio of the short side to the long side of the rugby-shaped structure is 0.4; a blank area is arranged inside the primary condensation area 5, and air cooling is arranged inside the blank area; a steam baffle plate 8 with an opening at the lower part is arranged at the pipe bundle outline of the air cooling area 9, and the lower part of the air cooling area 9 is communicated with the blank area; a non-condensed gas collecting channel 10 is formed by the steam baffle 8 and the inner contour of the main condensing area 5, and a gas extraction area 11 is arranged between the upper tube bundle of the air cooling area 9 and the upper part of the steam baffle 8; the air cooling zone 9 and the suction zone 11 are separated from the main condensation zone 5 by a steam baffle 8. The upper part of the main condensation area 5 is provided with a reserved space 7 for arranging an air exhaust pipeline, and the reserved space 7 is communicated with the blank area.
The outer edge of the primary condensation area 5 is provided with a steam guide channel 6 which is distributed in a scattering shape, and the width of the steam guide channel 6 is 2 times of the pipe spacing s of the cooling water pipe; along the axial direction of the steam guiding channel 6, the depth of the steam guiding channel 6 is 0.5 times the tube bundle thickness of the primary condensing zone 5.
Along the long edge direction of mainly congealing district 5, mainly congeal the district 5 inside and be equipped with two noncondensable gas collecting channel 12, two noncondensable gas collecting channel 12 respectively with the both sides intercommunication of blank area. The inside of the main condensation area 5 encloses a 'gyro' -shaped structure, and the uncoagulated gas collecting channel 12 is just like the balance surface of a 'gyro'; the width of the non-condensed gas collecting channel 12 is 2 times of the pipe spacing s of the cooling water pipe along the short side direction of the primary condensing area 5; along the long side direction of the primary condensation zone 5, the depth of the uncondensed gas collecting channel 12 is 0.5 times the tube bundle thickness of the primary condensation zone 5.
The air cooling zone 9 is of a stepped structure with a narrow top and a wide bottom, namely a cake-shaped structure, the arrangement condition of tube bundles in the air cooling zone 9 is reasonably arranged according to the actual number of cooling tubes in the air cooling zone and the actual size of an inner area surrounded by the main condensation zone 5, the cake-shaped air cooling zone is divided into five layers in the embodiment, the number of tube rows of a first stepped layer counted from bottom to top is 9, and the number of tube rows of adjacent tube rows in the first stepped layer is respectively 6 and 7; the number of the tube rows of the second stepped layer is 9, the number of the tube rows of the adjacent tube rows is respectively 5 and 6, and the number of the tube rows corresponding to the tube layers at the tail part is 5 from bottom to top; the number of the tube rows of the third stepped layer is 11, the number of the tube rows of the adjacent tube rows is 4 and 5 respectively, and the number of the tube rows corresponding to the tube layers at the tail part is 4 from bottom to top; the number of tube rows of the fourth stepped layer is 12, the number of tube rows of adjacent tube rows is 3 and 4 respectively, and from bottom to top, the number of tube rows corresponding to the tube layer at the tail part is 3; the number of tube rows of the fifth step layer is 13, and the number of tube rows of the adjacent tubes is 3 and 2 respectively.
The main condensation area 5 and the air cooling area 9 are formed by arranging cooling water pipes which are arranged in a regular triangle and have the same pipe spacing s, the included angle of the connecting lines of the centers of the adjacent cooling water pipes is 60 degrees, and s represents the pipe spacing, as shown in fig. 4.
Example 4
A rugby-shaped condenser tube bundle is of a bilateral symmetry structure and comprises a main condensation area 5 and an air cooling area 9 which are formed by cooling water pipe cross-bars, wherein the number of cooling water pipes in the air cooling area 9 is 10% of the total number of the cooling water pipes of the rugby-shaped condenser tube bundle, as shown in figure 3. The main condensation area 5 is a rugby-shaped structure with two small ends and a large middle part, and the ratio of the short edge to the long edge of the rugby-shaped structure is 0.6; a blank area is arranged inside the primary condensation area 5, and air cooling is arranged inside the blank area; a steam baffle plate 8 with an opening at the lower part is arranged at the pipe bundle outline of the air cooling area 9, and the lower part of the air cooling area 9 is communicated with the blank area; a non-condensed gas collecting channel 10 is formed by the steam baffle 8 and the inner contour of the main condensing area 5, and a gas extraction area 11 is arranged between the upper tube bundle of the air cooling area 9 and the upper part of the steam baffle 8; the air cooling zone 9 and the suction zone 11 are separated from the main condensation zone 5 by a steam baffle 8. The upper part of the main condensation area 5 is provided with a reserved space 7 for arranging an air exhaust pipeline, and the reserved space 7 is communicated with the blank area.
The outer edge of the primary condensation area 5 is provided with a steam guide channel 6 which is distributed in a scattering shape, and the width of the steam guide channel 6 is 1.5 times of the pipe spacing s of the cooling water pipe; along the axial direction of the steam guiding channel 6, the depth of the steam guiding channel 6 is 0.4 times the tube bundle thickness of the primary condensing zone 5.
Along the long edge direction of mainly congealing district 5, mainly congeal the district 5 inside and be equipped with two noncondensable gas collecting channel 12, two noncondensable gas collecting channel 12 respectively with the both sides intercommunication of blank area. The inside of the main condensation area 5 encloses a 'gyro' -shaped structure, and the uncoagulated gas collecting channel 12 is just like the balance surface of a 'gyro'; the width of the non-condensed gas collecting channel 12 is 1.5 times of the pipe spacing s of the cooling water pipe along the short side direction of the primary condensing area 5; along the long side direction of the primary condensation zone 5, the depth of the uncondensed gas collecting channel 12 is 0.4 times of the tube bundle thickness of the primary condensation zone 5.
