CN219367607U

CN219367607U - Air distribution device of fluidized bed boiler

Info

Publication number: CN219367607U
Application number: CN202223516789.5U
Authority: CN
Inventors: 周新明; 温超; 张伟林; 许杰
Original assignee: Inner Mongolia North Mengxi Power Generation Co ltd
Current assignee: Inner Mongolia North Mengxi Power Generation Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-07-18
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses an air distribution device of a fluidized bed boiler, which comprises an air distribution plate, wherein a central pipeline is arranged on the air distribution plate, a hood is arranged on the central pipeline, a plurality of air openings are formed in the hood, the air distribution plate is provided with a locking structure, the locking structure is provided with a linkage structure, the linkage structure is arranged on the hood, a rotating structure is arranged on the hood, and the rotating structure is arranged on the air openings; the linkage structure comprises a toothed plate, gears are meshed on the toothed plate, a V-shaped rod is arranged on the gears, the scheme is characterized in that the wind cap is only required to be pressed downwards through the arrangement of the structures such as the connecting rod, the curve groove and the movable shaft, the wind cap moves downwards to drive the connecting rod to move to one side, the wind cap and the central pipeline can be rapidly separated for maintenance, a large amount of manpower and material resources are avoided, after the maintenance is finished, the wind cap is pressed downwards again, so that the wind cap can be rapidly fixed, and the normal working time is avoided.

Description

Air distribution device of fluidized bed boiler

Technical Field

The utility model relates to the technical field of fluidized bed boilers, in particular to an air distribution device of a fluidized bed boiler.

Background

The circulating fluidized bed boiler adopts clean coal combustion technology with highest industrialization degree, the circulating fluidized bed boiler adopts fluidized combustion, the main structure comprises a combustion chamber and a circulating furnace, the biggest difference with the bubbling fluidized bed combustion technology is that the operation wind speed is high, heterogeneous reaction processes such as combustion and desulfurization are enhanced, the boiler capacity can be expanded to large capacity acceptable in the electric power industry, the basic problems such as thermal, mechanical, material science and the like and engineering problems such as expansion, abrasion and overtemperature are well solved by the circulating fluidized bed boiler, and the circulating fluidized bed boiler is an advanced technology for utilizing the energy of the flame-retardant solid fuel.

In the prior art, the publication number is CN212178853U, which relates to the boiler field. This circulating fluidized bed boiler includes air distribution plate, tuber pipe and hood, air distribution plate and tuber pipe fixed connection, the hood is established in tuber pipe one side, the wind hole has been seted up on the hood, the inside wind-guiding structure that is equipped with of tuber pipe, be equipped with connection structure between tuber pipe and the hood, the wind-guiding structure includes the bull stick, the outside cover of bull stick is equipped with solid fixed ring, carry out swing joint through the bearing between bull stick and the solid fixed ring, gu fixed ring outside is equipped with the dead lever, dead lever and tuber pipe inner wall fixed connection, bull stick top fixedly connected with pivot, the pivot outside is equipped with the blade, fixed connection between blade and the pivot, but this kind of fluidized bed boiler's air distribution device has following some problems to take place frequently:

1. in the long-term operation process, due to high working environment temperature and high wind speed, serious abrasion and carbonization easily occur at the joint of the wind cap and the central pipeline, vortex and other phenomena occur in wind in the wind cap due to carbon deposition in the wind cap, when the central pipeline and the wind cap are maintained in practice, the current wind cap is not removed and replaced due to long-time thermal deformation due to the fact that the wind cap which is connected by threads is mostly used, so that when the wind cap is replaced, refractory castable on the wind distribution plate is required to be removed firstly, then the welded central pipe on the wind distribution plate is cut, a new central pipe is welded, and the castable is reinstalled after the maintenance is finished, thereby being very time-consuming and labor-consuming;

2. during actual use, the tuyere on the hood is small in production, so that a plurality of carbon scraps can be accumulated at the tuyere on the hood in the long-time use process of the fluidized bed boiler, the wind quantity of the tuyere is reduced, the tuyere is more seriously blocked by carbon deposition, the fluidized bed boiler cannot be normally used, and the boiler is exploded, so that the personal health of staff is threatened.

