CN217442904U - Fly ash sampler for boiler flue - Google Patents

Abstract

Fly ash sampler for boiler flue. During the operation of the boiler, the carbon content of fly ash in the flue gas needs to be monitored, but the sampling is difficult because the flue of the boiler is in negative pressure. The utility model discloses the constitution includes: the sampler comprises a sampler barrel, wherein a flue gas inlet pipeline (2) is arranged on one side of the sampler barrel, a flue gas outlet pipeline (1) which is eccentrically arranged is arranged at the top of the sampler barrel, and the flue gas inlet pipeline is tangential to the sampler barrel; the flue gas inlet pipeline is positioned on the sampler barrel part and is provided with a downward inclined punching section. The utility model is used for the sample of boiler flue flying dust.

Description

Fly ash sampler for boiler flue

The technical field is as follows:

the utility model relates to a boiler flue flying dust sampler.

Background art:

during the operation of the boiler, the carbon content of fly ash in the flue gas needs to be monitored, but the sampling is difficult because the flue of the boiler is in negative pressure.

The utility model has the following contents:

the utility model aims at providing a boiler flue flying dust sampler.

The above purpose is realized by the following technical scheme:

a fly ash sampler for a boiler flue comprises the following components: the sampler comprises a sampler barrel, wherein a flue gas inlet pipeline is arranged on one side of the sampler barrel, a flue gas outlet pipeline which is eccentrically arranged is arranged at the top of the sampler barrel, and the flue gas inlet pipeline is tangent to the sampler barrel;

the flue gas inlet pipeline is positioned on the sampler barrel part and is provided with a downward inclined punching section.

The fly ash sampler for the boiler flue is characterized in that the lower punching section of the flue gas inlet flue forms an included angle of 8 degrees with the horizontal plane.

Has the advantages that:

1. the utility model discloses a centrifugal separation's principle, during putting into the flue with this sampler through the connecting rod during the sample, in the flue gas got into the sampler through sampler inlet channel tangential, produced rotatory separation in the sampler, the flying dust in the flue gas was separated out, fell on the sampler barrel, after a period, takes out the sampler from the flue in, pours the flying dust in the sampling tube, sends to the laboratory and tests.

2. The utility model discloses a flue gas inlet pipeline has down the stroke piece, when containing flue gas stream tangential entering cyclone barrel, has a decurrent speed weight to accelerate the grits and subside, do benefit to and improve separation efficiency.

3. The utility model discloses a flue gas outlet pipeline eccentric settings makes the distance between outlet pipe to barrel wall reduce, has still concentrated the concentration of ash in the flue gas, more is favorable to the later stage separation of grits.

Description of the drawings:

FIG. 1 is a front view of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a top view of the present invention;

in the figure: 1. a flue gas outlet duct; 2. a flue gas inlet duct; 3. a straight section; 4. a conical section; 5. and a sampling tube.

The specific implementation mode is as follows:

example 1:

a fly ash sampler for a boiler flue comprises the following components: the sampler comprises a sampler barrel, wherein a flue gas inlet pipeline 2 is arranged on one side of the sampler barrel, a flue gas outlet pipeline 1 which is eccentrically arranged is arranged at the top of the sampler barrel, and the flue gas inlet pipeline is tangent to the sampler barrel;

the flue gas inlet pipeline is positioned on the sampler barrel part and is provided with a downward inclined punching section.

Example 2:

according to the boiler flue fly ash sampler of embodiment 1, the lower punching section of the flue gas inlet flue forms an included angle of 8 degrees with the horizontal plane.

The working principle is as follows: the sampler barrel has a straight section 3 and a conical section 4, the bottom of the conical section is a sampling barrel 5, the principle of centrifugal separation is adopted, the sampler is placed into a flue through a connecting rod during sampling, flue gas enters the sampler through an inlet channel of the sampler in a tangential manner, rotational separation is generated in the sampler, and fly ash in the flue gas is separated out and falls into the sampling pipe. After a period of time, the sampler is taken out from the flue, and the fly ash in the sampling pipe is poured out and sent to a laboratory for testing. The flue gas outlet pipeline is eccentrically arranged, most of ash particles are separated after the flue gas enters through the flue gas inlet pipeline and passes through three quarters of circles, the ash concentration in the flue gas is reduced a lot, the subsequent ash particle separation is not facilitated, the distance between the outlet pipe and the wall surface of the cylinder body is reduced by adopting the offset, the ash concentration in the flue gas is concentrated, and the later-stage separation of the ash particles is more facilitated.

Claims (2)

1. A fly ash sampler for a boiler flue comprises the following components: sampler barrel, characterized by: a flue gas inlet pipeline is arranged on one side of the sampler cylinder, a flue gas outlet pipeline which is eccentrically arranged is arranged at the top of the sampler cylinder, and the flue gas inlet pipeline is tangent to the sampler cylinder;

the flue gas inlet pipeline is positioned on the sampler barrel part and is provided with a downward inclined punching section.

2. The boiler flue fly ash sampler of claim 1, wherein: the lower punching section of the flue gas inlet flue and the horizontal plane form an included angle of 8 degrees.

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