Dry quenching boiler heat recovery device

Abstract

The utility model relates to the field of dry quenching boilers, and discloses a dry quenching boiler heat recovery device which comprises a heat exchange component and a bending component, the heat exchange component comprises a shell, fluid pipes are connected to the shell in a central symmetry mode, pipe plates are installed at the two ends of the shell, and the pipe plates are connected with a pipe box through a first connecting mechanism; in addition, a plurality of baffle plates and a plurality of heat exchange tubes with the two ends fixed to the tube plates are installed in the shell. Under the action of the driving mechanism, the upper and lower groups of sliding blocks can be driven to simultaneously slide in opposite directions along the sliding grooves, so that the sliding blocks drive the upper and lower groups of baffle plates to respectively get away from each other or get close to each other. As the upper group of baffle plates and the lower group of baffle plates are centrosymmetric, no matter whether the upper group of baffle plates and the lower group of baffle plates are close to each other or far away from each other, the baffle plates are finally gradually stacked towards the two ends in the shell, and in the process, the turbulence degree is gradually reduced. In this way, the turbulence degree can be changed according to actual needs, and therefore the effect of changing the heat transfer area of fluid is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of dry coke quenching boilers, in particular to a heat recovery device for dry coke quenching boilers. Background Art

[0002] A dry coke quenching boiler is a device used to quench coke. The dry coke quenching process is to heat the coke to a certain temperature under oxygen-free conditions so that it extinguishes naturally, rather than using water cooling. This process has several advantages, such as reducing environmental pollution, improving energy efficiency and coke quality.

[0003] The dry quenching boiler extinguishes the coke at high temperatures and can also recover heat for power generation or other processes. The recovered heat is usually recovered using a waste heat boiler. The waste heat boiler uses a heat exchanger to replace the heat of the hot exhaust gas into cold water, turning the cold water into hot water, thereby storing the heat.

[0004] The heat exchanger is equipped with a guide plate to increase the turbulence of the fluid, increase the heat transfer coefficient of the shell-side fluid, and thus increase the heat transfer area. However, the guide plate is mostly fixed inside the shell, and its turbulence level is equivalent to a fixed level and cannot be changed, which means that the heat transfer area of ​​the fluid cannot be changed, and the applicability is low. Utility Model Content

[0005] Technical problem to be solved: How to change the baffle to change the heat transfer area of ​​the fluid.

[0006] Technical solution: The utility model provides a heat recovery device for a dry quenching boiler, comprising a heat exchange component and a folding component: the heat exchange component comprises a shell, on which fluid pipes are connected in a centrally symmetrical manner, and tube sheets are installed at both ends of the shell, the tube sheets are connected to a tube box through a connecting mechanism, and the outer side of the tube box is connected to a gas pipe; in addition, a plurality of baffles and a plurality of heat exchange tubes whose two ends are fixed to the tube sheets are installed inside the shell, and the heat exchange tubes moveably pass through the baffles; the folding component comprises slide grooves symmetrically opened at the top and bottom ends of the shell and distributed along the length direction thereof, and a slider fixed to the top or bottom end of the baffle is slidably connected in the slide groove; in addition, a driving mechanism for driving the upper and lower groups of sliders to slide in opposite directions along the slide groove at the same time is provided inside the shell.

[0007] Furthermore, the driving mechanism includes two filament rods which are respectively threaded through the upper and lower sets of sliders and located in the slide grooves. One end of the filament rod is connected to the corresponding tube sheet through a bearing, and the other end is provided with a rotating mechanism for driving the rotation thereof.

[0008] Furthermore, the rotating mechanism includes a motor installed on another tube plate, and the output shaft of the motor is connected to the other end of the filament rod.

[0009] Furthermore, the connection mechanism 1 includes a ring plate connected to the inner side of the tube box and having the same outer diameter as the tube plate, both of which are provided with through holes, and are connected with a combination bolt 1 through the through holes.

[0010] Furthermore, a cover plate is divided at the top of the shell, and a connecting mechanism is arranged between the cover plate and the shell to connect them inside the chassis. The cover plate is semi-annular, and both ends thereof are close to the ends of the shell.

