CN220959699U - Air quantity adjusting device of direct air-cooling condenser - Google Patents
Air quantity adjusting device of direct air-cooling condenser Download PDFInfo
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- CN220959699U CN220959699U CN202322412056.5U CN202322412056U CN220959699U CN 220959699 U CN220959699 U CN 220959699U CN 202322412056 U CN202322412056 U CN 202322412056U CN 220959699 U CN220959699 U CN 220959699U
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- 238000001816 cooling Methods 0.000 title claims abstract description 44
- 238000009434 installation Methods 0.000 claims abstract description 28
- 238000005192 partition Methods 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000003570 air Substances 0.000 description 92
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
The utility model relates to the technical field of direct air cooling of thermal power plants, in particular to an air quantity adjusting device of a direct air-cooling condenser, which comprises a mounting truss, wherein an axial flow fan is fixedly arranged in the middle of the top end of the mounting truss, an A-shaped frame is fixedly arranged at the top of the mounting truss, a steam distributing pipe is fixedly arranged at the top of the A-shaped frame, heat exchange tube bundles are arranged on two sides of the A-shaped frame, return pipes matched with the heat exchange tube bundles are arranged at the bottoms of the two sides of the A-shaped frame, and a middle partition plate, a first guide plate and a second guide plate are fixedly arranged at the position, at which the top of the mounting truss is positioned at an air outlet of the axial flow fan. According to the air quantity adjusting device of the direct air-cooling condenser, the middle partition plate, the first guide plate and the second guide plate are arranged at the outlet of the fan at the top of the installation truss, and the cold air can be guided to the heat exchange tube bundles at the two sides through the middle partition plate, the first guide plate and the second guide plate, so that the influence of swirling flow at the outlet of the fan is reduced, and the cooling air quantity distribution is relatively uniform.
Description
Technical Field
The utility model relates to the technical field of direct air cooling of thermal power plants, in particular to an air quantity adjusting device of a direct air cooling condenser.
Background
For a direct air-cooling turbo generator set with large and medium capacity, the air-cooling condenser is main auxiliary equipment of the direct air-cooling unit. The condenser of the direct air cooling unit consists of a plurality of air cooling units, and each air cooling unit is arranged in an equilateral triangle. The fin tube bundles are arranged on the two inclined surfaces of the equilateral triangle, and the axial flow fan is arranged on the bottom surface. When the air cooling device works, the axial flow fan sucks cooling air and makes the cooling air transversely pass through the fin tube bundles, so that exhaust steam of a steam turbine in the fin tube bundles is condensed into water, and the air after heat absorption is discharged from the upper part of the air cooling unit. The direct air cooling unit uses ambient air as a cooling medium of steam turbine exhaust, and uses an air cooling condenser to replace a traditional water cooling condenser to perform heat exchange between air and steam.
A heat exchange tube bundle with fins is placed on an A-shaped frame of the air cooling unit, and the air flow velocity at the fins is improved through the effect of an axial flow fan, so that the cooling capacity of the heat exchange tube bundle is enhanced. However, the air flow field at the outlet of the axial flow fan is in a rotational flow state, turbulent flow is mostly generated at the position from the outlet of the fan to the lower end plate of the tube bundle, the triangular area at the upper part of the tube bundle and the like, and because the heat exchange tube bundles are distributed at two sides of the A-shaped frame, the uniform passing of ambient air through the fin tubes is difficult to realize, so that the heat exchange tube bundles cannot fully exert a heat dissipation effect due to uneven distribution of the air flow field, the performance of a direct air cooling system is low, the cooling effect of the whole air cooling system is further reduced, and the output of a generator set and the power consumption of the fan are increased; in addition, when natural horizontal wind flows through the air cooling unit, the natural horizontal wind can disturb the air flow field, hot air discharged at the edge of the heat exchange tube bundle can flow to the inlet of the fan, and then is sucked back into the condenser by the fan again to form hot air reflux, the hot air reflux can reduce the heat exchange efficiency of the air cooling condenser, the back pressure of the steam turbine is increased, and the normal operation of the unit is influenced.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a direct air-cooling condenser air quantity adjusting device, which solves the problems in the background art.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a direct air cooling condenser air quantity adjusting device, includes the installation truss, the middle part fixed mounting on installation truss top has axial fan, the top fixed mounting of installation truss has A type frame, the top fixed mounting of A type frame has steam distribution pipe, both sides to be provided with heat transfer tube bank, the bottom of A type frame both sides all is provided with heat transfer tube bank complex back flow, the top of installation truss is located axial fan air outlet department fixed mounting has middle part baffle and deflector one, deflector two, fixed mounting has the wind-proof spoiler on the installation truss, the inside fixed mounting of installation truss has the guide bridge plate that is located the wind-proof spoiler below.
