Flue gas monitoring wet flue gas water content on-line monitoring device

Abstract

The utility model relates to the field of flue gas water content monitoring, in particular to a wet flue gas water content on-line monitoring device for flue gas monitoring. The on-line monitoring device for the moisture content of the wet flue gas comprises a semiconductor condensation mechanism which comprises a shell with a heat conduction cavity, a condensation pipeline arranged in the heat conduction cavity and a semiconductor condensation sheet arranged on the outer side of the circumferential direction of the shell; the heat conduction cavity is filled with heat conduction liquid; the semiconductor condensation sheet is connected with a cooling fin which is fixedly connected with the shell; the condensation pipeline is provided with a water outlet for discharging condensate water; and the water cooling tank is communicated with the water outlet, and a water volume detection device for detecting the water volume of the condensate water is arranged in the water cooling tank. According to the flue gas monitoring wet flue gas water content on-line monitoring device, the semiconductor condensation mechanism is adopted, the structure is simple, use and maintenance are convenient, the occupied space of the condensation mechanism can be effectively reduced, and the refrigeration speed is increased.

Description

Technical Field

[0001] The utility model relates to the field of smoke water content monitoring, in particular to an online smoke water content monitoring device. Background Art

[0002] Continuous flue gas sampling devices require data authenticity, continuity, and integrity, with minimal interruptions during sampling. Moisture content in wet flue gas is a key parameter for ensuring accurate and reliable analysis results during continuous flue gas sampling. During operation, wet flue gas moisture content data must be real-time and continuous, and cannot be manually input.

[0003] Existing methods for online monitoring of moisture content in wet flue gas include condensation (gravimetric and volumetric), capacitance, and dry and wet oxygen methods. The condensation method involves heating the extracted flue gas to a certain temperature and passing it through a compressor-cooled condenser to condense the moisture in the flue gas. The flue gas humidity is then calculated based on the volume or weight of the condensed water and the extracted gas. However, in actual use, compressor-cooled systems have the disadvantages of being bulky and having high manufacturing and maintenance costs.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Summary of the Invention

[0005] In order to improve or solve the technical problems of large compressor refrigeration volume and high manufacturing and maintenance costs in the prior art, the present invention provides an online monitoring device for wet flue gas moisture content by condensing wet flue gas through a semiconductor condensation mechanism. The online monitoring device for wet flue gas moisture content comprises: a semiconductor condensation mechanism, comprising a shell having a heat conduction cavity, a condensation pipe arranged in the heat conduction cavity, and a semiconductor condensation sheet arranged on the circumferential outer side of the shell; the heat conduction cavity is filled with heat conduction liquid; the semiconductor condensation sheet is connected to a heat sink that is fixedly connected to the shell; the condensation pipe has an air inlet for inputting wet flue gas, an exhaust port for discharging condensed wet flue gas, and a drain port for discharging condensed water; a water cooling tank is connected to the drain port, and a water amount detection device for detecting the amount of condensed water is arranged in the water cooling tank.

[0006] The utility model discloses an online device for monitoring the moisture content of wet flue gas, comprising a semiconductor condensation mechanism and a water-cooling tank. The semiconductor condensation mechanism condenses the heated wet flue gas to form condensed water. The water-cooling tank is connected to the semiconductor condensation mechanism and is used to store the condensed water and calculate the amount of the condensed water using a water quantity detection device. Furthermore, the moisture content of the wet flue gas is calculated based on the amount of condensed water and the amount of wet flue gas introduced. Compared to compressor refrigeration, semiconductor condensers have the advantages of being smaller and having a faster cooling speed. The semiconductor condensation mechanism comprises a housing, a condensation pipe, and a semiconductor condensation plate. A heat-conducting cavity is formed in the housing, and the heat-conducting cavity is filled with a heat-conducting liquid. The condensation pipe is immersed in the heat-conducting liquid, which increases the contact area between the condensation pipe and the heat-conducting liquid and facilitates the condensation of the wet flue gas. Through the above-mentioned arrangement, the utility model discloses an online device for monitoring the moisture content of wet flue gas, which utilizes a semiconductor condensation mechanism, has a simple structure, is easy to use and maintain, and can effectively reduce the space occupied by the condensation mechanism and increase the cooling speed.

[0007] Furthermore, a silicone grease layer is applied between the semiconductor condensing sheet and the shell.

[0008] Furthermore, heat-insulating foam is provided on the circumferential outer side of the shell.

[0009] Furthermore, bolt holes are opened on the shell, and the shell and the heat sink are sealed and fixedly connected by bolts and sealing rings.

[0010] Furthermore, the condensation pipe is detachably connected to the shell.

[0011] Furthermore, a first thread is provided on the inner circumferential wall of the air inlet; an inner sleeve connecting the air inlet and the shell is arranged between the air inlet and the shell, and the inner sleeve includes a limiting portion abutting against the outer wall of the shell and a connecting tube connected to the air inlet, and a second thread matching the first thread is provided on the outer circumferential wall of the connecting tube.

