CN220879807U - Flue sampling tube cleaning system - Google Patents
Flue sampling tube cleaning system Download PDFInfo
- Publication number
- CN220879807U CN220879807U CN202322775956.6U CN202322775956U CN220879807U CN 220879807 U CN220879807 U CN 220879807U CN 202322775956 U CN202322775956 U CN 202322775956U CN 220879807 U CN220879807 U CN 220879807U
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- Prior art keywords
- sampling tube
- valve body
- time relay
- cleaning
- flue
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- 238000005070 sampling Methods 0.000 title claims abstract description 126
- 238000004140 cleaning Methods 0.000 title claims abstract description 93
- 239000007788 liquid Substances 0.000 claims abstract description 77
- 238000010926 purge Methods 0.000 claims abstract description 47
- 238000003860 storage Methods 0.000 claims abstract description 47
- 239000002699 waste material Substances 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000010408 sweeping Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims 5
- 238000002791 soaking Methods 0.000 abstract description 7
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000010881 fly ash Substances 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical class [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a flue sampling tube cleaning system, which comprises a detection device, wherein the detection device is connected with a flue in a penetrating way through a sampling tube, a high-pressure gas source storage tank is connected with one end of the sampling tube, which is close to the detection device, in a penetrating way through a purging pipe, a liquid outlet of a cleaning liquid storage tank is connected with one end of the sampling tube, which is close to the detection device, through a cleaning pipeline and a conveying pump, a valve body I is arranged on the purging pipe, a valve body IV is arranged on the cleaning pipeline and positioned between the conveying pump and the sampling tube, a valve body II is arranged at one end of the sampling tube, which is close to the detection device, a valve body III is arranged at the other end of the sampling tube, a liquid outlet at the low end of the sampling tube is connected with a liquid outlet of the sampling tube through a liquid outlet pipe, and a valve body V is arranged at one end of the liquid outlet pipe, which is close to the sampling tube. The cleaning system provided by the utility model is provided with the wet cleaning component and the dry purging component, the wet cleaning component is used for soaking and cleaning the sampling tube, and then the purging component is used for purging and discharging the residual cleaning waste liquid on the inner wall surface of the sampling tube, so that the cleaning quality of the sampling tube is obviously improved.
Description
Technical Field
The utility model relates to the technical field of flue sampling devices, in particular to a flue sampling tube cleaning system.
Background
The thermal power plant is a plant for producing electric energy by using coal, petroleum and natural gas as fuel, and the basic production process is as follows: the fuel is combusted in the boiler to heat water to generate steam, chemical energy of the fuel is converted into heat energy, steam pressure pushes the steam turbine to rotate, the heat energy is converted into mechanical energy, and then the steam turbine drives the generator to rotate, so that the mechanical energy is converted into electric energy.
In order to monitor the operation condition of the boiler in the thermal power plant, a wind pressure detection device and a detection device for the content of various gas components (oxygen, nitrogen-oxygen compounds, unburned hydrocarbons and the like) are usually arranged on a flue of a wind-smoke system, so that data feedback is provided for the normal operation of the boiler. The detection devices all need to be provided with sampling pipes communicated with the sampling sensor and the flue. Because the content of fly ash in the flue gas is very high, when flue gas flows through the sampling tube and enters the detection device, the fly ash solid particles in the flue gas are easy to accumulate and adhere to the inner wall surface of the flue gas sampling tube, so that the flue gas sampling tube is easy to generate a blocking phenomenon, and the blocked flue gas sampling tube can cause unrealistic feedback data to influence the normal operation of a boiler.
