A small coke oven testing machine reaction furnace and incinerator flue pipe connecting reducing device

Abstract

The utility model relates to a kind of small coke oven testing machine reaction furnace and incinerator flue pipe connecting reducing device, belong to coking test equipment technical field.The device is aimed at the problems such as tar and particulate matter deposition blockage, high test interruption rate, high maintenance cost caused by the excessively thin pipe diameter of existing metal corrugated hose, and a reducing connection scheme is proposed.The utility model mainly consists of reducing joint, conduit flange and bellows, wherein the reducing joint realizes flue diameter expansion by reducing small end and reducing large end.The reducing joint is connected with the reaction furnace exhaust gas discharge port, the conduit flange is fixed with the incinerator tar sedimentation tank, and the bellows realizes sealing connection through two end fastening threads.By increasing the diameter of flue, the risk of tar blockage is significantly reduced, the frequency of manual cleaning is reduced, the efficiency of raw coal gas transmission is improved, the degradation of coke quality caused by backflow is avoided, and the combustion completeness of incinerator is improved, reducing harmful gas emissions.

Description

Technical Field

[0001] This utility model relates to the technical field of coking test equipment, specifically to a variable diameter device for connecting the flue pipes of the reactor and incinerator in a small coke oven test machine, which solves the problem of coking product blockage by increasing the diameter of the flue pipes. Background Technology

[0002] In the coking industry, small coke oven testing machines are key equipment for optimizing coal blending processes and improving coke quality. However, their standard 50mm corrugated metal flue pipes are too narrow, making them prone to blockage by high-viscosity tar and particulate matter during coking, resulting in a test interruption rate as high as 30%. Frequent manual cleaning is required, and incomplete cleaning can easily lead to secondary blockages. Blockages cause raw coal gas to flow back into the reactor, reducing the compressive porosity of the coke and distorting the hot strength test. Simultaneously, the incinerator's low transmission efficiency leads to incomplete combustion, resulting in excessive emissions of harmful gases such as CO and benzene compounds. An additional 15% increase in compressor power is needed to aid combustion, highlighting the conflict between economic efficiency and environmental protection. Existing improvement solutions, such as replacing materials with corrosion-resistant ones and adding ash-removing devices, are limited in effectiveness due to pipe diameter limitations or high costs. An innovative solution that balances high efficiency, low consumption, and compatibility with existing equipment is urgently needed. Utility Model Content

[0003] The purpose of this invention is to provide a variable diameter device for connecting the flue pipes of the reactor and incinerator in a small coke oven test machine, which significantly improves the transmission efficiency of coking products and reduces the risk of blockage.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A variable diameter device for connecting the flue pipes of the reactor and incinerator of a small coke oven test machine includes a variable diameter joint, a guide flange and a bellows.

[0006] The reducing connector includes a reducing pipe, a small reducing end, and a large reducing end. One end of the reducing pipe is provided with a small reducing end, and the other end is provided with a large reducing end. A nut is provided on the small reducing end, and a fastening thread is provided on the large reducing end.

[0007] The conduit flange includes a conduit and a flange. One end of the conduit is provided with a flange fastening thread, and the other end of the conduit is connected to the flange. The flange is provided with flange fixing holes evenly distributed on it.

[0008] The bellows includes a bellows body and a bellows fastening end. The bellows body has bellows fastening ends at both ends. The bellows fastening ends include nuts. One end of the bellows is screwed into a fastening thread, and the other end is screwed into a flange fastening thread.

[0009] Furthermore, the small end of the variable diameter tube includes a variable diameter thin tube and a variable diameter plate I, and the large end of the variable diameter tube includes a variable diameter thick tube and a variable diameter plate II. The variable diameter thin tube, variable diameter plate I, variable diameter tube, variable diameter plate II and variable diameter thick tube are connected in sequence. The end of the variable diameter thin tube away from the variable diameter plate I is provided with a nut I, and the end of the variable diameter thick tube away from the variable diameter plate II is provided with a fastening thread.

