CN202956000U - Two-phase premixing heat-exchange type atomizing cooling device of power station condenser - Google Patents
Two-phase premixing heat-exchange type atomizing cooling device of power station condenser Download PDFInfo
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- CN202956000U CN202956000U CN 201220519287 CN201220519287U CN202956000U CN 202956000 U CN202956000 U CN 202956000U CN 201220519287 CN201220519287 CN 201220519287 CN 201220519287 U CN201220519287 U CN 201220519287U CN 202956000 U CN202956000 U CN 202956000U
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- 238000001816 cooling Methods 0.000 title claims abstract description 34
- 239000007921 spray Substances 0.000 claims description 18
- 238000005507 spraying Methods 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000002245 particle Substances 0.000 description 7
- 239000012071 phase Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
A two-phase premixing heat-exchange type atomizing cooling device of a power station condenser comprises an A-shaped frame, an atomizing pipe bundle, an air condenser pipe bundle, a steam distribution pipe, an axial flow fan and atomizing nozzles. The two-phase premixing heat-exchange type atomizing cooling device is characterized in that the air condenser pipe bundle is arranged on the outside of two lateral sides of the A-shaped frame, the steam distribution pipe is arranged on the outside of the top of the A-shaped frame, a channel is arranged on a beam of the A-shaped frame and perpendicular to the beam, the atomizing pipe bundle is arranged perpendicular to the channel at intervals, the atomizing nozzles with downward nozzle ports are arranged on the atomizing pipe bundle, and the axial flow fan is arranged on the lower portion of a beam of the A-shaped frame. The two-phase premixing heat-exchange type atomizing cooling device has the advantages of being reasonable in structure design and capable of running for a long time without manual maintenance, optimizing heat exchange efficiency of the air condenser, improving running efficiency, adopting the high-efficiency wide angle atomizing nozzle, optimizing position arrangement, remarkably reducing backflow medium temperature of the air condenser and steam discharge back pressure of a turbine and reducing running cost.
Description
Technical field
This patent relates to the spray cooling device for the condenser of power station air cooling system, particularly a kind of spray cooling device of condenser of power station direct air cooling system air condenser, be mainly used in the continuation mist cooling of (being called for short A type island) of single row of tubes air cooling tubes condenser on ACC system A type framework.
Background technology
The ACC system, the steam discharge that refers to steam turbine is introduced in outdoor air cooling tubes condenser and directly with air, is carried out condensation.Its technical process is: turbine discharge causes in outdoor air cooling tubes condenser by bigbore discharge duct, the axial flow cooling blower that is arranged in the air cooling tubes condenser below drives air stream subcooler outer surface, steam discharge is condensed into to condensate water, and condensate water is again through the heat regenerative system of pumped back steam turbine.
The structure of direct air cooling system forms decision, and there is hidden danger in it, summer climate is xeothermic, windy, relative air humidity is lower, be unfavorable for the transmission of heat, cause the air radiator heat exchange efficiency low, steam discharge does not reach specified vacuum, and axial flow blower is discharged the hot blast phenomenons such as easily causing unit tripping that refluxes again, directly affects turbine back pressure.Under full load condition, atmospheric temperature is approximately 30 ℃ the time, and turbine back pressure is about 30kPa, and local back pressure is even up to 50kPa.High back pressure has seriously restricted the Steam Turbine operational efficiency and has improved operating cost.In practice, the 600MW unit under the rated power operation state, every reduction 1kPa back pressure, but reduce net coal consumption rate 0.8%.Therefore, reducing back pressure contributes to increase economic efficiency.
As shown in Figure 3, existing horizontal atomizer of plunderring the heat exchange type spray cooling device is usually located on A type truck transom, and spray vertically upward water droplets, and by the axial flow blower under nozzle, atomized water is sprayed in the air condenser tube bank, to improve the purpose of air condenser tube bank heat transfer rate.But between its nozzle and radiator, distance is larger, be condensed into again little water droplet and fall before not arriving radiator, therefore be difficult to guarantee the humidity requirement in framework, and wasted a large amount of water.
