A new type of dilution probe in flue

Abstract

A new type of flue inside dilution probe, the existing probe sound speed critical small hole is located inside the chamber and is integrated with the chamber. During operation, if the ash amount is too large, the filtering effect of the quartz wool is reduced, and the small hole is easily blocked. The small hole is inside, and it is very difficult to clean and is easily broken. The utility model discloses a sound speed small hole, the sound speed small hole is inserted in the pipe joint piece through the peripheral sheath, the left end of the pipe joint piece is connected with the tail joint threadedly, the right end is connected with the head joint threadedly, the head joint is connected with the variable diameter sleeve joint threadedly, and the variable diameter sleeve joint is connected with the graphite sleeve threadedly. The utility model is used for the dilution system of a power plant.

Description

Technical Field

[0001] This utility model relates to a novel dilution probe for flues. Technical Background

[0002] The dilution system samples through a sonic orifice inside the sampling probe and dilutes it using dry, instrument-compressed air. Currently, the sonic critical orifice of the probe is located inside the chamber and is an integral part of the chamber structure. During operation, if the ash volume is too high, the quartz wool filtration effect decreases, easily leading to orifice blockage. The orifice is located internally, making cleaning extremely difficult. Furthermore, because the sonic orifice is made of heat-resistant glass and ceramic, excessive temperature differences between the indoor and outdoor environments during actual operation may cause it to break. Additionally, strict control of force is required during joint tightening; excessive force can cause breakage, while insufficient force will not achieve a seal. During disassembly and maintenance, the impact force must be carefully controlled to avoid breakage. Finally, the cleaning and maintenance methods are limited.

[0003] In summary, a new type of dilution probe for flue gas ducts is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the sonic pinhole is easily broken during operation due to material issues, and to provide a new type of dilution probe for flue gas.

[0005] To address the aforementioned shortcomings, this utility model adopts the following technical solution: A novel dilution probe for flue gas ducts comprises: a sonic aperture, which is inserted into a pipe fitting through an outer sheath; the left end of the pipe fitting is threadedly connected to a tail connector, and the right end is threadedly connected to a head connector; the head connector is threadedly connected to a variable diameter ferrule connector, and the variable diameter ferrule connector is threadedly connected to a graphite ferrule.

[0006] The novel dilution probe for flue gas ducts is described above, wherein the graphite ferrule is a hollow tube structure filled with quartz wool. Beneficial effects

[0007] 1. This utility model has a split structure, which is easy to disassemble and clean, and greatly reduces the problems of the sonic pore being difficult to clean and easily broken during cleaning.

[0008] 2. The outer sheath of this utility model is used to fix and protect the sonic aperture, and prevent the sonic aperture from breaking.

[0009] 3. The tail connector, head connector, reducing ferrule connector and graphite ferrule of this utility model are all made of 316L stainless steel, which can withstand high temperature of 1200℃~1300℃, and has good corrosion resistance and high temperature resistance, reducing the occurrence of sonic pinhole breakage due to large temperature difference between indoor and outdoor in winter.

[0010] 4. This utility model uses stainless steel as the chamber, which greatly reduces the manufacturing cost. The combination of the stainless steel chamber and the sonic aperture reduces the risk of the sonic aperture breaking, which greatly extends the service life of the probe and reduces the frequency of probe procurement. Attached Figure Description

[0011] Appendix Figure 1 This is the front view of this utility model; Appendix Figure 2 This is the main view of the pipe fitting of this utility model; Appendix Figure 3 This is a front view of the head connector of this utility model; Appendix Figure 4 This is the main view of the variable diameter compression fitting of this utility model; Appendix Figure 5 This is the main view of the graphite card sleeve of this utility model; Appendix Figure 6 This is a view of the sonic pinhole and the outer sheath of this utility model; In the diagram: 1. Sonic orifice; 2. Outer sheath; 3. Variable diameter ferrule fitting; 4. Pipe fitting; 5. Head fitting; 6. Graphite ferrule; 7. Quartz wool; 8. Tail fitting. Detailed Implementation

[0012] Reference Figures 1-6 A novel dilution probe for flue gas ducts comprises: a sonic aperture 1, which is inserted into a pipe fitting 4 through an outer sheath 2; the left end of the pipe fitting is threaded to a tail fitting 8, and the right end is threaded to a head fitting 5; the head fitting is threaded to a variable diameter ferrule fitting 3; and the variable diameter ferrule fitting is threaded to a graphite ferrule 6.

[0013] The graphite ferrule is a hollow tube structure, and its interior is filled with quartz wool 7.

[0014] The aforementioned pipe fittings, flue gas filters, reducing ferrule fittings, and graphite ferrules are made of 316L stainless steel.

[0015] The tail connector, pipe fitting, reducing ferrule connector, and graphite ferrule are hollow inside, forming a cavity. The sonic orifice is fixed to the outer sheath at the hollow position inside where the threads of the tail connector and pipe fitting intersect.

[0016] The sonic orifice is made of glass or ceramic, which is easily broken. A cavity can be formed around the sonic orifice through the pipe fitting, tail fitting, reducing ferrule fitting, and graphite ferrule to protect the sonic orifice. When cleaning is required, unscrew the screws of the pipe fitting and tail fitting, remove the sonic orifice, and then use an ultrasonic cleaner to clean the orifice. After cleaning, use a bulb syringe to check whether the orifice is unobstructed.

[0017] The outer sheath serves to fix and protect the sonic pinhole from breakage.

Claims

1. A novel dilution probe for flue gas ducts, characterized in that: Its components include: a sonic orifice, which is inserted into the pipe fitting through an outer sheath; the left end of the pipe fitting is threadedly connected to the tail fitting, and the right end is threadedly connected to the head fitting; the head fitting is threadedly connected to the reducing ferrule fitting, and the reducing ferrule fitting is threadedly connected to the graphite ferrule.

2. The novel dilution probe for flue gas ducts according to claim 1, characterized in that: The graphite ferrule has a hollow tube structure and is filled with quartz wool.

Images