Preferably, the first guide plate and the second guide plate are two groups, the two groups of the first guide plate and the second guide plate are distributed on the left side and the right side of the middle partition plate in a mirror image mode, and the top ends of the middle partition plate, the first guide plate and the second guide plate are propped against the inner wall of the axial flow fan.
Preferably, the two ends of the middle partition plate, the first guide plate and the second guide plate are fixedly provided with connecting seats, and the connecting seats are fixedly connected with the installation truss through bolts.
Preferably, the wind isolating spoiler is integrally U-shaped, the bottom of the wind isolating spoiler and the air inlet of the axial flow fan are at the same height, and the bottom of the wind isolating spoiler is sleeved outside the axial flow fan.
Preferably, the width value of the wind isolating spoiler is the same as the width value of the heat exchange tube bundle before and after or is 5-10cm larger than the width value of the heat exchange tube bundle before and after, and reinforcing rib plates which are uniformly distributed are arranged in the wind isolating spoiler.
Preferably, the wind isolating spoiler and the guide bridge plate are fixedly connected with the installation truss through bolts, and the guide bridge plate is integrally in an upwards-protruding arch structure.
Preferably, the width value of the guide bridge plate is the same as the width value of the front side and the rear side of the inside of the installation truss, and the distance between the top of the guide bridge plate and the air inlet of the axial flow fan is 20-50cm.
The utility model provides a direct air-cooling condenser air quantity adjusting device, which has the following beneficial effects:
1. This direct air cooling condenser air quantity adjusting device through set up middle part baffle and be located the guide plate one, the guide plate two of middle part baffle both sides in installation truss top fan exit, can guide cold wind to the heat transfer tube bank department of both sides through middle part baffle, guide plate one, guide plate two, reduces the influence of fan export whirl, makes the cooling air distribution relatively even, realizes that the cold air evenly passes through heat transfer tube bank, improves the heat transfer ability of condenser, improves the wholeness ability of air cooling unit, reduces the consumption of fan.
2. This direct air cooling condenser air regulation device blocks the crosswind through the wind-proof spoiler that is located the installation truss both sides, reduces the turbulent flow influence of crosswind to heat exchange tube bank edge hot air, avoids hot air to get into and forms the backward flow in the axial fan, combines the guide bridge plate to guide the crosswind to axial fan air inlet through the wind-proof spoiler simultaneously, has overcome the influence of crosswind promptly, has still increased the intake of fan, can further improve the heat transfer ability of condenser to and the wholeness ability of air cooling unit.
Drawings
FIG. 1 is a schematic diagram of the overall assembled structure of the present utility model;
FIG. 2 is a schematic diagram of the overall front view of the present utility model;
FIG. 3 is a schematic view of the top of the mounting truss of the present utility model;
FIG. 4 is a schematic view of the structure of the middle partition plate and the two side guide plates of the present utility model;
FIG. 5 is a schematic view of the structure of the wind-shielding spoiler and the bridge plate according to the present utility model.
In the figure: 1. installing a truss; 2. an axial flow fan; 3. a type a frame; 4. a heat exchange tube bundle; 5. a steam distribution pipe; 6. a return pipe; 7. a middle partition plate; 8. a first deflector; 9. a second guide plate; 10. a wind-isolating spoiler; 11. reinforcing rib plates; 12. a flow guiding bridge plate; 13. and a connecting seat.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1 and 3, the present utility model provides a technical solution: the utility model provides a direct air cooling condenser air quantity adjusting device, including installation truss 1, the middle part fixed mounting on installation truss 1 top has axial fan 2, installation truss 1's top fixed mounting has A type frame 3, A type frame 3's top fixed mounting has steam distributing pipe 5, both sides are provided with heat transfer tube bank 4, steam distributing pipe 5 distributes the heat transfer tube bank 4 of both sides with high temperature steam, axial fan 2 work suction cold air is discharged along the gas outlet, make the cold air pass heat transfer tube bank 4, cool down the high temperature steam in the heat transfer tube bank 4, the bottom of A type frame 3 both sides all is provided with the back flow 6 with heat transfer tube bank 4 complex, the steam condensation water in the heat transfer tube bank 4 can carry out the backward flow along back flow 6, installation truss 1's top is located axial fan 2 air outlet department fixed mounting has middle part baffle 7 and deflector first 8, deflector second 9, can guide cold wind to the heat transfer tube bank 4 department of both sides through middle baffle 7, deflector first 8, the deflector second 9, the influence of fan export whirl is reduced, the effect of fan, the realization cold air evenly passes through heat transfer tube bank 4, improve the condenser's high temperature steam, install the back flow 6 with heat transfer tube bank 4 complex back flow 6, the steam condensation device is installed to the heat exchanger 10, the air flow deflector 10 is further has been improved to the air flow bridge 12, the air flow bridge 12 is further improved, the air flow bridge 12 is installed to the air bridge 12, the air bridge is further has been improved, the air bridge 12 has been installed to the air bridge 2, and has been further improved the air bridge flow bridge device.