However, most of the basic cleaning mechanisms of the gas purging mechanisms currently on the market for cleaning flue sampling tubes are: and adopting high-pressure purge gas to dry-purge the sampling tube. The dry method for sweeping and cleaning the flue sampling tube has a certain sweeping and cleaning effect on some flue sampling tubes in the initial stage of use, but the method has poor effect on the sampling tube after long-time sampling, because the inner wall surface of the sampling tube after long-time sampling is attached with stubborn fly ash particle stains, the stubborn fly ash particle stains on the inner wall surface of the sampling tube are difficult to be completely swept by high-pressure gas, and the sampling tube can be blocked after long time. Therefore, a new flue sampling tube cleaning system is needed to solve the above technical problems.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a flue sampling tube cleaning system, which comprises a wet cleaning component consisting of a cleaning liquid storage tank, a cleaning pipeline, a conveying pump, a valve body III and a valve body IV, wherein a high-pressure air source storage tank, a purging pipe, a valve body I and a valve body II form a dry purging component; the whole structure is simple in design, high in application feasibility and high in practicability.
In order to achieve the above purpose, the technical scheme of the utility model is to design a flue sampling tube cleaning system, which comprises a flue, a sampling tube, a detection device, a high-pressure air source storage tank, a purging tube, a cleaning liquid storage tank, a cleaning pipeline, a waste liquid storage tank and a liquid discharge tube, wherein the detection device is connected with the flue in a penetrating way through the sampling tube, the high-pressure air source storage tank is connected with one end, close to the detection device, of the sampling tube through the purging tube, a liquid outlet of the cleaning liquid storage tank is connected with one end, close to the detection device, of the sampling tube through the cleaning pipeline and the conveying pump, the purging tube is provided with a valve body I, the cleaning pipeline is provided with a valve body IV positioned between the conveying pump and the sampling tube, one end, close to the detection device, of the sampling tube is provided with a valve body III, the liquid discharge port, close to the low end of the sampling tube, is connected with the liquid inlet of the waste liquid storage tank through the liquid discharge tube, one end, close to the sampling tube, is provided with a valve body V, the connecting site of the purging tube and the sampling tube is connected with one end, close to the sampling tube, and the liquid discharge port on the sampling tube is positioned between the valve body II and the valve body III.
According to the flue sampling tube cleaning system, the cleaning liquid storage tank, the cleaning pipeline, the conveying pump, the valve body III and the valve body IV form the wet cleaning assembly, the high-pressure gas source storage tank, the purging pipe, the valve body I and the valve body II form the dry purging assembly, when the sampling tube is cleaned, the wet cleaning assembly firstly injects cleaning liquid into the sampling tube to soak and clean the sampling tube, the cleaned cleaning waste liquid is discharged into the waste liquid storage tank through the liquid discharge pipe and the valve body IV, and then the purging assembly purges the sampling tube to discharge the residual cleaning waste liquid on the inner wall surface of the sampling tube; the whole structure is simple in design, high in application feasibility and high in practicability.
The preferred technical scheme is that the purging pipe is further provided with a pressure reducing valve and a first check valve, the pressure reducing valve is located between the high-pressure air source storage tank and the first valve body, and the first check valve is located at one end, close to the sampling pipe, of the purging pipe. The pressure reducing valve can adjust high-pressure gas discharged from the high-pressure gas source storage tank to a proper pressure range of purge gas, and the one-way valve can prevent smoke in the sampling tube from flowing back into the purge tube, so that long-term cleanliness of the purge tube is ensured.
The further preferable technical scheme also comprises a first time relay, wherein the first time relay is a circulating time relay, a signal input end of the first time relay is electrically connected with the control system, and a signal output end of the first time relay is electrically connected with a normally open contact of the first valve body and a normally closed contact of the second valve body respectively. The automatic control of the gas purging operation of the sampling tube is realized through the first time relay, so that the manual participation workload is reduced.
Further preferable technical scheme is that one end of the cleaning pipeline, which is close to the sampling tube, is provided with a second check valve. The second check valve prevents the smoke in the sampling tube from flowing back into the cleaning pipeline, thereby ensuring the long-term cleanliness of the cleaning pipeline
Further preferred technical scheme still includes time relay two and time relay three, time relay two and time relay three be cycle time relay, time relay two's signal input part and control system electric connection, time relay two's signal output part respectively with the normally open contact of delivery pump, the normally open contact of valve body four, the normally closed contact electric connection of valve body three, time relay three's signal input part and control system electric connection, time relay three's signal output part and five electric connection of valve body. The automatic control of the wet-type soaking cleaning operation of the sampling tube is realized through the second time relay and the third time relay, and the manual participation workload is reduced.
