CN210400969U - Ship chimney tail gas dilution sampling device - Google Patents

Abstract

The utility model relates to an environmental monitoring equipment technical field, more specifically relates to a boats and ships chimney tail gas dilutes sampling device. The device comprises a sample introduction mechanism, a dilution mechanism, a staying cabin and a sampling mechanism which are sequentially communicated, wherein the sample introduction mechanism is connected with a ship chimney and is used for collecting flue gas discharged by the ship chimney; the diluting mechanism is communicated with the sample feeding mechanism and is used for diluting the collected smoke; an air inlet pipe is arranged in the staying cabin, is communicated with the diluting mechanism and extends to the bottom of the staying cabin; the sampling mechanism is connected to the top of the staying cabin and used for sampling the diluted gas. The flue gas enters the device from the sample injection mechanism, then flows into the dilution mechanism, and is mixed and diluted in the dilution mechanism. The flue gas after diluting flows into along the intake pipe and stops the cabin bottom, and the turbulent air current of top speed is collided with the bottom concave surface after, turns to and rises, forms steady laminar flow, flows into sampling mechanism at last, carries out particulate matter and gaseous pollutant's sampling.

Description

Ship chimney tail gas dilution sampling device

Technical Field

The utility model relates to an environmental monitoring equipment technical field, more specifically relates to a boats and ships chimney tail gas dilutes sampling device.

Background

Commercial chimney sampling device on the market all can only operate on the chimney that possesses the sampling hole, because boats and ships chimney structure is special, and the exhaust gas concentration that discharges is high, the temperature is high, and exploitation appearance hole probably leads to toxic gas to leak the cabin, endangers personal safety, therefore boats and ships chimney all does not have the sampling hole. At present, some monitoring work mainly monitor the sampling through the mode that directly stretches into sampling pipe from boats and ships chimney gas vent, but boats and ships flue gas concentration is high, the temperature is high, and the particulate matter in the direct collection chimney causes the sampling filter membrane to transship easily to cause impact and corruption to monitoring facilities. In order to monitor the tail gas of the ship chimney, a dilution sampling method is preferred, and the existing flue gas dilution device has the problems of large volume, structural solidification and the like, and cannot be flexibly assembled and disassembled to be applied to different ship chimney platforms. Meanwhile, the existing dilution system has the problem that the existing dilution system is not easy to clean and maintain in time, the flue gas has serious turbulence in the stopping cabin, and the flue gas can not be ensured to flow stably in the stopping cabin.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome above-mentioned prior art the defect, provide a boats and ships chimney tail gas dilution sampling device, the structure is light, is applied to the boats and ships chimney sampling of different positions, co-altitude, different pipe diameters in a flexible way. Meanwhile, the problem that the device is not easy to clean and maintain is solved, and the stable flow of the smoke in the stopping cabin is ensured.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a ship chimney tail gas dilution sampling device comprises a sample introduction mechanism, a dilution mechanism, a staying cabin and a sampling mechanism which are sequentially communicated, wherein the sample introduction mechanism is connected with a ship chimney and used for collecting flue gas discharged by the ship chimney; the diluting mechanism is communicated with the sample feeding mechanism and is used for diluting the collected smoke; an air inlet pipe is arranged in the staying cabin, is communicated with the diluting mechanism and extends to the bottom of the staying cabin; the sampling mechanism is connected to the top of the staying cabin and used for sampling the diluted gas.

Wherein, the flue gas enters into the device from the sample introduction mechanism firstly, then flows into the dilution mechanism, and is mixed and diluted in the dilution mechanism. The flue gas after diluting flows into along the intake pipe and stops the cabin bottom, and the turbulent air current of top speed is collided with the bottom concave surface after, turns to and rises, forms steady laminar flow, flows into sampling mechanism at last, carries out particulate matter and gaseous pollutant's sampling.

Further, dilute the mechanism including diluting the chamber and being used for providing the gaseous air supply of dilution, dilute the chamber both ends and communicate respectively and advance a kind mechanism and stop the cabin, the air supply is connected in the inlet end of diluting the chamber alone, provides dilution gas and flue gas mixing dilution. The air source and the sample injection mechanism are both connected to the air inlet end of the dilution cavity. The air supply is mainly used for providing dilution gas, and the dilution gas adopted by the scheme is pure air.

