CN215263203U - On-line measuring system for fly ash carbon content based on firing and microwave - Google Patents
On-line measuring system for fly ash carbon content based on firing and microwave Download PDFInfo
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- CN215263203U CN215263203U CN202120829786.3U CN202120829786U CN215263203U CN 215263203 U CN215263203 U CN 215263203U CN 202120829786 U CN202120829786 U CN 202120829786U CN 215263203 U CN215263203 U CN 215263203U
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- fly ash
- flying dust
- microwave
- sampling device
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Abstract
The utility model relates to a flying dust carbon content on-line measuring system based on firing and microwave, including the second flying dust sampling device who connects gradually, second downtake and microwave measuring device, second flying dust sampling device's input is connected to boiler flue, still include flying dust discharging equipment, and the first flying dust sampling device who connects gradually, first downtake and firing measuring device, microwave measuring device and firing measuring device's waste outlet all is connected to flying dust discharging equipment's input, second flying dust sampling device is connected to boiler flue, and flying dust direction of motion arranges in the boiler flue is followed to the junction of first flying sampling device and second flying dust sampling device and boiler flue. Compared with the prior art, the utility model has the advantages of convenient to use improves the degree of accuracy.
Description
Technical Field
The utility model relates to a flying dust carbon content measurement system especially relates to a flying dust carbon content on-line measuring system based on firing and microwave.
Background
Boiler combustion has always been an important problem in coal-fired power generation unit production, and the mechanical incomplete combustion heat loss is the second largest heat loss next to the heat loss of flue gas. For a power plant, the carbon content of the fly ash is an important index for reflecting the combustion efficiency of a coal-fired boiler of a thermal power plant, the real-time detection of the carbon content of the fly ash is favorable for guiding operating personnel to adjust the excess air coefficient and the proportion of the primary air speed, the secondary air speed and the air quantity which are possessed in time and correctly, the combustion control level of the boiler is improved, the index for reasonably controlling the carbon content of the fly ash is favorable for reducing the power generation cost, and the economical efficiency of unit operation is improved.
The existing measuring method for the carbon content in the fly ash of the coal-fired boiler mainly comprises an off-line method and an on-line method, wherein the off-line method is used for measuring the carbon content of a sample by adopting a burning method after proper sampling, and has the advantages of accurate result but has the defect of serious hysteresis of data. The other method adopts a microwave method to measure the carbon content of the fly ash, and has the advantages of high measuring speed, strong real-time performance and poor coal adaptability due to great influence of ash components.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flying dust carbon content on-line measuring system based on ignition and microwave, through having integrateed ignition measuring device and microwave measuring device to can provide two kinds of measuring results, can also have ageing when satisfying the degree of accuracy, the junction through first flying sampling device and second flying dust sampling device and boiler flue arranges along the setting mode of flying dust direction of motion in the boiler flue in addition, can improve ignition measuring device's measuring result as far as possible.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a flying dust carbon content on-line measuring system based on firing and microwave, includes second flying dust sampling device, second downcomer and the microwave measuring device that connects gradually, the input of second flying dust sampling device is connected to the boiler flue, still includes flying dust discharging equipment to and the first flying dust sampling device, first downcomer and the firing measuring device that connect gradually, microwave measuring device and firing measuring device's waste material export all are connected to flying dust discharging equipment's input, second flying dust sampling device is connected to the boiler flue, and the flying dust direction of motion in boiler flue is followed to the junction of first flying sampling device and second flying dust sampling device and boiler flue.
The distance between the first fly ash sampling device and the connection part of the second fly ash sampling device and the boiler flue is 5-15 cm.
The distance between the first fly ash sampling device and the connection part of the second fly ash sampling device and the boiler flue is 10 cm.
And a weighing device is arranged between the first descending pipe and the burning measuring device.
And a filter screen is arranged in the fly ash discharge device.
The filter screen is a stainless steel filter screen.
The pipe diameter of the second fly ash sampling device is larger than that of the first fly ash sampling device.
The system also comprises a display, and the display is respectively connected with the burning measuring device and the microwave measuring device.
The display is a liquid crystal display.
And a butterfly valve is arranged on the first fly ash sampling device.
Compared with the prior art, the utility model discloses following beneficial effect has:
1) by integrating the burning measuring device and the microwave measuring device, two measuring results can be provided, the accuracy is met, and meanwhile, the timeliness is realized.
2) The distance between the first flying sampling device and the connecting part of the second flying sampling device and the boiler flue is 10 cm, and the error is small.
3) The fly ash discharge device is provided with a filter screen, so that pollution can be reduced.
4) The first fly ash sampling device is provided with a butterfly valve which can be closed when burning measurement is not carried out, so that the precision of the microwave measuring device is improved.
