CN217954013U - Sampling probe for continuous monitoring of flue gas - Google Patents
Sampling probe for continuous monitoring of flue gas Download PDFInfo
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- CN217954013U CN217954013U CN202221795225.7U CN202221795225U CN217954013U CN 217954013 U CN217954013 U CN 217954013U CN 202221795225 U CN202221795225 U CN 202221795225U CN 217954013 U CN217954013 U CN 217954013U
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Abstract
The utility model discloses a flue gas continuous monitoring sampling probe, include: the sampling device comprises a sampling rod and a sampling cavity, wherein a heating wire is arranged at the part of the sampling rod, which is positioned outside a flue, and a stainless steel sleeve is sleeved outside the heating wire; the part of the sampling rod, which is positioned at the inner side of the flue, is provided with a plurality of sampling holes; the sampling rod is connected with the sampling cavity, and the sampling cavity comprises a heating module, a filtering module and a back flushing module; the heating module is connected with the sampling cavity, and the filtering module is connected with the sampling cavity; and the back flushing module is connected with the sampling cavity. By the mode, the utility model increases multi-point sampling, and improves sampling accuracy and diversity; the heating wires are arranged outside the sampling rod outside the flue, so that the service life of the sampling rod is prolonged, the heating temperature in the sampling cavity is stable, the filtering precision is high, the operation is simple, and the maintenance and replacement time is shortened.
Description
Technical Field
The utility model relates to a flue gas continuous monitoring system field, concretely relates to flue gas continuous monitoring sampling probe.
Background
The Continuous flue gas Monitoring System (CEMS for short) is used for continuously and real-timely tracking and measuring flue gas discharged by pollution sources, and is used for real-timely Monitoring the total discharge amount of particulate pollutants and gaseous pollutants (SO 2, NOx, CO) in the flue gas discharged by each pollution source, and providing scientific basis for environmental protection management of the pollution sources and safe operation of dust removal and desulfurization equipment. The smoke sampling probe of the smoke continuous monitoring system plays an important role in the whole system. In the prior art, a part of a sampling rod in a sampling device adopting a direct extraction method is corroded at the outer side of a flue wall. The temperature of the place is low, moisture is easy to dewfall, acid corrosion is easy to occur, the service life of the sampling rod is shortened, and the installation cost is increased; in addition, the prior art mostly adopts single-point sampling smoke, and the smoke sampled by a single point cannot accurately obtain representative gas, so that the accuracy of continuous monitoring of the smoke is easily reduced; in the prior art, most of gas sampled by a sampling probe adopts a single filtering module, so that the filtering precision is low and the filtering area is small.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flue gas continuous monitoring sampling probe, the sampling pole that can solve flue gas continuous monitoring sampling probe life-span is low, the problem that the single-point sampling exactness is low. In order to solve the technical problem, the utility model discloses a technical scheme be: the sampling rod, the part of the sampling rod outside the flue is provided with a heating wire, and the heating wire is sleeved with a stainless steel sleeve; the part of the sampling rod, which is positioned at the inner side of the flue, is provided with a plurality of sampling holes; the sampling cavity is connected with the sampling rod and comprises a heating module, a filtering module and a back flushing module; the heating module is connected with the sampling cavity, and the filtering module is connected with the sampling cavity; the back flushing module is connected with the sampling cavity.
Preferably, the tail part of the sampling cavity is sealed and fastened by a rotating handle.
Preferably, the heating module comprises a thermistor, a temperature sensor, a temperature controller, a temperature alarm and a relay; one end of the temperature controller is connected with the temperature sensor and the temperature alarm, and the other end of the temperature controller is connected with the relay and the thermistor.
Preferably, the temperature controller is a digital display temperature controller and/or the relay is a contactless electronic relay.
Preferably, the filtering module comprises a ceramic filter element and a nickel alloy filter, and the ceramic filter element and the nickel alloy filter are detachably connected with the sampling cavity; the ceramic filter element is connected with the nickel alloy filter.
Preferably, the back-blowing module comprises a back-blowing electromagnetic valve, a time controller, a back-blowing gas pipe and a back-blowing gas tank; one end of the back-blowing air pipe is connected with the back-blowing electromagnetic valve, and the other end of the back-blowing air pipe is connected with the back-blowing air tank; and the time controller is connected with the back-blowing electromagnetic valve.
Preferably, the blowback gas tank is provided with a gas inlet and a gas outlet, the gas inlet is connected with the air generator, and the gas outlet is used for blowing out 0.4-0.6MPa of clean oil-free compressed air.
Preferably, the length of the sampling rod is 300mm-1500mm. The sampling aperture is 20mm-30mm.
Preferably, a heat preservation cover is arranged outside the sampling cavity, and a rainproof cover is arranged outside the heat preservation cover.
Preferably, the sampling rod is detachably connected with one end of the sampling cavity through a flange sleeve; the other end of the sampling cavity is connected with a flue gas analysis system through a heat tracing pipeline.