Furthermore, an air hole plate and a conical block for guiding air flow are arranged in the dilution cavity, and the air hole plate and the conical block are arranged close to the air inlet end of the dilution cavity; the conical blocks are placed in a forward conical shape, and gas is guided, diffused and uniformly mixed; the inside of the dilution cavity is coated with a Teflon coating. The gas hole plate and the conical block are used for fully mixing the flue gas and the diluent gas, and meanwhile, the inner wall of the diluent cavity is coated with a Teflon coating to prevent the adhesion of the gas and particles.

Furthermore, the diluting mechanism also comprises a diluting gas heating device, and the diluting gas heating device is connected between the diluting cavity and the gas source. The diluent gas heating device is used for heating diluent gas, simulating the atmospheric reaction process at different diluent temperatures, and meeting the requirements of different monitoring purposes, wherein the heating temperature is 0-250 ℃.

Furthermore, a first outlet and a second outlet are arranged at the top of the staying cabin, the first outlet is communicated with the sampling mechanism, and the second outlet is connected with an air suction pump for providing air flow pressure. The first outlet is communicated with the sampling mechanism and is mainly used for collecting particles in the diluted smoke through a cutter and a filter membrane. The second outlet is used for connecting with an air pump to provide air flow pressure, so that the whole system forms negative pressure, and the smoke in the chimney enters the whole device.

Furthermore, the sampling mechanism comprises an air outlet pipe and a sampling device, wherein the air outlet pipe is connected with the first outlet and is communicated with the sampling device; the sampling device comprises a particulate cutter, a filter membrane clamp and a particulate sampling pump which are sequentially connected; and the air inlet path of the air source, the air outlet path of the air pump and the air outlet path of the particulate matter sampling pump are respectively provided with a flowmeter for measuring the air flow.

Wherein, the outlet duct generally adopts the three-way pipe, is equipped with two sets of sampling device simultaneously and gathers. The flow meters arranged at each position mainly measure air source air inflow M1, air suction pump air suction quantity N1 and particulate matter sampling pump air suction quantity N2, the air inflow M2 of flue gas is calculated, and M2 is N1+ N2-M1, and then the dilution multiple is calculated through (M1+ M2)/M2, so that the dilution ratio can be adjusted through subsequent operation, and constant-speed sampling is realized.

Furthermore, the stopping cabin can be disassembled into a first half cabin and a second half cabin which are assembled into a whole through a ring buckle; the assembly position periphery in first half cabin, the half cabin of second is equipped with annular sand grip, ring buckle inner wall is equipped with the annular groove with annular sand grip looks interlock. The stop cabin is composed of a first half cabin and a second half cabin which are connected through a circular ring buckle, so that the stop cabin can be conveniently detached on site for cleaning and maintenance. Meanwhile, the assembly positions of the first half cabin and the second half cabin are required to be provided with Teflon gaskets, sealing is ensured, and the phenomenon that air enters the cabin to cause dilution and influence measurement is avoided.

Furthermore, the sampling mechanism comprises a sampling pipe and a fixing clamp, one end of the sampling pipe extends into the ship chimney, and the other end of the sampling pipe is communicated with the diluting mechanism; the fixing clamp is detachably mounted at a chimney opening of the ship and used for clamping the stable sampling pipe. The sampling pipe specifically includes stainless steel extension pipe, stainless steel elbow and copper sampling pipe, connects through the buckle each other, is applicable to the sampling of the boats and ships chimney of different positions, co-altitude, different pipe diameters. The copper sampling pipe can be bent by utilizing the characteristic of soft texture of the copper sampling pipe, and the copper sampling pipe is bent into a corresponding shape according to the radian of a pipeline of a ship chimney on site, so that the copper sampling pipe can be conveniently and smoothly stretched into the chimney. In addition, the fixing clamp is used for fixing the copper sampling pipe at different section positions of a chimney discharge port, so that the copper sampling pipe is prevented from extending into the chimney in the process of position deviation, and the purpose of accurate sampling on different sections of the chimney is achieved.

