CN208817458U - A kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer - Google Patents
A kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer Download PDFInfo
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- CN208817458U CN208817458U CN201821173867.7U CN201821173867U CN208817458U CN 208817458 U CN208817458 U CN 208817458U CN 201821173867 U CN201821173867 U CN 201821173867U CN 208817458 U CN208817458 U CN 208817458U
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Abstract
The utility model discloses a kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer, it including PLC controller and is the power supply of electricity consumption module for power supply each in anti-blocking apparatus for ash, the input of PLC controller is terminated with flue gas flow rate monitoring device, first differential pressure pickup and the second differential pressure pickup, flue gas flow rate monitoring device is mounted on the upstream of low-level (stack-gas) economizer, first differential pressure pickup is mounted on the upstream of flue gas flow rate monitoring device, second differential pressure pickup is mounted on the downstream of low-level (stack-gas) economizer, the upstream of first differential pressure pickup is equipped with the double baffle doors of single shaft for adjusting flue gas flow rate in flue, servo motor is installed on flue outer wall at the uniaxial double baffle doors of installation, the output of PLC controller is terminated with servo-driver and combined aural and visual alarm.The utility model structure is simple, and rationally, perfect in shape and function, it is convenient to realize, high sensitivity, stability is good, can be effectively prevented the stifled ash of low-level (stack-gas) economizer, and practical, using effect is good for design, convenient for promoting the use of.
Description
Technical field
The utility model belongs to boiler plant technical field, and in particular to a kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer.
Background technique
The exhaust gas temperature of many station boilers in China is higher than design value, about 20 DEG C~30 DEG C higher than design value.So reducing
Exhaust gas temperature has important practical significance for saving fuel, reducing pollution.It is saved currently, installing low temperature additional in boiler back end ductwork
Coal device can achieve depth Mist heat recovering, increase generated energy, reduce coal consumption, save the purpose of desulfurization water consume.According to " fire
Power power plant cigarette wind pulverized coal channel designing technique regulation " and engineering experience, when designing flue, the reference value of flue gas flow rate is
9m/s, still, boiler of power plant unit operating load be not it is unalterable, most of the time boiler of power plant unit operating load compared with
Low, the flue gas flow rate in flue is lower, and flue gas carrying flying dust ability is weaker, is saving coal by low temperature so as to cause low flow velocity flue gas
Fouling phenomenon aggravates when device, has directly influenced the heat exchange property of low-level (stack-gas) economizer.
In the prior art, the method for preventing low-level (stack-gas) economizer dust stratification from blocking mainly has: (1) using the bottom of shutter pattern
Flue adds the ash bucket mode of rotary discharge valve；(2) a certain number of heat exchangers and baffle door are installed in flue, pass through pot
The load variations of furnace carry out the unlatching quantity of controllable register door to adjust the flow velocity of flue gas, system structure phase needed for (1) kind method
To complexity, required precision is high, and occupied area is also larger；Although (2) kind method has achieved the purpose that adjusting flue gas flow rate, still
Required system structure is also complex, and the flow velocity that flue gas is adjusted by the load variations of boiler has certain hysteresis quality.And
And anti-blocking apparatus for ash described in (1) kind method and (2) kind method can not be on the flue for being already installed with low-level (stack-gas) economizer
It is transformed, can only be replaced together with low-level (stack-gas) economizer, will cause certain wasting of resources.
Utility model content
The technical problem to be solved by the utility model is in view of the deficiency of the prior art, provide a kind of low temperature
The anti-blocking apparatus for ash of economizer, structure is simple, and rationally, perfect in shape and function, it is convenient to realize, high sensitivity, stability is good, energy for design
It is enough effectively prevented the stifled ash of low-level (stack-gas) economizer, practical, using effect is good, convenient for promoting the use of.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of anti-blocking ash of low-level (stack-gas) economizer
Device, it is characterised in that: including PLC controller and be the power supply of electricity consumption module for power supply each in anti-blocking apparatus for ash, the PLC
The input of controller is terminated with for detecting the flue gas flow rate monitoring device of flue gas flow rate in the flue of low-level (stack-gas) economizer upstream, being used for
Detect low-level (stack-gas) economizer upstream flue in flue gas pressures the first differential pressure pickup and for detecting low-level (stack-gas) economizer downstream flue
Second differential pressure pickup of interior flue gas pressures, the flue gas flow rate monitoring device are mounted on the upstream of low-level (stack-gas) economizer, and described
One differential pressure pickup is mounted on the upstream of flue gas flow rate monitoring device, and second differential pressure pickup is mounted on low-level (stack-gas) economizer
Downstream, the upstream of first differential pressure pickup are equipped with the double baffle doors of single shaft for adjusting flue gas flow rate in flue, installation
Servo electricity for driving the baffle door rotation of uniaxial double baffle doors is installed on the flue outer wall at uniaxial double baffle doors
Machine, the output axis connection of the uniaxial double baffle doors and servo motor, the output of the PLC controller is terminated with to be watched for controlling
Take the servo-driver of motor and the combined aural and visual alarm for prompting flue gas pressures exception in flue, the servo motor with it is described
The output end of servo-driver connects.