The utility model has the advantages that: the utility model increases multi-point sampling, and improves the sampling accuracy and diversity; the heating wire is added on the outer side part of the sampling rod flue, the service life of the sampling rod is prolonged, the heating temperature of the sampling cavity is stable, the filtering area is large, the double-filtering precision is high, the operation is simple, and the maintenance and replacement time is shortened.
Drawings
FIG. 1 is a structural diagram of a sampling probe for continuous monitoring of flue gas;
FIG. 2 is a structure diagram of a sampling rod of a sampling probe for continuous monitoring of flue gas;
FIG. 3 is a block diagram of a heating module of a continuous flue gas monitoring and sampling probe;
in fig. 1-3: 1 sampling cavity, 2 heating module, 3 filtration module, 4 blowback modules, 5 flange sleeves, 6 sampling poles, 7 heat preservation covers, 8 rain-proof covers, 9 sampling holes, 10 heater strips, 11 temperature sensor, 12 temperature controller, 13 temperature alarm, 14 relay, 15 thermistor.
Detailed Description
For making the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention:
referring to fig. 1, a smoke continuous monitoring sampling probe is fixedly installed at a proper position of a flue (or a chimney) according to national specifications, smoke enters a sampling cavity 1 of the smoke concentration continuous monitoring sampling probe from a sampling rod 6 inserted into the wall of the flue, and the sampling cavity 1 comprises a heating module 2, a filtering module 3 and a back blowing module 4; the heating module 2 is connected with the sampling cavity 1, and the filtering module 3 is connected with the sampling cavity 1; and the back flushing module 4 is connected with the sampling cavity 1. The sampling rod 6 is detachably connected with one end of the sampling cavity 1 through a flange sleeve; the other end of the sampling cavity 1 is connected with a flue gas analysis system through a heat tracing pipeline, and the flue gas is output to the flue gas analysis system from a flue. The sampling flue gas of the tested sampling flue gas is always in a high-temperature state in the sampling process, and in order to prevent water vapor in the sampling flue gas from condensing in the filter, the heating module 2 is arranged in the sampling cavity 1, so that the working condition of the filter is improved. A thermistor and a temperature sensor are installed in the sampling cavity 1, and the heating temperature can be set through a temperature controller. In order to improve the accuracy of the measuring result, a filtering module 3 is arranged in a sampling cavity 1, double filtering is adopted, and the smoke collected by a sampling rod is primarily filtered by a ceramic filter element; and then secondary filtration is carried out through a nickel alloy filter. The ceramic filter element and the nickel alloy filter are detachably connected with the sampling cavity 1; ceramic filter core specifically adopts the rotation type with adding the nickel alloy filter, and rotatory 90 can easily change the filter core, and filter area is big, and filter fineness is high, and it is convenient to change. The back-blowing module 4 comprises a back-blowing electromagnetic valve, a time controller, a back-blowing gas pipe and a back-blowing gas tank; one end of the back-blowing air pipe is connected with the back-blowing electromagnetic valve, and the other end of the back-blowing air pipe is connected with the back-blowing air tank; the time controller is connected with the back-blowing electromagnetic valve. The back blowing module 4 is used for blowing the probe and the filter, blowing dust attached to the sampling cavity and the filter back to the flue, and realizing the function of automatically removing accumulated dust in the sampling probe and the sampling pipeline at regular intervals through the time controller. The back-blowing air tank is provided with an air inlet and an air outlet, the air inlet is connected with the air generator, and the air outlet is used for blowing out 0.4-0.6MPa of clean oil-free compressed air. The industrial control software can set and inquire the parameters of back flushing: a) Two purge intervals b) time per purge. The tail of the sampling cavity is sealed and fastened by a rotating handle, and the sealing part ensures the sealing effect through a tetrafluoro gasket. The sampling cavity 1 is also provided with a heat-insulating cover 7, and the thickness of the heat-insulating cover 7 is 40mm; rain-proof cover 8 is set up to the heat preservation cover 7 outside. The temperature of whole sampling process can be guaranteed to heat preservation cover 7, and rain-proof cover can let the sampling probe be used for outdoor severe environment. The part of the smoke continuous monitoring sampling probe, which is contacted with smoke, is made of 316L stainless steel materials, and the corrosion resistance is very strong under the high-temperature condition. The continuous monitoring and sampling probe for the smoke concentration is suitable for gas sampling under various working conditions, such as various applications including dust, moisture, corrosivity, high temperature and the like.
Referring to fig. 2, a heating wire is arranged at the part of the sampling rod 6, which is positioned outside the flue, and specifically, a heating wire 10 is arranged at the position of 400mm from the flange sleeve of the sampling rod 6 to the flue section, and a stainless steel sleeve is sleeved outside the heating wire 10; the part of the sampling rod, which is positioned at the inner side of the flue, is provided with a plurality of sampling holes 9; the heating temperature is increased to be not lower than 80 ℃, a 316L stainless steel sleeve is sleeved outside the heating wire 10 to ensure that the flue gas does not contact the heating wire; the sampling rod is provided with 3 sampling holes 9, the aperture of each sampling hole 9 adopts a decreasing principle from large to small, and the sampling precision is improved; the sampling aperture is 20-30mm, 25mm and 20mm respectively. The length of the sampling rod is 300mm-1500mm, and the length of the sampling rod is customized according to the requirements of customers.