Further preferably, an ultrasonic generator is arranged on the inner wall surface of the sampling tube and positioned between the second valve body and the third valve body, and a normally open contact of the ultrasonic generator is electrically connected with a signal output end of the second time relay. When the sampling tube is subjected to wet soaking cleaning operation, the ultrasonic generator is started, so that the wet ultrasonic cleaning effect of the sampling tube is achieved, and the wet cleaning effect of sampling is further improved.
Further preferable technical scheme is that the waste liquid storage tank is provided with a liquid level meter and an alarm which are electrically connected with the control system. When the cleaning waste liquid in the waste liquid storage tank reaches the highest liquid level upper limit value, the alarm sounds to remind an operator to timely treat the cleaning waste liquid.
The utility model has the advantages and beneficial effects that:
1. According to the flue sampling tube cleaning system, the cleaning liquid storage tank, the cleaning pipeline, the conveying pump, the valve body III and the valve body IV form the wet cleaning assembly, the high-pressure gas source storage tank, the purging pipe, the valve body I and the valve body II form the dry purging assembly, when the sampling tube is cleaned, the wet cleaning assembly firstly injects cleaning liquid into the sampling tube to soak and clean the sampling tube, the cleaned cleaning waste liquid is discharged into the waste liquid storage tank through the liquid discharge pipe and the valve body IV, and then the purging assembly purges the sampling tube to discharge the residual cleaning waste liquid on the inner wall surface of the sampling tube; the whole structure is simple in design, high in application feasibility and high in practicability.
2. The pressure reducing valve can adjust high-pressure gas discharged from the high-pressure gas source storage tank to a proper pressure range of purge gas, and the one-way valve prevents flue gas in the sampling tube from flowing back into the purge tube, so that long-term cleanliness of the purge tube is ensured;
3. the automatic control of the gas purging operation of the sampling tube is realized through the first time relay, and the automatic control of the wet-type soaking cleaning operation of the sampling tube is realized through the second time relay and the third time relay, so that the manual participation workload is reduced.
4. When the sampling tube is subjected to wet soaking cleaning operation, the ultrasonic generator is started, so that the wet ultrasonic cleaning effect of the sampling tube is achieved, and the wet cleaning effect of sampling is further improved.
5. When the cleaning waste liquid in the waste liquid storage tank reaches the highest liquid level upper limit value, the alarm sounds to remind an operator to timely treat the cleaning waste liquid.
Drawings
FIG. 1 is a schematic diagram of the flue sampling tube cleaning system of the present utility model.
In the figure: 1. a flue; 2. a sampling tube; 3. a detection device; 4. a high pressure gas source storage tank; 5. a purge tube; 6. a cleaning liquid storage tank; 7. cleaning the pipeline; 8. a waste liquid storage tank; 9. a liquid discharge pipe; 10. an ultrasonic generator; a. a pressure reducing valve; b. a valve body I; c. a first check valve; d. a valve body II; e. a valve body III; f. a transfer pump; g. a valve body IV; h. a second check valve; i. a valve body V; j. a time relay I; k. a time relay II; m, time relay III; n, a liquid level meter; o, alarm.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
Examples
As shown in fig. 1, the utility model relates to a flue sampling tube cleaning system, which comprises a flue 1, a sampling tube 2, a detection device 3, a high-pressure air source storage tank 4, a purging tube 5, a cleaning liquid storage tank 6, a cleaning pipeline 7, a waste liquid storage tank 8 and a liquid discharge tube 9, wherein the detection device 3 is communicated with the flue 1 through the sampling tube 2, the high-pressure air source storage tank 4 is communicated with one end, close to the detection device 3, of the sampling tube 2 through the purging tube 5, a liquid outlet of the cleaning liquid storage tank 6 is communicated with one end, close to the detection device 3, of the sampling tube 2 through the cleaning pipeline 7 and a conveying pump f, a valve body one b is arranged on the purging tube 5, a valve body four g is arranged between the conveying pump f and the sampling tube 2 on the cleaning pipeline 7, a valve body two d is arranged at one end, close to the detection device 3, a valve body three e is arranged at one end, close to the flue 1, a liquid discharge port at the low end of the sampling tube 2 is connected with a liquid inlet of the waste liquid storage tank 8 through the liquid discharge tube 9, one end, close to the sampling tube 2, is provided with five i, 5 is arranged at one end, close to the sampling tube 2, one end, close to the sampling tube 2 is provided with a liquid discharge port 5, a position point is connected with the valve body two d and the valve body 2 and the position is connected with the valve body one by two d.