[0010] Furthermore, the axes of the variable diameter thin tube, variable diameter tube, and variable diameter thick tube are located on a single line. Both variable diameter plate I and variable diameter plate II are annular. The inner ring of variable diameter plate I is connected to one end of the variable diameter thin tube, and the outer ring of variable diameter plate I is connected to one end of the variable diameter tube. The inner ring of variable diameter plate II is connected to one end of the variable diameter tube, and the outer ring of variable diameter plate II is connected to one end of the variable diameter thick tube.

[0011] Furthermore, a limiting boss I is provided at the end of the variable diameter tube away from the variable diameter plate I. The limiting boss I extends outward along a direction perpendicular to the axis of the variable diameter tube. The side of the limiting boss I near the axis of the tube is inclined. The opening of the limiting boss I is funnel-shaped. A nut I is slidably connected to the variable diameter tube. A nut baffle I is provided at the end of the nut I near the variable diameter tube. The nut baffle I extends towards the variable diameter tube along a direction perpendicular to the axis of the variable diameter tube. The upper edge of the nut baffle I abuts against the lower edge of the limiting boss I.

[0012] Furthermore, the axis of the conduit forms an angle with the plane of the flange.

[0013] Furthermore, the bellows fastening end also includes a limiting boss II, which is provided at both ends of the bellows. The limiting boss II extends outward with the bellows axis as the center. The side of the limiting boss II closest to the pipe axis is inclined. The opening of the limiting boss II is funnel-shaped. Nuts II are connected to both ends of the bellows. Nuts II are slidably connected to the bellows. A nut baffle II is provided at the end of the nut II away from the opening. The nut baffle II extends towards one side of the bellows in a direction perpendicular to the bellows axis. The upper edge of the nut baffle II abuts against the lower edge of the limiting boss II.

[0014] Furthermore, the reducing joint is provided with a nut tightening platform I, which is located on the outer wall of the reducing joint. The nut tightening platform I extends outward in a direction perpendicular to the axis of the reducing joint, and tightening surfaces are evenly distributed on the side of the nut tightening platform I away from the reducing joint.

[0015] Furthermore, the conduit is provided with a nut tightening platform II, which is located on the outer wall of the conduit and extends outward in a direction perpendicular to the axis of the conduit. Tightening surfaces are evenly distributed on the side of the nut tightening platform II away from the conduit.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Significantly reduce the risk of flue blockage: By increasing the diameter of the flue, the deposition of high-viscosity tar and particulate matter in the tube is effectively reduced, the blockage rate is reduced, the test interruption rate is reduced, and the continuity and stability of coking tests are ensured.

[0018] 2. Significantly reduce labor maintenance costs: The original 50mm flue pipe required 1-2 hours of cleaning per test. After adopting this device, the cleaning frequency is reduced to once every 5 tests. The intensity of manual labor is reduced, and the annual maintenance time can be saved by about 200 hours, significantly reducing labor costs.

[0019] 3. Improve the efficiency of coking product transport and incineration: Expanding the pipe diameter increases the raw gas transport rate, improves the combustion completeness in the incinerator 27, reduces CO emissions, lowers the concentration of benzene series compounds, and has significant environmental benefits.

[0020] 4. Improve coke quality and test data reliability: Avoid coke deterioration due to backflow of raw coal gas, reduce the detection error of coke hot strength (CSR, CRI) from 15% to less than 3%, improve the accuracy of test data, and provide a reliable basis for coal blending process optimization. Attached Figure Description

[0021] Figure 1 This is the front view of the reducing joint;

[0022] Figure 2 This is a front sectional view of the reducing joint;

[0023] Figure 3 Isometric drawing of a reducing joint;

[0024] Figure 4 This is the front view of the conduit flange;

[0025] Figure 5 Left view of the conduit flange;

[0026] Figure 6 This is a sectional view of the conduit flange;

[0027] Figure 7 This is the front view of the bellows;

[0028] Figure 8 Left view of the bellows;

[0029] Figure 9 This is a sectional view of the fixed end of the bellows;

[0030] Figure 10 This is an assembly diagram of the present invention;

