CN215865988U - Sampling device for detecting high-temperature flue gas by NOX sensor - Google Patents
Sampling device for detecting high-temperature flue gas by NOX sensor Download PDFInfo
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- CN215865988U CN215865988U CN202121990154.1U CN202121990154U CN215865988U CN 215865988 U CN215865988 U CN 215865988U CN 202121990154 U CN202121990154 U CN 202121990154U CN 215865988 U CN215865988 U CN 215865988U
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Abstract
The utility model discloses a sampling device for detecting high-temperature flue gas by an NOX sensor, which comprises the NOX sensor, wherein a pipe is arranged at one end of the NOX sensor, a sampling device mounting seat is arranged at one end of the pipe, a sensor probe is arranged at one end of the sensor seat, a detector is arranged in the pipe, a plurality of radiating fins are fixedly connected to two sides of the pipe, a flange is arranged at one end of the sampling device mounting seat, a sampling pipe flange is arranged at the upper end of the flange, a mounting seat flange is arranged at the lower end of the flange, a smoke exhaust channel is arranged at the lower end of the sampling device mounting seat, and a sampling pipe and a static pressure pipe are arranged in the pipe. According to the utility model, the sampling device and the flange or the quick connector are arranged on the smoke exhaust pipeline, so that heat conduction and heat radiation are reduced, and the sensor is protected.
Description
Technical Field
The utility model relates to the field of SCR denitration industry of tail gas of an internal combustion engine in the field of flue gas denitration, in particular to a sampling device for detecting high-temperature flue gas by using an NOX sensor.
Background
At present, in the internal combustion engine tail gas SCR denitration industry in the field of domestic and international flue gas denitration, an electrochemical principle sensor represented by Germany continental brand and the like is commonly used as a sensor for detecting NOX concentration and oxygen content. The sensor is widely applied to SCR denitration equipment of an internal combustion engine, mainly a diesel engine with lower exhaust gas temperature (generally not exceeding 450 ℃) in the past years, and in recent years, along with the wide application of novel energy and the improvement of environmental protection standards, the application of a gas internal combustion engine taking natural gas as a representative fuel and an SCR tail gas denitration system is rapidly developed. The gas internal combustion engine is characterized in that the exhaust gas temperature is higher than 500 ℃ and 630 ℃.
The traditional installation mode of the NOx sensor is directly installed on a smoke exhaust pipeline, and in practical application, the surface temperature of the smoke exhaust pipeline is high, so that the sensor is easily damaged due to overhigh temperature through heat radiation and heat conduction, and the stable operation of equipment is influenced due to the fault of a denitration system.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides a sampling device for detecting high-temperature flue gas by using an NOX sensor.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a NOx sensor detects sampling device of high temperature flue gas, includes the NOx sensor, the one end of NOx sensor is provided with the pipe, the one end of pipe is provided with the sampling device mount pad, the one end of pipe is provided with the sensor seat, the one end of sensor seat is provided with the sensor probe, the inside of pipe is provided with the detector, the both sides fixedly connected with a plurality of fin of pipe, the one end of sampling device mount pad is provided with the flange, the upper end of flange is provided with the sampling pipe flange, the lower extreme of flange is provided with the mount pad flange, the lower extreme of sampling device mount pad is provided with smoke exhaust passage, the inside of pipe is provided with sampling tube and static pressure pipe, the other end of sampling tube and static pressure pipe passes smoke exhaust passage and extends to the other end.
As a further description of the above technical solution:
one end of the sensor seat is provided with inch pipe threads.
As a further description of the above technical solution:
one end of the pipe is provided with a pipe base.
As a further description of the above technical solution:
one end of the sampling tube is provided with a dynamic pressure tube.
As a further description of the above technical solution:
one side of the sampling pipe flange is provided with a plurality of round holes, and the middle part of the sampling pipe flange is provided with two channels.
As a further description of the above technical solution:
the sampling tube is attached to the side wall of the static pressure tube.
As a further description of the above technical solution:
and a nut is arranged outside the NOx sensor.
As a further description of the above technical solution:
one end of the NOX sensor is intermeshed with the tube.
The utility model has the following beneficial effects:
1. compared with the prior art, the sampling device for detecting the high-temperature flue gas by the NOX sensor has the advantages that the sensor is not directly installed on a flue gas pipeline and is installed on a flue gas exhaust pipeline through the sampling device and a flange or a quick joint, so that heat conduction and heat radiation are reduced, and the sensor is protected.
