CN213121314U

CN213121314U - Novel flue gas sampling device

Info

Publication number: CN213121314U
Application number: CN202021936658.0U
Authority: CN
Inventors: 侯天赐; 陶永沛; 武模兵; 李宪波; 钱兴文
Original assignee: Qingdao Huachen Weiye Electric Power Technology Engineering Co ltd
Current assignee: Qingdao Huachen Weiye Electric Power Technology Engineering Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-05-04
Anticipated expiration: 2030-09-08

Abstract

The utility model discloses a novel flue gas sampling device, which comprises an air inlet pipe, a heat preservation pipe, a cooling pipe and a detection device which are connected in sequence; a dust removal net block for dust removal and water absorption is arranged in the heat preservation pipe and is connected with the cooling pipe through a connecting piece, and a vent hole is formed in the connecting piece; a spiral heat dissipation copper pipe is fixedly installed in the cooling pipe, one end of the heat dissipation copper pipe is connected with the air vent, the other end of the heat dissipation copper pipe is connected with an air inlet cover arranged in the detection device, a detection chamber for gas detection is further arranged in the detection device, one side of the detection chamber is communicated with the air inlet cover, and a fan is installed on the other side of the detection chamber; a thermometer and a gas sensor are arranged in parallel in the detection chamber; the utility model has compact structure and small device volume; the handheld sampling mode is flexible to operate, the sampling range is expanded, the sampling time is shortened, and the sampling efficiency is improved; remove dust, dewatering and heat preservation to the sample flue gas, prevent that sampling device from causing influences such as corruption to it because of impurity and moisture, improved sampling device's life.

Description

Novel flue gas sampling device

Technical Field

The utility model belongs to the technical field of flue gas sampling test, concretely relates to novel flue gas sampling device.

Background

Flue gas is a mixture of gas and smoke dust and is the main cause of atmospheric pollution in residential areas. The composition of the flue gas is complex, the gas comprises SO₂、CO、CO₂Hydrocarbons, nitrogen oxides, and the like, and the soot includes ash, coal particles, oil droplets, pyrolysis products, and the like of the fuel. Therefore, the pollution of the flue gas to the environment is the composite pollution of various poisons, the sampling and detection of the flue gas are important steps before the flue gas is discharged, and the sampling and detection of the flue gas are generally detected by a flue gas detector and are sampled by a sampling device.

Most of the existing flue gas sampling devices for flue gas component detection are fixedly arranged at a flue gas outlet or a flue gas concentration part, the sampling range is greatly limited, the devices need to be disassembled and assembled during sampling detection each time, time and labor are wasted, the parts of the devices are easy to loosen due to repeated disassembly and assembly, the sealing property and the installation effect of the devices are reduced, and the sampling and the detection of the devices are further influenced; simultaneously, holistic corrosion resistance and high temperature resistance's effect are relatively poor, do not remove dust to the flue gas of sample detection and filter, have reduced sampling device's life, have shortened sampling device's clearance cycle.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art, and provides a novel flue gas sampling device which has compact structure and small volume, and the handheld sampling mode can make the sampling operation more flexible and convenient, increase the sampling range, shorten the sampling time and improve the sampling efficiency; gather and carry out filtration and thermal-insulated to sampling test's gas, prevent in the impurity entering detection device in the flue gas to regulate and control the temperature of sample flue gas, better detect.

The technical scheme of the utility model is that:

a novel flue gas sampling device is characterized by comprising an air inlet pipe, a heat preservation pipe, a cooling pipe and a detection device which are connected in sequence; the heat-insulating pipe is arranged between the air inlet pipe and the cooling pipe, one end of the cooling pipe is connected with the heat-insulating pipe, and the other end of the cooling pipe is fixedly connected with the detection device; a plurality of dust removal net blocks for dust removal and water absorption are uniformly arranged in the heat preservation pipe, the heat preservation pipe is fixedly connected with the cooling pipe through a connecting piece, and a vent hole for ventilation is formed in the connecting piece; a spirally arranged heat dissipation copper pipe is fixedly arranged in the cooling pipe, one end of the heat dissipation copper pipe is connected with the air vent, the other end of the heat dissipation copper pipe is connected with an air inlet cover arranged in the detection device, a detection chamber for gas detection is also arranged in the detection device, one side of the detection chamber is communicated with the air inlet cover, and the other side of the detection chamber is provided with a fan; and a thermometer and a gas sensor are arranged in the detection chamber side by side.