Preferably, the purge pipe 5 is further provided with a pressure reducing valve a and a one-way valve c, the pressure reducing valve a is located between the high-pressure air source storage tank 4 and the valve body b, and the one-way valve c is located at one end of the purge pipe 5 close to the sampling pipe 2.
Further preferably, the valve further comprises a time relay I, wherein the time relay I is a circulation time relay, a signal input end of the time relay I is electrically connected with the control system, and a signal output end of the time relay I is electrically connected with a normally-open contact of the valve body I and a normally-closed contact of the valve body II respectively.
Preferably, the end of the cleaning pipeline 7 close to the sampling pipe 2 is provided with a one-way valve II.
Still preferably still, still include time relay two k and time relay three m, time relay two k and time relay three m be cycle time relay, time relay two k's signal input part and control system electric connection, time relay two k's signal output part respectively with the normally open contact of delivery pump f, the normally open contact of valve body four g, the normally closed contact of valve body three e electric connection, time relay three m's signal input part and control system electric connection, time relay three m's signal output part and valve body five i electric connection.
Further preferably, an ultrasonic generator 10 is arranged on the inner wall surface of the sampling tube 2 and is positioned between the second valve body d and the third valve body e, and a normally open contact of the ultrasonic generator 10 is electrically connected with a signal output end of the second time relay k.
Further preferably, the waste liquid storage tank 8 is provided with a liquid level meter n and an alarm o which are electrically connected with the control system.
The utility model relates to a working principle of a flue sampling tube cleaning system, which comprises the following steps:
When the sampling tube is cleaned, the control system controls the starting of the conveying pump f, the valve body four g, the ultrasonic generator 10 and the closing of the valve body three e through the time relay two k, simultaneously, the control system closes the valve body five i through the time relay three m, cleaning liquid in the cleaning liquid storage tank 6 is pumped into the sampling tube 2 through the cleaning pipeline 7, and ultrasonic soaking cleaning is carried out on the sampling tube 2 for a certain time; after ultrasonic soaking and cleaning reach preset time, the control system controls the starting valve body five i through the time relay three m, and cleaning waste liquid in the sampling tube 2 enters the waste liquid storage tank 8 through the liquid discharge pipe 9; then, the control system controls the starting valve body I to start the valve body B and the closing valve body II to close the valve body II through the time relay I, high-pressure purging gas discharged from the high-pressure gas source storage tank 4 is depressurized through the depressurization valve a and then enters the sampling tube 2, and gas purging is carried out on the sampling tube 2, so that residual cleaning waste liquid and floating solid stains on the inner wall surface of the sampling tube 2 enter the flue 1, and a cleaning period of the sampling tube 2 is completed once.