Drawings
Fig. 1 is a schematic diagram of the architecture of the present invention;
fig. 2 is a schematic diagram of an embodiment of the present invention;
wherein: 1. the device comprises a boiler flue, 2, a first fly ash sampling pipe, 3, a first compressed air pipe, 4, a first separator, 5, a first descending pipe, 6, a weighing device, 7, a support piece, 8, a burning measuring device, 9, a burning side waste outlet, 10, a second fly ash sampling pipe, 11, a second compressed air pipe, 12, a second separator, 13, a second descending pipe, 14, a microwave transmitting and receiving device, 15, a buffer, 16, a microwave side waste outlet, 17, an electric signal processing and controller, 18 and a server.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
The utility model provides a flying dust carbon content on-line measuring system based on firing and microwave, as shown in fig. 1 and fig. 2, including the second flying dust sampling device that connects gradually, second downcomer 13 and microwave measuring device, the input of second flying dust sampling device is connected to boiler flue 1, still include flying dust discharging device, and the first flying dust sampling device that connects gradually, first downcomer 5 and firing measuring device 8, the waste material outlet of microwave measuring device and firing measuring device 8 all is connected to flying dust discharging device's input, second flying dust sampling device is connected to boiler flue 1, and the junction of first flying dust sampling device and second flying dust sampling device and boiler flue 1 is arranged along the flying dust direction of motion in boiler flue 1.
In some embodiments, the first and second fly ash sampling devices are located 5-15 cm from the connection to the boiler stack 1, and preferably, the first and second fly ash sampling devices are located 10 cm from the connection to the boiler stack 1 with a small error.
A weighing device 6 is arranged between the first descending pipe 5 and the burning measuring device 8.
In some embodiments, the fly ash discharge device is provided with a filter screen to reduce pollution, and preferably, the filter screen is a stainless steel filter screen and is more durable.
In some embodiments, the pipe diameter of the second fly ash sampling device is larger than that of the first fly ash sampling device, so that when the two parts are used simultaneously, the ash inlet amount of the microwave measuring device is enough.
In some embodiments, the system further comprises a display, which is connected to the burning measuring device 8 and the microwave measuring device, respectively, and which allows observation of the measurement results. The display is a liquid crystal display.
In some embodiments, a butterfly valve is provided on the first fly ash sampling device.
The microwave measuring device comprises a microwave transmitting and receiving device 14 and a buffer 15, the existing device can be adopted, and therefore description is omitted, the firing measuring device 8 can also adopt the existing device in the same way, the first fly ash sampling device comprises a first fly ash sampling tube 2, a first compressed air tube 3 and a first separator 4, the first fly ash sampling tube 2 obtains ash-containing flue gas from a boiler flue 1, the flue gas separation is realized in the first separator 4, then the flue gas uniformly falls into the weighing device 6, and then the flue gas is transferred to the firing measuring device 8 manually or through some mechanical devices, in the same way, the second fly ash sampling device comprises a second fly ash sampling tube 10, a second compressed air tube 11 and a second separator 12, and a butterfly valve is arranged at the front end of the second fly ash sampling tube 10, so that the blocking effect is improved.
Claims (10)
1. The utility model provides a flying dust carbon content on-line measuring system based on firing and microwave, includes second flying dust sampling device, second downcomer and the microwave measuring device that connects gradually, the input of second flying dust sampling device is connected to the boiler flue, its characterized in that still includes flying dust discharging equipment to and the first flying dust sampling device, first downcomer and the firing measuring device that connect gradually, the waste material export of microwave measuring device and firing measuring device all is connected to flying dust discharging equipment's input, second flying dust sampling device is connected to the boiler flue, and the flying dust direction of motion is arranged along the boiler flue to the junction of first flying dust sampling device and second flying dust sampling device and boiler flue.
2. The burning and microwave based fly ash carbon content on-line measuring system of claim 1, wherein the distance between the connection of the first fly sampling device and the second fly ash sampling device and the boiler flue is 5-15 cm.
3. The burning and microwave based fly ash carbon content on-line measuring system of claim 2, wherein the distance between the connection of the first fly sampling device and the second fly ash sampling device and the boiler flue is 10 cm.
4. The on-line measuring system for carbon content in fly ash based on burning and microwave as claimed in claim 1, wherein a weighing device is provided between the first descending pipe and the burning measuring device.
5. The system of claim 1, wherein a filter screen is disposed in the fly ash discharge device.
6. The burning and microwave based fly ash carbon content on-line measuring system of claim 5, wherein the filter screen is a stainless steel filter screen.
7. The burning and microwave based fly ash carbon content on-line measuring system of claim 1, wherein the pipe diameter of the second fly ash sampling device is larger than the pipe diameter of the first fly ash sampling device.
8. The on-line measuring system for carbon content in fly ash based on ignition and microwave as claimed in claim 1, wherein said system further comprises a display, said display is connected to the ignition measuring device and the microwave measuring device respectively.
9. The burning and microwave based fly ash carbon content on-line measuring system of claim 8, wherein the display is a liquid crystal display.
10. The burning and microwave based fly ash carbon content on-line measuring system of claim 1, wherein the first fly ash sampling device is provided with a butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120829786.3U CN215263203U (en) | 2021-04-21 | 2021-04-21 | On-line measuring system for fly ash carbon content based on firing and microwave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120829786.3U CN215263203U (en) | 2021-04-21 | 2021-04-21 | On-line measuring system for fly ash carbon content based on firing and microwave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215263203U true CN215263203U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120829786.3U Active CN215263203U (en) | 2021-04-21 | 2021-04-21 | On-line measuring system for fly ash carbon content based on firing and microwave |
Country Status (1)
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| CN (1) | CN215263203U (en) |
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2021
- 2021-04-21 CN CN202120829786.3U patent/CN215263203U/en active Active
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