Referring to fig. 2 and 4, the first baffle 8 and the second baffle 9 are two groups, the first baffle 8 and the second baffle 9 are distributed on the left side and the right side of the middle baffle 7 in a mirror image manner, cold air can be guided to the heat exchange tube bundles 4 on the two sides through the middle baffle 7, the first baffle 8 and the second baffle 9, the influence of swirling flow at the outlet of a fan is reduced, the cold air uniformly passes through the heat exchange tube bundles 4, the heat exchange capacity of the condenser is improved, the top ends of the middle baffle 7, the first baffle 8 and the second baffle 9 are all propped against the inner wall of the axial flow fan 2, the top ends of the middle baffle 7, the first baffle 8 and the second baffle 9 are limited, the cold air can smoothly pass through the heat exchange tube bundles 4 under guidance, the two ends of the middle baffle 7, the first baffle 8 and the second baffle 9 are fixedly provided with connecting seats 13, the connecting seats 13 are fixedly connected with the mounting truss 1 through bolts, the middle baffle 7, the first baffle 8 and the second baffle 9 are mounted through bolts, the stability of the operation is ensured, and the subsequent disassembly and overhaul are convenient.
Referring to fig. 2 and 5, the wind-isolating spoiler 10 is in a U shape, the bottom of the wind-isolating spoiler 10 and the air inlet of the axial flow fan 2 are at the same height, so that the transverse wind guided by the wind-isolating spoiler 10 can smoothly enter the axial flow fan 2, the air inflow of the fan is increased, the bottom of the wind-isolating spoiler 10 is sleeved outside the axial flow fan 2, the transverse wind is guided to the air inlet of the axial flow fan 2 through the wind-isolating spoiler 10 and the guide bridge 12, namely, the influence of the transverse wind is overcome, the air inflow of the fan is increased, the heat exchange capacity of the condenser is further improved, the width value of the wind-isolating spoiler 10 is the same as the front and rear width values of the heat exchange tube bundles 4 or is 5-10cm larger than the front and rear width values of the heat exchange tube bundles 4, the wind-isolating spoiler 10 can effectively block the transverse wind, the influence of the transverse wind on the hot air at the edges of the heat exchange tube bundles 4 is avoided, the inside of the wind-isolating spoiler 10 is provided with reinforcing rib plates 11 which are uniformly distributed, the structural strength of the wind-isolating spoiler 10 is improved, and the wind-isolating spoiler 10 is prevented from deforming under the effect of the wind-isolating spoiler 10.
The air isolation spoiler 10 and the guide bridge plate 12 are fixedly connected with the installation truss 1 through bolts, the stability of the air isolation spoiler 10 and the guide bridge plate 12 during operation is guaranteed, stable guide of cross wind is guaranteed, the guide bridge plate 12 is of an upwards-protruding arch structure, the cross wind is guided to the air inlet of the axial flow fan 2 through the air isolation spoiler 10 and the guide bridge plate 12, the influence of the cross wind is overcome, the air inlet quantity of the fan is increased, the heat exchange capacity of the condenser is further improved, the width value of the guide bridge plate 12 is identical to the width value of the front side and the rear side of the installation truss 1, the guide bridge plate 12 is arch-shaped, when the cross wind flows, the air inlet of the axial flow fan 2 can be guided by the cross wind direction, the distance between the top of the guide bridge plate 12 and the air inlet of the axial flow fan 2 is 20-50cm, the distance between the guide bridge plate 12 and the axial flow fan 2 is limited, smooth guide of the cross wind is guaranteed, and meanwhile the air inlet quantity is prevented from being influenced by too small distance.