According to the flue sampling tube cleaning system, the cleaning liquid storage tank, the cleaning pipeline, the conveying pump, the valve body III and the valve body IV form the wet cleaning assembly, the high-pressure gas source storage tank, the purging pipe, the valve body I and the valve body II form the dry purging assembly, when the sampling tube is cleaned, the wet cleaning assembly firstly injects cleaning liquid into the sampling tube to soak and clean the sampling tube, the cleaned cleaning waste liquid is discharged into the waste liquid storage tank through the liquid discharge pipe and the valve body IV, and then the purging assembly purges the sampling tube to discharge the residual cleaning waste liquid on the inner wall surface of the sampling tube; the whole structure is simple in design, high in application feasibility and high in practicability.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (7)
1. The utility model provides a flue sampling tube cleaning system, its characterized in that includes flue (1), sampling tube (2), detection device (3), high-pressure air source storage tank (4), sweeps pipe (5), washing liquid storage tank (6), wash pipeline (7), waste liquid storage tank (8) and fluid-discharge tube (9), detection device (3) link up through sampling tube (2) and flue (1) and meet, high-pressure air source storage tank (4) link up through sweeping pipe (5) and sampling tube (2) and meet near the one end of detection device (3), the liquid outlet of washing liquid storage tank (6) link up through washing pipeline (7) and delivery pump (f) and sampling tube (2) and meet near the one end of detection device (3), washing pipe (5) on be equipped with valve body one (b), washing pipeline (7) on be equipped with be located valve body four (g) between delivery pump (f) and sampling tube (2), one end that sampling tube (2) be close to detection device (3) be equipped with valve body two (d), one end that is close to sampling tube (1) be equipped with three (e) is located the fluid-discharge tube (2) and is located the fluid-discharge tube (8) that is connected through the liquid inlet of low phase storage tank (8), one end of the liquid discharge pipe (9) close to the sampling pipe (2) is provided with a valve body five (i), and the connection site of the purging pipe (5) and the sampling pipe (2), the connection site of the cleaning pipe (7) and the sampling pipe (2) and the liquid discharge port on the sampling pipe (2) are all positioned between the valve body two (d) and the valve body three (e).
2. The flue sampling tube cleaning system according to claim 1, wherein the purging tube (5) is further provided with a pressure reducing valve (a) and a one-way valve (c), the pressure reducing valve (a) is located between the high-pressure gas source storage tank (4) and the valve body one (b), and the one-way valve one (c) is located at one end of the purging tube (5) close to the sampling tube (2).
3. The flue sampling tube cleaning system according to claim 2, further comprising a first time relay (j), wherein the first time relay (j) is a cycle time relay, a signal input end of the first time relay (j) is electrically connected with the control system, and a signal output end of the first time relay (j) is electrically connected with a normally open contact of the first valve body (b) and a normally closed contact of the second valve body (d) respectively.
4. A flue sampling tube cleaning system according to claim 3, characterized in that the end of the cleaning pipe (7) close to the sampling tube (2) is provided with a one-way valve II (h).
5. The flue sampling tube cleaning system according to claim 4, further comprising a second time relay (k) and a third time relay (m), wherein the second time relay (k) and the third time relay (m) are both circulation time relays, the signal input end of the second time relay (k) is electrically connected with the control system, the signal output end of the second time relay (k) is electrically connected with a normally open contact of the conveying pump (f), a normally open contact of the valve body IV (g) and a normally closed contact of the valve body III (e) respectively, the signal input end of the third time relay (m) is electrically connected with the control system, and the signal output end of the third time relay (m) is electrically connected with the valve body V (i).
6. The flue sampling tube cleaning system according to claim 5, wherein the ultrasonic generator (10) positioned between the second valve body (d) and the third valve body (e) is arranged on the inner wall surface of the sampling tube (2), and a normally open contact of the ultrasonic generator (10) is electrically connected with the signal output end of the second time relay (k).
7. The flue sampling tube cleaning system according to claim 6, wherein the waste liquid storage tank (8) is provided with a liquid level meter (n) and an alarm (o) which are electrically connected with the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322775956.6U CN220879807U (en) | 2023-10-17 | 2023-10-17 | Flue sampling tube cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322775956.6U CN220879807U (en) | 2023-10-17 | 2023-10-17 | Flue sampling tube cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220879807U true CN220879807U (en) | 2024-05-03 |
Family
ID=90841962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322775956.6U Active CN220879807U (en) | 2023-10-17 | 2023-10-17 | Flue sampling tube cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220879807U (en) |
-
2023
- 2023-10-17 CN CN202322775956.6U patent/CN220879807U/en active Active
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