The air cooling zone 9 is of a stepped structure with a narrow top and a wide bottom, namely a cake-shaped structure, the arrangement condition of tube bundles in the air cooling zone 9 is reasonably arranged according to the actual number of cooling tubes in the air cooling zone and the actual size of an internal area enclosed by the main condensation zone 5, the cake-shaped air cooling zone is divided into three layers in the embodiment, the number of the tube rows of the first layer counted from bottom to top is 7, and the number of the tube rows of the adjacent tube rows in the first stepped layer is respectively 6 and 7; the number of the tube rows of the second stepped layer is 7, the number of the tube rows of the adjacent tube rows is respectively 5 and 6, and the number of the tube rows corresponding to the tube layers at the tail part is 5 from bottom to top; the bank of tubes number on the third ladder layer is equipped with 7 rows, and the bank of tubes number of adjacent bank of tubes is 4 and 5 respectively to from up down, the bank of tubes number that is located the corresponding of afterbody layer of tube is 4.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (9)
1. A rugby-shaped condenser tube bundle comprises a main condensation area (5) and an air cooling area (9) which are formed by cooling water tube cross-bars, wherein a blank area is arranged in the main condensation area (5), the air cooling area (9) is arranged in the blank area, and the rugby-shaped condenser tube bundle is characterized in that,
the main condensation area (5) is of a football-shaped structure with two small ends and a large middle part;
a steam baffle plate (8) with an opening at the lower part is arranged at the outline of the tube bundle of the air cooling area (9), and the lower part of the air cooling area (9) is communicated with the blank area; the steam baffle plate (8) and the inner contour of the main condensation area (5) form an uncondensed gas collecting channel (10);
and an air extraction area (11) is arranged between the top of the cooling water pipe forming area in the air cooling area (9) and the inner wall of the top of the steam baffle plate (8).
2. The football-shaped condenser tube bundle as claimed in claim 1, wherein the main condensation area (5) is provided with a reserved space (7) for arranging an air exhaust pipeline at a position corresponding to the top of the steam baffle (8), and the reserved space (7) is communicated with the blank space.
3. The football-shaped condenser tube bundle as claimed in claim 1, wherein the football-shaped condenser tube bundle is of a bilateral symmetry structure, and the ratio of the short side to the long side of the football-shaped structure is 0.4-0.6.
4. The rugby-shaped condenser tube bundle according to claim 1, characterized in that the outer edge of the primary condensing area (5) is provided with steam guide channels (6) distributed in a scattering manner, and the width of the steam guide channels (6) is 1-2 times of the distance between the cooling water tubes; along the axial direction of steam guide channel (6), the degree of depth of steam guide channel (6) is 0.3 ~ 0.5 times of the thickness of primary condensing zone (5) tube bank.
5. The football shaped condenser tube bundle as claimed in claim 1, characterized in that the number of the cooling water pipes of the air cooling zone (9) is 6-10% of the total number of the cooling water pipes of the football shaped condenser tube bundle.
6. The rugby-shaped condenser tube bundle according to claim 1, characterized in that two non-condensed gas collecting channels (12) are arranged inside the primary condensing zone (5) along the long side direction of the primary condensing zone (5), and the two non-condensed gas collecting channels (12) are respectively communicated with two sides of the blank zone.
7. The rugby-shaped condenser tube bundle according to claim 6, characterized in that the width of the non-condensed gas collecting channel (12) is 1-2 times of the cooling water tube pitch along the short side direction of the primary condensing zone (5); along the long side direction of the main condensation area (5), the depth of the non-condensed gas collecting channel (12) is 0.3-0.5 times of the tube bundle thickness of the main condensation area (5).
8. The football shaped condenser tube bundle as claimed in claim 1, characterized in that the air cooling zone (9) is a stepped structure with a narrow top and a wide bottom, and comprises a plurality of stepped layers;
from bottom to top, the number of the tube rows of the first step layer is n, and the number of the tube rows of the a-th step layer is n-n + a;
the plurality of step layers comprise pipe rows with the pipe columns of m and m +1 which are adjacently arranged;
from bottom to top, the number of tube rows corresponding to the tube row positioned at the tail part in the plurality of step layers is m; in addition, in the adjacent step layers, the number of tube arrays corresponding to the first-layer tube array of the upper step layer is less than that of the tube arrays corresponding to the tail-part tube array of the lower step layer by 1.
9. The rugby-shaped condenser tube bundle of claim 8, wherein 3-5 stepped layers are provided in the air cooling zone (9), and the number of tube rows in the first stepped layer is 7-9.
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| CN201920176125.8U CN209857677U (en) | 2019-01-31 | 2019-01-31 | Rugby-shaped condenser tube bundle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682224A (en) * | 2019-01-31 | 2019-04-26 | 上海电力学院 | A kind of rugby shape bank of condenser pipes and its application |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682224A (en) * | 2019-01-31 | 2019-04-26 | 上海电力学院 | A kind of rugby shape bank of condenser pipes and its application |
| CN109682224B (en) * | 2019-01-31 | 2023-09-26 | 上海电力学院 | Rugby-shaped condenser tube bundle and application thereof |
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