Disclosure of Invention

The utility model aims to provide an air distribution device of a fluidized bed boiler, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the wind distribution device of the fluidized bed boiler comprises a wind distribution plate, wherein a central pipeline is arranged on the wind distribution plate, a wind cap is arranged on the central pipeline, a plurality of wind inlets are formed in the wind cap, a locking structure is arranged on the wind distribution plate, a linkage structure is arranged on the locking structure, the linkage structure is arranged on the wind cap, a rotating structure is arranged on the wind cap, and the rotating structure is arranged on the wind inlets;

the linkage structure comprises a toothed plate, a gear is meshed with the toothed plate, a V-shaped rod is arranged on the gear, a limiting block is arranged on the V-shaped rod, a U-shaped clamping plate is arranged on the limiting block, and a positioning plate is arranged on the hood and is in contact with the U-shaped clamping plate.

Preferably, the rotating structure comprises a snap ring, the snap ring is sleeved on the hood, a supporting plate is arranged on the snap ring, a movable shaft is sleeved on the supporting plate, a supporting rod is arranged at one end of the movable shaft at annular equal intervals, a cleaning cloth is arranged on the supporting rod and is contacted with the air port, an L-shaped rod is arranged at the other end of the movable shaft, a movable plate is arranged on the L-shaped rod, a fixed shaft is sleeved on the movable plate, a circular turntable is arranged on the fixed shaft, a rotating shaft is arranged on the circular turntable, the rotating shaft is rotatably arranged on the snap ring, and a plurality of fan blades are arranged at annular equal intervals on the rotating shaft.

Preferably, the locking structure comprises a partition plate, the partition plate is arranged on the air distribution plate, a transmission shaft is arranged on the partition plate, a connecting rod is rotatably arranged on the transmission shaft, a mounting plate is movably arranged on the connecting rod, a driving rod is arranged on the mounting plate, and the driving rod is in contact with the toothed plate.

Preferably, the mounting plate is provided with a curved slot, the connecting rod is provided with a movable shaft, and the movable shaft is slidably arranged in the curved slot.

Preferably, sliding blocks are arranged on two sides of the mounting plate, two sliding grooves are formed in the inner side of the partition plate, and the sliding blocks are movably arranged in the two sliding grooves respectively.

Preferably, the baffle is provided with a limiting hole, and the driving rod is movably arranged in the limiting hole.

Preferably, a reset spring is movably arranged on the inner wall of the partition plate, and the other end of the reset spring is arranged on the mounting plate.

Preferably, the baffle is provided with a retention plate, the retention plate is provided with a rotating shaft, and the rotating shaft is sleeved on the gear.

Compared with the prior art, the utility model has the beneficial effects that: this scheme is through the setting of mounting panel, the connecting rod, the curved slot, the loose axle, the pinion rack, the gear, structure such as U type cardboard, when maintaining maintenance to hood and central pipeline, only need press down the hood, the hood moves down and drives the locating plate and remove, the locating plate removes and drives the pinion rack and remove, the pinion rack removes and drives spacing hole and remove, spacing hole removes and drives the mounting panel and remove, the mounting panel removes and drive the connecting rod and remove to one side, thereby separation hood and central pipeline that can be quick maintain, after maintenance is finished, only need press down the hood, the hood removes and drives the pinion rack and remove, thereby can be quick fix the hood, thereby separation waste a large amount of manpower and materials to hood and central pipeline when having avoided maintaining, can also quick fix the hood after maintenance is finished, avoid wasting normal operating time.

