Flue gas pretreatment device for flue gas continuous emission detection

Abstract

The utility model discloses a flue gas pretreatment device for flue gas continuous emission detection, which comprises a ducted fan, external connecting rings, an upper connecting plate, an external connecting plate and a gas guide pipe, the external connecting rings are symmetrically welded outside shells at two ends of the ducted fan, the upper connecting plate is welded on the surface of the outer ring wall of each external connecting ring, and the external connecting plates are welded on the surface of the outer ring wall of each external connecting ring. By arranging the pretreatment device capable of communicating an existing flue gas discharging and filtering pipeline with a detection pipeline of a gas detector, inner guide pipes installed at the two ends of a duct fan of the pretreatment device can be connected with the existing flue gas discharging and filtering pipeline and the detection pipeline of the gas detector in a screwed mode through threaded ring walls for communication; the flue gas is subjected to condensation treatment at the inner guide pipe and then is conveyed to the detection pipeline of the gas detector for continuous detection, and when the flue gas subjected to condensation drainage enters the gas detector for emission detection, the gas detector is not easily influenced by water vapor, so that flue gas drainage pretreatment during continuous emission detection of the flue gas is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas pretreatment, in particular to a flue gas pretreatment device for continuous flue gas emission detection. Background Art

[0002] Harmful gases must be monitored in real time to ensure that the emission values of each enterprise meet the emission standards required by the national environmental protection requirements.

[0003] At present, the gas concentration emission value in the flue gas is very small. If the flue gas enters the gas analyzer directly without treatment, the particulate matter and water vapor in the flue gas will also enter the gas analyzer. These particulate matter and water vapor will affect both the life of the analyzer and the measurement results. Although the market uses a two-stage filtration method to pre-treat particulate matter and water vapor, these treatment methods have poor treatment effects on water vapor in the flue gas, so that the pre-treated flue gas will still carry a lot of water vapor into the gas analyzer, making the gas analyzer easily damaged. For this reason, we propose a flue gas pretreatment device for continuous flue gas emission detection. Utility Model Content

[0004] The main purpose of the present utility model is to provide a flue gas pretreatment device for continuous flue gas emission detection, by setting a pretreatment device that can be connected to the existing flue gas exhaust filter pipe and the detection pipe of the gas detector, the inner guide pipes installed at both ends of the duct fan of the pretreatment device can be screwed to the existing flue gas exhaust filter pipe and the detection pipe of the gas detector with a threaded ring wall for connection, the flue gas is condensed at the inner guide pipe and then sent to the detection pipe of the gas detector for continuous detection, when the flue gas after condensation and drainage enters the gas detector for emission detection, the gas detector is not easily affected by water vapor, and there is an outer pipe wall refrigeration structure and an inner pipe cavity cooling pipe at the inner guide pipe, so that the flue gas can be condensed by the low-temperature pipe and the cooling pipe when passing through the inner guide pipe, thereby ensuring the good condensation and discharge of water vapor inside the flue gas, realizing the flue gas drainage pretreatment during continuous flue gas emission detection, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A flue gas pretreatment device for continuous flue gas emission detection, comprising a ducted fan, an outer connecting ring, an upper connecting plate, an outer connecting plate and an air bleed pipe, wherein the outer connecting rings are symmetrically welded to the outer ends of the casing of the ducted fan, and the upper connecting plate is welded to the outer ring wall surface of the outer connecting ring, the upper connecting plate and the outer connecting plate are screwed together with bolts, and the outer connecting plate is welded to the outer pipe wall of the air bleed pipe, the air bleed pipe is inserted into the outer connecting ring, and the inner bleed pipe is welded to the pipe body of the air bleed pipe with a short connecting plate, and the lower pipe surfaces of the inner bleed pipe are welded to each other A drip pipe is connected to the air bleed pipe that passes downward, and inner holes are symmetrically opened on the pipe wall on one side of the air bleed pipe, and an outer hole is opened on the surface of the air bleed pipe outside the inner hole. An outer pipe is welded between the hole walls of the inner hole and the outer hole, and a U-shaped inner pipe is welded between the pipe openings of the outer pipe extending into the inner pipe. A connecting pipe is welded between the vertical pipes of the U-shaped inner pipe, and an upper guide tube is welded on the surface of the long tube body of the connecting pipe. An inner row of holes is opened on the surface of the outer pipe between the air bleed pipe and the inner pipe.

[0007] Furthermore, two groups of short connecting plates are welded between the air duct and the inner duct;

[0008] By adopting the above technical solution, the air duct and the inner duct are welded and fixed with a plurality of short connecting plates.

[0009] Furthermore, the drip pipes are arranged and welded in three groups between the inner guide pipe and the air guide pipe;

[0010] By adopting the above technical solution, there are more drip pipes at the inner guide pipe and the air guide pipe to guide the liquid after the smoke condenses to flow out.

[0011] Furthermore, the upper conduit is arranged and welded in five groups on the surface of the U-shaped inner tube;

[0012] By adopting the above technical solution, there are more upper ducts at the U-shaped inner tube that can contact the flue gas to conduct low temperature.