The anti-blocking apparatus for ash of above-mentioned a kind of low-level (stack-gas) economizer, it is characterised in that: the power supply is 24V switch electricity
Source.
The anti-blocking apparatus for ash of above-mentioned a kind of low-level (stack-gas) economizer, it is characterised in that: the PLC controller is Siemens
SMART200PLC, the end L+ of the Siemens SMART200PLC is connect with the cathode output end 24V of 24V Switching Power Supply, described
The end M of Siemens SMART200PLC is connect with the cathode output end 0V of 24V Switching Power Supply, the Siemens SMART200PLC's
The end PE ground connection.
The anti-blocking apparatus for ash of above-mentioned a kind of low-level (stack-gas) economizer, it is characterised in that: the flue gas flow rate monitoring device is
QJM8YSB-CEMS continuous flue gas monitoring device, the signal output end of the QJM8YSB-CEMS continuous flue gas monitoring device and west
The serial ports connection of the sub- SMART200PLC of door.
The anti-blocking apparatus for ash of above-mentioned a kind of low-level (stack-gas) economizer, it is characterised in that: first differential pressure pickup is model
For the cathode power supply end of the differential pressure pickup U1, the differential pressure pickup U1 of PTG802 and the cathode output end of 24V Switching Power Supply
24V connection, the negative electricity source of the differential pressure pickup U1 are connect with the cathode output end 0V of 24V Switching Power Supply, the pressure difference
The signal output end of sensor U1 is connect with the input end of analog signal I1.0 of Siemens SMART200PLC；Second pressure difference
Cathode power supply end and the 24V Switching Power Supply that sensor is the differential pressure pickup U2, the differential pressure pickup U2 of model PTG802
Cathode output end 24V connection, the cathode output end 0V of the negative electricity source of the differential pressure pickup U2 and 24V Switching Power Supply connects
It connects, the signal output end of the differential pressure pickup U2 is connect with the input end of analog signal I1.2 of Siemens SMART200PLC.
The anti-blocking apparatus for ash of above-mentioned a kind of low-level (stack-gas) economizer, it is characterised in that: the combined aural and visual alarm includes buzzer
And red indicating light, the buzzer are connect with the output end Q0.5 of Siemens SMART200PLC, the red indicating light and west
The output end Q0.6 connection of the sub- SMART200PLC of door.
A kind of anti-blocking apparatus for ash of above-mentioned low-level (stack-gas) economizer, it is characterised in that: the cathode power supply of the servo-driver
End VIN is connect with the cathode output end 24V of 24V Switching Power Supply, and the negative electricity source SG and 24V of the servo-driver switch electricity
The cathode output end 0V connection in source, the pulse signal input terminal PG's and Siemens SMART200PLC of the servo-driver is defeated
Outlet Q0.0 connection, the output end Q0.1 of the direction signal input terminal NG and Siemens SMART200PLC of the servo-driver
Connection, the output end Q0.2 of the enable signal input terminal SON and Siemens SMART200PLC of the servo-driver are connect.
Compared with the prior art, the utility model has the following advantages:
1, the utility model has the advantages of simple structure, and rationally, perfect in shape and function, it is convenient to realize for design.
2, the utility model is real using the QJM8YSB-CEMS continuous flue gas monitoring device for being mounted on low-level (stack-gas) economizer upstream
When detection flue in flue gas flowing velocity, data are quickly transferred to by serial ports by Siemens SMART200PLC, Siemens
SMART200PLC, which controls servo motor by servo-driver, makes uniaxial double baffle doors rotate corresponding angle, adjusts in flue
The flowing velocity of flue gas, raising flue gas carrying flying dust ability, high sensitivity, stability are good.