This scheme is through the setting of flabellum, circular carousel, remove axle, cleaning cloth isotructure, in order to clear up the long-term carbon deposition of wind gap department always, utilize the wind of wind gap to drive the flabellum rotation, the flabellum rotates and drives circular carousel rotation, circular carousel rotation drives the fly leaf and is reciprocating motion, the fly leaf is reciprocating motion and drives cleaning cloth and always move inside and outside in the wind gap, thereby the carbon bits that the clearance wind gap that can be quick accumulate avoid carbon bits to accumulate at the wind gap for a long time and pile up, the amount of wind that leads to the wind gap reduces, more serious have carbon deposition to block up the wind gap completely, lead to the fluidized bed boiler can not normal use, cause the boiler explosion, thereby threat staff's personal health.

Drawings

FIG. 1 is a schematic view of a structure of an air distribution device of a fluidized bed boiler according to the present utility model;

FIG. 2 is an enlarged view of a portion of the air distribution device of the fluidized bed boiler of the present utility model at FIG. 1A;

FIG. 3 is a schematic view showing the connection structure of a snap ring, a movable shaft and a cleaning cloth of an air distribution device of a fluidized bed boiler;

FIG. 4 is a schematic view showing the connection structure of the air distribution plate, the partition plate and the central pipe of the air distribution device of the fluidized bed boiler;

FIG. 5 is a schematic cross-sectional view of a partition, a toothed plate and a central duct of an air distribution device of a fluidized bed boiler according to the present utility model;

fig. 6 is a schematic diagram showing the connection structure of a toothed plate, a gear and a retention plate of an air distribution device of a fluidized bed boiler according to the present utility model.

In the figure, 1, an air distribution plate, 2, a hood, 3, a central pipeline, 4, an air inlet, 5, a clamping ring, 51, a rotating shaft, 52, a fan blade, 53, a circular turntable, 54, a movable plate, 55, an L-shaped rod, 56, a supporting plate, 57, a moving shaft, 58, a supporting rod, 59, cleaning cloth, 510, a fixed shaft, 6, a baffle plate, 61, a connecting rod, 62, a transmission shaft, 63, a curved slot, 64, a movable shaft, 65, a driving rod, 66, a limiting hole, 67, a sliding chute, 68, a sliding block, 69, a return spring, 610, a mounting plate, 7, a toothed plate, 71, a retention plate, 72, a gear, 73, a rotating shaft, 74, a V-shaped rod, 75, a limiting block, 76, a U-shaped clamping plate, 77 and a locating plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the present utility model provides a technical solution: the utility model provides a fluidized bed boiler's wind distribution device, includes air distribution plate 1, installs central pipeline 3 on the air distribution plate 1, installs hood 2 on the central pipeline 3, has seted up a plurality of wind gap 4 on the hood 2, including installing locking structure on the air distribution plate 1, install interlock structure on the locking structure, install rotating structure on the hood 2, rotating structure installs on wind gap 4; through set up curved slot 63 and loose axle 64 on locking structure, be convenient for quick separation installation hood 2 to can maintain hood 2 and central pipeline 3, through set up U type cardboard 76 on the interlock structure, be convenient for quick fixed after separating hood 2, through set up cleaning cloth 59, fly leaf 54 and circular carousel 53 on rotating the structure, be convenient for clear up wind gap 4 not stopping.

The interlock structure includes pinion rack 7, the meshing has gear 72 on the pinion rack 7, install V type pole 74 on the gear 72, install stopper 75 on the V type pole 74, install U type cardboard 76 on the stopper 75, install locating plate 77 on the hood 2, U type cardboard 76 contacts with locating plate 77, it removes to drive gear 72 through the pinion rack 7, gear 72 removes and drives V type pole 74 and remove, V type pole 74 removes and drives stopper 75 and remove and drive U type cardboard 76, thereby the separation of U type cardboard 76 and locating plate 77 is fixed of being convenient for.