[0012] Furthermore, an external thread is provided on the outer peripheral wall of the drain outlet; an outer sleeve connecting the drain outlet and the shell is arranged between the two, and the outer sleeve includes an abutting portion abutting against the outer wall of the shell and a mounting tube connected to the drain outlet, and an internal thread matching the external thread is provided on the inner peripheral wall of the mounting tube.

[0013] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) By adopting a semiconductor condensation mechanism, the structure is simple, easy to use and maintain, and can effectively reduce the space occupied by the condensation mechanism and increase the cooling speed;

[0015] (2) By setting up a silicone grease layer and thermal insulation foam, the silicone grease layer can evenly transfer the temperature of the semiconductor condenser to the shell; the thermal insulation foam can prevent the heat transfer liquid in the shell from exchanging heat with the outside world, thereby reducing the energy consumption of the semiconductor condensation mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0017] Figure 1 It is a schematic diagram of an embodiment of an on-line monitoring device for monitoring moisture content in wet flue gas according to the utility model.

[0018] List of reference numerals: 1. Shell; 11. Insulating foam; 12. Bolt; 2. Condensation duct; 21. Air inlet; 22. Exhaust port; 23. Drain port; 24. Inner sleeve; 241. Limiting portion; 242. Connecting tube; 25. Outer sleeve; 251. Abutting portion; 252. Mounting tube; 3. Semiconductor condensing sheet; 31. Heat sink. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting the utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance.

[0021] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "set," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] In order to improve or solve the technical problems of large compressor refrigeration volume and high manufacturing and maintenance costs in the prior art, the utility model provides an online monitoring device for wet flue gas moisture content by condensing wet flue gas through a semiconductor condensation mechanism. The online monitoring device for wet flue gas moisture content comprises: a semiconductor condensation mechanism, comprising a shell 1 having a heat conduction cavity, a condensation pipe 2 arranged in the heat conduction cavity, and a semiconductor condensation plate 3 arranged on the circumferential outer side of the shell 1; the heat conduction cavity is filled with heat conduction fluid; the semiconductor condensation plate 3 is connected to a heat sink 31 that is fixedly connected to the shell 1; the condensation pipe 2 has an air inlet 21 for inputting wet flue gas, an exhaust port 22 for discharging condensed wet flue gas, and a drain port 23 for discharging condensed water; a water cooling tank is connected to the drain port 23, and a water amount detection device for detecting the amount of condensed water is arranged in the water cooling tank.

[0023] Figure 1 This is a schematic diagram of an embodiment of an on-line monitoring device for monitoring the moisture content of wet flue gas according to the utility model. Figure 1 As shown, in one or more embodiments, the utility model provides an online monitoring device for monitoring the moisture content of wet flue gas, including a semiconductor condenser mechanism, a water cooling tank and a water quantity detection device.

[0024] Continue to see Figure 1 , the wet flue gas is transported to the semiconductor condensation mechanism after passing through the processes of gas extraction, dust filtration, heat tracing and transportation. In one or more embodiments, the semiconductor condensation mechanism includes a shell 1, a condensation pipe 2 and a semiconductor condensation sheet 3. Specifically, the shell 1 is roughly in the shape of a hollow square cylinder, and a heat conduction cavity is formed inside it. Two through holes are provided on the top wall of the shell 1, and a through hole is provided on the bottom wall of the shell 1 for installing the condensation pipe 2. Furthermore, the shell 1 is made of copper, which has good thermal conductivity and can be cooled more conveniently. Furthermore, the heat conduction cavity is filled with heat conduction liquid. The heat conduction liquid is water. The heat conduction liquid can increase the contact area with the condensation pipe 2, and water is easier to cool than metal. Furthermore, a heat insulating foam 11 is provided on the circumferential outer side of the shell 1. The heat insulating foam 11 can reduce the heat exchange between the heat conduction liquid in the shell 1 and the outside world, thereby reducing the temperature loss in the shell 1. Furthermore, bolt holes are provided on the circumferential wall of the housing 1 , and bolts 12 and sealing rings are arranged in the bolt holes.