Summary of the invention
For addressing the above problem, the utility model provides a kind of spray cooling device of condenser of power station direct air cooling system air condenser, is mainly used in the continuation mist cooling of multilayer fork row, the tube bank of in-line arrangement air cooling tubes condenser on ACC system A type framework.The inventor furthers investigate with the heat exchange efficiency of air for multilayer fork row, the tube bank of in-line arrangement air cooling tubes condenser, designs the condenser of power station two phase flow cross-flow tube bank type spray cooling device that is exclusively used in the cooling of multilayer tube bank continuation.The utility model adopts injection spray pipe, wide-angle atomizer to approach the mode that tube bank is arranged, makes lower temperature gasifying liquid particle (liquid phase) and humid air (gaseous state phase) are not horizontal to plunder the multilayer tube bank, and assurance continuation Steady Heat Transfer reduces temperature, takes away heat.
The technical solution of the utility model is as follows: condenser of power station two-phase premix heat exchange type spray cooling device, comprise frame type A, spraying tube bank, air condenser tube bank, steam-distributing pipe, axial flow blower, atomizer, it is characterized in that: at frame type A dual-side arranged outside air condenser, restrain, in the frame type A top outer, steam-distributing pipe is set, perpendicular to crossbeam, passage is set on the frame type A crossbeam, perpendicular to channel spacing, the spraying tube bank is set, in the spraying tube bank, the downward atomizer of jet hole is set; In frame type A crossbeam bottom, axial flow blower is set.
For reaching the effect that better cools, between described atomizer and spraying tube bank, by joint coupling, connect.
Compared with prior art, the beneficial effects of the utility model are as follows: the utility model device is reasonable in design, is easy to construction, can be in the situation that long-term prosthetic is safeguarded long-play; Optimize the optimum position that injection spray pipe approaches air condenser, make gas-liquid two-phase fluid heat transfer coefficient between Multi-row pipeline become the power association, optimized the heat exchange efficiency of air condenser, improved operational efficiency; Adopt efficient wide-angle atomizer, optimize location arrangements, atomizing particle and air condenser tube bank coverage rate surpass 85%, have significantly reduced air condenser reflux medium temperature, turbine discharge back pressure, have reduced operating cost.
The accompanying drawing explanation
Fig. 1 is two-phase premix heat exchange type spray cooling device structural representation.
The plan structure schematic diagram that Fig. 2 is a cooling unit of two-phase premix heat exchange type spray cooling device.
Fig. 3 is existing spray cooling device structural representation.
Main symbol description in accompanying drawing:
1. spraying tube bank; 2. air condenser tube bank; 3. steam-distributing pipe; 4. axial flow blower; 5. atomizer; 6. spraying bye-pass.
Below will to the utility model, be described in further detail by drawings and Examples; but following example is only the utility model example wherein; do not represent the rights protection scope that the utility model limits, rights protection scope of the present utility model is as the criterion with claims.
The specific embodiment
Embodiment 1
Of the present utility model a kind of condenser of power station two-phase premix heat exchange type spray cooling device as shown in Figure 1 to Figure 2, comprise frame type A, spraying tube bank 1, air condenser tube bank 2, steam-distributing pipe 3, axial flow blower 4, atomizer 5, in frame type A dual-side arranged outside air condenser tube bank 2, in the frame type A top outer, steam-distributing pipe 3 is set, perpendicular to crossbeam, passage is set on the frame type A crossbeam, perpendicular to channel spacing, spraying tube bank 1 is set, in spraying tube bank 1, the downward atomizer of jet hole 5 is set, between atomizer 5 and spraying tube bank 1, by joint coupling, connect, in frame type A crossbeam bottom, axial flow blower 4 is set.Water pump is delivered to each spraying bye-pass 6 by water, on the spraying bye-pass, valve is set, and controls the spray water of all cooling units on this branch road 6 and supplies with, and each nozzle enters duty immediately, to the air condenser continuation mist cooling of whole ACC system.One of them cooling unit as shown in Figure 2,10 nozzles are equidistantly installed along the fan bridge both sides, and 4 nozzles occupy the both sides away from fan bridge, the basic all standing blower fan of the atomizing particle of all ejections air-inducing passage.Injection spray pipe becomes the steck mode to arrange, intermediate lateral is drawn two injection spray pipes, and far-end nozzle water source is provided.
