CN212722258U - High-temperature flue gas sampling device - Google Patents
High-temperature flue gas sampling device Download PDFInfo
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- CN212722258U CN212722258U CN202021334549.1U CN202021334549U CN212722258U CN 212722258 U CN212722258 U CN 212722258U CN 202021334549 U CN202021334549 U CN 202021334549U CN 212722258 U CN212722258 U CN 212722258U
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Abstract
The utility model discloses a high-temperature flue gas sampling device, which comprises a sampling probe, a sampling tube, a first temperature sensor, an automatic temperature control and cooling device and a second temperature sensor, wherein the first temperature sensor, the automatic temperature control and cooling device and the second temperature sensor are sequentially arranged along the axial length direction of the outer side wall of the sampling tube; the sampling probe is detachably connected with the sampling tube, the first temperature sensor is arranged at one end of the sampling tube close to the sampling probe, and the second temperature sensor is arranged at one end of the sampling tube far away from the sampling probe; the automatic temperature control and cooling device is automatically started or stopped according to the signal transmitted by the second temperature sensor; the second temperature sensor is used as the feedback of the automatic temperature control and reduction device, so that the regulation and control of the flue gas temperature are realized, the flue gas temperature is ensured not to be too high to damage a detection instrument, and meanwhile, the flue gas temperature is ensured not to be too low to cause condensation, so that the accuracy and the reliability of a detection result are ensured.
Description
Technical Field
The utility model relates to a high temperature flue gas sampling technical field specifically is a high temperature flue gas sampling device.
Background
In biomass direct-fired power generation boilers, coal-fired boilers and boilers in the chemical industry, the metallurgy industry and other industries, the chemical composition, the phase and the reducing atmosphere of high-temperature flue gas in the boiler are accurately measured, and the method has important significance for researching the combustion reaction process in the boiler, the high-temperature corrosion condition, the pollutant emission characteristic and the like.
At present, two modes are mainly used for sampling and detecting high-temperature flue gas of a hearth, one mode is to collect the flue gas by using a special container and carry the flue gas to a laboratory for treatment and analysis, the method has higher requirement on the tightness of the sampling container, and the flue gas is easy to condense in the container after being cooled, so that the detection result is inaccurate; the other type is field sampling detection, but the temperature of smoke in the furnace is too high, the conventional metal sampling gun is very easy to soften and deform, and the high-temperature smoke can cause damage to a detection instrument.
The Chinese utility model with application number of 201810253698.6 and publication number of 20180921 discloses a sampling device for extracting smoke dust from high-temperature flue gas, which directly cools the flue gas with water, but the method is not suitable for containing NH although the cooling speed is high3、SO2Flue gas sampling of water-soluble components such as HCl and the like. The application number is 201822207383.6, chinese utility model patent that the publication date is 20191018 discloses a mercury's sampling device in high temperature flue gas, this sampling device designs into the structure that the diameter reduces gradually with the sampling probe front portion, gaseous entering behind this structure because the space grow suddenly, gaseous inflation suddenly for the high temperature flue gas quench, but the cooling rate of this method uncontrollable high temperature flue gas very easily leads to the flue gas cooling not enough to damage check out test set or the partial composition takes place the condensation after the excessive cooling.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high temperature flue gas sampling device to sample flue gas high temperature probably leads to detecting instrument to damage among the solution prior art, high temperature flue gas cooling rate uncontrollable and leads to the problem of partial flue gas composition condensation.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a high-temperature flue gas sampling device, which comprises a sampling probe, a sampling tube, a first temperature sensor, an automatic temperature control and cooling device and a second temperature sensor, wherein the first temperature sensor, the automatic temperature control and cooling device and the second temperature sensor are sequentially arranged along the axial length direction of the outer side wall of the sampling tube; the sampling probe is detachably connected with the sampling tube, the first temperature sensor is arranged at one end of the sampling tube close to the sampling probe, and the second temperature sensor is arranged at one end of the sampling tube far away from the sampling probe; the automatic temperature control and temperature reduction device is automatically started or stopped according to the signal transmitted by the second temperature sensor.
Furthermore, automatic temperature control heat sink includes electric fan and fin, and fin fixed connection is on the lateral wall of sampling tube, and electric fan sets up on the fin, and electric fan's motor is inverter motor, and electric fan is according to the signal automatic start or the stop of second temperature sensor transmission.
Further, the heat sink is made of a metal material.
Furthermore, the automatic temperature control and temperature reduction device comprises a circulating cooling liquid container, a circulating pump, a circulating cooling liquid radiating assembly and a circulating cooling liquid container which are sequentially communicated through a circulating cooling liquid connecting hose; the circulating cooling liquid heat dissipation assembly is fixedly connected to the outer side wall of the sampling tube; circulating cooling liquid in the circulating cooling liquid container sequentially passes through the circulating pump and the circulating cooling liquid heat dissipation assembly and then returns to the circulating cooling liquid container; and a motor in the circulating pump is a variable frequency motor, and the circulating pump is automatically started or stopped according to a signal transmitted by the second temperature sensor.
Further, the circulating cooling liquid includes water.