3, the utility model acquires cigarette using the second differential pressure pickup PTG802 for being mounted on low-level (stack-gas) economizer downstream in real time
Flue gas pressures value in road, while by the first collected flue gas of differential pressure pickup PTG802 of the value and low-level (stack-gas) economizer upstream
Pressure value is compared, when fiducial value be higher than the pre-set threshold value of Siemens SMART200PLC, show inside low-level (stack-gas) economizer
With accumulating over a long period, stifled ash is serious, and Siemens SMART200PLC controls combined aural and visual alarm alarm, perfect in shape and function, high reliablity.
4, the utility model can promote the use of in the anti-blocking ash of the low-level (stack-gas) economizer of various coal-fired power station boilers, practical
Property it is strong, using effect is good, convenient for promote the use of.
In conclusion the utility model has the advantages of simple structure, rationally, perfect in shape and function, it is convenient to realize, high sensitivity, surely for design
It is qualitative good, it can be effectively prevented the stifled ash of low-level (stack-gas) economizer, practical, using effect is good, convenient for promoting the use of.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is the mounting structure schematic diagram of the utility model.
Fig. 2 is the PLC controller circuit connection diagram of the utility model.
Description of symbols:
1-PLC controller；2-flue gas flow rate monitoring devices；3-the first differential pressure pickup；
4-the second differential pressure pickup；5-uniaxial double baffle doors；6-servo motors；
7-servo-drivers；8-power supplies；9-combined aural and visual alarms；
9-1-buzzer；9-2-red indicating light.
Specific embodiment
As shown in Figure 1, the utility model includes PLC controller 1 and the confession for electricity consumption module for power supply each in anti-blocking apparatus for ash
Power supply 8, the input of the PLC controller 1 are terminated with the flue gas for detecting flue gas flow rate in the flue of low-level (stack-gas) economizer upstream
Flow monitoring device 2, the first differential pressure pickup 3 for detecting flue gas pressures in the flue of low-level (stack-gas) economizer upstream and for detecting
The second differential pressure pickup 4 of flue gas pressures, the flue gas flow rate monitoring device 2 are mounted on low temperature in the flue of low-level (stack-gas) economizer downstream
The upstream of economizer, first differential pressure pickup 3 are mounted on the upstream of flue gas flow rate monitoring device 2, and second pressure difference passes
Sensor 4 is mounted on the downstream of low-level (stack-gas) economizer, and the upstream of first differential pressure pickup 3 is equipped with for adjusting flue gas in flue
The double baffle doors 5 of the single shaft of flow velocity are installed and are equipped on the flue outer wall at uniaxial double baffle doors 5 for driving uniaxial double gears
The servo motor 6 of the baffle door rotation of plate door 5, the output axis connection of the uniaxial double baffle doors 5 and servo motor 6, the PLC
The output of controller 1 is terminated with servo-driver 7 for controlling servo motor 6 and for prompting flue gas pressures in flue abnormal
Combined aural and visual alarm 9, the servo motor 6 connect with the output end of the servo-driver 7.
In the present embodiment, as shown in Fig. 2, the power supply 8 is 24V Switching Power Supply.
In the present embodiment, as shown in Fig. 2, the PLC controller 1 is Siemens SMART200PLC, the Siemens
The end L+ of SMART200PLC is connect with the cathode output end 24V of 24V Switching Power Supply, the end M of the Siemens SMART200PLC
It is connect with the cathode output end 0V of 24V Switching Power Supply, the end the PE ground connection of the Siemens SMART200PLC.
In the present embodiment, as shown in Fig. 2, the flue gas flow rate monitoring device 2 is QJM8YSB-CEMS continuous flue gas monitoring
Device, the signal output end of the QJM8YSB-CEMS continuous flue gas monitoring device and the serial ports of Siemens SMART200PLC connect
It connects.
When it is implemented, the probe of QJM8YSB-CEMS continuous flue gas monitoring device is mounted on the cigarette of low-level (stack-gas) economizer upstream
In road, the flow of flue gas speed in the flue of low-level (stack-gas) economizer upstream is acquired in real time, data are transferred to Siemens by 485 serial ports
In SMART200PLC.