In sum, when the direct air-cooled condenser air quantity adjusting device is used, the steam distributing pipe 5 distributes high-temperature steam into the heat exchange tube bundles 4 at two sides, the axial flow fan 2 works to suck cold air and discharge the cold air along the air outlet, so that the cold air passes through the heat exchange tube bundles 4, the high-temperature steam in the heat exchange tube bundles 4 is cooled, the steam in the heat exchange tube bundles 4 is condensed into water and flows back along the return pipe 6, the cold air at the air outlet of the axial flow fan 2 is discharged, the influence of swirl flow at the outlet of the axial flow fan 2 is reduced through the middle partition 7 and the guide plates I8 and II 9 at two sides, the cold air uniformly passes through the heat exchange tube bundles 4, the heat exchange capability of the condenser is improved, the influence of the cross air is blocked through the air baffle 10 at two sides of the mounting truss 1, the hot air turbulence influence on the edge of the heat exchange tube bundles 4 is avoided, the hot air at the edge of the heat exchange tube bundles 4 is prevented from flowing back to the fan 2, meanwhile, the cross air is guided to the air inlet of the fan 2 through the guide plates 12 in combination with the guide plates 12, the influence of the cross air on the air inlet of the bridge fan is increased, and the heat exchange capability of the condenser is further improved.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a direct air cooling condenser air quantity adjusting device, includes installation truss (1), the middle part fixed mounting on installation truss (1) top has axial fan (2), the top fixed mounting of installation truss (1) has A type frame (3), its characterized in that: the utility model discloses a steam distribution pipe, including installation truss (1), steam distribution pipe (5), both sides are provided with heat transfer tube bank (4), the bottom of A type frame (3) both sides all is provided with and heat transfer tube bank (4) complex back flow (6), the top of installation truss (1) is located axial fan (2) air outlet department fixed mounting and has middle part baffle (7) and guide plate one (8), guide plate two (9), fixed mounting has wind-proof spoiler (10) on installation truss (1), the inside fixed mounting of installation truss (1) has guide bridge plate (12) that are located wind-proof spoiler (10) below.
2. The air quantity adjusting device of the direct air-cooling condenser according to claim 1, wherein: the two groups of guide plates I (8) and II (9) are distributed on the left side and the right side of the middle partition plate (7) in a mirror image mode, and the top ends of the middle partition plate (7), the guide plates I (8) and II (9) are propped against the inner wall of the axial flow fan (2).
3. The air quantity adjusting device of the direct air-cooling condenser according to claim 2, wherein: the two ends of the middle partition plate (7), the first guide plate (8) and the second guide plate (9) are fixedly provided with connecting seats (13), and the connecting seats (13) are fixedly connected with the installation truss (1) through bolts.
4. The air quantity adjusting device of the direct air-cooling condenser according to claim 1, wherein: the wind isolating spoiler (10) is integrally U-shaped, the bottom of the wind isolating spoiler (10) and the air inlet of the axial flow fan (2) are positioned at the same height, and the bottom of the wind isolating spoiler (10) is sleeved outside the axial flow fan (2).
5. The air quantity adjusting device of the direct air-cooling condenser according to claim 4, wherein: the width value of the wind isolating spoiler (10) is the same as the front and back width values of the heat exchange tube bundles (4) or is 5-10cm larger than the front and back width values of the heat exchange tube bundles (4), and reinforcing rib plates (11) which are uniformly distributed are arranged in the wind isolating spoiler (10).
6. The air quantity adjusting device of the direct air-cooling condenser according to claim 5, wherein: the wind isolating spoiler (10) and the guide bridge plate (12) are fixedly connected with the installation truss (1) through bolts, and the guide bridge plate (12) is integrally of an upwards-protruding arch structure.
7. The air quantity adjusting device of the direct air-cooling condenser according to claim 6, wherein: the width value of the guide bridge plate (12) is the same as the width value of the front side and the rear side of the inside of the installation truss (1), and the distance between the top of the guide bridge plate (12) and the air inlet of the axial flow fan (2) is 20-50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322412056.5U CN220959699U (en) | 2023-09-06 | 2023-09-06 | Air quantity adjusting device of direct air-cooling condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322412056.5U CN220959699U (en) | 2023-09-06 | 2023-09-06 | Air quantity adjusting device of direct air-cooling condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220959699U true CN220959699U (en) | 2024-05-14 |
Family
ID=91005770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322412056.5U Active CN220959699U (en) | 2023-09-06 | 2023-09-06 | Air quantity adjusting device of direct air-cooling condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220959699U (en) |
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2023
- 2023-09-06 CN CN202322412056.5U patent/CN220959699U/en active Active
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