[0031] In the diagram, 1-reducing connector, 2-reducing pipe, 3-small reducing end, 4-nut I, 401-nut baffle I, 5-reducing thin pipe, 6-reducing plate I, 7-large reducing end, 8-reducing thick pipe, 9-reducing plate II, 10-fastening thread, 11-limiting boss I, 12-nut tightening table I, 13-tightening face, 14-conduit flange, 15-conduit, 16-flange fastening thread, 17-flange, 18-flange fixing hole, 19-nut tightening table II, 20-bellows, 21-bellows body, 22-bellows fastening end, 23-nut II, 2301-nut baffle II, 24-limiting boss II, 25-small coke oven reactor, 26-exhaust gas discharge port, 27-incinerator, 28-tar sedimentation tank. Detailed Implementation

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0033] like Figure 1-10 As shown, a small coke oven test machine reactor and incinerator flue gas pipe connecting diameter reducing device includes a reducing joint 1, a conduit flange 14 and a bellows 20. The reducing joint 1 and the conduit flange 14 are both made of GH2520 heat-resistant high-temperature alloy steel, and the bellows 20 is about 3m long.

[0034] The reducing connector 1 includes a reducing pipe 2, a small reducing end 3, and a large reducing end 7. One end of the reducing pipe 2 has the small reducing end 3, which includes a 50mm diameter reducing thin pipe 5 and a reducing plate I 6. The other end has the large reducing end 7, which includes an 80mm diameter reducing thick pipe 8 and a reducing plate II 9. The reducing thin pipe 5, reducing plate I 6, reducing pipe 2, reducing plate II 9, and reducing thick pipe 8 are connected sequentially. The axes of the reducing thin pipe 5, reducing pipe 2, and reducing thick pipe 8 are on a single line. The specifications of the reducing thin pipe 5 and reducing thick pipe 8 can be changed according to actual production needs. Reducing plates I 6 and II 9 are both annular. The inner ring of reducing plate I 6 connects to one end of the reducing thin pipe 5, and the outer ring of reducing plate I 6 connects to one end of the reducing pipe 2. The inner ring of reducing plate II 9 connects to one end of the reducing pipe 2, and the outer ring of reducing plate II 9 connects to one end of the reducing thick pipe 8.

[0035] The reducing tube 5, which is away from the reducing plate I6, is provided with a nut I4, which is a hexagonal nut. The reducing tube 8, which is away from the reducing plate II9, is provided with a fastening thread 10. A limiting boss I11 is provided at the end of the reducing cap 5 away from the reducing plate I6. The limiting boss I11 extends outward along the direction perpendicular to the axis of the reducing cap 5. The side of the limiting boss I11 near the axis of the pipe is inclined. The opening of the limiting boss I11 is funnel-shaped. A nut I4 is slidably connected to the reducing cap 5. A nut baffle I401 is provided at the end of the nut I4 near the reducing pipe 2. The nut baffle I401 extends towards the reducing cap 5 along the direction perpendicular to the axis of the reducing cap 5. The upper edge of the nut baffle I401 abuts against the lower edge of the limiting boss I11. The nut I4 can slide along the reducing cap 5 and can rotate freely in the reducing cap 5. When installing the reducing connector 1, first align the limiting boss I11 with the exhaust port 26, then slide and rotate the nut I4 towards the installation location to screw the nut I4 to the exhaust port 26. The reducing joint 1 is provided with a nut tightening platform I12, which enables the wrench to clamp and fix the reducing joint 1. The nut tightening platform I12 is arranged around the outer wall of the reducing joint 1. The nut tightening platform I12 extends outward along the direction perpendicular to the axis of the reducing joint 1. Ten tightening surfaces 13 are evenly distributed on the side of the nut tightening platform I12 away from the reducing joint 1.

[0036] The conduit flange 14 includes a conduit 15 and a flange 17. One end of the conduit 15 is provided with a flange fastening thread 16, and the other end of the conduit 15 is connected to the flange 17. The axis of the conduit 15 forms an angle with the plane of the flange 17. During installation, the opening of the conduit 15 faces obliquely upwards to facilitate the connection of the bellows 20. The flange 17 is provided with flange fixing holes 18 evenly distributed. The conduit 15 is provided with a nut tightening platform II 19, which allows a wrench to clamp and fix the conduit flange 14. The nut tightening platform II 19 is arranged around the outer wall of the conduit 15 and extends outwards in a direction perpendicular to the axis of the conduit 15. Ten tightening surfaces 13 are evenly distributed on the side of the nut tightening platform II 19 away from the conduit 15.