In the present embodiment, as shown in Fig. 2, first differential pressure pickup 3 is the differential pressure pickup U1 of model PTG802,
The cathode power supply end of the differential pressure pickup U1 is connect with the cathode output end 24V of 24V Switching Power Supply, the differential pressure pickup U1
Negative electricity source connect with the cathode output end 0V of 24V Switching Power Supply, the signal output end of the differential pressure pickup U1 and west
The input end of analog signal I1.0 connection of the sub- SMART200PLC of door；Second differential pressure pickup 4 is the pressure of model PTG802
Gap sensor U2, the cathode power supply end of the differential pressure pickup U2 is connect with the cathode output end 24V of 24V Switching Power Supply, described
The negative electricity source of differential pressure pickup U2 is connect with the cathode output end 0V of 24V Switching Power Supply, the letter of the differential pressure pickup U2
Number output end is connect with the input end of analog signal I1.2 of Siemens SMART200PLC.
In the present embodiment, as shown in Fig. 2, the combined aural and visual alarm 9 includes buzzer 9-1 and red indicating light 9-2, it is described
Buzzer 9-1 is connect with the output end Q0.5 of Siemens SMART200PLC, the red indicating light 9-2 and Siemens
The output end Q0.6 connection of SMART200PLC.
When it is implemented, the first differential pressure pickup 3 is mounted in the upstream flue of low-level (stack-gas) economizer, low temperature is acquired in real time and is saved
Data are transferred in Siemens SMART200PLC by the flue gas pressures value in the flue of coal device upstream by input end of analog signal,
Second differential pressure pickup 4 is mounted in the downstream flue of low-level (stack-gas) economizer, acquires the cigarette in the flue of low-level (stack-gas) economizer downstream in real time
Data are transferred in Siemens SMART200PLC, Siemens SMART200PLC by air pressure force value by input end of analog signal
The collected flue gas pressures value of first differential pressure pickup 3 and the collected flue gas pressures value of the second differential pressure pickup 4 are compared
Compared with showing inside low-level (stack-gas) economizer with accumulating over a long period when fiducial value is higher than the pre-set threshold value of Siemens SMART200PLC
Stifled ash is serious, and Siemens SMART200PLC controls combined aural and visual alarm 9 and alarms, and staff is reminded to carry out artificial deashing.
In the present embodiment, as shown in Fig. 2, the cathode power supply end VIN of the servo-driver 7 and 24V Switching Power Supply are just
Pole output end 24V connection, the negative electricity source SG of the servo-driver 7 are connect with the cathode output end 0V of 24V Switching Power Supply,
The output end Q0.0 of the pulse signal input terminal PG and Siemens SMART200PLC of the servo-driver 7 are connect, the servo
The output end Q0.1 of the direction signal input terminal NG and Siemens SMART200PLC of driver 7 are connect, the servo-driver 7
Enable signal input terminal SON connect with the output end Q0.2 of Siemens SMART200PLC.
When it is implemented, the single shaft for adjusting flue gas flow rate in flue for being mounted on 3 upstream of the first differential pressure pickup is double
Baffle door 5 is controlled by servo motor 6, and servo motor 6 carries out mode position control by servo-driver 7, is mounted on low temperature
The flowing velocity of flue gas, passes through serial ports in the QJM8YSB-CEMS continuous flue gas monitoring device real-time detection flue of economizer upstream
Data are quickly transferred to Siemens SMART200PLC, Siemens SMART200PLC controls servo electricity by servo-driver 7
Machine 6 makes uniaxial double baffle doors rotate corresponding angle, adjusts the flowing velocity of flue gas in flue, improves flue gas and carries flying dust energy
Power realizes the anti-blocking ash of low-level (stack-gas) economizer.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to any simple modification to the above embodiments of the utility model technical spirit, change and equivalent structural changes, still
Belong in the protection scope of technical solutions of the utility model.
Claims (7)
1. a kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer, it is characterised in that: including PLC controller (1) and in anti-blocking apparatus for ash
The input of the power supply (8) of each electricity consumption module for power supply, the PLC controller (1) is terminated with for detecting low-level (stack-gas) economizer
Swim the flue gas flow rate monitoring device (2) of flue gas flow rate in flue, for detecting flue gas pressures in the flue of low-level (stack-gas) economizer upstream
First differential pressure pickup (3) and the second differential pressure pickup (4) for detecting flue gas pressures in the flue of low-level (stack-gas) economizer downstream, institute
The upstream that flue gas flow rate monitoring device (2) is mounted on low-level (stack-gas) economizer is stated, first differential pressure pickup (3) is mounted on flue gas stream
The upstream of slowdown monitoring device (2), second differential pressure pickup (4) are mounted on the downstream of low-level (stack-gas) economizer, first pressure difference
The upstream of sensor (3) is equipped with the double baffle doors (5) of single shaft for adjusting flue gas flow rate in flue, installs uniaxial double gears
Servo motor (6) for driving the baffle door rotation of uniaxial double baffle doors (5) is installed on the flue outer wall at plate door (5),
The output axis connection of the uniaxial double baffle doors (5) and servo motor (6), the output of the PLC controller (1), which is terminated with, to be used for
Control the servo-driver (7) of servo motor (6) and the combined aural and visual alarm (9) for prompting flue gas pressures exception in flue, institute
Servo motor (6) is stated to connect with the output end of the servo-driver (7).
