CN208847001U - A kind of air cooling unit steam exhaust device drop back pressure energy conserving system - Google Patents
A kind of air cooling unit steam exhaust device drop back pressure energy conserving system Download PDFInfo
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- CN208847001U CN208847001U CN201821375252.2U CN201821375252U CN208847001U CN 208847001 U CN208847001 U CN 208847001U CN 201821375252 U CN201821375252 U CN 201821375252U CN 208847001 U CN208847001 U CN 208847001U
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- steam exhaust
- exhaust device
- water
- air cooling
- cooling unit
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- 238000001816 cooling Methods 0.000 title claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000003643 water by type Substances 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 17
- 230000003020 moisturizing effect Effects 0.000 claims description 3
- 239000005431 greenhouse gas Substances 0.000 abstract description 3
- 241000196324 Embryophyta Species 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010009866 Cold sweat Diseases 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a kind of air cooling unit steam exhaust devices to drop back pressure energy conserving system, including steam exhaust device, the steam exhaust device bottom connects the cooling delivery pump of condensed water by pipeline, the cooling delivery pump of the condensed water connects condensate system, the steam exhaust device enclosure interior is equipped with several layers sparge pipe, the downward triangular nozzle of several spray heads is evenly equipped on the sparge pipe, the bottom that steam exhaust device is arranged in the hot well device is connected to steam exhaust device, several condensed waters cool down delivery pump and connect rear one end and connect with hot well device, the other end and several surface exchangers and the water inlet after connecing is connect, the water outlet of surface exchanger is connect with the water inlet of the sparge pipe.Back pressure energy conserving system drops in the air cooling unit steam exhaust device of the utility model, using steam turbine exhaust heat, reduces cold source energy, improves air cooling unit operating thermal efficiency, reduce the discharge of greenhouse gases.
Description
Technical field
The utility model relates to power industry machinery fields, and in particular to a kind of air cooling unit steam exhaust device drop back pressure section
It can system.
Background technique
Due to natural environment water shortage, at present in Shanxi, Hebei, the Inner Mongol, Shaanxi, the Northeast from 2001 Nian Qijian
Equipped with many Direct Air-cooled Units, these Direct Air-cooled Unit capacity are from 135MW, 200MW, 300MW, 600MW.Only Shanxi Province
It has been greater than 50% using fired power generating unit share shared by Direct Air-Cooled mode unit.By the application of Direct Air-Cooling Technology, effectively solve
Certainly consumption of the unit to water resource, but Direct Air-cooled Unit that there is also station service power consumption rates is high, unit back pressuce is high, performance driving economy compared with
The problems such as clammy difference, since environment temperature is higher, are caused in the air-cooled operation back pressure of unit for annual 5 ~ October
It rises, unit performance driving economy decline, unit is forced to limit power output problem, it has also become the energy-saving very important link of unit.
Summary of the invention
For above situation, the purpose of the utility model is to provide a kind of air cooling unit steam exhaust devices to drop back pressure energy conservation system
System reduces cold source energy using steam turbine exhaust heat, improves air cooling unit operating thermal efficiency, reduces the discharge of greenhouse gases.
Back pressure energy conserving system, including steam exhaust device, the steam discharge drop in a kind of air cooling unit steam exhaust device of the utility model
Bottom of device connects the cooling delivery pump of condensed water by pipeline, and the cooling delivery pump of the condensed water connects condensate system, this is
System further includes several surface exchangers, hot well device, the cooling delivery pump of several condensed waters, and the steam exhaust device enclosure interior is set
There is several layers sparge pipe, the downward triangular nozzle of several spray heads, the hot well device setting are evenly equipped on the sparge pipe
It is connected in the bottom of steam exhaust device with steam exhaust device, several condensed waters cooling delivery pumps simultaneously connect rear one end and hot well device
Connection, the other end and several surface exchangers and the water inlet after connecing are connect, the water outlet of surface exchanger and the sparge pipe
Water inlet connection.
Preferably, the sparge pipe is equipped with five layers, will be sufficiently mixed after condensation water atomization with steam exhaust.
Preferably, control valve is respectively set in the two sides of the surface exchanger, and the condensed water cools down the two of delivery pump
Side is provided with non-return valve and control valve, facilitates adjusting, prevents aqueous reflux.
Preferably, there are six the surface exchanger is set, respectively meet the cooling surface-type of cooling 200t/h condensed water
2, heat exchanger, the surface-type heat exchanger 1 for meeting heating 30t/h domestic hot-water, the surface for meeting heating 100t/h chemistry water
1, formula heat exchanger, the surface-type heat exchanger 1 for meeting heating 100t/h plant area heating network are mended at the beginning of meeting the heating big heat supply network of 50t/h
1, water surface formula heat exchanger.
