Overheating pipeline limiting device of gasifier superheater

Abstract

The utility model relates to a gasifier superheater overheating pipeline limiting device which comprises a first limiting block and a second limiting block, and the first limiting block and the second limiting block are fixed to two adjacent pipe bodies of a pipeline respectively. One end of the first limiting block is connected with the outer surface of a pipe body of the pipeline, the other end of the first limiting block is suspended, and a rectangular protruding block is fixed to the suspended end of the first limiting block. One end of the second limiting block is connected with the outer surface of the pipe body of the pipeline, the other end of the second limiting block is suspended, and a groove matched with the rectangular protruding block of the first limiting block is formed in the suspended end of the second limiting block. The rectangular protruding block of the first limiting block is in clearance fit with the rectangular groove of the second limiting block. The limiting block I and the limiting block II which are in clearance fit are fixed between the coil pipes, so that up-down free thermal expansion of the coil pipe body is ensured, and meanwhile, the radial expansion and vibration amplitude of the superheater coil pipe body are limited.

Description

TECHNICAL FIELD

[0001] The utility model relates to gasification furnace equipment technical field especially relates to a gasification furnace superheater overheating pipeline stop device. BACKGROUND

[0002] The gasification furnace superheater mainly functions is through the overheating spiral pipe that the 271 DEG C saturated steam of steam pocket generates is heated to 400 DEG C, forms the overheated steam, simultaneously, the synthetic gas that the gasification furnace generates is fully heat exchange, reaches the high -efficient utilization of gasification furnace heat energy. In the long -term operation, the overheating pipe line of overheating disc pipe of superheater is heated expansion, the clearance between the pipe body of pipeline gradually becomes small, the stress and wear and tear fatigue effect between overheating disc pipe line of superheater makes the wear and tear or crack on the pipe body. Once the crack breaks and appears the leakage, will gather the ash block at the overheating spiral disc pipe, reduce the through -flow area, increase the gas flow velocity, intensify the disc pipe scouring wear and tear, lead to the serious reduction of heat exchange efficiency, the superheater cannot operate because of internal ash deposit, etc. Problem, the leakage leakage point position is narrow, cannot carry out effective elimination leakage point, can only replace the broken pipe by cutting pipeline, seriously influence the safe and stable operation of gasification furnace. SUMMARY

[0003] The utility model discloses to solve the problem that the clearance between the pipe body of overheating disc pipe of gasification furnace superheater gradually becomes small after the heat expansion, the stress and wear and tear fatigue effect between overheating disc pipe line of superheater makes the wear and tear or crack on the pipe body, the leakage leakage point position is narrow, cannot carry out effective elimination leakage point, provide a kind of gasification furnace superheater overheating pipeline stop device. Increase limit block one and limit block two between overheating pipe line of superheater, limit the heat expansion of superheater pipeline radial by limit block one and limit block two, the axial expansion amount of two pipe bodies is slid freely between limit block one and limit block two, avoid the wear and tear leakage of overheating spiral disc pipe vertical pipe due to heat expansion after the clearance is too small in operation;It improves the safety, reliability and stability of gasification furnace operation.

[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0005] A kind of gasification furnace superheater overheating pipeline stop device, including limit block one and limit block two, the limit block one and limit block two are respectively fixed on two adjacent pipe bodies in overheating pipe line;

[0006] The one end of the limit block one is connected to the outer surface of one of the pipe bodies, and the other end is suspended, and a rectangular protrusion is fixed to the end of the suspended end of the limit block one;

[0007] The one end of the limit block two is connected to the outer surface of the other pipe body, and the other end is suspended, and a groove is formed in the end of the limit block two, which cooperates with the rectangular protrusion of the limit block one;

[0008] The rectangular protrusion of the limit block one cooperates with the groove of the limit block two.

[0009] Further, the limiting block one and the limiting block two are both made of incoloy825 material. The high-temperature resistance and corrosion resistance are strong, and the service life of the limiting block one and the limiting block two is enhanced.

