Laser analyzer device for flue

Abstract

The utility model relates to the field of flue gas analysis. A laser analyzer device for a flue is characterized in that two short pipes, namely a left guide pipe and a right guide pipe which are communicated with the interior of the flue are symmetrically welded on two sides of the flue, a left valve is mounted on the left guide pipe, a right valve is mounted on the right guide pipe, the inner diameters of the left guide pipe and the right guide pipe are the same, and the center lines of the left guide pipe and the right guide pipe coincide; the left end of the left guide pipe is connected with one end of a first composite double-layer isolation type window flange 3, the other end of the first composite double-layer isolation type window flange is connected with the transmitting end of a laser device through a left reducer pipe, and the right end of the right guide pipe is connected with one end of a second composite double-layer isolation type window flange. The other end of the second composite double-layer isolation type window flange is connected with a laser device receiving end through the right reducer pipe, the first composite double-layer isolation type window flange and the second composite double-layer isolation type window flange are of a symmetrical structure, and the left reducer pipe and the right reducer pipe are of a symmetrical structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of flue gas analysis. BACKGROUND

[0002] The steel mill adopts laser analyzer to analyze the gas in the flue, and in the use process, the common single flange is generally used to connect with the flue gas pipeline. When maintaining and troubleshooting, the manual valve connected with the pipeline needs to be closed, and when the manual valve is not tightly sealed, it will cause dust, water vapor and coal gas leakage, and there is a safety hazard. In addition, in the converter production process, the laser analyzer has low transmission rate, after the laser analyzer is removed, the flanges of the emission end and the receiving end cannot complete the laser focusing adjustment work, and the laser adjustment work can only be carried out after the furnace is stopped for maintenance; during this period, the coal gas recovery cannot be carried out, which seriously affects the amount of converter coal gas recovery. UTILITY MODEL CONTENT

[0003] The technical problem to be solved by the utility model is to provide a laser analyzer device which is convenient to disassemble and can be disassembled without closing the manual valve.

[0004] The technical scheme adopted by the utility model is: a laser analyzer device for a flue, two short pipes, namely a left guide pipe 4 and a right guide pipe 6, which are connected with the inside of the flue 5 in a symmetrical structure and are welded, a left valve 10 is installed on the left guide pipe 4, a right valve 11 is installed on the right guide pipe 6, the left guide pipe 4 and the right guide pipe 6 have the same inner diameter and the center lines thereof coincide, a left end of the left guide pipe 4 is connected with one end of a first composite double-layer isolation type window flange 3, the other end of the first composite double-layer isolation type window flange 3 is connected with a laser device emission end 1 through a left reducing pipe 2, a right end of the right guide pipe 6 is connected with one end of a second composite double-layer isolation type window flange 7, the other end of the second composite double-layer isolation type window flange 7 is connected with a laser device receiving end 9 through a right reducing pipe 8, the first composite double-layer isolation type window flange 3 and the second composite double-layer isolation type window flange 7 are in a symmetrical structure, and the left reducing pipe 2 and the right reducing pipe 8 are in a symmetrical structure.

[0005] The left guide pipe 4 and the first composite double-layer isolation type window flange 3 are connected through threads, and the right guide pipe 6 and the second composite double-layer isolation type window flange 7 are connected through threads.

[0006] The first composite double-layer isolated window flange 3 comprises a common single flange 31, a gasket 32 and a glass-sealed central isolation flange 33 connected in sequence, one end of the common single flange 31 is matched with one end of the left guide pipe 4, one end of the glass-sealed central isolation flange 33 is matched with one end of the left reducing pipe 2, and the other end of the glass-sealed central isolation flange 33 is matched with the other end of the common single flange 31.

[0007] The utility model discloses the beneficial effects are: make maintenance or failure when laser analysis instrument dismount convenient and fast, the original replacement 1 set of flue gas analyzer needs 3 hours, if laser transmission rate adjustment does not come out, will use longer time, seriously restricts the normal operation of converter gas recovery system, and laser analysis instrument window is contacted with dust, water vapor, coal gas in flue gas for a long time, can cause the attenuation or damp of laser analysis instrument internal laser, cannot normally use. Now replacement 1 set of flue gas analyzer's time needs 5 minutes, saves a lot of time, guarantees the normal operation of converter of steel plant's flue gas analyzer and the normal coal gas recovery. Two composite double-layer isolated window flanges effectively prevent water vapor, dust, dirt from adhering to the lens of the laser analysis instrument, and effectively prevent the risk of coal gas leakage. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is the overall structure schematic diagram of the utility model;

[0009] Figure 2 It is the structure schematic diagram of the first composite double-layer isolated window flange;