The air cooling unit steam exhaust device emperature-lowering energy-saving system of the utility model, 35 ~ 60 DEG C of condensates in hot well device are logical
Cross the cooling delivery pump pressurization of condensed water and enter surface-type heat exchanger and exchange heat, after surface-type exchanges heat condensed water temperature drop to 15 ~
25 DEG C, condensed water after cooling enters the intracorporal every layer of sparge pipe of steam exhaust device shell, comes into full contact with after nozzle atomization with steam exhaust,
Mixed heat transfer is carried out in steam exhaust device, steam exhaust in the steam exhaust device of part is condensed rapidly, reduces the steam exhaust for entering air cooling tubes condenser
Amount, reduces the thermic load of air cooling tubes condenser, so that reaching reduces air cooling unit exhaust pressure, improves the mesh of unit performance driving economy
's.
The air cooling unit steam exhaust device emperature-lowering energy-saving system of the utility model, has the effect that
1, Direct Air-cooled Unit vacuum can be improved in summer, improves unit efficiency, it is limited double due to contributing to reduce unit
The economic loss of detailed rules and regulations examination；
2, the air cooling blower fan economical operating condition time is increased, is adjusted by operation and parameter, shortens air cooling blower fan height
Frequency especially overclocking runing time, reduces air cooling blower fan power consumption, reduces station service power consumption rate, improves Runing e conomy indicator；
3, winter can prevent a small amount of steam from entering Air-Cooling Island under air cooling unit initial start stage, the less situation operating condition of quantity of steam
In avoid it is air-cooled tube bank freezeout occurs under small vapour amount operating condition；
4, carrying out mixing in air-cooled steam exhaust device is heat exchange, and effect is good, reduces the disadvantage that surface is heat exchanger end difference；
5, steam turbine exhaust heat is comprehensively utilized, cold source energy is reduced, improves air cooling unit operating thermal efficiency；
6, to energy-saving and emission-reduction, reduce air environmental pollution, reduce greenhouse gas emissions plus few SO2 emissions,
It reduces nitrogen oxide emission and plays positive effect；
7, effectively avoid being built in exhaust apparatus carry out waste heat utilization equipment unit is running can not maintenance issue.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
In figure: 1- steam exhaust device；2- sparge pipe；3: nozzle；4- surface exchanger；5- hot well device；6- condenses water cooling
But delivery pump；7- valve；8- non-return valve.
Specific embodiment
With reference to the accompanying drawing, the air cooling unit steam exhaust device drop back pressure energy conserving system of the utility model is carried out further
Illustrate:
As shown in Figure 1, back pressure energy conserving system, including steam exhaust device 1, the steam discharge dress drop in a kind of air cooling unit steam exhaust device
It sets 1 bottom and the cooling delivery pump 6 of condensed water is connected by pipeline, the cooling delivery pump 6 of the condensed water connects condensate system, described
System further includes six surface exchangers 4, the cooling delivery pump 6 of 5, three condensed waters of hot well device, 1 shell of steam exhaust device
Inside is equipped with five layers of sparge pipe 2, is evenly equipped with the downward triangular nozzle 3 of several spray heads, the hot well on the sparge pipe 2
The bottom of steam exhaust device 1 is arranged in device 5, and the cooling delivery pump 6 of three condensed waters simultaneously connects rear one end and the company of hot well device 5
It connects, the other end and six surface exchangers 4 and the water inlet after connecing is connect, the water outlet of surface exchanger 4 and the sparge pipe 2
Water inlet connection, the two sides of the surface exchanger 4 are provided with control valve 7, the two of the cooling delivery pump 6 of the condensed water
Side is respectively arranged with non-return valve 8 and control valve 7.
The surface exchanger 4 is selected respectively to be met the cooling surface-type heat exchanger 2 of cooling 200t/h condensed water, meets
The surface-type heat exchanger 1 for heating 30t/h domestic hot-water, is expired at the surface-type heat exchanger 1 for meeting heating 100t/h chemistry water
The surface-type heat exchanger 1 of foot heating 100t/h plant area heating network meets the heating big heat supply network of 50t/h just moisturizing surface-type heat exchanger
1.
It is conveyed when it is implemented, steam exhaust device 1 is discharged into 35 ~ 60 DEG C of condensates in hot well device 5 by the way that condensed water is cooling
6 pressurization of pump enters surface exchanger 4 and exchanges heat, and condensed water temperature drop is after cooling solidifying to 15 ~ 25 DEG C after surface-type heat exchange 4
Every layer of sparge pipe 2 is born water, is come into full contact with after the atomization of nozzle 3 with steam exhaust, is carried out mixed heat transfer in 1 shell of steam exhaust device, make
Steam exhaust condenses rapidly in part steam exhaust device 1, reduces the steam amount for entering air cooling tubes condenser, and the heat for reducing air cooling tubes condenser is negative
Lotus improves the purpose of unit performance driving economy so that reaching reduces air cooling unit exhaust pressure.