[0010] Further, the gap between the matching surfaces of the limiting block one and the limiting block two is less than or equal to 0.2 mm. The expansion range between the superheater spiral coil pipelines is limited in a small range, and the reasonable thermal expansion gap between the coil pipelines is ensured.

[0011] Further, the length of the limiting block one and the limiting block two is greater than or equal to 100 mm.

[0012] Further, the two pipe bodies are straight pipe sections in the superheater pipelines.

[0013] Further, the connecting positions between the limiting block one, the limiting block two and the pipe body are fixed by welding.

[0014] Further, the limiting block one and the limiting block two are arranged in close contact with the pipelines, and bevels are arranged on both sides of the connecting position between the limiting block one, the limiting block two and the pipe body. While the welding strength of the weld is ensured, the deformation caused after welding is reduced.

[0015] Further, the limiting block one and the limiting block two are connected with the outer surface of the pipe body through the connecting device. The limiting block one and the limiting block two can be detachably connected to the pipe body through the connecting device, and can be repeatedly used to increase the service life.

[0016] Further, the connecting device comprises a fixing piece, a spring and a connecting piece. The two fixing pieces are connected through the spring. The two fixing pieces and the spring are arranged in a U shape on the outer wall of the pipe body. The connecting piece is in a π shape structure. The plane of the connecting piece is fixedly connected with the limiting block one or the limiting block two. The two ends of the connecting piece are connected with the two fixing pieces, so that the connecting piece, the two fixing pieces and the spring are sleeved and fixed on the pipe body. The limiting block one or the limiting block two is fixed to the pipe body through the connecting piece and the fixing piece. Meanwhile, the spring can be arranged to expand and open the connecting device with the pipe body when the pipe body expands, so as to prevent the connecting device from being broken due to the increased pressure of the pipe body after the pipe body expands.

[0017] Further, the ends of the two fixing pieces away from the spring are fixed with studs. The studs are suspended after penetrating through the connecting piece. The suspended ends of the two studs are provided with fixing blocks. The connecting piece, the two fixing pieces and the spring are sleeved on the pipe body through the connection of the fixing blocks, the limiting nuts and the studs.

[0018] Through the above technical scheme, the beneficial effects of the utility model are as follows:

[0019] The utility model discloses a limiting block one and limiting block two are connected between pipeline gap fit, limit the radial expansion and expansion amplitude of superheater coil, guarantee the axial expansion amount of superheater pipeline to go up and down free thermal expansion through limiting block one and limiting block two, the utility model discloses two kinds of connecting mode make limiting block one, limiting block two fixed to the tuber of pipeline, one is through limiting block one, limiting block two and tuber welding, limiting block one, limiting block two adhere to tuber setting, increase the reliability of connection, and the both sides of limiting block one and limiting block two are provided with the bevel, guarantee the welding strength of weld at the same time, reduce the deformation after welding, another is through connecting device and make limiting block one and limiting block two set up between tuber, and connecting device is through connecting piece, fixed part and spring cover to tuber, convenient to reuse, increase the service life of limiting block one and limiting block two, through spring and connect two fixed parts, and it is convenient for connecting device to open with the expansion of tuber, prevents the connecting device from pressing tuber and causing tuber fracture when tuber expands. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the front view of limiting block one and limiting block two of the limiting device of the superheating pipeline of the superheater of the gasification furnace of the utility model.

[0021] Figure 2 It is the plan view of limiting block one and limiting block two of the limiting device of the superheating pipeline of the superheater of the gasification furnace of the utility model.

[0022] Figure 3 It is the installation structure schematic diagram when limiting block one and limiting block two of the limiting device of the superheating pipeline of the superheater of the gasification furnace of the utility model are welded to tuber.

[0023] Figure 4 It is the installation structure schematic diagram of limiting block one, limiting block two, connecting device and tuber of the limiting device of the superheating pipeline of the superheater of the gasification furnace of the utility model.

