CN205746945U - A kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door - Google Patents
A kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door Download PDFInfo
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- CN205746945U CN205746945U CN201620593035.5U CN201620593035U CN205746945U CN 205746945 U CN205746945 U CN 205746945U CN 201620593035 U CN201620593035 U CN 201620593035U CN 205746945 U CN205746945 U CN 205746945U
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- cigarette
- cooler
- heater
- power plant
- electric adjustable
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Abstract
A kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door, including control system, power plant condensation water system, cigarette cooler and chimney, the smoke inlet of cigarette cooler is connected with air preheater exhanst gas outlet, described power plant condensation water system is provided with some heaters being serially connected on condensate line, wherein one is connected with cigarette cooler cooling water pipeline entrance by pipeline at the condensation water outlet end of front heater, cigarette cooler cooling water pipe way outlet is then connected to another condensation water inlet end at post-heater, the described downstream of heater before post-heater is located at, the condensate pipe section connecting cigarette cooler cooling water pipeline entrance is provided with electric adjustable section door, it is provided with temperature measuring equipment in the smoke discharging pipe of cigarette cooler, described electric adjustable section door, temperature measuring equipment is connected with described control system respectively.This utility model can realize the stability contorting to cigarette cooler outlet exhaust gas temperature, reduces the discharge of flue gas heat, environmental protection and energy saving.
Description
Technical field
This utility model belongs to technical field of electric power, and a kind of power plant's cigarette cooler constant temperature utilizing electric adjustable section door can
Control smoke evacuation system.
Background technology
Along with running down of amblent air temperature, development low-carbon economy, promote sustainable development becomes human society and will send out future
The inevitable choice of exhibition.China has become one of greenhouse gas emission state maximum in the world, and " energy-saving and emission-reduction consumption reduction " is " 12
Five " important core of period Chinese society economic development.At present, the economic growth rate that China is pursued the most merely, and
Being protection and the prevention more focusing on environment, it is achieved sustainable growth, energy-saving and emission-reduction lower consumption " put in unprecedented strategy
Highly.
In technical field of power generation, reducing the discharge of heat, controlling cigarette cooler exiting flue gas with steady temperature discharge is to save
The energy, reduction carbon emission, the essential measure of protection environment.In thermal power plant, the thermal energy of only about 35% is electric energy, 60% with
On energy dissipation in atmospheric environment, cause the power plant cycle thermal efficiency relatively low.Exhaust gas heat loss in the various heat losses of thermal power plant
Turbine discharge heat loss of becoming estranged accounts for major part.The heat loss due to exhaust gas of boiler accounts for the 70%-80% of boiler heat loss, and along with
The raising of unit load, the increase of flue gas duct, there is the phenomenon of shunting of turning round in flue gas before cigarette cooler in addition so that enters
The flue gas flow entering each cigarette cooler is not quite similar, and controls to enter the controlled valve of cigarette cooler cooling water, it is impossible to control through not
With the flue-gas temperature of cigarette cooler cooling, thus result in each cigarette cooler exhaust gas temperature different.And when flue gas discharge capacity increases, cigarette cooler
Exhaust gas temperature generally raises.Therefore, the control system that how research realizes each cigarette cooler exhaust gas temperature constant, controlled has important
Realistic meaning.
Summary of the invention
For problems of the prior art, technical purpose of the present utility model provides a kind of electric adjustable section door that utilizes
Power plant's cigarette controlled smoke evacuation system of cooler constant temperature, makes each cigarette cooler exhaust gas temperature constant controlled.
For realizing above-mentioned technical purpose, the technical solution of the utility model is:
A kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door, including control system, power plant condensation
Water system, cigarette cooler and chimney, the described smoke inlet of cigarette cooler is connected with the exhanst gas outlet of air preheater, and its feature exists
In: described power plant condensation water system is provided with some heaters being serially connected on condensate line, and one of them is at front heater
Condensing water outlet end to be connected with cigarette cooler cooling water pipeline entrance by pipeline, the outlet of described cigarette cooler cooling water pipeline then connects
Receiving another condensation water inlet end at post-heater, the described downstream of heater before post-heater is located at, before being connected to
Heater is provided with electric adjustable section door, the smoke exhaust pipe of described cigarette cooler with the condensate pipe section of cigarette cooler cooling water pipeline entrance
Being provided with temperature measuring equipment in road, described electric adjustable section door, temperature measuring equipment are connected with described control system respectively.
On the basis of technique scheme, improve further or preferably scheme also include:
Described front, be adjacent heater at post-heater, be concatenated between two heaters on cigarette cooler cooling water pipeline
Condensate pipe section for bypass, between two heaters also by one main road condensate pipe section, road connect, described main road condense
Water pipe section is provided with bypass valve, and described bypass valve is connected with described control system.
Described heater is low-pressure heater.
Described control system is DCS tele-control system.
Beneficial effect:
This utility model smoke evacuation system is closed loop control, the flue gas that described control system can gather according to temperature measuring equipment
Temperature parameter controls the aperture of described electric adjustable section door and the break-make of other valve, the task performance of regulation cigarette cooler, thus has
Imitate controls in preset value by cigarette cooler outlet exhaust gas temperature, it is achieved stablizing of exhaust gas temperature, reduces the discharge of flue gas heat,
Environmental protection and energy saving, and this utility model reasonable in design, can transform in prior art, it is simple to realizes, is worthy to be popularized and makes
With.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In order to be further elucidated with the technical solution of the utility model and know-why, below in conjunction with the accompanying drawings with specific embodiment
This utility model is described further.
As it is shown in figure 1, a kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door, DCS remotely control
System processed, power plant condensation water system, cigarette cooler, chimney and the corresponding parts such as pipeline and valve that connect form.