Furthermore, a third outlet for directly sampling gas is also arranged at the top of the staying cabin, and the third outlet is a normally closed outlet; a condensed water discharge port is also formed in the bottom of the staying cabin, and a plug is assembled on the condensed water discharge port; the interior of the staying cabin is coated with a Teflon coating. The third outlet is typically provided with a valve for withdrawing a diluted sample of flue gas. And a condensed water discharge port is arranged at the bottom of the staying cabin and used for discharging condensed water formed by condensing the flue gas, and a plug is used for plugging in a normal state. The inner wall of the staying cabin is coated with a Teflon coating to prevent the adhesion of gas and particles.

The stopping cabin is characterized by further comprising a fixed frame, the fixed frame is of a rectangular frame structure, a plurality of fixed hoops are arranged on the peripheral cabin body of the stopping cabin, and the stopping cabin is locked and fixed in the fixed frame through the fixed hoops. The fixed frame is used for fixing the stop cabin and the whole device, is convenient to stably place, move and has a certain anti-collision effect.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a ship chimney tail gas dilution sampling device, 1) through diluting the sampling, realize sampling to particulate matter and gaseous pollutant in high concentration, high temperature ship tail gas constant speed, improve the scientificity of sampling, avoid the determination error; 2) the whole device can be disassembled, assembled and flexibly adjusted through the circular ring buckle, and is suitable for sampling ship chimneys with different positions, different heights and different pipe diameters; 3) the flue gas reaches the bottom of the staying cabin through the air inlet pipe and then reverses to form stable upward laminar flow, and the flue gas flows stably; 4) the staying cabin can be quickly opened and sealed through the annular buckle, so that the staying cabin is convenient to clean and maintain in time; 5) fix through fixed frame, conveniently stop cabin and integrated device and steadily place and carry the removal, have certain crashproof effect simultaneously.

Drawings

Fig. 1 is a usage state diagram of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a schematic view of a part of the structure of the present invention (without a sample injection mechanism).

Fig. 4 is a view showing a fixed state of the stay module.

Figure 5 is an exploded view of the structure of the holding chamber.

Fig. 6 is a diagram showing a state of gas flow inside the dilution chamber.

Fig. 7 is a view showing a state of gas flow inside the stay module.

The device comprises a sample feeding mechanism 1, a diluting mechanism 2, a stopping chamber 3, a sampling mechanism 4, a ship chimney 5, a gas inlet pipe 6, an air pump 7, a fixing frame 8, a sampling pipe 11, a fixing clamp 12, a diluting cavity 21, a gas source 22, a gas hole plate 23, a conical block 24, a diluting gas heating device 25, a first outlet 31, a second outlet 32, a third outlet 33, a condensed water discharge port 34, a first half chamber 301, a second half chamber 302, a circular ring buckle 303, a 3011 annular convex strip, a 3031 annular groove, a 41 gas outlet pipe, a 42 sampling device and a fixed hoop 81.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example 1

As shown in fig. 1-2, the embodiment provides a ship chimney tail gas dilution sampling device, which includes a sample introduction mechanism 1, a dilution mechanism 2, a staying cabin 3, and a sampling mechanism 4, which are sequentially communicated. In addition, still including being used for placing the fixed frame 8 that stops the cabin 3, fixed frame 8 is the rectangular frame structure, stops that the peripheral cabin body in cabin 3 is equipped with two fixed staple bolts 81, stops that cabin 3 is fixed in fixed frame 8 through fixed staple bolt 81 locking. Specifically, the fixing hoop 81 is fastened to the holding cabin 3, and is fastened and fixed to the fixing frame 8 by bolts, as shown in fig. 4.