[0037] The bellows 20 includes a bellows body 21 and bellows fastening ends 22. The bellows body 21 can be an existing bellows 20, modified at both ends. Bellows fastening ends 22 are provided at both ends of the bellows body 21; one end is screwed to a fastening thread 10, and the other end is screwed to a flange fastening thread 16. The bellows fastening ends 22 include nuts and limiting bosses II 24. The limiting bosses II 24 are located at both ends of the bellows 20, extending outwards from the axis of the bellows 20. The side of the limiting bosses II 24 closest to the pipe axis is inclined, and the opening of the limiting bosses II 24 is funnel-shaped. Nuts II 23 are connected to both ends of the bellows 20, and the nuts II 23 are slidably connected to the bellows 20. Nuts II 23 are ten-pointed nuts. A nut baffle II 2301 is provided at the end of the nut II 23 furthest from the opening. The nut baffle II 2301 is perpendicular to the opening. Extending along the axial direction of the bellows 20 to one side of the bellows 20, the upper edge of the nut baffle II 2301 abuts against the lower edge of the limiting boss II 24. The nut II 23 can slide along the end of the bellows 20 and can rotate freely at the end of the bellows 20. When installing the bellows 20, first align the bellows fastening end 22 with the fastening thread 10 or the flange fastening thread 16. Then, when installing the fastening thread 10 or the flange fastening thread 16, slide and rotate the nut II 23 to screw the nut II 23 with the fastening thread 10 or the flange fastening thread 16.

[0038] The usage process of the variable diameter device for connecting the flue pipes of the small coke oven test machine reactor and the incinerator provided by this utility model is as follows: During use, the smaller end 3 of the variable diameter device is tightened and installed to the exhaust port 26 of the 40kg small coke oven reactor 25. During installation, the limiting boss I11 is aligned with the exhaust port 26 of the 40kg small coke oven reactor 25. A wrench is used to move the nut I4 toward the reactor exhaust port 26 and then rotates to tighten it. Then, the conduit flange 14 is installed to the tar settling tank 28 of the incinerator 27, aligned with the flange fixing hole 18. The conduit 15 opening is kept facing upwards at an angle. The original screw and nut are used to tighten the flange 17 to the tar settling tank 28. Then align the limiting boss II 24 at one end of the bellows 20 with the reducing pipe 8 and bring it close to the fastening thread 10. Then use a special fastening wrench to tighten the nut II 23 to the fastening thread 10. Next, align the limiting boss II 24 at the other end of the bellows 20 with the flange fastening thread 16 and bring it close to the fastening thread 10. Then use a special fastening wrench to tighten the nut II to the flange fastening thread 16.

Claims

1. A variable diameter device for connecting the flue pipes of the reactor and incinerator in a small coke oven testing machine, characterized in that, Includes reducing fitting (1), conduit flange (14) and bellows (20); The reducing connector (1) includes a reducing pipe (2), a reducing small end (3) and a reducing large end (7). One end of the reducing pipe (2) is provided with a reducing small end (3) and the other end is provided with a reducing large end (7). A nut is provided on the reducing small end (3) and a fastening thread (10) is provided on the reducing large end (7). The conduit flange (14) includes a conduit (15) and a flange (17). One end of the conduit (15) is provided with a flange fastening thread (16), and the other end of the conduit (15) is connected to the flange (17). Flange fixing holes (18) are evenly distributed on the flange (17). The bellows (20) includes a bellows body (21) and a bellows fastening end (22). The bellows body (21) has bellows fastening ends (22) at both ends. The bellows fastening end (22) includes a nut. One end of the bellows (20) is screwed to a fastening thread (10), and the other end is screwed to a flange fastening thread (16).