[0010] Figure 3 It is the installation schematic diagram of prior art laser analysis instrument;

[0011] 1, laser device emitting end, 2, left reducing pipe, 3, first composite double-layer isolated window flange, 4, left guide pipe, 5, flue, 6, right guide pipe, 7, second composite double-layer isolated window flange, 8, right reducing pipe, 9, laser device receiving end, 10, left valve, 11, right valve, 31, common single flange, 32, gasket, 33, glass-sealed central isolation flange. DETAILED DESCRIPTION

[0012] As Figure 1 And 3As shown, in the prior art, a laser analyzer device for a flue, two short pipes, i.e., a left guide pipe 4 and a right guide pipe 6, which are in communication with the inside of the flue 5, are symmetrically welded on both sides of the flue 5, a left valve 10 is installed on the left guide pipe 4, and a right valve 11 is installed on the right guide pipe 6, the left guide pipe 4 and the right guide pipe 6 have the same inner diameter and the same center line, the left guide pipe 4 is connected with a left reducing pipe 2 through a common single flange 31, a laser device emitting end 1 is installed on the left reducing pipe 2, the right guide pipe 6 is connected with a right reducing pipe 8 through the common single flange 31, and a laser device receiving end 9 is installed on the right reducing pipe 8. When the laser device emitting end 1 and / or the laser device receiving end 9 need to be disassembled due to a fault, the left valve 10 and / or the right valve 11 need to be closed. When the left valve 10 and / or the right valve 11 are not tightly sealed, the disassembly of the laser device emitting end 1 and / or the laser device receiving end 9 will cause dust, water vapor and coal gas leakage, and there is a certain safety hazard. In addition, in the production process of the converter, the transmission rate of the laser analyzer is low, after the laser analyzer is disassembled, the flanges of the emitting end and the receiving end cannot complete the laser focusing adjustment work, and the laser adjustment work can only be carried out after the furnace is stopped for maintenance; during this period, coal gas recovery cannot be carried out, which seriously affects the amount of coal gas recovery of the converter.

[0013] The utility model discloses on the prior art improvement, mainly in the left reducing pipe 2 and left guide pipe between common single flange 31 is replaced for first composite double -deck isolated type window flange 3, right guide pipe 6 and right reducing pipe between common single flange 31 is replaced for second composite double -deck isolated type window flange 7. First composite double -deck isolated type window flange 3 and second composite double -deck isolated type window flange 7 symmetry structure.

[0014] The utility model discloses through improving composite double -deck isolated type window flange, can when disassembling first composite double -deck isolated type window flange 3 and second composite double -deck isolated type window flange 7 in the production process, need not close manual valve (left valve and right valve). Composite double -deck isolated type window flange and flue sampling flange have graphite pad seal, bolt connection. Will not cause the risk of dust, water vapor and coal gas leakage in the flue.

Claims

1. A laser analyzer device for flue, two short pipes, i.e. left guide pipe (4) and right guide pipe (6), which are symmetrical with the flue (5) and are welded to the flue (5) and are communicated with the inside of the flue (5), are welded on both sides of the flue (5), the left valve (10) is installed on the left guide pipe (4), the right valve (11) is installed on the right guide pipe (6), the left guide pipe (4) and the right guide pipe (6) have the same inner diameter and the center lines coincide, characterized in that: The left end of the left guide tube (4) is connected with one end of the first composite double-layer isolated window flange (3), the other end of the first composite double-layer isolated window flange (3) is connected with the laser device emitting end (1) through the left reducing pipe (2), the right end of the right guide tube (6) is connected with one end of the second composite double-layer isolated window flange (7), the other end of the second composite double-layer isolated window flange (7) is connected with the laser device receiving end (9) through the right reducing pipe (8), the first composite double-layer isolated window flange (3) and the second composite double-layer isolated window flange (7) are in symmetrical structure, and the left reducing pipe (2) and the right reducing pipe (8) are in symmetrical structure.

2. A laser analyser apparatus for flues as claimed in claim 1 characterised in that: The left guide tube (4) is connected with the first composite double-layer isolated window flange (3) through threads, and the right guide tube (6) is connected with the second composite double-layer isolated window flange (7) through threads.

3. A laser analyser apparatus for flues as claimed in claim 1 characterised by: The first composite double-layer isolated window flange (3) comprises a common single-piece flange (31), a gasket (32) and a central glass-sealed isolation flange (33) connected in sequence, one end port of the common single-piece flange (31) is matched with one end port of the left guide tube (4), one end port of the central glass-sealed isolation flange (33) is matched with one end port of the left reducing pipe (2), and the other end port of the central glass-sealed isolation flange (33) is matched with the other end port of the common single-piece flange (31).

Images