The smoke inlet of described cigarette cooler is connected with the exhanst gas outlet of air preheater by flue 8, described power plant
Condensate system is provided with some low-pressure heaters being serially connected on condensate line, wherein, adjacent No. five low-pressure heaters 1 with
No. seven low-pressure heaters 2 are connected by the condensate pipe section that two-way is in parallel, and including a road main road and a roadside road, main road condenses
Water pipe section is provided with bypass valve 6, and bypass condensate pipe section is then concatenated on cigarette cooler cooling water pipeline 7, and the most preceding seven
The condensate line port of export of number low-pressure heater 2 is connected with cigarette cooler cooling water pipeline 7 entrance by one section of pipeline, described cigarette
The outlet of cooler cooling water pipeline 7 is then connected to the condensation water inlet end of posterior No. five low-pressure heaters 1.Described No. five low pressure
Heater 1 is positioned at the downstream of No. seven low-pressure heaters 2.Connect No. seven low-pressure heaters 2 and condense water out and cigarette cooler cooling water
The condensate pipe section of pipeline 7 inlet side is provided with electric adjustable section door 3, is provided with in the smoke discharging pipe of cigarette cooler connection chimney 5
Exhaust gas temperature measurement apparatus 4, described electric adjustable section door 3, bypass valve 6, temperature measuring equipment 4 remotely control with described DCS respectively
System connects.
In the present embodiment, the flue gas entering cigarette cooler takes from the flue gas that boiler back end ductwork air preheater is discharged, when sending out
After group of motors load increases, the flow entering cigarette cooler from air preheater outlet increases, thus causes the outlet smoke evacuation of cigarette cooler
Temperature improves, and when cigarette cooler exhaust gas temperature needs to adjust, DCS tele-control system can control bypass valve 6 and turn off No. five, No. seven
Main road condensate pipe section between low-pressure heater, make from No. seven low-pressure heaters 2 out condense water through the cigarette of cigarette cooler
After gas heating (cooled flue gas simultaneously), enter No. five low-pressure heaters 1.DCS tele-control system goes out by being arranged on cigarette cooler
The exhaust gas temperature measurement apparatus 4 of mouth flue gathers the parameter after flue-gas temperature raises, and through pid data computing, can obtain needing to increase
Add the flow entering cigarette cooler cooling water (i.e. from the condensation water of No. seven low-pressure heaters 2), and give electric adjustable section door (electric adjustable
Joint valve) 3 increase the instruction of concrete apertures, owing to cooling water flow increases, the final effect realizing strengthening cooled flue gas.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model is also
Having various changes and modifications, this utility model claims scope by appending claims, description and equivalent thereof
Define.
Claims (4)
1. utilize power plant's cigarette controlled smoke evacuation system of cooler constant temperature of electric adjustable section door, including control system, power plant condensation water
System, cigarette cooler and chimney, the described smoke inlet of cigarette cooler is connected with the exhanst gas outlet of air preheater, it is characterised in that:
Described power plant condensation water system is provided with some heaters being serially connected on condensate line, and one of them is in the condensation of front heater
Water outlet end is connected with cigarette cooler cooling water pipeline (7) entrance by pipeline, and the outlet of described cigarette cooler cooling water pipeline (7) is then
It is connected to another condensation water inlet end at post-heater, the described downstream of heater before post-heater is located at, is connected to
Front heater is provided with electric adjustable section door (3), described cigarette cooler with the condensate pipe section of cigarette cooler cooling water pipeline (7) entrance
Smoke discharging pipe in be provided with temperature measuring equipment (4), described electric adjustable section door (3), temperature measuring equipment (4) respectively with described control
System processed connects.
A kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door the most according to claim 1, it is special
Levy and be, described front, be adjacent heater at post-heater, be concatenated into cigarette cooler cooling water pipeline (7) between two heaters
On condensate pipe section for bypass, between two heaters also by one main road condensate pipe section, road connect, described main road coagulate
Bearing water line segments and be provided with bypass valve (6), described bypass valve (6) is connected with described control system.
A kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door the most according to claim 1 and 2, its
Being characterised by, described heater is low-pressure heater.
A kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door the most according to claim 1 and 2, its
Being characterised by, described control system is DCS tele-control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620593035.5U CN205746945U (en) | 2016-06-17 | 2016-06-17 | A kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620593035.5U CN205746945U (en) | 2016-06-17 | 2016-06-17 | A kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205746945U true CN205746945U (en) | 2016-11-30 |
Family
ID=57387104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620593035.5U Expired - Fee Related CN205746945U (en) | 2016-06-17 | 2016-06-17 | A kind of power plant's cigarette controlled smoke evacuation system of cooler constant temperature utilizing electric adjustable section door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205746945U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486706A (en) * | 2019-08-09 | 2019-11-22 | 国电新能源技术研究院有限公司 | A kind of thermal power generation unit fume afterheat utilizes intelligence control system |
| CN112524592A (en) * | 2020-11-30 | 2021-03-19 | 浙江浙能兰溪发电有限责任公司 | Method and system for linearly controlling constant design value of smoke discharge temperature of coal-fired boiler |
-
2016
- 2016-06-17 CN CN201620593035.5U patent/CN205746945U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486706A (en) * | 2019-08-09 | 2019-11-22 | 国电新能源技术研究院有限公司 | A kind of thermal power generation unit fume afterheat utilizes intelligence control system |
| CN112524592A (en) * | 2020-11-30 | 2021-03-19 | 浙江浙能兰溪发电有限责任公司 | Method and system for linearly controlling constant design value of smoke discharge temperature of coal-fired boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20170617 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |