CN206549037U - A kind of air preheater fire-fighting system - Google Patents
A kind of air preheater fire-fighting system Download PDFInfo
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- CN206549037U CN206549037U CN201720194764.8U CN201720194764U CN206549037U CN 206549037 U CN206549037 U CN 206549037U CN 201720194764 U CN201720194764 U CN 201720194764U CN 206549037 U CN206549037 U CN 206549037U
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Abstract
The utility model discloses a kind of air preheater fire-fighting system, including the air preheater with flue gas air inlet, flue gas exhaust outlet, air air inlet and air air outlet, flue gas air inlet and flue gas exhaust outlet are serially connected in the back-end ductwork of boiler, water spray window is offered on the side wall of back-end ductwork above flue gas air inlet, the upper end of water spray window is hinged with the hermetyic window for closing water spray window, the shower nozzle for being connected to water pump is provided with water spray window, direction where shower nozzle against flue gas air inlet, water pump is coupled with monitoring system, and monitoring system includes：Temperature-detecting device, including temperature sensor, for detecting the temperature at flue gas exhaust outlet, signal is detected in the signal output part output temperature of temperature sensor；Process circuit, is coupled to the signal output part of temperature sensor, the keying for controlling water pump according to temperature detection signal；Have the advantages that it is safe, be easy to safeguard, processing promptness of putting out a fire is high and accuracy of judgement.
Description
Technical field
The utility model is related to heat-exchange apparatus, more specifically, it relates to a kind of air preheater fire-fighting system.
Background technology
Air preheater（air pre-heater）Be exactly flue gas in boiler back end ductwork pass through internal fin will
Into the air preheat before boiler to the heating surface of certain temperature.Heat exchange performance for improving boiler, reduces energy expenditure.
Bobbin carriage preheater operation principle：Flue gas is flowed through outside bobbin carriage, and air passes through inside bobbin carriage, by temperature difference different heat transfer, from
And reach the purpose of the air heating to passing through inside bobbin carriage.
A kind of Water drop type tube air preheater is disclosed in Publication No. CN2328971 Chinese patent, its structure is special
Point is to constitute air duct by the air stream siphunculus that some cross sectional shapes are water-drop-shaped, and the big end of water-drop-shaped pipe cross section is rushed at
Flue gas direction of flow, flue gas flows on the outside of water-drop-shaped pipe, transversal flow water-drop-shaped pipe, reaches the purpose of heating inner air tube.
But in use, the combustible such as unburned complete ickings adulterated in flue gas tires out in the inwall of Water drop type tube air preheater
Product, because the flue-gas temperature just come from boiler conveying is higher, such as not in time to carrying out soot blowing processing, water-drop-shaped pipe in back-end ductwork
The easy spontaneous combustion of combustible of the inwall accumulation of air preheater, causes occur fire, but the Water drop type tube air preheater lacks
Corresponding extinguisher, security is low.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of air preheater fire-fighting system
System, puts out a fire to its inside, improves the security of air preheater in time when fire can occur in air preheater.
To achieve the above object, the utility model provides following technical scheme：
A kind of air preheater fire-fighting system, including with flue gas air inlet, flue gas exhaust outlet, air air inlet and air
The air preheater of air outlet, the flue gas air inlet and the flue gas exhaust outlet are serially connected in the back-end ductwork of boiler, described
Water spray window is offered on the side wall of back-end ductwork above flue gas air inlet, the upper end of the water spray window is hinged with for sealing
Close in the hermetyic window of the water spray window, the water spray window and be provided with the shower nozzle for being connected to water pump, the shower nozzle is described in
Direction where flue gas air inlet, the water pump is coupled with monitoring system, and the monitoring system includes：Temperature-detecting device, bag
A temperature sensor is included, for detecting the temperature at the flue gas exhaust outlet, and in the signal output part of the temperature sensor
Output temperature detects signal；Process circuit, is coupled to the signal output part of the temperature sensor, for receiving the temperature inspection
Survey signal and the keying of the water pump is controlled according to the temperature detection signal.
By using above-mentioned technical proposal, when the temperature that temperature sensor is detected at flue gas exhaust outlet rises to pre- constant temperature
When spending, show occurred fire in now air preheater, water pump is started by process circuit, the shower nozzle through being connected to water pump sprays
Effluent column, hermetyic window is rushed to open under the impact force action of water column, shower nozzle is washed by water into flue gas air inlet, so as to reach
The effect of fire extinguishing, you can be handled in time the fire that air preheater inside occurs, substantially increase air preheat
The security of device；And after fire goes out, the temperature that temperature sensor is detected at flue gas exhaust outlet is less than predetermined temperature, water is closed
Pump, hermetyic window is fallen and the window aperture seal that will spray water again under gravity, prevents the flue dust in back-end ductwork from entering spray
In water window, it is easy to safeguard and improves the sealing of system.
Further, the temperature-detecting device also includes heat conducting pipe disk below the flue gas air inlet, described to lead
The end of heat pipe is fixed on the side wall of the back-end ductwork below the flue gas air inlet, the detection probe of the temperature sensor
It is arranged in the heat conduction tube end.
By using above-mentioned technical proposal, by the heat conduction of heat conducting pipe of the disk below flue gas air inlet, heat conducting pipe is passed through
Arbitrary region temperature rise the heat conduction through heat conducting pipe can in time be detected by temperature sensor, substantially increase temperature
The sensitivity of sensor and detection range.
Further, it is provided with the water spray window on first sealing strip of circle, first sealing strip and is provided with one
The first rubber seal that circle is abutted against with the hermetyic window, the hermetyic window contains the composition of iron, first rubber seal
Circle between first sealing strip with being provided with the magnet mutually attracted with the hermetyic window.
By using above-mentioned technical proposal, when shower nozzle is not sprayed water, in the mutually attraction of magnet and the hermetyic window containing iron
Under, hermetyic window is closely connected in the first rubber seal, realizes the effect for improving water spray window aperture seal；And when shower nozzle spray
During water, only need to suitably adjust the hydraulic pressure of the water of water pump output can still wash hermetyic window open.
Further, the process circuit includes：Comparison circuit, is coupled to the signal output part of the temperature sensor,
For generating a threshold reference signal, and after air pressure detection signal is compared with the threshold reference signal, exported at it
One comparison signal of end output；Powered-down road is controlled, the output end of the comparison circuit is coupled to, for being controlled according to the comparison signal
Break-make between the water pump and power supply.
Further, the comparison circuit includes：Threshold reference signal generative circuit, with a first resistor R1, one
End is coupled to a direct current VCC_1, and the other end is grounded after being connected with a second resistance R2, from first resistor R1 and second resistance R2
Between produce the threshold reference signal；Comparator A, it is described with an in-phase input end, an inverting input and an output end
In-phase input end is coupled to the signal output part of the temperature sensor, and inverting input is coupled to the electricity of first resistor R1 and second
Hinder between R2, output end exports the comparison signal.
Further, the powered-down road of control includes：NPN triode Q3, its grounded emitter, base stage passes through one the 7th resistance
R7 be coupled to comparator A output end and by one the 8th resistance R8 and emitter stage altogether；Normally opened relay KM1, its coil
First end is coupled to a direct current VCC_2, and the second end of its coil is coupled to NPN triode Q3 colelctor electrode, its normally opened contact
Switch S1 is serially connected between the water pump and power supply；First diode D1, its positive pole is coupled to normally opened relay KM1 coil
First end, negative pole is coupled to the second end of normally opened relay KM1 coil.
By using above-mentioned technical proposal, when the temperature that temperature sensor is detected at flue gas exhaust outlet rises to pre- constant temperature
When spending, the magnitude of voltage of the air pressure detection signal of the signal output part output of temperature sensor is more than threshold reference signal, comparator A
Output high level simultaneously turns on NPN triode Q3, and conducting normally opened relay KM1 coil makes normally opened relay KM1 normally opened contact
S1 closures are switched, so as to realize the purpose for starting water pump to put out a fire in time；When temperature sensor is detected at flue gas exhaust outlet
When temperature is less than predetermined temperature, the magnitude of voltage of the air pressure detection signal of the signal output part output of temperature sensor is joined less than threshold value
Signal is examined, comparator A output low levels, NPN triode Q3 cut-offs, normally opened relay KM1 normally opened contact switch S1 disconnects, from
And reach the purpose switched off the pump in time.
Further, first resistor R1 is variable resistance.
By using above-mentioned technical proposal, the voltage of threshold reference signal can be adjusted by adjusting first resistor R1 resistances
Size, so as to adjust the triggering temperature at the flue gas exhaust outlet corresponding to conducting water pump, realizes that triggering temperature can be adjusted up and down, makes
Monitoring system can carry out triggering temperature correction according to the temperature of specifically used environment, make the judgement of monitoring system with controlling more
Accurately.
Further, the monitoring system also includes circuit for alarming, and the circuit for alarming includes：The He of LED 1
Buzzer H1；NPN triode Q1, its grounded emitter, base stage is coupled to comparator A output end by a 3rd resistor R3,
The negative electrode of the LED 1 is coupled to after its collector series connection 1 the 4th resistance R4, the LED 1
Anode is coupled to direct current VCC_2；NPN triode Q2, its grounded emitter, base stage is coupled to by one the 5th resistance R5 to be compared
The direct current VCC_2 is coupled to after device A output end, its resistance R6 of collector series connection 1 the 6th and buzzer H1.
By using above-mentioned technical proposal, when the temperature that temperature sensor is detected at flue gas exhaust outlet rises to pre- constant temperature
When spending, the magnitude of voltage of the air pressure detection signal of the signal output part output of temperature sensor is more than threshold reference signal, comparator A
Output high level simultaneously turns on NPN triode Q1 and NPN triode Q2, and LED 1 is lighted respectively and buzzer H1 is sent out
Go out buzzer, to point out staff's air preheater to there occurs fire, allow staff to carry out air preheater further
Cleaning is handled, and is eliminated safe hidden trouble.
Compared with prior art, the utility model has the advantages that：
（1）Water spray window is offered on the side wall of back-end ductwork, the upper end of water spray window is hinged with closing water spray window
The shower nozzle for being connected to water pump is provided with hermetyic window, water spray window, water pump is coupled with monitoring system, can be automatically to air preheat
The fire occurred inside device carries out timely fire extinguishing and handled, and substantially increases the security of air preheater；
（2）After switching off the pump, hermetyic window is fallen and the window aperture seal that will spray water again under gravity, be easy to safeguard and
The sealing of raising system；
（3）Temperature-detecting device is arranged on heat conduction pipe end including heat conducting pipe and detection probe of the disk below flue gas air inlet
Temperature sensor in portion, substantially increases sensitivity and the detection range of temperature sensor；
（4）It is provided with water spray window and is provided with a circle on first sealing strip of circle, the first sealing strip and is offseted with hermetyic window
The first rubber seal connect, hermetyic window contains iron, is provided between the first rubber seal and the first sealing strip and hermetyic window
The magnet mutually attracted, improves the sealing of system；
（5）First resistor R1 is variable resistance, and monitoring system can be triggered according to the temperature of specifically used environment
Temperature correction, makes the judgement and control of monitoring system more accurate；
（6）Monitoring system also includes circuit for alarming, is carried in time by circuit for alarming when air preheater there occurs fire
Show staff, allow staff that air preheater is further processed, eliminate safe hidden trouble.
Brief description of the drawings
Fig. 1 is the structural representation of the air preheater fire-fighting system of the present embodiment；
Fig. 2 is the upward view of the air preheater fire-fighting system of the present embodiment；
Fig. 3 is the air preheater fire-fighting system internal structure schematic diagram that line A-A is splitted along along Fig. 2 of the present embodiment；
Fig. 4 is the enlarged drawing in B portions in Fig. 3；
Fig. 5 is the internal structure schematic diagram of the heat conducting pipe of the present embodiment；
Fig. 6 is the enlarged drawing in C portions in Fig. 3；
Fig. 7 is the internal structure schematic diagram of the casing of the present embodiment；
Fig. 8 is the circuit diagram of the monitoring system of the present embodiment.
Reference：1st, flue gas air inlet；2nd, flue gas exhaust outlet；3rd, air air inlet；4th, air air outlet；5th, air is pre-
Hot device；6th, back-end ductwork；7th, water spray window；8th, hermetyic window；9th, casing；10th, water pipe；11st, water pump；12nd, shower nozzle；13rd, monitoring system
System；14th, temperature-detecting device；15th, temperature sensor；16th, process circuit；17th, heat conducting pipe；18th, installation sheet；19th, the first sealing
Side；20th, the first rubber seal；21st, magnet；22nd, comparison circuit；23rd, powered-down road is controlled；24th, threshold reference signal generative circuit；
25th, circuit for alarming.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
As shown in Fig. 1, Fig. 6 and Fig. 7, a kind of air preheater fire-fighting system, including arranged with flue gas air inlet 1, flue gas
The plate air preheater 5 in air port 2, air air inlet 3 and air air outlet 4, flue gas air inlet 1 and flue gas exhaust outlet 2 are concatenated
In the back-end ductwork 6 of boiler.Water spray window 7 is offered on the side wall of the back-end ductwork 6 of the top of flue gas air inlet 1, window of spraying water
The upper end of mouth 7 is hinged with the hermetyic window 8 for closing water spray window 7.The outside of water spray window 7 is covered with casing 9, casing 9 fixed
There are the shower nozzle 12 that water pump 11 is connected to by water pipe 10, the direction where shower nozzle 12 against flue gas air inlet 1.
As shown in Fig. 4, Fig. 5 and Fig. 8, water pump 11 is coupled with the monitoring system 13 of its keying of control, and monitoring system 13 includes：
Temperature at temperature-detecting device 14, including a temperature sensor 15, the detection probe of temperature sensor 15 gets over the temperature of height output
The magnitude of voltage of degree detection signal is bigger, for detecting the temperature at flue gas exhaust outlet 2, and in the signal output of temperature sensor 15
Hold output temperature detection signal；Process circuit 16, is coupled to the signal output part of temperature sensor 15, for receiving temperature detection
Signal and the keying that water pump 11 is controlled according to temperature detection signal.
When the temperature at temperature sensor 15 detects flue gas exhaust outlet 2 rises to predetermined temperature, show now air
Occur fire in preheater 5, water pump 11 started by process circuit 16, the shower nozzle 12 through being connected to water pump 11 sprays water column,
Hermetyic window 8 is rushed to open under the impact force action of water column, shower nozzle 12 is washed by water into flue gas air inlet 1, so as to reach
The effect of fire extinguishing, you can be handled in time the fire that the inside of air preheater 5 occurs；And after fire goes out, TEMP
Device 15 detects temperature at flue gas exhaust outlet 2 and is less than predetermined temperature, switches off the pump 11, and hermetyic window 8 is weighed under gravity
It is new to fall and seal water spray window 7, prevent the flue dust in back-end ductwork 6 from entering in water spray window 7, be easy to safeguard and improve
The sealing of system.
As shown in Fig. 3, Fig. 4 and Fig. 5, temperature-detecting device 14 also includes being arranged on " U "-shaped below flue gas air inlet 1
Heat conducting pipe 17, two ends of heat conducting pipe 17 are fixed with two installation sheets 18, and installation sheet 18 is secured by bolts in flue gas and entered
On the side wall of the back-end ductwork 6 of the lower section of air port 1.The detection probe of temperature sensor 15 is threaded in the end of heat conducting pipe 17.
By the heat conduction of heat conducting pipe 17 of the disk below flue gas air inlet 1, the temperature for the arbitrary region that heat conducting pipe 17 is passed through rises through leading
The heat conduction of heat pipe 17 can in time be detected by temperature sensor 15, substantially increase the sensitivity and inspection of temperature sensor 15
Survey scope.
As shown in Figure 6 and Figure 7, it is welded with first sealing strip of circle 19, the first sealing strip 19 and is fixed with water spray window 7
One circle is used for the first rubber seal 20 abutted against with hermetyic window 8, and hermetyic window 8 is fabricated from iron and outside scribbles antirust paint.The
The magnet 21 mutually attracted with hermetyic window 8 is fixed between one rubber seal 20 and the first sealing strip 19.When shower nozzle 12 does not spray
During water, under mutually attraction of the magnet 21 with the hermetyic window 8 containing iron, hermetyic window 8 is closely connected in the first rubber seal 20,
Realize the effect for improving the water spray sealing of window 7；And when shower nozzle 12 is sprayed water, only need to suitably adjust the water of the output of water pump 11
Hydraulic pressure can still wash hermetyic window 8 open.
As shown in figure 8, process circuit 16 includes：Comparison circuit 22, is coupled to the signal output part of temperature sensor 15, uses
After generating a threshold reference signal, and air pressure detection signal is compared with threshold reference signal, in the ratio of its output end output one
Compared with signal；Control powered-down road 23, be coupled to the output end of comparison circuit 22, for according to comparison signal control water pump 11 and power supply it
Between break-make.
Comparison circuit 22 includes：Threshold reference signal generative circuit 24, with a first resistor R1, its one end is coupled to one
Direct current VCC_1, the other end is grounded after being connected with a second resistance R2, and threshold is produced between first resistor R1 and second resistance R2
It is worth reference signal；Comparator A, with an in-phase input end, an inverting input and an output end, in-phase input end is coupled to temperature
The signal output part of sensor 15 is spent, inverting input is coupled between first resistor R1 and second resistance R2, output end output
Comparison signal.
Controlling powered-down road 23 includes：NPN triode Q3, its grounded emitter, base stage is coupled to ratio by one the 7th resistance R7
Output end compared with device A and by one the 8th resistance R8 and emitter stage altogether；Normally opened relay KM1, the first end coupling of its coil
In a direct current VCC_2, the second end of its coil is coupled to NPN triode Q3 colelctor electrode, its normally opened contact switch S1 concatenations
Between water pump 11 and power supply；First diode D1, its positive pole is coupled to the first end of normally opened relay KM1 coil, negative pole
It is coupled to the second end of normally opened relay KM1 coil.
Monitoring system 13 also includes circuit for alarming 25, and circuit for alarming 25 includes：LED 1 and buzzer H1；
NPN triode Q1, its grounded emitter, base stage is coupled to comparator A output end by a 3rd resistor R3, its colelctor electrode string
The negative electrode that LED 1 is coupled to after one the 4th resistance R4 is connect, the anode of LED 1 is coupled to direct current
VCC_2；NPN triode Q2, its grounded emitter, base stage is coupled to comparator A output end by one the 5th resistance R5, and it collects
Electrode is coupled to direct current VCC_2 after concatenating one the 6th resistance R6 and buzzer H1.
When the temperature at temperature sensor 15 detects flue gas exhaust outlet 2 rises to predetermined temperature, temperature sensor 15
Signal output part output air pressure detection signal magnitude of voltage be more than threshold reference signal, comparator A output high level simultaneously lead
Logical NPN triode Q1, NPN triode Q2 and NPN triode Q3, on the one hand conducting normally opened relay KM1 coil, make it is normally opened after
Electrical equipment KM1 normally opened contact switch S1 closures, so as to realize the purpose for starting water pump 11 to put out a fire in time, on the other hand put brighten the hair
Optical diode LED1 and buzzer H1 is beeped, to point out staff's air preheater 5 to there occurs fire, allow work
Personnel carry out further cleaning processing to air preheater 5, eliminate safe hidden trouble；When temperature sensor 15 detects flue gas air draft
When temperature at mouth 2 is less than predetermined temperature, the air pressure of the signal output part output of temperature sensor 15 detects the magnitude of voltage of signal
Less than threshold reference signal, comparator A output low levels, NPN triode Q1, NPN triode Q2 and NPN triode Q are turned off,
Normally opened relay KM1 normally opened contact switch S1 disconnects, thus reach switch off the pump in time 11 purpose, while light emitting diode
LED1 and buzzer H1 is set also to be stopped.
In foregoing circuit, first comparator A is active voltage comparator, and power access end is coupled to direct current VCC_1, connect
Ground terminal is grounded；First resistor R1 is variable resistance.Threshold reference signal can be adjusted by adjusting first resistor R1 resistances
Voltage swing, thus adjust conducting water pump 11 corresponding to flue gas exhaust outlet 2 at triggering temperature, realize triggering temperature can above and below
Regulation, allows monitoring system 13 to carry out triggering temperature correction according to the temperature of specifically used environment, makes sentencing for monitoring system 13
It is disconnected more accurate with control.
Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (8)
1. a kind of air preheater fire-fighting system, including with flue gas air inlet (1), flue gas exhaust outlet (2), air air inlet
(3) and air air outlet (4) air preheater (5), the flue gas air inlet (1) and the flue gas exhaust outlet (2) are serially connected in
In the back-end ductwork (6) of boiler, it is characterised in that opened up on the side wall of the back-end ductwork (6) above the flue gas air inlet (1)
There is water spray window (7), the upper end of the water spray window (7) is hinged with the hermetyic window (8) for closing the water spray window (7),
The shower nozzle (12) for being connected to water pump (11), the opposite flue gas air intake of the shower nozzle (12) are provided with the water spray window (7)
Direction where mouth (1), the water pump (11) is coupled with monitoring system (13), and the monitoring system (13) includes：
Temperature-detecting device (14), including a temperature sensor (15), the temperature for detecting flue gas exhaust outlet (2) place,
And detect signal in the signal output part output temperature of the temperature sensor (15)；
Process circuit (16), is coupled to the signal output part of the temperature sensor (15), for receiving the temperature detection letter
Number and control the keying of the water pump (11) according to the temperature detection signal.
2. a kind of air preheater fire-fighting system according to claim 1, it is characterised in that the temperature-detecting device
(14) heat conducting pipe (17) disk below the flue gas air inlet (1) is also included, institute is fixed in the end of the heat conducting pipe (17)
On the side wall for stating the back-end ductwork (6) below flue gas air inlet (1), the detection probe of the temperature sensor (15) is arranged on institute
State in heat conducting pipe (17) end.
3. a kind of air preheater fire-fighting system according to claim 1, it is characterised in that in the water spray window (7)
It is provided with and is provided with a circle on first sealing strip of circle (19), first sealing strip (19) and is abutted against with the hermetyic window (8)
The first rubber seal (20), the composition of the hermetyic window (8) containing iron, first rubber seal (20) and described the
The magnet (21) mutually attracted with the hermetyic window (8) is provided between one sealing strip (19).
4. a kind of air preheater fire-fighting system according to claim 1, it is characterised in that process circuit (16) bag
Include：Comparison circuit (22), is coupled to the signal output part of the temperature sensor (15), for generating a threshold reference signal,
And after air pressure detection signal is compared with the threshold reference signal, a comparison signal is exported in its output end；Control is powered-down
Road (23), is coupled to the output end of the comparison circuit (22), for according to the comparison signal control the water pump (11) with
Break-make between power supply.
5. a kind of air preheater fire-fighting system according to claim 4, it is characterised in that comparison circuit (22) bag
Include：
Threshold reference signal generative circuit (24), with a first resistor R1, its one end is coupled to a direct current VCC_1, another
End is grounded after being connected with a second resistance R2, and the threshold reference signal is produced between first resistor R1 and second resistance R2；
Comparator A, with an in-phase input end, an inverting input and an output end, the in-phase input end is coupled to described
The signal output part of temperature sensor (15), inverting input is coupled between first resistor R1 and second resistance R2, output end
Export the comparison signal.
6. a kind of air preheater fire-fighting system according to claim 5, it is characterised in that the powered-down road of control (23) bag
Include：
NPN triode Q3, its grounded emitter, base stage is coupled to comparator A output end by one the 7th resistance R7 and passed through
One the 8th resistance R8 and emitter stage are altogether；
Normally opened relay KM1, the first end of its coil is coupled to a direct current VCC_3, and the second end of its coil is coupled to NPN tri-
Pole pipe Q3 colelctor electrode, its normally opened contact switch S1 is serially connected with the water pump (11) between power supply；
First diode D1, its positive pole is coupled to the first end of normally opened relay KM1 coil, and negative pole is coupled to normally opened relay
Second end of KM1 coil.
7. a kind of air preheater fire-fighting system according to claim 6, it is characterised in that first resistor R1 is can power transformation
Hinder device.
8. a kind of air preheater fire-fighting system according to claim 5, it is characterised in that the monitoring system (13) is also
Including circuit for alarming (25), the circuit for alarming (25) includes：
LED 1 and buzzer H1；
NPN triode Q1, its grounded emitter, base stage is coupled to comparator A output end, its current collection by a 3rd resistor R3
Pole concatenates the negative electrode that the LED 1 is coupled to after one the 4th resistance R4, the anode coupling of the LED 1
It is connected to direct current VCC_2；
NPN triode Q2, its grounded emitter, base stage is coupled to comparator A output end, its current collection by one the 5th resistance R5
Pole is coupled to the direct current VCC_2 after concatenating one the 6th resistance R6 and buzzer H1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720194764.8U CN206549037U (en) | 2017-03-01 | 2017-03-01 | A kind of air preheater fire-fighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720194764.8U CN206549037U (en) | 2017-03-01 | 2017-03-01 | A kind of air preheater fire-fighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206549037U true CN206549037U (en) | 2017-10-13 |
Family
ID=60361609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720194764.8U Expired - Fee Related CN206549037U (en) | 2017-03-01 | 2017-03-01 | A kind of air preheater fire-fighting system |
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| Country | Link |
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| CN (1) | CN206549037U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110665148A (en) * | 2019-09-26 | 2020-01-10 | 国网经济技术研究院有限公司 | Ventilation, water and gas fire-fighting linkage control method for energy storage power station |
-
2017
- 2017-03-01 CN CN201720194764.8U patent/CN206549037U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110665148A (en) * | 2019-09-26 | 2020-01-10 | 国网经济技术研究院有限公司 | Ventilation, water and gas fire-fighting linkage control method for energy storage power station |
| CN110665148B (en) * | 2019-09-26 | 2024-02-23 | 国网经济技术研究院有限公司 | Ventilation, water and gas fire-fighting linkage control method for energy storage power station |
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