Inner space needed for steam exhaust device of the invention has enough arrangement spray condensates is with 300MW steam exhaust device
Example, inside is for device arrangement space are as follows: long 8.8 meters, 8.3 meters wide, 7.5 meters high, using after condensed water nozzle atomization with steam exhaust
It is sufficiently mixed heat exchange, good effect of heat exchange, there is no poor problem is held, condensate and cooling medium carry out water-water surface formula and exchange heat, heat exchange
Area is greatly decreased, and is conducive to technological transformation and arranges.
After the scheme of the present embodiment is implemented, domestic hot-water, water manufacturing system unboiled water are heated using partial coagulation water, subtracted
Few unit cold source energy, improves unit performance driving economy.It is equipped with plant area hot water supply system in Middle Shanxi power plant, by phase
Close reference record, sorting-out in statistics data are as follows: it is vapour source that plant area domestic hot-water heating is taken out by steam turbine five, and average day steam extraction amount is about
Are as follows: summer 4.5t/d, autumn 6t/d, spring 7t/d, winter 11t/d), it can satisfy summer using this patent scheme condensed water
Five pumping steam consumptions can be greatly decreased in 45 DEG C of standard requirements of domestic hot-water, spring, autumn, three season of winter；Every year by the end of October to utilizing portion at the beginning of 4 months
Divide condensed water heating domestic hot water, water manufacturing system unboiled water, plant area's heat supply return water preheating, by the end of October big heat supply network moisturizing preheating,
Unit cold source energy can be effectively reduced, unit performance driving economy is improved.
Claims (4)
1. back pressure energy conserving system drops in a kind of air cooling unit steam exhaust device, including steam exhaust device, the steam exhaust device bottom pass through pipe
Road connects the cooling delivery pump of condensed water, and the cooling delivery pump of the condensed water connects condensate system, it is characterised in that the system is also
Including several surface exchangers, hot well device, the cooling delivery pump of several condensed waters, if the steam exhaust device enclosure interior is equipped with
Dried layer sparge pipe, the downward triangular nozzle of several spray heads is evenly equipped on the sparge pipe, and the hot well device setting is being arranged
The bottom of vapour device is connected to steam exhaust device, and several condensed waters cooling delivery pumps simultaneously connect rear one end and hot well device company
It connects, the other end and several surface exchangers and the water inlet after connecing is connect, the water outlet of surface exchanger and the sparge pipe
Water inlet connection.
2. back pressure energy conserving system drops in air cooling unit steam exhaust device according to claim 1, it is characterised in that the sparge pipe
Equipped with five layers.
3. back pressure energy conserving system drops in air cooling unit steam exhaust device according to claim 1, it is characterised in that the surface is changed
Control valve is respectively set in the two sides of hot device, and the two sides of the cooling delivery pump of the condensed water are provided with non-return valve and control valve.
4. back pressure energy conserving system drops in air cooling unit steam exhaust device according to claim 1, it is characterised in that the surface is changed
There are six hot device is set, it is raw respectively to meet the cooling surface-type heat exchanger 2 of cooling 200t/h condensed water, satisfaction heating 30t/h
The surface-type heat exchanger 1 of hot water living, meets heating 100t/ at the surface-type heat exchanger 1 for meeting heating 100t/h chemistry water
The surface-type heat exchanger 1 of h plant area heating network meets just moisturizing surface-type heat exchanger 1 of the heating big heat supply network of 50t/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821375252.2U CN208847001U (en) | 2018-08-24 | 2018-08-24 | A kind of air cooling unit steam exhaust device drop back pressure energy conserving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821375252.2U CN208847001U (en) | 2018-08-24 | 2018-08-24 | A kind of air cooling unit steam exhaust device drop back pressure energy conserving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208847001U true CN208847001U (en) | 2019-05-10 |
Family
ID=66356562
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821375252.2U Expired - Fee Related CN208847001U (en) | 2018-08-24 | 2018-08-24 | A kind of air cooling unit steam exhaust device drop back pressure energy conserving system |
Country Status (1)
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| CN (1) | CN208847001U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081633A (en) * | 2020-09-29 | 2020-12-15 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Device for realizing backpressure reduction and waste heat utilization of direct air cooling unit |
| CN112344758A (en) * | 2020-10-23 | 2021-02-09 | 东方电气集团东方汽轮机有限公司 | Deep heat supply cold end system of direct air cooling unit |
-
2018
- 2018-08-24 CN CN201821375252.2U patent/CN208847001U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081633A (en) * | 2020-09-29 | 2020-12-15 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Device for realizing backpressure reduction and waste heat utilization of direct air cooling unit |
| CN112081633B (en) * | 2020-09-29 | 2024-03-29 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Device for realizing back pressure reduction and waste heat utilization of direct air cooling unit |
| CN112344758A (en) * | 2020-10-23 | 2021-02-09 | 东方电气集团东方汽轮机有限公司 | Deep heat supply cold end system of direct air cooling unit |
| CN112344758B (en) * | 2020-10-23 | 2022-06-24 | 东方电气集团东方汽轮机有限公司 | Deep heat supply cold end system of direct air cooling unit |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190510 |