Furthermore, a plurality of air inlets used for air inlet are uniformly arranged on the air inlet pipe, and a sealing gasket used for sealing is arranged between the air inlet pipe and the heat preservation pipe.

Further, a built-in power supply for supplying power to the fan is installed at the bottom of the detection device; and a display panel is arranged at the top of the detection device, and is connected with the thermometer and the gas sensor and used for displaying monitoring data.

Furthermore, one side of the detection device is fixedly connected with the cooling pipe, and the other side of the detection device is fixedly connected with a handle; the handle is internally provided with an air outlet pipe connected with the fan, one end of the air outlet pipe is fixedly connected with the fan, the other end of the air outlet pipe penetrates through the handle and is provided with a containing bag, and the containing bag is fixedly connected with the air outlet pipe through a connector.

Furthermore, a water injection valve and a drain valve are arranged on the cooling pipe, and cooling liquid is injected into the cooling pipe through the water injection valve.

Furthermore, the vent hole is conical, the larger opening end of the vent hole is connected with the heat preservation pipe, and the smaller opening end of the vent hole is connected with the heat dissipation copper pipe.

The utility model has the advantages that:

1. the novel smoke sampling device is compact in structure and small in size, and the handheld sampling mode can ensure that the adjustment of the smoke sampling position and the sampling quantity is more flexible during use, so that the sampling range is expanded, the sampling time is shortened, and the sampling efficiency is improved;

2. the utility model, through arranging the air suction pipe and the heat preservation pipe, removes dust, removes water and preserves heat for the sampled smoke, prevents the sampling device from being corroded by impurities and moisture, and prolongs the service life of the sampling device;

3. the utility model discloses a set up cooling device, can cool down the processing to the sample flue gas, prevent that flue gas high temperature from causing the damage to detection device, the accuracy that reducing mechanism detected.

Drawings

Fig. 1 is a schematic sectional structural view of a sampling device provided by the present invention;

fig. 2 is a schematic structural view of the detection device provided by the present invention;

in the figure, 1, an air inlet pipe; 11. an air inlet; 12. a sealing gasket; 2. a heat preservation pipe; 21. a dust removal net block; 22. a connecting member; 23. a vent hole; 3. a cooling tube; 31. a heat dissipation copper pipe; 32. a water injection valve; 33. a drain valve; 4. a detection device; 41. a display panel; 42. a built-in power supply; 43. a detection chamber; 44. an air intake hood; 45. a thermometer; 46. a gas sensor; 47. a fan; 48. an electric wire; 5. a grip; 51. an air outlet pipe; 52. a connector; 53. a storage bag.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention to be solved clearer, the present invention will be further described with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

It is to be understood that the terms "top, bottom, end, other end, side, other side," and the like are used in an orientation or positional relationship based on the orientation or positional relationship as shown in the figures, merely to facilitate description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1 and 2, the utility model relates to a novel flue gas sampling device, which comprises an air inlet pipe 1, a heat preservation pipe 2, a cooling pipe 3 and a detection device 4 which are connected in sequence, wherein the heat preservation pipe 2 is installed between the air inlet pipe 1 and the cooling pipe 3, one end of the cooling pipe 3 is connected with the heat preservation pipe 2, the other end is fixedly connected with the detection device 4, the sampled flue gas enters the heat preservation pipe 2 through the air inlet pipe 1 for heat insulation and preservation, the heat preservation pipe 2 has good heat insulation and preservation effects, the temperature of the flue gas entering the heat preservation pipe 2 can be consistent with the temperature during collection, and is not influenced by external environmental factors, thereby avoiding the influence on the later-stage cooling temperature caused by the temperature change of the sampled flue gas, and the sampled flue gas is cooled by the cooling pipe 3 after coming out of the heat preservation pipe and enters the detection device; a plurality of air inlets 11 are uniformly and circumferentially arranged on the pipe wall of the air inlet pipe 1, and the circumferentially arranged air inlets 11 can uniformly absorb smoke from multiple angles; a sealing washer 12 is arranged at the joint of the air inlet pipe 1 and the heat preservation pipe 2 and used for sealing the joint of the air inlet pipe 1 and the heat preservation pipe 2 and preventing the leakage of sampling smoke; a plurality of dust removal net blocks 21 are uniformly arranged on the inner pipe wall of the heat preservation pipe 2, the dust removal net blocks 21 can remove dust and absorb water for flue gas entering the heat preservation pipe 2, particle impurities and water vapor in sampled flue gas are reduced, and the sampled flue gas can be detected more accurately; the heat preservation pipe 2 and the cooling pipe 3 are fixedly connected through a connecting piece 22, and a conical vent hole 23 for ventilation is arranged in the connecting piece 22; a spiral heat dissipation copper pipe 31 is fixedly arranged in the cooling pipe 3, one end of the heat dissipation copper pipe 31 is fixedly connected with the vent hole 23 on the connecting piece 22, and the other end of the heat dissipation copper pipe 31 is connected with an air inlet cover 44 arranged in the detection device 4; because the diameter of the tube cavity in the heat preservation tube 2 is larger than the diameter of the heat dissipation copper tube 31, the large opening end of the vent hole 23 with the conical structure is connected with the heat preservation tube 2, and the small opening end is connected with the heat dissipation copper tube 31, the process that the flue gas enters the heat dissipation copper tube 31 from the heat preservation tube 2 is a gas compression process, and the gas compression is a heat release process, so that the sampling flue gas can be better dissipated when entering the heat dissipation copper tube 31 from the heat preservation tube 2; a detection chamber 43 for detecting smoke is arranged in the detection device 4, one side of the detection chamber 43 is communicated with an air inlet cover 44, sampled smoke enters the detection chamber 43 through the air inlet cover 44 for detection after being cooled by the heat dissipation copper pipe 31, and a fan 47 is arranged on the other side of the detection chamber 43 and used for providing power for the whole device for suction; a thermometer 45 and a gas sensor 46 are arranged in the detection chamber 43 side by side, the thermometer 45 is used for monitoring whether the temperature of the flue gas entering the detection chamber 43 meets the optimal detection temperature of the gas sensor 46, the gas sensor 46 is used for detecting the components and the concentration in the sampled flue gas, the thermometer 45 and the gas sensor 46 are connected with a display panel 41 arranged on the detection device 4, and the monitored information is fed back through the display panel 41 and is checked by an operator.

In the smoke sampling device, one side of a detection device 4 is fixedly connected with a cooling pipe 3, the other side of the detection device is fixedly provided with a handle 5 for taking the device, an air outlet pipe 51 is arranged in the handle 5, one end of the air outlet pipe 51 extends into the detection device 4 and is connected with a fan 47, the other end of the air outlet pipe 51 penetrates through the handle 5 and is provided with a containing bag 53 for containing smoke, the air outlet pipe 51 is connected with the containing bag 53 through a connector 52, and sampled smoke is extracted from a detection chamber 43 through the fan 47 and then enters the containing bag 53 through the air outlet pipe 51 for collection; a built-in power supply 42 for supplying power to the fan 47 is further installed at the bottom of the detection device, and the built-in power supply 42 is connected with the fan 47 through a wire 48 and supplies power to rotate the fan 47.

Further, be equipped with the water injection valve 32 that is used for the water injection in the top of cooling tube 3, the below is equipped with the drain valve 33 that is used for the drainage, adds the coolant liquid through water injection valve 32 to the inside of cooling tube 3, dispels the heat to heat dissipation copper pipe 31, and messenger's high temperature sample flue gas that can be better cools off, and when sample flue gas temperature was not high, accessible drain valve 33 got rid of the coolant liquid, avoided excessively cooling to the sample flue gas.

Furthermore, in the present embodiment, during operation, the thermometer 45 monitors the temperature of the sampled flue gas in the detection chamber 43, and simultaneously adjusts the content of the cooling liquid in the cooling pipe 3, so that the temperature of the sampled flue gas entering the detection chamber after being cooled meets the optimum temperature of the gas sensor 46, and the gas sensor 46 can better detect the sampled flue gas.

The design scheme has the advantages that the structure is compact, the device size is small, the adjustment of the sampling position and the sampling amount of the flue gas in use can be more flexible by a handheld sampling mode, the sampling time is shortened, and the sampling efficiency is improved; by arranging the air suction pipe and the heat preservation pipe, the sampling flue gas is subjected to dust removal, water removal and heat preservation, so that the influence of impurities and moisture on the sampling device, such as corrosion, is prevented, and the service life of the sampling device is prolonged; through setting up cooling device, can cool down the processing to the sample flue gas, prevent that the flue gas high temperature from causing the damage to detection device, the accuracy that the reducing mechanism detected.

The foregoing description of the specific embodiments of the present invention has been presented for the purposes of illustration and description and is not intended to limit the invention to the precise form disclosed, and it is apparent that numerous changes and modifications may be made in the foregoing description, the examples having been selected and described to illustrate the specific principles and practical application of the invention, to thereby enable one skilled in the art to make and use the invention in various embodiments and with various modifications. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A novel flue gas sampling device is characterized by comprising an air inlet pipe (1), a heat preservation pipe (2), a cooling pipe (3) and a detection device (4) which are connected in sequence; the heat-insulating pipe (2) is arranged between the air inlet pipe (1) and the cooling pipe (3), one end of the cooling pipe (3) is connected with the heat-insulating pipe (2), and the other end of the cooling pipe is fixedly connected with the detection device (4); a plurality of dust removal net blocks (21) for removing dust and absorbing water are uniformly arranged in the heat insulation pipe (2), the heat insulation pipe (2) is fixedly connected with the cooling pipe (3) through a connecting piece (22), and vent holes (23) for ventilating are formed in the connecting piece (22); a spirally arranged heat dissipation copper pipe (31) is fixedly installed in the cooling pipe (3), one end of the heat dissipation copper pipe (31) is connected with the vent hole (23), the other end of the heat dissipation copper pipe is connected with an air inlet cover (44) arranged in the detection device (4), a detection chamber (43) for gas detection is further arranged in the detection device (4), one side of the detection chamber (43) is communicated with the air inlet cover (44), and a fan (47) is installed on the other side of the detection chamber; a thermometer (45) and a gas sensor (46) are arranged in the detection chamber (43) side by side.

2. A sampling device according to claim 1, characterized in that a plurality of air inlets (11) for air inlet are uniformly arranged on the air inlet pipe (1), and a sealing gasket (12) for sealing is arranged between the air inlet pipe (1) and the heat preservation pipe (2).

3. A sampling device according to claim 1, characterized in that the bottom of the detection means (4) is fitted with an internal power supply (42) for powering the fan (47); and a display panel (41) is arranged at the top of the detection device (4), and the display panel (41) is connected with the thermometer (45) and the gas sensor (46) and is used for displaying monitoring data.

4. A sampling device according to claim 1, characterized in that one side of said detecting means (4) is fixedly connected to said cooling tube (3) and the other side is fixedly connected to a handle (5); the handle (5) is internally provided with an air outlet pipe (51) connected with the fan (47), one end of the air outlet pipe (51) is fixedly connected with the fan (47), the other end of the air outlet pipe penetrates through the handle (5) and is provided with a storage bag (53), and the storage bag (53) is fixedly connected with the air outlet pipe (51) through a connector (52).

5. A sampling device according to claim 1, characterized in that the cooling tube (3) is provided with a water injection valve (32) and a water discharge valve (33), and that the cooling tube (3) is injected with a cooling liquid through the water injection valve (32).

6. A sampling device according to claim 1, characterized in that said vent (23) is conical, with a larger open end connected to said thermal insulating tube (2) and a smaller open end connected to said heat dissipating copper tube (31).