Wherein, the sample introduction mechanism 1 is connected with the ship chimney 5 and is used for collecting the smoke discharged by the ship chimney 5. Specifically, sampling mechanism 1 includes sampling pipe 11 and fixation clamp 12, and sampling pipe 11 specifically includes stainless steel extension pipe, stainless steel elbow and copper sampling pipe, and each part is connected through the buckle each other, and the one end of copper sampling pipe stretches into boats and ships chimney 5, and stainless steel elbow and stainless steel extension pipe are connected to the other end, finally switch on mutually with diluting mechanism 2. And fixation clamp 12 demountable installation is in 5 mouths of boats and ships chimney for fix the different cross-sectional positions of chimney discharge port with copper sampling pipe, prevent that copper sampling pipe from stretching into the in-process offset of chimney, realize the purpose of carrying out the accurate sampling on the different cross-sections of chimney.

In addition, the diluting mechanism 2 is communicated with the sample feeding mechanism 1 and is used for diluting the collected smoke. Specifically, dilute mechanism 2 and include diluting chamber 21, air supply 22 and dilute gas heating device 25, dilute chamber 21 both ends and communicate sampling mechanism 1 and stay cabin 3 respectively, air supply 22 connects in the inlet end of diluting chamber 21 alone, provides dilute gas and flue gas mixture and dilutes, and dilute gas is pure air in this embodiment. The air source 22 and the sample injection mechanism 1 are both connected to the air inlet end of the dilution cavity 21, and the dilution gas heating device 25 is connected between the dilution cavity 21 and the air source 22, and is used for heating the dilution gas, simulating the atmospheric reaction process at different dilution temperatures, and meeting the requirements of different monitoring purposes, wherein generally, the heating temperature is 0-250 ℃.

Furthermore, an air hole plate 23 and a conical block 24 for guiding air flow are arranged in the dilution cavity 21, and the air hole plate 23 and the conical block 24 are arranged close to the air inlet end of the dilution cavity 21. As shown in fig. 6, in this embodiment, the dilution chamber 21 is provided with two parallel gas hole plates 23, and the tapered block 24 is disposed on the gas hole plate 23 at the lower layer in a forward tapered shape to guide and diffuse the gas and mix the gas sufficiently and uniformly. To prevent the adhesion of gases and particles, the interior of the dilution chamber 21 is coated with a teflon coating. In addition, the top and the bottom of the diluting cavity 21 are provided with buckles, so that the washing can be conveniently disassembled.

Wherein, the staying cabin 3 is used for providing staying, cooling and reacting time for the diluted flue gas, and the staying time designed by the device is more than 5S. In this embodiment, stay the inside intake pipe 6 that is equipped with of cabin 3, intake pipe 6 communicates dilutes mechanism 2 to extend to and stay 3 bottoms in cabin, gaseous from diluting the chamber 21 and getting into the back, arrive and stay 3 bottoms in cabin through an intake pipe 6 earlier, the turbulent air current of extremely fast with the bottom concave surface collision back, turn to and rise, form steady laminar flow, be convenient for particulate matter and gaseous pollutant's sampling, as shown in fig. 7.

Meanwhile, the top of the staying cabin 3 is provided with a first outlet 31 and a second outlet 32, the first outlet 31 is communicated with the sampling mechanism 4, and the device is mainly used for collecting particles in the diluted smoke through a cutter and a filter membrane. The second outlet 32 is connected with an air suction pump 7 for providing air flow pressure, so that the air flow pressure is provided, the whole system forms negative pressure, and the smoke in the chimney is promoted to enter the whole device.

In this embodiment, the top of the staying chamber 3 is further provided with a third outlet 33 for directly sampling the gas, the third outlet 33 is a normally closed outlet, and the third outlet 33 is generally provided with a valve for extracting the diluted flue gas sample. Meanwhile, the bottom of the staying cabin 3 is also provided with a condensed water discharge port 34 for discharging condensed water formed by condensing the flue gas, and a plug is normally used for blocking. To prevent the adhesion of gases and particles, the interior of the residence chamber 3 is coated with a teflon coating.

Specifically, the stopping cabin 3 is detachably divided into a first half cabin 301 and a second half cabin 302, and the first half cabin 301 and the second half cabin 302 are assembled into a whole through a circular ring buckle 303. Annular convex strips 3011 are arranged on the peripheries of the assembling positions of the first half cabin 301 and the second half cabin 302, and annular grooves 3031 meshed with the annular convex strips 3011 are arranged on the inner wall of the annular buckle 303. As shown in fig. 5, the stopping cabin 3 is composed of a first half cabin 301 and a second half cabin 302, which are connected by a circular buckle 303, so that the stopping cabin can be disassembled on site for cleaning and maintenance. Meanwhile, the assembly positions of the first half cabin 301 and the second half cabin 302 need to be sealed, so that pollution caused by smoke leakage is avoided.

