CN203772611U - Mixer for measuring flue gas ingredients of power station boiler - Google Patents

Abstract

The utility model discloses a mixer used for measuring flue gas components of power station boilers, which comprises a cylindrical container, and at least two inlet pipes with the same structure and a gas outlet connected to the cylindrical container are arranged in the inside of the cylindrical container. tube; the cylindrical container is provided with a sealing cover, a sealing liquid is provided above the sealing cover, and a filtrate is provided at the bottom of the cylindrical container; the air inlet of the air inlet pipe is located outside the cylindrical container, and its other After one end passes through the sealing cover, its gas outlet is located below the filtrate, and the air inlet pipe is provided with a flow regulating valve and a flow meter; the gas outlet pipe is installed on the sealing cover, and one end of the gas outlet passes through the sealing cover and the sealing extended into the air after liquid. The utility model realizes the weight control sampling of multiple measuring points in the section of the boiler flue, and uniformly mixes them into a gas sample for component measurement and analysis, which is very convenient.

Description

A Mixer Used for Measuring Flue Gas Components of Power Plant Boilers

technical field

The utility model relates to a mixer used for measuring flue gas components of power plant boilers, in particular to a gas mixer capable of multi-point gas collection and measurement which can meet standard requirements.

Background technique

As the heat exchange equipment in the tail flue of the power plant boiler, the air preheater is used to recover the heat in the flue gas, reduce the exhaust gas temperature, and improve the thermal efficiency of the boiler; The initial temperature of the air strengthens the ignition and combustion process of the fuel and reduces the loss of incomplete combustion of the fuel. The air leakage of the boiler air preheater affects the operating economy of the unit, so it is very important to measure the air leakage of the air preheater. Due to the large cross-section of the inlet and outlet flue of the air preheater, the composition of the flue gas is uneven, and the air leakage test of the air preheater usually uses the network method to measure the flue gas composition of each measuring point. Measuring the flue gas composition point by point requires a lot of work and takes a long time. Simultaneous measurement cannot be guaranteed, and measurement accuracy is difficult to guarantee.

Utility model content

The technical problem to be solved by the utility model is to provide a mixer for flue gas composition measurement of power plant boilers with simple structure, high efficiency and high measurement accuracy, which can perform multi-point gas collection and composition measurement.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a mixer for the measurement of flue gas components of power plant boilers, the key technology of which is: it is made of a transparent material that is not corroded by the sampling gas Formed cylindrical container, said cylindrical container is provided with at least two inlet pipes and a gas outlet pipe of the same structure communicated therewith;

The cylindrical container is provided with a sealing cover, the height of the sealing cover is lower than the barrel wall of the cylindrical container, a sealing liquid is provided above the sealing cover, and a filtrate is provided at the bottom of the cylindrical container;

The air inlet of the air inlet pipe is located outside the cylindrical container, and its air outlet is located below the filtrate after the other end passes through the sealing cover, and the air inlet pipe is provided with a flow regulating valve and a flow meter;

The gas outlet pipe is arranged on the sealing cover, and one end of the gas outlet extends into the air after passing through the sealing cover and the sealing liquid.

As a further improvement, the lower part of the cylindrical container is provided with a filtrate discharge valve.

Preferably, the air intake pipe is a U-shaped pipe.

The beneficial effects of adopting the above technical solution are: the gas mixer can realize the control sampling of different intake pipes, and improve the accuracy of gas composition measurement; the sealing liquid installed outside the container can timely detect the leakage problem caused by the long-term application deformation of the mixer , Improve the reliability of gas composition measurement; the filtrate in the container can effectively filter the fly ash in the boiler flue gas, which is beneficial to protect the flue gas composition measurement instrument. The utility model realizes the weight control sampling of multiple measuring points in the section of the boiler flue, and uniformly mixes them into a gas sample for component measurement and analysis, which is very convenient.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Among them, 1. Intake pipe, 2. Gas outlet pipe, 3. Flow regulating valve, 4. Flow meter, 5. Cylindrical container, 6. Sealing cover, 7. Filtrate, 8. Sealing liquid, 9. Filtrate discharge valve.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to accompanying drawing 1, this embodiment includes a cylindrical container 5 made of a transparent material that is not corroded by the sampling gas (of course, containers of other shapes can also be used, as long as it meets the requirements of use). The container 5 is provided with at least two inlet pipes 1 and a gas outlet pipe 2 communicated therewith with the same structure;

Described cylindrical container 5 is provided with sealing cover 6, and the height of described sealing cover 6 is lower than the barrel wall of cylindrical container 5, is provided with sealing liquid 8 above described sealing cover 6, and the bottom of cylindrical container 5 is provided with There is filtrate 7;

The air inlet of the air inlet pipe 1 is located outside the cylindrical container 5, and its air outlet is located below the filtrate 7 after the other end passes through the sealing cover 6. The air inlet pipe 1 is provided with a flow regulating valve 3 and a flow meter 4 ;

The gas outlet pipe 2 is installed on the sealing cover 6 , and one end of the gas outlet passes through the sealing cover 6 and the sealing liquid 8 and then extends into the air. The bottom of the cylindrical container 5 is provided with a filtrate discharge valve 9 . The air intake pipe 1 is a U-shaped pipe, and pipes of other shapes can also be used, as long as it meets the requirements of use.

The cylindrical container 5 is an airtight container, and a filtrate 7, such as saturated brine, is housed in the container. The outlet of the air inlet pipe 1 stretches below the liquid level of the filtrate 7, and the air inlet of the gas outlet pipe 2 is positioned above the liquid level of the filtrate 7. The flow meter 4 and the flow regulating valve 3 arranged on the intake pipe 1 can realize flow indication and flow adjustment. Sealing liquid 8 is injected above the sealing cover 6 of the cylindrical container 5 to prevent the leakage of the penetration of the air inlet pipe 1 and the gas outlet pipe 2 and the sealing cover 6 and the junction of the sealing cover 6 and the inner wall of the cylindrical container 5 . The filtrate discharge valve 9 arranged at the bottom is used for discharging and replacing the filtrate.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (2)

1. A mixer for flue gas composition measurement of power plant boilers, characterized in that: it includes a cylindrical container (5) made of a transparent material and a material that is not corroded by the sampling gas, and the cylindrical container (5) There are at least two inlet pipes (1) with the same structure and one gas outlet pipe (2) connected therewith; The cylindrical container (5) is provided with a sealing cover (6), the height of the sealing cover (6) is lower than the barrel wall of the cylindrical container (5), and a sealing cover (6) is provided above the sealing cover (6). liquid (8), the bottom of the cylindrical container (5) is provided with filtrate (7); The air inlet of the air inlet pipe (1) is located outside the cylindrical container (5), the other end of which passes through the sealing cover (6), and its air outlet is located below the filtrate (7). Equipped with a flow regulating valve (3) and a flow meter (4); The gas outlet pipe (2) is installed on the sealing cover (6), and one end of the gas outlet extends into the air after passing through the sealing cover (6) and sealing liquid (8). 2. A mixer for measuring flue gas components of power plant boilers according to claim 1, characterized in that: a filtrate discharge valve (9) is provided at the lower part of the cylindrical container (5).