[0013] Furthermore, the guide tubes are welded in three groups between the vertical tube bodies of the U-shaped inner tube;

[0014] By adopting the above technical solution, there are more connecting pipes at the U-shaped inner tube that can contact the flue gas to conduct low temperature.

[0015] Furthermore, a threaded ring wall is provided in the pipe opening at the other end of the inner lead pipe away from the outer connecting plate;

[0016] By adopting the above technical solution, the inner guide pipes installed at both ends of the ducted fan can be screwed to the existing smoke exhaust filter pipe and the detection pipe of the gas detector through the threaded ring wall to connect them.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The utility model is provided with a pre-treatment device that can connect the existing flue gas exhaust filter pipe and the detection pipe of the gas detector. The inner guide pipes installed at both ends of the duct fan of the pre-treatment device can be screwed with the existing flue gas exhaust filter pipe and the detection pipe of the gas detector through the threaded ring wall to connect them. The flue gas is condensed in the inner guide pipe and then sent to the detection pipe of the gas detector for continuous detection. When the flue gas after condensation and drainage enters the gas detector for emission detection, the gas detector is not easily affected by water vapor.

[0019] In addition, there is an outer tube wall refrigeration structure and an inner tube cavity cooling pipe at the inner guide pipe, so that the flue gas can be condensed by the low-temperature pipe and the cooling pipe when passing through the inner guide pipe, thereby ensuring the good condensation and discharge of water vapor inside the flue gas, and realizing the flue gas drainage pretreatment during continuous flue gas emission detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a flue gas pretreatment device for continuous flue gas emission detection according to the present invention.

[0021] Figure 2 This is an exploded view of a flue gas pretreatment device for continuous flue gas emission detection according to the present invention.

[0022] Figure 3 This is a schematic diagram of the disassembly of the outer pipe, the air duct and the inner duct of a flue gas pretreatment device for continuous flue gas emission detection according to the present invention.

[0023] In the figure: 1. Ducted fan; 2. External connecting ring; 3. Upper connecting plate; 4. External connecting plate; 5. Air duct; 6. Internal duct; 7. Short connecting plate; 8. Drip pipe; 9. Internal duct hole; 10. External duct hole; 11. External pipe; 12. U-shaped internal pipe; 13. Guide pipe; 14. Upper duct; 15. Threaded ring wall; 16. Internal row hole. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1-3As shown, a flue gas pretreatment device for continuous flue gas emission detection includes a ducted fan 1, an outer connecting ring 2, an upper connecting plate 3, an outer connecting plate 4 and an air bleed pipe 5. The outer connecting ring 2 is symmetrically welded to the outer ring wall surface of the outer connecting ring 2 at both ends of the ducted fan 1, and the upper connecting plate 3 is welded to the outer ring wall surface of the outer connecting ring 2. Bolts are screwed between the upper connecting plate 3 and the outer connecting plate 4, and the outer connecting plate 4 is welded to the outer pipe wall of the air bleed pipe 5. The air bleed pipe 5 is inserted into the outer connecting ring 2, and the inner lead pipe 6 is welded to the pipe body of the air bleed pipe 5 with a short connecting plate 7. The lower pipe surfaces of the inner lead pipe 6 are interconnected and welded with downward penetration. A drip pipe 8 is provided out of the air bleed pipe 5, and an inner lead hole 9 is symmetrically provided on the pipe wall on one side of the air bleed pipe 5, and an outer lead hole 10 is provided on the surface of the air bleed pipe 5 outside the inner lead hole 9. An outer tube 11 is welded between the hole walls of the inner lead hole 9 and the outer lead hole 10, and a U-shaped inner tube 12 is welded between the pipe openings of the outer tube 11 extending into the inner lead pipe 6, and a connecting tube 13 is welded between the vertical tubes of the U-shaped inner tube 12, and an upper guide tube 14 is welded on the surface of the long tube body of the connecting tube 13, and an inner row of holes 16 is provided on the surface of the outer tube 11 between the air bleed pipe 5 and the inner lead pipe 6.

[0026] There are two groups of short connecting plates 7 welded between the air duct 5 and the inner duct 6;

[0027] By adopting the above technical solution, the air duct 5 and the inner duct 6 are welded and fixed with a plurality of short connecting plates 7 .

[0028] The drip tubes 8 are arranged and welded in three groups between the inner guide tube 6 and the air guide tube 5;

[0029] By adopting the above technical solution, more drip tubes 8 are provided at the inner lead pipe 6 and the air lead pipe 5 to guide the liquid after the smoke condenses to flow out.

[0030] The upper conduit 14 is arranged and welded in five groups on the surface of the U-shaped inner tube 12;

[0031] By adopting the above technical solution, more upper ducts 14 are provided at the U-shaped inner tube 12 to contact the flue gas and conduct low temperature.

[0032] The guide tubes 13 are welded in three groups between the vertical tube bodies of the U-shaped inner tube 12;

[0033] By adopting the above technical solution, more connecting pipes 13 are provided at the U-shaped inner tube 12 to contact the flue gas and conduct low temperature.

