CN208720186U - A kind of automatic detection and the control system for adjusting exhaust-heat boiler flue gas - Google Patents
A kind of automatic detection and the control system for adjusting exhaust-heat boiler flue gas Download PDFInfo
- Publication number
- CN208720186U CN208720186U CN201821276117.2U CN201821276117U CN208720186U CN 208720186 U CN208720186 U CN 208720186U CN 201821276117 U CN201821276117 U CN 201821276117U CN 208720186 U CN208720186 U CN 208720186U
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- China
- Prior art keywords
- oxygen
- eliminating device
- heat boiler
- control cabinet
- feed water
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Abstract
The utility model discloses a kind of automatic detection and the control systems of adjusting exhaust-heat boiler flue gas, including waste heat boiler, economizer, oxygen-eliminating device, feed water preheater and softened water tank, the waste heat boiler is connected with economizer, the feed water preheater is connected with economizer, the softened water tank is connected with oxygen-eliminating device, further include control cabinet, detection device is equipped on the flue that the economizer is connected with feed water preheater, is equipped with pneumatic regulation unit between the control cabinet and oxygen-eliminating device and feed water preheater.It realizes, the state of real-time detection flue gas, and will test information and feed back to control cabinet, by the start and stop of control cabinet controling adjustment device.It detects temperature and is higher than dew-point temperature, boiler feedwater enters back into after oxygen-eliminating device heating deoxygenation after first passing through feed water preheater preheating into waste heat boiler, reduces energy consumption；It detects temperature and is lower than dew-point temperature, boiler feedwater enters waste heat boiler after being directly entered oxygen-eliminating device heating deoxygenation, feed water preheater is prevented to be in cryosurface, avoids generating low-temperature corrosion.
Description
Technical field
The utility model relates to a kind of waste heat boiler control systems, more particularly, to a kind of automatic detection and adjust waste heat pot
The control system of kiln gas.
Background technique
Industrial continuous development, thus bring is exactly that energy consumption is huge in industrial production, energy waste is serious
The problems such as, energy-saving and emission-reduction, energy-saving problem how are effectively carried out also with constantly being mentioned among strategic plan.
Contain SO2 and SO3 in the flue gas that fuel combustion generates, and SO2, SO3 and water acid solution easy to form work as heat exchange
The temperature of pipe is lower, then can generate condensation in heat exchange tube wall and form corrosion, the temperature for condensing and resulting in corrosion is caused to claim
Be dew-point temperature.And in order to guarantee that boiler heat exchange face will not be because corrosion damages, the exhaust gas temperature of boiler design requires
It is set in the temperature higher than dew-point temperature.Usually for waste heat boiler exhaust gas temperature at 200 DEG C or more, some is even up to 300 at present
DEG C or more, the problem of so high exhaust gas temperature is followed by brought, the exactly a large amount of energy was directly slatterned, so how to lead to
Reduction waste heat boiler exhaust gas temperature is crossed, and guarantees that exhaust gas temperature is vital more than flue gas dew point.
Summary of the invention
In view of the above-mentioned state of the art, the technical problem to be solved by the utility model is to provide a kind of inspections in real time
Survey and adjust the control system of exhaust-heat boiler flue gas.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of automatic detection and adjusting waste heat pot
The control system of kiln gas, including waste heat boiler, economizer, oxygen-eliminating device, feed water preheater and softened water tank, the waste heat boiler with
Economizer is connected, and it further includes control cabinet that the feed water preheater is connected with economizer, and the softened water tank is connected with oxygen-eliminating device,
The flue that the economizer is connected with feed water preheater is equipped with the detection device being connected with the control cabinet, the detection device
Including flue-gas temperature sensor, flue gas flow meter and infrared sensor；The control cabinet and oxygen-eliminating device and feed water preheater it
Between be equipped with pneumatic regulation unit, the pneumatic regulation unit includes the No.1 being placed between control cabinet and the water supplement port of oxygen-eliminating device
Pneumatic operated valve, be placed in control cabinet and feed-water preheating dress device admission port between No. two pneumatic operated valves and be placed in oxygen-eliminating device and water supply
The soft water outlet of No. three pneumatic operated valves between preheater, the oxygen-eliminating device connects feed water preheater.
Further, water pump is equipped between the softened water tank and oxygen-eliminating device.
The beneficial effects of the utility model are: by the flue that economizer is connected with feed water preheater be equipped with it is described
The connected detection device of control cabinet, the state of real-time detection flue gas, and will test information and feed back to control cabinet, it is controlled by control cabinet
The start and stop of regulating device；It is specific: when detecting flue-gas temperature lower than dew point temperature value, to automatically open No.1 pneumatic operated valve, close
No. two pneumatic operated valves and No. three pneumatic operated valves, boiler feedwater enter waste heat boiler after being directly entered oxygen-eliminating device heating deoxygenation, prevent water supply
Preheater is in cryosurface, avoids generating low-temperature corrosion to feed water preheater；When detecting flue-gas temperature higher than dew point temperature value,
No. two pneumatic operated valves and third pneumatic operated valve are automatically opened, No.1 pneumatic operated valve is closed, boiler feedwater first passes through feed water preheater preheating
After enter back into oxygen-eliminating device heating deoxygenation after enter waste heat boiler, it is possible to provide boiler feed temperature, while improving boiler efficiency.