[0024] The sign in the drawing is: 1, limiting block one, 2, limiting block two, 3, bevel, 4, coil, 5, connecting piece, 6, fixed part, 7, spring, 8, fixed block, 9, stud. DETAILED DESCRIPTION

[0025] The specific embodiment of the utility model is described in detail as follows in combination with the drawings:

[0026] Example one: as Figures 1-3As shown, a gasifier superheater superheated pipeline limiting device, including limiting block one 1 and limiting block two 2, the limiting block one 1 and limiting block two 2 are fixed on the outer surface of the adjacent two pipe bodies 4 in the straight pipe section of the superheated pipeline respectively; limiting block one 1 and limiting block two 2 are oppositely arranged. The one end of the limiting block one 1 is connected with the outer surface of one of the pipe bodies 4, and the other end is suspended, and the end of the suspended end of the limiting block one 1 is fixed with a rectangular protrusion; the one end of the limiting block two 2 is connected with the outer surface of the other pipe body 4, and the other end is suspended, and the end of the suspended end of the limiting block two 2 is provided with a groove matched with the rectangular protrusion of the limiting block one 1; the rectangular protrusion of the limiting block one 1 and the groove of the limiting block two 2 are gap matched. Ensure the axial up and down free thermal expansion of the coil pipe body 4, at the same time, limit the radial expansion and vibration amplitude of the superheater coil pipe body 4,

[0027] The rectangular protrusion of the limiting block one 1 and the rectangular groove of the limiting block two 2 are gap matched. The gap between the matching surfaces of the limiting block one 1 and the limiting block two 2 is less than or equal to 0.2mm. It is ensured that the up and down free thermal expansion of the coil pipe body 4 is ensured, and at the same time, the expansion amplitude of the superheater spiral coil pipe body 4 is limited in a smaller range, and the thermal expansion gap between the coil pipe bodies 4 is controlled within a reasonable range. Further, the limiting block one 1 and the limiting block two 2 are both made of incoloy825 material. It is high temperature resistant and corrosion resistant, which enhances the service life of the limiting block one 1 and the limiting block two 2. The length of the limiting block one 1 and the limiting block two 2 is greater than or equal to 100mm. It ensures the strength and sliding stroke of the limiting block one 1 and the limiting block two 2.

[0028] In order to further optimize the product structure and ensure the reliability of the connection between the limiting block one 1, the limiting block two 2 and the pipe body 4, the limiting block one 1 and the limiting block two 2 in the embodiment are fixed with the pipe body 4 by welding. The limiting block one 1 and the limiting block two 2 are arranged in close contact with the pipeline; the two sides of the connection between the limiting block one 1 and the limiting block two 2 and the pipe body 4 are provided with a bevel 3, which reduces the deformation caused by welding while ensuring the welding strength of the weld.

[0029] Embodiment 2: Embodiment 2 and embodiment 1 have basically the same structure, and the same parts will not be repeated. The difference is that, as shown in Figure 4 In this embodiment, the limiting block one 1 and the limiting block two 2 are connected with the outer surface of the pipe body 4 through the connecting device. By setting the connecting device, the limiting block one 1 and the limiting block two 2 can be detachably connected to the pipe body 4, which can be reused and increase the service life.

[0030] Specifically, the connecting device comprises two fixing members 6, a spring 7 and a connecting member 5, the two fixing members 6 are connected by the spring 7, the two fixing members 6 and the spring 7 are arranged on the outer wall of the pipe body 4 in a U shape, the connecting member 5 is in a "π" shape, the plane of the connecting member 5 is connected with the limiting block one 1 or the limiting block two 2, the two ends of the connecting member 5 are connected with the two fixing members 6 respectively, so that the connecting member 5 and the two fixing members 6 are sleeved and fixed on the pipe body 4. The limiting block one 1 or the limiting block two 2 is fixed on the pipe body 4 by the connecting member 5 and the fixing member 6, and meanwhile, the spring 7 is arranged to make the connecting member 5 and the fixing member 6 expand with the pipe body 4 when the pipe body 4 expands, so as to prevent the connecting device from being broken due to the increase of the pressure of the pipe body 4 after the pipe body 4 expands.