The atomizer spraying forms jet impingement heat transfer, the inner formation confined space forced-convection heat transfer of whole fan unit and Low Temperature Wet air and the heat exchange of air condenser cross grazing single-tube with axial flow blower air inducing.
Atomizer and the reverse spraying of axial flow blower air inducing direction, jet diameter constantly enlarges, and center liquid particles momentum engenders to center that than Da，You edge, edge particle is reverse, and center starts to occur the reverse stagnation region that is called, and this place's heat transfer intensity is high especially; Heated dry air carries small liquid particles, enters the blower fan upper space, and here liquid particles absorbs a large amount of latent heats of vaporization, is transformed into the Low Temperature Wet air; The horizontal single row of tubes air condenser of plunderring of Low Temperature Wet air flows, and except having Boundary Layer Characteristics, flow separation also occurs, and produces backflow, whirlpool, whirlpool bundle, strengthens the local surfaces heat exchange efficiency.
Claims (2)
1. condenser of power station two-phase premix heat exchange type spray cooling device, comprise frame type A, spraying tube bank, air condenser tube bank, steam-distributing pipe, axial flow blower, atomizer, it is characterized in that: at frame type A dual-side arranged outside air condenser, restrain, in the frame type A top outer, steam-distributing pipe is set, perpendicular to crossbeam, passage is set on the frame type A crossbeam, perpendicular to channel spacing, the spraying tube bank is set, in the spraying tube bank, the downward atomizer of jet hole is set; In frame type A crossbeam bottom, axial flow blower is set.
2. heat sink according to claim 1 is characterized in that: between described atomizer and spraying tube bank, by joint coupling, connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519287 CN202956000U (en) | 2012-10-11 | 2012-10-11 | Two-phase premixing heat-exchange type atomizing cooling device of power station condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519287 CN202956000U (en) | 2012-10-11 | 2012-10-11 | Two-phase premixing heat-exchange type atomizing cooling device of power station condenser |
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| Publication Number | Publication Date |
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| CN202956000U true CN202956000U (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220519287 Expired - Fee Related CN202956000U (en) | 2012-10-11 | 2012-10-11 | Two-phase premixing heat-exchange type atomizing cooling device of power station condenser |
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| CN (1) | CN202956000U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091722A (en) * | 2016-07-15 | 2016-11-09 | 大唐(北京)能源管理有限公司 | A kind of plant condenser moisturizing atomization system |
-
2012
- 2012-10-11 CN CN 201220519287 patent/CN202956000U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091722A (en) * | 2016-07-15 | 2016-11-09 | 大唐(北京)能源管理有限公司 | A kind of plant condenser moisturizing atomization system |
| CN106091722B (en) * | 2016-07-15 | 2024-03-22 | 大唐环境产业集团股份有限公司 | Water supplementing and atomizing system for condenser of power plant |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENYANG ACADEMY OF INSTRUMENTATION SCIENCE CO., L Free format text: FORMER NAME: SHENYANG INSTRUMENT SCIENTIFIC ACADEMY |
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| CP01 | Change in the name or title of a patent holder |
Address after: 110043 Beihai street, Shenyang, Liaoning, No. 242 Patentee after: Shenyang Academy of Instrumentation Science Co., Ltd. Address before: 110043 Beihai street, Shenyang, Liaoning, No. 242 Patentee before: Shenyang Instrument Scientific Academy |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20151011 |
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| EXPY | Termination of patent right or utility model |