Further, as shown in fig. 4, a sampling mechanism 4 is attached to the top of the residence chamber 3 for sampling the diluted gas. The sampling mechanism 4 comprises an outlet pipe 41 and a sampling device 42, wherein the outlet pipe 41 is connected to the first outlet 31 and is communicated with the sampling device 42. In this embodiment, the outlet pipe 41 is a three-way pipe and is equipped with two sets of sampling devices 42 for sampling. The sampling device 42 specifically comprises a particulate cutter, a filter membrane clamp and a particulate sampling pump which are connected in sequence and used for collecting particulate matters in the smoke.

In addition, in order to facilitate the assembly and disassembly of the device, the sampling tube 11 and the dilution cavity 21, the dilution cavity 21 and the air inlet tube 6, the air outlet tube 41 and the sampling device 42 are connected by a circular buckle, as shown in fig. 2-3, the connection structure is similar to the connection of the first half cabin 301 and the second half cabin 302, therefore, the non-collection end of the sampling tube 11, the two ends of the dilution cavity 21, the air inlet end of the air inlet tube 6, the air outlet end of the air outlet tube 41 and the connection position of the sampling device 42 and the air outlet tube are provided with circular convex strips, and the inner wall of the circular buckle for connection is correspondingly provided with a circular groove which is meshed and locked with. The whole device can be disassembled and assembled through the circular ring buckle, is flexibly adjusted, and is suitable for sampling ship chimneys with different positions, different heights and different pipe diameters.

In order to achieve a better monitoring effect and adjust dilution parameters, flow meters for measuring gas flow are arranged on the gas inlet path of the gas source 22, the gas outlet path of the air pump 7 and the gas outlet path of the particulate sampling pump, and the flow meters arranged at each position mainly measure the gas inlet amount M1 of the gas source 22, the air suction amount N1 of the air pump 7 and the pumping gas amount N2 of the particulate sampling pump. M2 is converted through the air inflow M2 of flue gas, namely N1+ N2-M1, and then a dilution multiple is calculated through (M1+ M2)/M2, so that the air inflow and the air outflow can be operated subsequently, the dilution ratio is adjusted, constant-speed sampling is achieved, and generally the dilution ratio is adjustable between 7-15 times.

The working process of the device is as follows:

firstly, the parts of the sampling mechanism 1 are installed and fixed at the port of a ship chimney 5, the sampling position is determined, and then the sampling mechanism 1, the diluting mechanism 2, the staying cabin 3, the sampling mechanism 4, the fixed frame 8 and the like are assembled and stably placed. The gas source 22 and the air pump 7 are started to pre-extract the flue gas so as to fill the whole device, and meanwhile, the diluent gas heating device 25 is started to heat the diluent gas to a proper temperature for monitoring. And then, setting relevant parameters and devices of the sampling mechanism 4, and starting a particulate matter sampling pump to sample particulate matters. Flue gas of the ship chimney 5 enters the device from the sample feeding mechanism 1, is mixed with dilution air in the dilution cavity 21, and is guided and diffused through the air hole plate 23 and the conical block 24 to be diluted uniformly. The flue gas after diluting flows into along intake pipe 6 and stops 3 bottoms in the cabin, and the turbulent air current of top speed bumps the back with the bottom concave surface, turns to and rises, forms steady layer, and wherein a part of air current is taken out by aspiration pump 7, and another part air current gets into and adopts the mechanism, passes through particulate matter cutterbar, filter membrane clamp and particulate matter sampling pump in proper order, carries out the sampling of particulate matter and gaseous pollutants.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a boats and ships chimney tail gas dilutes sampling device which characterized in that: comprises a sample introduction mechanism (1), a dilution mechanism (2), a staying cabin (3) and a sampling mechanism (4) which are communicated in sequence,

the sample feeding mechanism (1) is connected with the ship chimney (5) and is used for collecting the flue gas discharged by the ship chimney (5);

the diluting mechanism (2) is communicated with the sample feeding mechanism (1) and is used for diluting the collected smoke;

an air inlet pipe (6) is arranged inside the staying cabin (3), and the air inlet pipe (6) is communicated with the diluting mechanism (2) and extends to the bottom of the staying cabin (3);

the sampling mechanism (4) is connected to the top of the staying cabin (3) and used for sampling the diluted gas.