[0011] Furthermore, the second connection mechanism includes ear plates connected to the cover plate and the shell at the front and rear positions, each ear plate is penetrated with a connection hole, and each corresponding group of ear plates above and below are connected by a combination bolt two through the connection hole.

[0012] Furthermore, the bottom end and both left and right ends of the cover plate are connected with water stop strips covering the edge positions. The water stop strips are elastic structures and can be elastically inserted between the connection between the cover plate and the shell.

[0013] Technical effect: In the utility model, under the action of the driving mechanism, the upper and lower sets of sliders can be driven to slide in opposite directions along the slide groove at the same time, so that the sliders drive the upper and lower sets of baffles to move away from or closer to each other. Because the upper and lower sets of baffles are centrally symmetrical, no matter whether the upper and lower sets of baffles are closer to or farther away from each other, they will eventually accumulate gradually at both ends of the shell, and in this process, the turbulence level will gradually decrease. In this way, the turbulence level can be changed according to actual needs, thereby achieving the effect of changing the heat transfer area of ​​the fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the slideway and slider of the utility model;

[0018] Figure 4 This is a structural schematic diagram of the second connecting mechanism of the utility model;

[0019] In the figure: 1. Shell; 2. Fluid pipe; 3. Tube plate; 4. Connection mechanism 1; 401. Ring plate; 402. Combination bolt 1; 5. Tube box; 6. Gas pipe; 7. Baffle; 8. Heat exchange tube; 9. Slide; 10. Slider; 11. Driving mechanism; 1101. Screw rod; 12. Cover plate; 13. Connection mechanism 2; 1301. Ear plate; 1302. Connection hole; 1303. Combination bolt 2. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0021] The heat recovery device for a coke dry quenching boiler provided in this specific embodiment is as follows: Figure 1 and Figure 2 As shown, it includes a heat exchange component and a folding component, wherein:

[0022] The heat exchange component includes a shell 1, on which fluid pipes 2 are connected in a centrally symmetrical manner, one of which is a fluid inlet and the other is an outlet, and tube sheets 3 are installed at both ends, and the tube sheets 3 are connected to the tube box 5 through a connecting mechanism 14. The connecting mechanism 14 includes a ring plate 401 connected to the inner side of the tube box 5 and having the same outer diameter as the tube sheet 3, both of which are provided with through holes, and are connected by a combination bolt 1 402 through the through holes. In addition, the outer side of the tube box 5 is connected to a gas pipe 6, one of which is an air inlet and the other is an air outlet; in addition, a plurality of baffles 7 and a plurality of heat exchange tubes 8 fixed to the tube sheets 3 at both ends are installed inside the shell 1, and the heat exchange tubes 8 are movable through the baffles 7. That is, the heat exchange tubes 8 are fixed by the two tube sheets 3 and have nothing to do with the baffles 7.

[0023] The folding member includes slide grooves 9 symmetrically arranged at the top and bottom of the housing 1 and distributed along the length direction thereof, wherein a slider 10 fixed to the top or bottom of the baffle 7 is slidably engaged in the slide groove 9; in addition, a driving mechanism 11 is also provided inside the housing 1 for driving the upper and lower sliders 10 to slide in opposite directions simultaneously along the slide groove 9. Figure 3As shown, the driving mechanism 11 includes two filament rods 1101 respectively threadedly penetrated with the upper and lower groups of sliders 10 and located in the slide groove 9. One end of the filament rod 1101 is connected to the corresponding tube sheet 3 through a bearing, and the other end is provided with a rotating mechanism for driving it to rotate. The rotating mechanism includes a motor installed on another tube sheet 3, and the output shaft of the motor is connected to the other end of the filament rod 1101. In this way, under the drive of the motor, after the filament rod 1101 rotates, since the slider 10 of the slide groove 9 is engaged and slidably connected, the slider 10 does not rotate, but drives the upper and lower groups of baffles 7 to move away from or approach each other. Because the upper and lower groups of baffles 7 are themselves centrally symmetrical, no matter whether the upper and lower groups of baffles 7 are close to or away from each other, they will eventually gradually accumulate at both ends inside the shell 1, and in this process, the degree of turbulence will gradually decrease. In this way, the degree of turbulence can be changed according to actual needs.