[0025] Continue to see Figure 1The condensation duct 2 is removably mounted within the housing 1. In one or more embodiments, the condensation duct 2 has an air inlet 21, an air outlet 22, and a water outlet 23. The air inlet 21 is used to input wet flue gas, the air outlet 22 is used to discharge the condensed wet flue gas, and the water outlet 23 is used to discharge condensed water. Specifically, the air inlet 21 and the air outlet 22 correspond to two through-holes on the top wall of the housing 1, respectively, and the water outlet 23 corresponds to a through-hole on the bottom wall of the housing 1. Furthermore, a first thread is formed on the inner circumferential wall of the air inlet 21. An inner sleeve 24 is disposed between the air inlet 21 and the housing 1, connecting the two. The inner sleeve 24 includes a stopper 241 and a connecting sleeve 242 connected to the air inlet 21. Specifically, the connecting sleeve 242 is generally cylindrical in shape, and a second thread is formed on the outer circumferential wall of the connecting sleeve 242 to mate with the first thread. The stopper 241 is generally annular in shape and abuts the top wall of the housing 1. Furthermore, a sealing ring is disposed between the limiting portion 241 and the housing 1. When the condensing duct 2 is installed, the air inlet 21 is sealed and fixed to the housing 1 by rotating the inner sleeve 24. The exhaust port 22 is also connected to the housing 1 via the inner sleeve 24, which will not be described in detail here. Furthermore, an external thread is provided on the outer circumferential wall of the drain outlet 23. An outer sleeve 25 is disposed between the drain outlet 23 and the housing 1 to connect the two. The outer sleeve 25 includes an abutment portion 251 that abuts against the outer wall of the housing 1 and a mounting sleeve 252 connected to the drain outlet 23. Specifically, the mounting sleeve 252 is roughly cylindrical and has internal threads that match the external threads on its outer circumferential wall. The abutment portion 251 is roughly annular and abuts against the bottom wall of the housing 1. A sealing ring is disposed between the abutment portion 251 and the housing 1. When the condensing duct 2 is installed, the drain outlet 23 is sealed and fixed to the housing 1 by rotating the outer sleeve 25.

[0026] Continue to see Figure 1 , the semiconductor condensing sheet 3 is arranged on the circumferential outer side of the shell 1. Specifically, the semiconductor condensing sheet 3 is attached to the four side walls of the shell 1. Further, two semiconductor condensing sheets 3 are arranged on each side wall. Alternatively, the semiconductor condensing sheet 3 is arranged only on the two opposite side walls. Further, a silicone grease layer is coated between the semiconductor condensing sheet 3 and the shell 1. Further, a heat sink 31 is connected to the side of the semiconductor condensing sheet 3 away from the shell 1. The heat sink 31 is fixedly connected to the shell 1. Specifically, a bolt hole matching the bolt 12 is provided on the heat sink 31. The heat sink 31 is sealed and fixedly connected by the bolt 12 and the sealing ring. Further, the water cooling tank is connected to the drain outlet 23 for accommodating the condensed water after condensation. The water quantity measuring device is arranged in the water cooling tank. Exemplarily, the water quantity measuring device can be a weight weighing device, which detects the weight of the condensed water by a weight sensor, that is, weight weighing. Alternatively, the water quantity measuring device may be a volumetric weighing device, which detects the volume of the condensed water by means of a liquid level sensor, namely, volumetric weighing.

[0027] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is clearly not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. An online monitoring device for wet flue gas moisture content, characterized in that: include: A semiconductor condensation mechanism comprises a housing (1) having a heat-conducting cavity, a condensation pipe (2) arranged in the heat-conducting cavity, and a semiconductor condensation sheet (3) arranged on the circumferential outer side of the housing (1); the heat-conducting cavity is filled with a heat-conducting liquid; the semiconductor condensation sheet (3) is connected to a heat sink (31) fixedly connected to the housing (1); the condensation pipe (2) has an air inlet (21) for inputting wet flue gas, an exhaust port (22) for discharging condensed wet flue gas, and a drain port (23) for discharging condensed water; The water cooling tank is in communication with the drain port (23), and a water quantity detection device for detecting the quantity of condensed water is arranged in the water cooling tank.

2. The on-line monitoring device for wet flue gas moisture content according to claim 1 is characterized in that: A silicone grease layer is applied between the semiconductor condensation sheet (3) and the shell (1).

3. The on-line monitoring device for wet flue gas moisture content according to claim 1 is characterized in that: Heat-insulating foam (11) is sleeved on the circumferential outer side of the shell (1).

4. The on-line monitoring device for wet flue gas moisture content according to claim 1 is characterized in that: Bolt holes are provided on the housing (1), and the housing (1) and the heat sink (31) are sealed and fixedly connected via bolts (12) and a sealing ring.

5. The on-line monitoring device for wet flue gas moisture content according to claim 1 is characterized in that: The condensation pipe (2) and the shell (1) form a detachable connection.

6. The on-line monitoring device for wet flue gas moisture content according to claim 5, characterized in that: A first thread is provided on the inner peripheral wall of the air inlet (21); an inner sleeve (24) is arranged between the air inlet (21) and the shell (1) to connect the two, the inner sleeve (24) comprising a limiting portion (241) abutting against the outer wall of the shell (1) and a connecting tube (242) connected to the air inlet (21); a second thread matching the first thread is provided on the outer peripheral wall of the connecting tube (242).

7. The on-line monitoring device for wet flue gas moisture content according to claim 5, characterized in that: An external thread is provided on the outer peripheral wall of the drain outlet (23); an outer sleeve (25) is arranged between the drain outlet (23) and the shell (1) to connect the two, and the outer sleeve (25) includes an abutting portion (251) abutting against the outer wall of the shell (1) and a mounting sleeve (252) connected to the drain outlet (23); an internal thread matching the external thread is provided on the inner peripheral wall of the mounting sleeve (252).

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