2. Compared with the prior art, the sampling device for detecting the high-temperature flue gas by the NOX sensor is characterized in that the sampling chamber is additionally provided with the radiating fins, so that the flue gas is sampled to be radiated and cooled, and the sensor is protected.
3. Compared with the prior art, the sampling device for detecting the high-temperature flue gas by the NOX sensor realizes sampling detection by setting dynamic pressure and static pressure difference on the principle of generating gas flow sampling, and the static pressure sampling tube is designed into a shorter form, so that condensed water is convenient to discharge.
Drawings
FIG. 1 is a front view of a sampling device for detecting high-temperature flue gas by using a NOX sensor according to the present invention;
FIG. 2 is a schematic diagram of an NOX sensor of a sampling device for detecting high-temperature flue gas by the NOX sensor according to the present invention;
FIG. 3 is a partial schematic view of a sampling device for detecting high-temperature flue gas by using an NOX sensor according to the present invention;
FIG. 4 is a schematic view of a tube base of a sampling device for detecting high-temperature flue gas by using an NOX sensor according to the present invention;
FIG. 5 is a schematic view of a flange of a sampling pipe of the sampling device for detecting high-temperature flue gas by using the NOX sensor according to the present invention;
fig. 6 is a schematic view of a mounting flange of a sampling device for detecting high-temperature flue gas by using an NOX sensor according to the present invention.
Illustration of the drawings:
1. an NOX sensor; 2. a sensor seat; 3. a sensor probe; 4. a detector; 5. a dynamic pressure tube; 6. a heat sink; 7. a flange; 8. a static pressure tube; 9. a smoke evacuation channel; 10. a sampling device mount; 11. pipe thread sizing; 12. a tube base; 13. a sampling tube; 14. a sampling pipe flange; 15. a mounting base flange; 16. a tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-6, one embodiment of the present invention is provided: a sampling device for detecting high-temperature smoke by an NOX sensor comprises the NOX sensor 1, wherein one end of the NOX sensor 1 is provided with a pipe 16, a sampling pipe 13 and a static pressure pipe 8 are convenient to arrange, one end of the pipe 16 is provided with a sampling device mounting seat 10, the sampling pipe 13 is convenient to fix, one end of the pipe 16 is provided with a sensor seat 2, the NOX sensor 1 is convenient to install, one end of the sensor seat 2 is provided with a sensor probe 3, a detector 4 is arranged inside the pipe 16 and is convenient to detect smoke entering the pipe 16, a plurality of radiating fins 6 are fixedly connected to two sides of the pipe 16 and are convenient to radiate heat, the device is protected, the service life is prolonged, one end of the sampling device mounting seat 10 is provided with a flange 7 which is convenient to connect the sampling device mounting seat 10 with the pipe 16, the upper end of the flange 7 is provided with a sampling pipe flange 14, and the lower end of the flange 7 is provided with a mounting seat flange 15, the lower end of the sampling device mounting seat 10 is provided with a smoke exhaust channel 9 for discharging smoke conveniently, a sampling pipe 13 and a static pressure pipe 8 are arranged inside the pipe 16, and the other ends of the sampling pipe 13 and the static pressure pipe 8 penetrate through the smoke exhaust channel 9 and extend to the other end.
One end of the sensor seat 2 is provided with inch pipe threads 11, the NOX sensor 1 is conveniently connected with a pipe 16, one end of the pipe 16 is provided with a pipe base 12, one end of the sampling pipe 13 is provided with a dynamic pressure pipe 5, one side of the sampling pipe flange 14 is provided with a plurality of round holes, the middle part of the sampling pipe flange 14 is provided with two channels, the sampling pipe 13 is mutually attached to the side wall of the static pressure pipe 8, the outside of the NOX sensor 1 is provided with a nut, the NOX sensor 1 is conveniently screwed to prevent looseness in use, and one end of the NOX sensor 1 is meshed with the pipe 16.