[0024] In addition, if Figure 1 and Figure 4 As shown, in order to facilitate cleaning of the interior of the shell 1, the top of the shell 1 is divided by a cover plate 12, and a connecting mechanism 2 13 is set between the cover plate 12 and the shell 1 for connection inside the chassis. The cover plate 12 is semi-circular, and both ends are close to the ends of the shell 1. The connecting mechanism 2 13 includes ear plates 1301 connected to the front and rear positions of the cover plate 12 and the shell 1. Each ear plate 1301 is penetrated with a connecting hole 1302, and each group of ear plates 1301 corresponding to the upper and lower parts are connected by a combination bolt 2 1303 through the connecting hole 1302. In addition, in order to ensure the sealing effect, the bottom end and the left and right ends of the cover plate 12 are connected with a water stop strip covering the edge position. The water stop strip is an elastic structure and can be elastically inserted between the connection between the cover plate 12 and the shell 1.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat recovery device for a dry coke quenching boiler, comprising a heat exchange component and a folding component: The heat exchange component comprises a shell (1), a fluid tube (2) is centrally symmetrically connected to the shell (1), and tube sheets (3) are installed at both ends of the shell (1), the tube sheet (3) is connected to a tube box (5) through a connecting mechanism (4), and the outer side of the tube box (5) is connected to a gas tube (6); in addition, a plurality of baffles (7) and a plurality of heat exchange tubes (8) whose two ends are fixed to the tube sheet (3) are installed inside the shell (1), characterized in that: The heat exchange tube (8) movably passes through the baffle plate (7); The folding component comprises slide grooves (9) symmetrically arranged at the top and bottom ends of the shell (1) and distributed along the length direction thereof, wherein a slider (10) fixed to the top or bottom end of the baffle (7) is slidably engaged in the slide groove (9); in addition, a driving mechanism (11) is also provided inside the shell (1) for driving the upper and lower groups of sliders (10) to slide simultaneously in opposite directions along the slide groove (9).

2. The heat recovery device for dry coke quenching boiler according to claim 1, characterized in that: The driving mechanism (11) comprises two thin filament rods (1101) which are respectively threadedly penetrated by the upper and lower sets of sliders (10) and are located in the slide groove (9). One end of the thin filament rod (1101) is connected to the corresponding tube plate (3) through a bearing, and the other end is provided with a rotating mechanism for driving the rotation thereof.

3. The heat recovery device for dry coke quenching boiler according to claim 2, characterized in that: The rotating mechanism comprises a motor mounted on another tube sheet (3), the output shaft of the motor being connected to the other end of the filament rod (1101).

4. The heat recovery device for dry coke quenching boiler according to claim 1, characterized in that: The connection mechanism 1 (4) comprises a ring plate (401) connected to the inner side of the tube box (5) and having the same outer diameter as the tube plate (3). Through holes are provided on both of them, and combined bolts 1 (402) are connected through the through holes.

5. The heat recovery device for dry coke quenching boiler according to claim 1, characterized in that: The top of the shell (1) is divided into a cover plate (12), and a second connecting mechanism (13) is provided between the cover plate (12) and the shell (1) for internal connection. The cover plate (12) is semi-annular, and both ends thereof are close to the ends of the shell (1).

6. The heat recovery device for dry coke quenching boiler according to claim 5, characterized in that: The second connecting mechanism (13) comprises ear plates (1301) connected at the front and rear positions of the cover plate (12) and the housing (1), each ear plate (1301) is provided with a connecting hole (1302) extending therethrough, and each group of upper and lower corresponding ear plates (1301) are connected by means of the connecting holes (1302) with second combined bolts (1303).

7. The heat recovery device for dry coke quenching boiler according to claim 6, characterized in that: The bottom end and both left and right ends of the cover plate (12) are connected with water stop strips covering the edge positions. The water stop strips are elastic structures and can be elastically inserted between the connection points of the cover plate (12) and the housing (1).

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