2. The marine chimney tail gas dilution sampling device according to claim 1, characterized in that: dilute mechanism (2) including diluting chamber (21) and being used for providing gas source (22) of dilution gas, dilute chamber (21) both ends and communicate respectively and advance kind mechanism (1) and stop cabin (3), gas source (22) are connected in the inlet end of diluting chamber (21) alone, provide dilution gas and flue gas mixture and dilute.

3. The marine chimney tail gas dilution sampling device according to claim 2, characterized in that: an air hole plate (23) and a conical block (24) for guiding air flow are arranged in the dilution cavity (21), and the air hole plate (23) and the conical block (24) are arranged close to the air inlet end of the dilution cavity (21); the conical block (24) is placed in a forward conical shape, and is used for guiding and diffusing gas and uniformly mixing the gas; the interior of the dilution cavity (21) is coated with a Teflon coating.

4. The marine chimney tail gas dilution sampling device according to claim 2, characterized in that: the diluting mechanism (2) further comprises a diluting gas heating device (25), and the diluting gas heating device (25) is connected between the diluting cavity (21) and the gas source (22).

5. The marine chimney tail gas dilution sampling device according to claim 2, characterized in that: the top of the staying cabin (3) is provided with a first outlet (31) and a second outlet (32), the first outlet (31) is communicated with the sampling mechanism (4), and the second outlet (32) is connected with a suction pump (7) for providing air flow pressure.

6. The marine chimney tail gas dilution sampling device according to claim 5, characterized in that: the sampling mechanism (4) comprises an air outlet pipe (41) and a sampling device (42), the air outlet pipe (41) is connected with the first outlet (31) and communicated with the sampling device (42); the sampling device (42) comprises a particulate cutter, a filter membrane clamp and a particulate sampling pump which are sequentially connected; and the air inlet path of the air source (22), the air outlet path of the air pump (7) and the air outlet path of the particle sampling pump are respectively provided with a flowmeter for measuring the air flow.

7. The marine chimney tail gas dilution sampling device according to claim 1, characterized in that: the stopping cabin (3) is detachably provided with a first half cabin (301) and a second half cabin (302), and the first half cabin (301) and the second half cabin (302) are assembled into a whole through a circular ring buckle (303); annular convex strips (3011) are arranged on the peripheries of the assembly positions of the first half cabin (301) and the second half cabin (302), and annular grooves (3031) meshed with the annular convex strips (3011) are formed in the inner wall of the circular ring buckle (303).

8. The marine chimney tail gas dilution sampling device according to claim 1, characterized in that: the sampling mechanism (1) comprises a sampling pipe (11) and a fixing clamp (12), one end of the sampling pipe (11) extends into the ship chimney (5), and the other end of the sampling pipe is communicated with the diluting mechanism (2); the fixing clamp (12) is detachably mounted at the opening of the ship chimney (5) and used for clamping the stable sampling pipe (11).

9. The marine chimney tail gas dilution sampling device according to claim 5, characterized in that: the top of the staying cabin (3) is also provided with a third outlet (33) for directly sampling gas, and the third outlet (33) is a normally closed outlet; the bottom of the staying cabin (3) is also provided with a condensed water discharge port (34), and the condensed water discharge port (34) is provided with a plug; the interior of the staying cabin (3) is coated with a Teflon coating.

10. The marine chimney tail gas dilution sampling device according to claim 1, characterized in that: still include fixed frame (8), fixed frame (8) are the rectangular frame structure, stop the peripheral cabin body in cabin (3) and be equipped with a plurality of fixed staple bolts (81), stop cabin (3) and be fixed in fixed frame (8) through fixed staple bolt (81) locking.

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