[0031] In order to improve the stability of the connection, the two fixing members 6 are both fixed with studs 9 at the ends away from the spring 7, long strip holes with the same slope as the two sides of the connecting member 5 are formed on the two sides of the connecting member 5, and the two studs 9 are suspended after passing through the long strip holes at the two ends of the connecting member 5, when the pipe body 4 expands due to heat, the spring 7 drives the fixing members 6 to expand outwardly of the pipe body 4, and the fixing members 6 move in the long strip holes of the connecting member 5. The suspended ends of the two studs 9 are provided with fixing blocks 8, and the connecting member 5, the two fixing members 6 and the spring 7 are sleeved on the pipe body 4 by the connection of the fixing blocks 8, the limiting nuts and the studs 9.

[0032] The above-mentioned embodiments are only the preferred embodiments of the present application, and are not intended to limit the scope of the present application, so that equivalent changes or modifications made according to the structure, features and principles of the present application patent range should be included in the patent range of the present application.

Claims

1. A gasifier superheater superheat line stop device characterized by, Including limit block one (1) and limit block two (2), limit block one (1) and limit block two (2) are fixed on two adjacent pipe bodies (4) in superheated pipeline respectively; One end of the limit block one (1) is connected with the outer surface of one pipe body (4), and the other end is suspended, and the end of the suspended end of the limit block one (1) is fixed with a rectangular protrusion; One end of the limit block two (2) is connected with the outer surface of the other pipe body (4), and the other end is suspended, and the end of the limit block two (2) is provided with a groove matched with the rectangular protrusion of the limit block one (1). The rectangular protrusion of the limit block one (1) and the groove of the limit block two (2) are matched.

2. A gasifier superheater superheat line limiter device according to claim 1, characterized in that, The limit block one (1) and the limit block two (2) are both made of incoloy825 material.

3. A gasifier superheater superheat line limiter device according to claim 1, characterized in that, The gap between the matching surfaces of the limit block one (1) and the limit block two (2) is less than or equal to 0.2mm.

4. The gasifier superheater superheat line limiter device of claim 1, wherein, The length of the limit block one (1) and the limit block two (2) is greater than or equal to 100mm.

5. A gasifier superheater superheat line limiter device according to claim 1, wherein, The two pipe bodies (4) are straight pipe sections in the superheated pipeline.

6. A gasifier superheater superheat line limiter device according to claim 1, wherein, The connecting parts between the limit block one (1), the limit block two (2) and the pipe body (4) are fixed by welding.

7. A gasifier superheater superheat line limiter device according to claim 6, characterized in that, The connecting parts between the limit block one (1), the limit block two (2) and the pipe body (4) are provided with bevels (3) on both sides.

8. A gasifier superheater superheat line limiter device according to claim 1, wherein, The limit block one (1) and the limit block two (2) are connected with the outer surface of the pipe body (4) through connecting devices.

9. A gasifier superheater superheat line limiter device according to claim 8, characterized in that, The connecting device includes a fixing piece (6), a spring (7) and a connecting piece (5), the fixing piece (6) is two, the two fixing pieces (6) are connected through the spring (7); the two fixing pieces (6) and the spring (7) are arranged on the outer wall of the pipe body (4) after being surrounded by U-shaped; the connecting piece (5) is "π" shaped structure, the plane of the connecting piece (5) is fixedly connected with the limit block one (1) or the limit block two (2); the two ends of the connecting piece (5) are connected with the two fixing pieces (6) respectively, so that the connecting piece (5), the two fixing pieces (6) are sleeved and fixed on the pipe body (4).

10. A gasifier superheater superheat line limiter device according to claim 9, wherein, The end of the two fixing pieces (6) away from the spring (7) is fixed with a stud (9), the stud (9) is suspended after passing through the connecting piece (5), and the suspended end of the two studs (9) is provided with a fixing block (8) and a limiting nut.

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