[0034] The other end of the inner lead pipe 6 away from the outer connecting plate 4 is provided with a threaded ring wall 15;

[0035] By adopting the above technical solution, the inner guide pipes 6 installed at both ends of the ducted fan 1 can be screwed to the existing smoke exhaust filter pipe and the detection pipe of the gas detector through the threaded ring wall 15 for communication.

[0036] It should be noted that the present invention is a flue gas pretreatment device for continuous flue gas emission detection. The outer connecting rings 2 welded at both ends of the ducted fan 1 can be inserted into the air duct 5, and the outer connecting plate 4 outside the air duct 5 can be screwed to the upper connecting plate 3 with the help of bolts for installation. When flue gas continuous emission detection requires flue gas detection, the inner guide pipe 6 installed at both ends of the ducted fan 1 can be screwed to the existing flue gas exhaust filter pipe and the detection pipe of the gas detector with the threaded ring wall 15 for connection. Then the outer pipe 11 extending from the air duct 5 can be respectively connected to the equipment pipes for circulating the refrigerant, so that the cold air generated by the refrigerant can enter the U-shaped inner pipe 12 through a group of pipes of the outer pipe 11, and then the U-shaped inner pipe 12 cooperates with the guide pipe 13 and the upper guide pipe 14 to conduct low temperature in the inner guide pipe 6, and the inner row hole 16 at the outer pipe 11 Cold air can be passed between the air duct 5 and the inner duct 6. The two end pipe openings of the air duct 5 and the inner duct 6 can be sealed by adhesive sheets, so that there is a sealed space between the air duct 5 and the inner duct 6. Then, cold air can be passed into the air duct 5 and the inner duct 6 where cold air is passed, and another group of tube bodies of the outer tube 11 can be connected with the pipe providing cold air through the inner row holes 16, so that the inner duct 6 and the U-shaped inner tube 12 maintain a low temperature environment. When the flue gas is continuously discharged and filtered through the flue gas exhaust filter pipe, it can be condensed and drained at the inner duct 6, and the condensed water can be discharged from the drip pipe 8, and the duct fan 1 can guide the flue gas through the inner duct 6 to the detection pipe of the gas detector for continuous detection. When the flue gas after condensation and drainage enters the gas detector for emission detection, the gas detector is not easily affected by water vapor.

[0037] It should be noted that the present invention is a flue gas pretreatment device for continuous flue gas emission detection. The components in the present invention are all components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas pretreatment device for continuous flue gas emission detection, characterized by: The invention comprises a ducted fan (1), an outer connecting ring (2), an upper connecting plate (3), an outer connecting plate (4) and an air bleed pipe (5). The outer connecting ring (2) is symmetrically welded to the outer shell of the two ends of the ducted fan (1), and the upper connecting plate (3) is welded to the outer ring wall surface of the outer connecting ring (2). Bolts are screwed between the upper connecting plate (3) and the outer connecting plate (4), and the outer connecting plate (4) is welded to the outer pipe wall of the air bleed pipe (5). The air bleed pipe (5) is inserted into the outer connecting ring (2), and the inner bleed pipe (6) is welded to the pipe body of the air bleed pipe (5) by a short connecting plate (7). The lower pipe surface of the inner bleed pipe (6) is mutually connected and welded with a drip pipe (8) that passes through the air bleed pipe (5) downward. , and an inner lead hole (9) is symmetrically opened on the tube wall of one side of the air duct (5), and an outer lead hole (10) is opened on the surface of the air duct (5) outside the inner lead hole (9), an outer tube (11) is welded between the hole walls of the inner lead hole (9) and the outer hole (10), and a U-shaped inner tube (12) is welded between the tube openings of the outer tube (11) extending into the inner lead tube (6), and a connecting tube (13) is welded between the vertical tubes of the U-shaped inner tube (12), and an upper guide tube (14) is welded on the surface of the long tube body of the connecting tube (13), and an inner row of holes (16) is opened on the surface of the outer tube (11) between the air duct (5) and the inner lead tube (6).

2. A flue gas pretreatment device for continuous flue gas emission detection according to claim 1, characterized in that: Two groups of short connecting plates (7) are welded between the air duct (5) and the inner air duct (6).

3. The flue gas pretreatment device for continuous flue gas emission detection according to claim 1, characterized in that: The drip tubes (8) are arranged and welded in three groups between the inner guide tube (6) and the air guide tube (5).

4. The flue gas pretreatment device for continuous flue gas emission detection according to claim 1, characterized in that: Five groups of the upper conduits (14) are arranged and welded on the surface of the U-shaped inner tube (12).

5. The flue gas pretreatment device for continuous flue gas emission detection according to claim 1, characterized in that: The connecting pipes (13) are welded in three groups between the vertical pipe bodies of the U-shaped inner pipe (12).

6. The flue gas pretreatment device for continuous flue gas emission detection according to claim 1, characterized in that: A threaded ring wall (15) is provided in the pipe opening at the other end of the inner guide pipe (6) away from the outer connecting plate (4).

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