Detailed description of the invention
Fig. 1 is the structural system frame of a kind of automatic detection of the utility model and the control system for adjusting exhaust-heat boiler flue gas
Figure.
Specific embodiment
Below with reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.Based in the utility model being embodiment, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Shown in Fig. 1, a kind of automatic detection and the control system for adjusting exhaust-heat boiler flue gas, including waste heat boiler 10, save coal
Device 20, oxygen-eliminating device 60, feed water preheater 40 and softened water tank 50, the waste heat boiler 10 are connected with economizer 20, and the water supply is pre-
Hot device 40 is connected with economizer 20, and the softened water tank 50 is connected with oxygen-eliminating device 60, further includes control cabinet 30, in the economizer 20
The flue 24 being connected with feed water preheater 40 is equipped with the detection device being connected with the control cabinet 30, and the detection device includes
Flue-gas temperature senses 21 devices, flue gas flow meter 22 and infrared sensor 23；The control cabinet 30 and oxygen-eliminating device 60 and water supply are pre-
Be equipped with pneumatic regulation unit between hot device 40, the pneumatic regulation unit include be placed in control cabinet and oxygen-eliminating device water supplement port it
Between No.1 pneumatic operated valve 31, be placed in control cabinet and feed-water preheating dress device admission port between No. two pneumatic operated valves 32 and be placed in
The soft water outlet of No. three pneumatic operated valves 33 between oxygen-eliminating device and feed water preheater, the oxygen-eliminating device 60 connects feed water preheater 40.
Water pump 51 is equipped between the softened water tank 50 and oxygen-eliminating device 60.
The beneficial effects of the utility model are: by the flue that economizer is connected with feed water preheater be equipped with it is described
The connected detection device of control cabinet, the state of real-time detection flue gas, and will test information and feed back to control cabinet, it is controlled by control cabinet
The start and stop of regulating device；It is specific: when detecting flue-gas temperature lower than dew point temperature value, to automatically open No.1 pneumatic operated valve, close
No. two pneumatic operated valves and No. three pneumatic operated valves, boiler feedwater enter waste heat boiler after being directly entered oxygen-eliminating device heating deoxygenation, prevent water supply
Preheater is in cryosurface, avoids generating low-temperature corrosion to feed water preheater；When detecting flue-gas temperature higher than dew point temperature value,
No. two pneumatic operated valves and third pneumatic operated valve are automatically opened, No.1 pneumatic operated valve is closed, boiler feedwater first passes through feed water preheater preheating
After enter back into oxygen-eliminating device heating deoxygenation after enter waste heat boiler, it is possible to provide boiler feed temperature, while improving boiler efficiency.
Although waste heat boiler, economizer, exhaust pass, feed water preheater, oxygen-eliminating device, softened water tank is used more herein
Equal terms；But it does not exclude the possibility of using other terms.The use of these items is only for more easily describe to conciliate
Release essence of the invention；Being construed as any additional limitation is disagreed with spirit of that invention.
Claims (2)
1. a kind of automatic detection and the control system for adjusting exhaust-heat boiler flue gas, including waste heat boiler, economizer, oxygen-eliminating device, give
Water preheater and softened water tank, the waste heat boiler are connected with economizer, and the feed water preheater is connected with economizer, the soft water
Case is connected with oxygen-eliminating device, which is characterized in that further includes control cabinet, sets on the flue that the economizer is connected with feed water preheater
There is a detection device being connected with the control cabinet, the detection device includes flue-gas temperature sensor, flue gas flow meter and infrared
Line sensor；Pneumatic regulation unit, the pneumatic adjusting dress are equipped between the control cabinet and oxygen-eliminating device and feed water preheater
Set including be placed between control cabinet and the water supplement port of oxygen-eliminating device No.1 pneumatic operated valve, be placed in control cabinet and feed-water preheating dress device to
No. two pneumatic operated valves between the mouth of a river and No. three pneumatic operated valves being placed between oxygen-eliminating device and feed water preheater, the oxygen-eliminating device
Soft water outlet connects feed water preheater.
2. a kind of automatic detection according to claim 1 and the control system for adjusting exhaust-heat boiler flue gas, which is characterized in that
Water pump is equipped between the softened water tank and oxygen-eliminating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821276117.2U CN208720186U (en) | 2018-08-09 | 2018-08-09 | A kind of automatic detection and the control system for adjusting exhaust-heat boiler flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821276117.2U CN208720186U (en) | 2018-08-09 | 2018-08-09 | A kind of automatic detection and the control system for adjusting exhaust-heat boiler flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208720186U true CN208720186U (en) | 2019-04-09 |
Family
ID=65976836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821276117.2U Expired - Fee Related CN208720186U (en) | 2018-08-09 | 2018-08-09 | A kind of automatic detection and the control system for adjusting exhaust-heat boiler flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208720186U (en) |
-
2018
- 2018-08-09 CN CN201821276117.2U patent/CN208720186U/en not_active Expired - Fee Related
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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: 20190409 Termination date: 20200809 |
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| CF01 | Termination of patent right due to non-payment of annual fee |