2. The variable diameter device for connecting the flue pipes of the reactor and incinerator in a small coke oven testing machine according to claim 1, characterized in that, The small end (3) of the variable diameter includes a thin tube (5) and a variable plate I (6), and the large end (7) of the variable diameter includes a thick tube (8) and a variable plate II (9). The thin tube (5), the variable plate I (6), the variable tube (2), the variable plate II (9) and the thick tube (8) are connected in sequence. The end of the thin tube (5) away from the variable plate I (6) is provided with a nut I (4), and the end of the thick tube (8) away from the variable plate II (9) is provided with a fastening thread (10).

3. The variable diameter device for connecting the flue pipes of the reactor and incinerator in a small coke oven testing machine according to claim 2, characterized in that, The axes of the variable diameter thin tube (5), variable diameter tube (2), and variable diameter thick tube (8) are located on the same line. The variable diameter plate I (6) and variable diameter plate II (9) are both annular. The inner ring of the variable diameter plate I (6) is connected to one end of the variable diameter thin tube (5), and the outer ring of the variable diameter plate I (6) is connected to one end of the variable diameter tube (2). The inner ring of the variable diameter plate II (9) is connected to one end of the variable diameter tube (2), and the outer ring of the variable diameter plate II (9) is connected to one end of the variable diameter thick tube (8).

4. The variable diameter device for connecting the flue pipes of the reactor and incinerator in a small coke oven testing machine according to claim 3, characterized in that, The variable diameter tube (5) is provided with a limiting boss I (11) at the end away from the variable diameter plate I (6). The limiting boss I (11) extends outward along the direction perpendicular to the axis of the variable diameter tube (5). The side of the limiting boss I (11) near the axis of the pipe is inclined. The opening of the limiting boss I (11) is funnel-shaped. A nut I (4) is slidably connected on the variable diameter tube (5). A nut baffle I (401) is provided at the end of the nut I (4) near the variable diameter tube (2). The nut baffle I (401) extends towards the side of the variable diameter tube (5) perpendicular to the axis of the variable diameter tube (5). The upper edge of the nut baffle I (401) abuts against the lower edge of the limiting boss I (11).

5. The variable diameter device for connecting the flue gas pipes of the reactor and incinerator in a small coke oven testing machine according to claim 4, characterized in that, The axis of the conduit (15) forms an angle with the plane of the flange (17).

6. The variable diameter device for connecting the flue pipes of the reactor and incinerator in a small coke oven testing machine according to claim 5, characterized in that, The corrugated pipe fastening end (22) also includes a limiting boss II (24). The limiting boss II (24) is located at both ends of the corrugated pipe (20). The limiting boss II (24) extends outward with the axis of the corrugated pipe (20) as the center. The side of the limiting boss II (24) near the pipe axis is inclined. The opening of the limiting boss II (24) is funnel-shaped. Nuts II (23) are connected to both ends of the corrugated pipe (20). Nuts II (23) are slidably connected to the corrugated pipe (20). Nut baffle II (2301) is provided at the end of the nut II (23) away from the opening. Nut baffle II (2301) extends towards the corrugated pipe (20) in a direction perpendicular to the axis of the corrugated pipe (20). The upper edge of nut baffle II (2301) abuts against the lower edge of the limiting boss II (24).

7. The variable diameter device for connecting the flue pipes of the reactor and incinerator in a small coke oven testing machine according to claim 6, characterized in that, The reducing joint (1) is provided with a nut tightening platform I (12), which is located on the outer wall of the reducing joint (1). The nut tightening platform I (12) extends outward along the direction perpendicular to the axis of the reducing joint (1), and tightening surfaces (13) are evenly distributed on the side of the nut tightening platform I (12) away from the reducing joint (1).

8. The variable diameter device for connecting the flue pipes of the reactor and incinerator in a small coke oven testing machine according to claim 7, characterized in that, The conduit (15) is provided with a nut wrench II (19), which is located on the outer wall of the conduit (15). The nut wrench II (19) extends outward along a direction perpendicular to the axis of the conduit (15), and the nut wrench II (19) is provided with a wrench surface (13) evenly distributed on the side of the nut wrench II (19) away from the conduit (15).

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