The working principle is as follows: when the device is used, the sampling device is vertically arranged and fixed on a smoke exhaust channel 9 through a flange 7 and a sampling device mounting seat 10, the front ends of a dynamic pressure tube 5 and a static pressure tube 8 are inserted into the smoke exhaust channel 9 to be detected, the rear end of the dynamic pressure tube and the static pressure tube is connected with a detection chamber, a radiating fin 6 is arranged outside the detection chamber, and an NOX sensor 1 sensor seat 2 is arranged at the rear end of the detection chamber. The principle of the sampling device is that the characteristic that the flow rate of the smoke of the internal combustion engine in the smoke exhaust channel 9 is high (generally between 15 and 30 m/S) is utilized, the sampling device is provided with the dynamic pressure tube 5 and the static pressure tube 8, the detection chamber of the radiating fin 6 is connected behind the dynamic pressure tube 5 and the static pressure tube 8, the two sampling tubes 13 are utilized to generate pressure difference, the gas in the detection chamber can continuously flow, and equivalently, a part of the gas is shunted from the smoke exhaust tube, and the sampling detection of the smoke is realized. Meanwhile, when the smoke flows in the detection chamber, the heat is dissipated through the radiating fins 6, so that the smoke temperature is reduced, and the NOX sensor 1 is protected from being damaged due to overhigh temperature of the detected smoke. And the NOX sensor 1 is arranged on a sensor seat 2 at the tail end of the sampling device, and the heat conduction and the heat radiation are reduced by 9 degrees of the smoke exhaust channel far away from the high temperature, so that the temperature at the sensor is reduced by 300-400 ℃. Thereby the sensor has been protected, can not lead to the damage of sensor high temperature because of heat conduction and heat radiation.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (8)
1. The utility model provides a sampling device that NOX sensor detected high temperature flue gas, includes NOX sensor (1), its characterized in that: one end of the NOX sensor (1) is provided with a pipe (16), one end of the pipe (16) is provided with a sampling device mounting seat (10), one end of the pipe (16) is provided with a sensor seat (2), one end of the sensor seat (2) is provided with a sensor probe (3), a detector (4) is arranged inside the pipe (16), two sides of the pipe (16) are fixedly connected with a plurality of radiating fins (6), one end of the sampling device mounting seat (10) is provided with a flange (7), the upper end of the flange (7) is provided with a sampling pipe flange (14), the lower end of the flange (7) is provided with a mounting seat flange (15), the lower end of the sampling device mounting seat (10) is provided with a smoke exhaust passage (9), the inside of the pipe (16) is provided with a sampling pipe (13) and a static pressure pipe (8), and the other ends of the sampling pipe (13) and the static pressure pipe (8) penetrate through the smoke exhaust passage (9) and extend to the other end of the other static pressure pipe (8) And (4) an end.
2. The sampling device for detecting the high-temperature flue gas by the NOX sensor according to claim 1, is characterized in that: one end of the sensor seat (2) is provided with inch pipe threads (11).
3. The sampling device for detecting the high-temperature flue gas by the NOX sensor according to claim 1, is characterized in that: one end of the pipe (16) is provided with a pipe base (12).
4. The sampling device for detecting the high-temperature flue gas by the NOX sensor according to claim 1, is characterized in that: one end of the sampling tube (13) is provided with a dynamic pressure tube (5).
5. The sampling device for detecting the high-temperature flue gas by the NOX sensor according to claim 1, is characterized in that: one side of the sampling pipe flange (14) is provided with a plurality of round holes, and the middle part of the sampling pipe flange (14) is provided with two channels.
6. The sampling device for detecting the high-temperature flue gas by the NOX sensor according to claim 1, is characterized in that: the sampling tube (13) is mutually attached to the side wall of the static pressure tube (8).
7. The sampling device for detecting the high-temperature flue gas by the NOX sensor according to claim 1, is characterized in that: and a nut is arranged outside the NOX sensor (1).
8. The sampling device for detecting the high-temperature flue gas by the NOX sensor according to claim 1, is characterized in that: one end of the NOx sensor (1) is meshed with the pipe (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121990154.1U CN215865988U (en) | 2021-08-23 | 2021-08-23 | Sampling device for detecting high-temperature flue gas by NOX sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121990154.1U CN215865988U (en) | 2021-08-23 | 2021-08-23 | Sampling device for detecting high-temperature flue gas by NOX sensor |
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| CN215865988U true CN215865988U (en) | 2022-02-18 |
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| CN202121990154.1U Active CN215865988U (en) | 2021-08-23 | 2021-08-23 | Sampling device for detecting high-temperature flue gas by NOX sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115144231A (en) * | 2022-06-21 | 2022-10-04 | 浙江兴核智拓科技有限公司 | Urea direct injection partition measurement and control system suitable for denitration device of gas turbine waste heat boiler |
-
2021
- 2021-08-23 CN CN202121990154.1U patent/CN215865988U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115144231A (en) * | 2022-06-21 | 2022-10-04 | 浙江兴核智拓科技有限公司 | Urea direct injection partition measurement and control system suitable for denitration device of gas turbine waste heat boiler |
| CN115144231B (en) * | 2022-06-21 | 2023-04-07 | 浙江兴核智拓科技有限公司 | Urea direct injection partition measurement and control system suitable for denitration device of gas turbine waste heat boiler |
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