Referring to fig. 3, the heating module 2 in the sampling chamber 1 comprises a thermistor 15, a temperature sensor 11, a temperature alarm 13, and a relay 14. The user sets for the target value of heating temperature through the industrial computer, gives temperature controller with signal transmission, and temperature controller 12 controls can be with the flue gas heating of sampling to user's default. Through the temperature sensor 11, when the temperature of the cavity exceeds a preset value of a user, the temperature alarm 13 gives an alarm and reminds the user of an alarm signal through the industrial personal computer. The safety performance of the whole flue gas monitoring system is improved. The use of the adjustable temperature controller 12, the temperature controller 12 being typically set at 110-120 c, or 20 c above the flue gas temperature, prevents the sample gas from condensing and blocking the pipeline after condensation. The temperature controller 12 is a digital display temperature controller; the relay 14 is a contactless electronic relay.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (10)
1. A smoke continuous monitoring sampling probe, which is characterized by comprising:
the sampling rod is provided with a heating wire at the part of the sampling rod positioned outside the flue, and a stainless steel sleeve is sleeved outside the heating wire; the part of the sampling rod, which is positioned at the inner side of the flue, is provided with a plurality of sampling holes;
the sampling rod is connected with the sampling cavity, and the sampling cavity comprises a heating module, a filtering module and a back flushing module; the heating module is connected with the sampling cavity, and the filtering module is connected with the sampling cavity; and the back flushing module is connected with the sampling cavity.
2. The continuous smoke monitoring and sampling probe of claim 1, wherein the tail of the sampling cavity is sealed and fastened by a rotating handle.
3. The smoke continuous monitoring and sampling probe according to claim 1, wherein the heating module comprises a thermistor, a temperature sensor, a temperature controller, a temperature alarm and a relay; one end of the temperature controller is connected with the temperature sensor and the temperature alarm, and the other end of the temperature controller is connected with the relay and the thermistor.
4. The continuous monitoring and sampling probe for flue gas as claimed in claim 3, wherein the temperature controller is a digital display temperature controller, and/or the relay is a contactless electronic relay.
5. The continuous flue gas monitoring and sampling probe of claim 1, wherein the filtering module comprises a ceramic filter element and a nickel alloy filter, and the ceramic filter element and the nickel alloy filter are detachably connected with the sampling cavity; the ceramic filter element is connected with the nickel alloy filter.
6. The continuous smoke monitoring and sampling probe according to claim 1, wherein the back-blowing module comprises a back-blowing electromagnetic valve, a time controller, a back-blowing gas pipe and a back-blowing gas tank; one end of the back blowing pipe is connected with the back blowing electromagnetic valve, and the other end of the back blowing pipe is connected with the back blowing gas tank; and the time controller is connected with the back-blowing electromagnetic valve.
7. The continuous monitoring and sampling probe for flue gas as claimed in claim 6, wherein the blowback gas tank is provided with a gas inlet and a gas outlet, the gas inlet is connected with the air generator, and the gas outlet is used for blowing out 0.4-0.6MPa of clean oil-free compressed air.
8. The smoke continuous monitoring sampling probe of claim 1, wherein the sampling rod is 300mm to 1500mm in length; the sampling aperture is 20mm-30mm.
9. The continuous monitoring and sampling probe for flue gas according to claim 1, wherein a heat-insulating cover is arranged outside the sampling cavity, and a rainproof cover is arranged outside the heat-insulating cover.
10. The continuous flue gas monitoring and sampling probe of claim 1, wherein the sampling rod is detachably connected to one end of the sampling cavity through a flange sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221795225.7U CN217954013U (en) | 2022-07-11 | 2022-07-11 | Sampling probe for continuous monitoring of flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221795225.7U CN217954013U (en) | 2022-07-11 | 2022-07-11 | Sampling probe for continuous monitoring of flue gas |
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| CN217954013U true CN217954013U (en) | 2022-12-02 |
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| CN202221795225.7U Active CN217954013U (en) | 2022-07-11 | 2022-07-11 | Sampling probe for continuous monitoring of flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115963239A (en) * | 2023-02-13 | 2023-04-14 | 四川聚才万合企业管理合伙企业(有限合伙) | Water quality measuring device and method |
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2022
- 2022-07-11 CN CN202221795225.7U patent/CN217954013U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115963239A (en) * | 2023-02-13 | 2023-04-14 | 四川聚才万合企业管理合伙企业(有限合伙) | Water quality measuring device and method |
| CN115963239B (en) * | 2023-02-13 | 2023-07-04 | 四川聚才万合企业管理合伙企业(有限合伙) | Water quality measuring device and method |
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