2. a kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer described in accordance with the claim 1, it is characterised in that: the power supply
It (8) is 24V Switching Power Supply.
3. the anti-blocking apparatus for ash of a kind of low-level (stack-gas) economizer according to claim 2, it is characterised in that: the PLC controller
It (1) is Siemens SMART200PLC, the end L+ of the Siemens SMART200PLC and the cathode output end of 24V Switching Power Supply
24V connection, the end M of the Siemens SMART200PLC are connect with the cathode output end 0V of 24V Switching Power Supply, the Siemens
The end PE of SMART200PLC is grounded.
4. a kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer described in accordance with the claim 3, it is characterised in that: the flue gas flow rate prison
Surveying device (2) is QJM8YSB-CEMS continuous flue gas monitoring device, the letter of the QJM8YSB-CEMS continuous flue gas monitoring device
Number output end is connect with the serial ports of Siemens SMART200PLC.
5. a kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer described in accordance with the claim 3, it is characterised in that: first pressure difference passes
Cathode power supply end and the 24V Switching Power Supply that sensor (3) is the differential pressure pickup U1, the differential pressure pickup U1 of model PTG802
Cathode output end 24V connection, the cathode output end 0V of the negative electricity source of the differential pressure pickup U1 and 24V Switching Power Supply connects
It connects, the signal output end of the differential pressure pickup U1 is connect with the input end of analog signal I1.0 of Siemens SMART200PLC；Institute
State the differential pressure pickup U2 that the second differential pressure pickup (4) are model PTG802, the cathode power supply end of the differential pressure pickup U2
It is connect with the cathode output end 24V of 24V Switching Power Supply, negative electricity source and the 24V Switching Power Supply of the differential pressure pickup U2
Cathode output end 0V connection, the analog signal of the signal output end and Siemens SMART200PLC of the differential pressure pickup U2 are defeated
Enter I1.2 is held to connect.
6. a kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer described in accordance with the claim 3, it is characterised in that: the combined aural and visual alarm
It (9) include buzzer (9-1) and red indicating light (9-2), the output of buzzer (9-1) and Siemens SMART200PLC
Q0.5 connection is held, the red indicating light (9-2) connect with the output end Q0.6 of Siemens SMART200PLC.
7. a kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer described in accordance with the claim 3, it is characterised in that: the servo-driver
(7) cathode power supply end VIN is connect with the cathode output end 24V of 24V Switching Power Supply, the negative electricity of the servo-driver (7)
Source SG is connect with the cathode output end 0V of 24V Switching Power Supply, the pulse signal input terminal PG of the servo-driver (7) and west
The output end Q0.0 connection of the sub- SMART200PLC of door, the direction signal input terminal NG of the servo-driver (7) and Siemens
The output end Q0.1 connection of SMART200PLC, the enable signal input terminal SON of the servo-driver (7) and Siemens
The output end Q0.2 connection of SMART200PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821173867.7U CN208817458U (en) | 2018-07-24 | 2018-07-24 | A kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821173867.7U CN208817458U (en) | 2018-07-24 | 2018-07-24 | A kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208817458U true CN208817458U (en) | 2019-05-03 |
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ID=66271440
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821173867.7U Expired - Fee Related CN208817458U (en) | 2018-07-24 | 2018-07-24 | A kind of anti-blocking apparatus for ash of low-level (stack-gas) economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208817458U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405083A (en) * | 2021-07-16 | 2021-09-17 | 江苏太湖锅炉股份有限公司 | Drawer type flue heating surface |
-
2018
- 2018-07-24 CN CN201821173867.7U patent/CN208817458U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405083A (en) * | 2021-07-16 | 2021-09-17 | 江苏太湖锅炉股份有限公司 | Drawer type flue heating surface |
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Granted publication date: 20190503 Termination date: 20210724 |