Furthermore, the sampling probe is connected with the sampling tube through an internal thread joint.
Furthermore, sealing gaskets are respectively arranged between the sampling probe and the internal thread joint and between the sampling tube and the internal thread joint.
Furthermore, the temperature range monitored by the first temperature sensor is 500-1200 ℃, and the temperature range monitored by the second temperature sensor is 180-200 ℃.
Furthermore, the sampling probe is made of ceramic materials, and the sampling tube is made of metal materials.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a high temperature flue gas sampling device, automatic temperature control heat sink start or stop according to the signal of second temperature sensor transmission, and second temperature sensor is as the feedback of automatic temperature control heat sink, realizes the regulation and the control to the flue gas temperature, guarantees that the flue gas temperature can not be too high and damage detecting instrument, guarantees simultaneously that the flue gas temperature can not be too low and take place the condensation, has guaranteed the accuracy and the reliability of testing result;
the sampling probe is made of ceramic materials, can be in a high-temperature environment of more than 1000 ℃ for a long time, cannot be softened and deformed, and cannot be subjected to chemical reaction with high-temperature flue gas;
connect through female adapter between sampling probe and the sampling tube, can dismantle between sampling probe and the sampling tube, be convenient for transportation, save and the change in the use.
Drawings
Fig. 1 is a schematic structural diagram of a high-temperature flue gas sampling device provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a high-temperature flue gas sampling device provided in embodiment 2 of the present invention.
In the figure: 1-sampling probe, 2-sampling tube, 3-first temperature sensor, 4-second temperature sensor, 5-electric fan, 6-radiating fin, 7-circulating cooling liquid connecting hose, 8-circulating cooling liquid container, 9-circulating pump, 10-circulating cooling liquid radiating component and 11-internal thread joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
as shown in fig. 1, the high temperature flue gas sampling device provided in embodiment 1 of the present invention comprises a sampling probe 1, a sampling tube 2, and a first temperature sensor 3, an automatic temperature control and cooling device, and a second temperature sensor 4 sequentially arranged along the axial length direction of the outer side wall of the sampling tube 2; the sampling probe 1 is detachably connected with the sampling tube 2, the first temperature sensor 3 is arranged at one end of the sampling tube 2 close to the sampling probe 1, and the second temperature sensor 4 is arranged at one end of the sampling tube 2 far away from the sampling probe 1; the automatic temperature control and temperature reduction device is automatically started or stopped according to the signal transmitted by the second temperature sensor 4.
Automatic accuse temperature heat sink includes electric fan 5 and fin 6, fin 6 fixed connection is on the lateral wall of sampling tube 2, a heat transfer area for increasing sampling tube 2, electric fan 5 sets up on fin 6, electric fan 5's motor is inverter motor, electric fan 5 is automatic start or stop according to the signal of second temperature sensor 4 transmission, second temperature sensor 4 monitors the flue gas temperature in sampling tube 2 and sets for the difference of temperature and is regarded as electric fan 5's feedforward, the frequency of motor in the control electric fan 5, the temperature difference is big more, the frequency of motor in electric fan 5 is higher more, electric fan 5 rotates faster, when second temperature sensor 4 monitors the flue gas temperature in sampling tube 2 and reaches the settlement temperature, electric fan 5 stops working.
Connect through female adapter 11 between sampling probe 1 and the sampling tube 2, can dismantle between sampling probe 1 and the sampling tube 2, be convenient for transportation, save and change in the use.
And sealing gaskets are respectively arranged between the sampling probe 1 and the internal thread joint 11 and between the sampling tube 2 and the internal thread joint 11, so that the connecting part is sealed.
The temperature range monitored by the first temperature sensor 3 is 500-1200 ℃, and the temperature range monitored by the second temperature sensor 4 is 180-200 ℃.
The sampling probe 1 is made of ceramic materials, the ceramic sampling probe 1 has the characteristics of high temperature resistance and stable chemical structure, the problems that high-temperature smoke in a hearth is difficult to sample and continuous sampling cannot be carried out for a long time are solved, the sampling tube 2 is made of metal materials, and the radiating fins 6 are made of metal materials.
Adopt the utility model discloses a device can be according to the composition of flue gas in sampling process, nimble control and regulation cooling rate guarantee that the flue gas temperature can not be too high and damage detecting instrument, guarantee simultaneously that the flue gas temperature can not cross lowly and take place the condensation, ensured testing result's accuracy and reliability.
Example 2:
as shown in fig. 2, the high temperature flue gas sampling device provided in embodiment 2 of the present invention comprises a sampling probe 1, a sampling tube 2, and a first temperature sensor 3, an automatic temperature control and cooling device, and a second temperature sensor 4 sequentially arranged along the axial length direction of the outer side wall of the sampling tube 2; the sampling probe 1 is detachably connected with the sampling tube 2, the first temperature sensor 3 is arranged at one end of the sampling tube 2 close to the sampling probe 1, and the second temperature sensor 4 is arranged at one end of the sampling tube 2 far away from the sampling probe 1; the automatic temperature control and temperature reduction device is automatically started or stopped according to the signal transmitted by the second temperature sensor 4.
The automatic temperature control and temperature reduction device comprises a circulating cooling liquid container 8, a circulating pump 9, a circulating cooling liquid radiating assembly 10 and a circulating cooling liquid container 8 which are sequentially communicated through a circulating cooling liquid connecting hose 7; the circulating cooling liquid heat dissipation assembly 10 is fixedly connected to the outer side wall of the sampling tube 2; circulating cooling liquid in the circulating cooling liquid container 8 sequentially passes through the circulating pump 9 and the circulating cooling liquid heat dissipation assembly 10 and then returns to the circulating cooling liquid container 8; the motor in the circulating pump 9 is a variable frequency motor, the circulating pump 9 is automatically started or stopped according to a signal transmitted by the second temperature sensor 4, the second temperature sensor 4 monitors the difference value between the temperature of the flue gas in the sampling pipe 2 and the set temperature to be used as the feedforward of the circulating pump 9, the frequency of the motor in the circulating pump 9 is controlled, the larger the temperature difference value is, the higher the frequency of the motor in the circulating pump 9 is, the faster the circulating pump 9 rotates, and when the second temperature sensor 4 monitors that the temperature of the flue gas in the sampling pipe 2 reaches the set temperature, the circulating pump 9 stops working.
The circulating cooling liquid comprises water.
The sampling probe 1 is connected with the sampling tube 2 through an internal thread joint 11.
And sealing gaskets are respectively arranged between the sampling probe 1 and the internal thread joint 11 and between the sampling tube 2 and the internal thread joint 11.
The temperature range monitored by the first temperature sensor 3 is 500-1200 ℃, and the temperature range monitored by the second temperature sensor 4 is 180-200 ℃.
The sampling probe 1 is a sampling probe made of a ceramic material, and the sampling tube 2 is a sampling tube made of a metal material.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a high temperature flue gas sampling device which characterized in that: the device comprises a sampling probe (1), a sampling tube (2), and a first temperature sensor (3), an automatic temperature control and cooling device and a second temperature sensor (4) which are sequentially arranged along the axial length direction of the outer side wall of the sampling tube (2); the sampling probe (1) is detachably connected with the sampling tube (2), the first temperature sensor (3) is arranged at one end, close to the sampling probe (1), of the sampling tube (2), and the second temperature sensor (4) is arranged at one end, far away from the sampling probe (1), of the sampling tube (2); the automatic temperature control and temperature reduction device is automatically started or stopped according to the signal transmitted by the second temperature sensor (4).
2. The high temperature flue gas sampling device of claim 1, wherein: automatic accuse temperature heat sink includes electric fan (5) and fin (6), fin (6) fixed connection is on the lateral wall of sampling tube (2), electric fan (5) set up on fin (6), the motor of electric fan (5) is inverter motor, electric fan (5) are according to the signal automatic start or the stop of second temperature sensor (4) transmission.
3. The high temperature flue gas sampling device of claim 2, wherein: the radiating fin (6) is made of metal materials.
4. The high temperature flue gas sampling device of claim 1, wherein: the automatic temperature control and temperature reduction device comprises a circulating cooling liquid container (8), a circulating pump (9), a circulating cooling liquid heat dissipation assembly (10) and a circulating cooling liquid container (8) which are sequentially communicated through a circulating cooling liquid connecting hose (7); the circulating cooling liquid heat dissipation assembly (10) is fixedly connected to the outer side wall of the sampling tube (2); circulating cooling liquid in the circulating cooling liquid container (8) sequentially passes through the circulating pump (9) and the circulating cooling liquid heat dissipation assembly (10) and then returns to the circulating cooling liquid container (8); the motor in the circulating pump (9) is a variable frequency motor, and the circulating pump (9) is automatically started or stopped according to a signal transmitted by the second temperature sensor (4).
5. The high temperature flue gas sampling device of claim 4, wherein: the circulating cooling liquid comprises water.
6. The high temperature flue gas sampling device of claim 1, wherein: the sampling probe (1) is connected with the sampling tube (2) through an internal thread joint (11).
7. The high temperature flue gas sampling device of claim 6, wherein: and sealing gaskets are respectively arranged between the sampling probe (1) and the internal thread joint (11) and between the sampling tube (2) and the internal thread joint (11).
8. The high temperature flue gas sampling device of claim 1, wherein: the temperature range monitored by the first temperature sensor (3) is 500-1200 ℃, and the temperature range monitored by the second temperature sensor (4) is 180-200 ℃.
9. The high temperature flue gas sampling device of claim 1, wherein: sampling probe (1) is the sampling probe who makes by ceramic material, sampling tube (2) are the sampling tube of making by metal material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021334549.1U CN212722258U (en) | 2020-07-09 | 2020-07-09 | High-temperature flue gas sampling device |
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| CN202021334549.1U CN212722258U (en) | 2020-07-09 | 2020-07-09 | High-temperature flue gas sampling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781035A (en) * | 2020-07-09 | 2020-10-16 | 江苏方天电力技术有限公司 | High-temperature flue gas sampling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781035A (en) * | 2020-07-09 | 2020-10-16 | 江苏方天电力技术有限公司 | High-temperature flue gas sampling device |
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