Referring to fig. 1 to 3, in the present utility model, the rotating structure includes a snap ring 5, the snap ring 5 is sleeved on a hood 2, a supporting plate 56 is mounted on the snap ring 5, a moving shaft 57 is sleeved on the supporting plate 56, a supporting rod 58 is mounted at one end of the moving shaft 57 at equal intervals in a ring shape, a cleaning cloth 59 is mounted on the supporting rod 58, the cleaning cloth 59 is in contact with a tuyere 4, an L-shaped rod 55 is mounted at the other end of the moving shaft 57, a movable plate 54 is mounted on the L-shaped rod 55, a fixed shaft 510 is sleeved on the movable plate 54, a circular turntable 53 is mounted on the fixed shaft 510, a rotating shaft 51 is mounted on the circular turntable 53, the rotating shaft 51 is rotatably mounted on the snap ring 5, a plurality of blades 52 are mounted on the rotating shaft 51 at equal intervals in a ring shape, the rotating shaft 51 is rotatably driven by wind force on the tuyere 4 to rotate the circular turntable 53, the circular turntable 53 is rotatably driven by the blades 52, the movable plate 54 is reciprocally moved, thereby facilitating the driving of the cleaning cloth 59 to move back and forth constantly in the tuyere 4, and facilitating the cleaning of carbon dust accumulated on the tuyere 4.

Referring to fig. 4 to 5, in the present utility model, the locking structure includes a partition plate 6, the partition plate 6 is installed on the air distribution plate 1, a transmission shaft 62 is installed on the partition plate 6, a connecting rod 61 is rotatably installed on the transmission shaft 62, a mounting plate 610 is movably installed on the connecting rod 61, a driving rod 65 is installed on the mounting plate 610, the driving rod 65 is in contact with the toothed plate 7, the toothed plate 7 moves to drive the driving rod 65 to move, and the driving rod 65 moves to drive the mounting plate 610 to move, thereby facilitating the movement of the transmission shaft 62.

Referring to fig. 1 and 4, in the present utility model, a curved slot 63 is formed on a mounting plate 610, a movable shaft 64 is mounted on a connecting rod 61, the movable shaft 64 is slidably mounted in the curved slot 63, and the movable shaft 64 on the connecting rod 61 slides in the curved slot 63 on the mounting plate 610, so that the hood 2 and the central duct 3 can be quickly separated and fixed.

Referring to fig. 5, in the present utility model, sliding blocks 68 are mounted on both sides of a mounting plate 610, two sliding grooves 67 are formed on the inner side of a partition plate 6, the sliding blocks 68 are movably mounted in the two sliding grooves 67, and the sliding blocks 68 slide in the sliding grooves 67 to prevent the mounting plate 610 from being deviated during movement.

Referring to fig. 4 to 5, in the present utility model, the spacer 6 is provided with a limiting hole 66, the driving rod 65 is movably installed in the limiting hole 66, and the driving rod 65 is limited to move in the vertical direction by moving the driving rod 65 in the limiting hole 66, so that the toothed plate 7 can be guaranteed to be meshed with the gear 72 all the time.

Referring to fig. 1, 4 and 5, in the present utility model, a restoring spring 69 is movably installed on the inner wall of the partition plate 6, the other end of the restoring spring 69 is installed on the installation plate 610, and by installing the restoring spring 69 on the bottom side of the installation plate 610, the hood 2 and the central pipe 3 can be conveniently and rapidly separated by using the strong restoring force of the restoring spring 69.

Referring to fig. 6, in the present utility model, a retainer plate 71 is mounted on a partition plate 6, a rotation shaft 73 is mounted on the retainer plate 71, the rotation shaft 73 is sleeved on a gear 72, and the rotation shaft 73 is sleeved on the gear 72 on the retainer plate 71 through the rotation shaft 73, so that the rotation shaft 73 is conveniently limited to rotate only in situ and is always engaged with a toothed plate 7.

The working principle of the utility model is as follows: when maintenance is needed to be carried out on the hood 2 and the central pipeline 3 on the air distribution plate 1, only the hood 2 is needed to be pressed downwards, the hood 2 is moved to drive the clamping ring 5 to move, the clamping ring 5 is moved to drive the positioning plate 77 to move, the positioning plate 77 is moved to drive the toothed plate 7 to move, the toothed plate 7 is moved to drive the driving rod 65 to move in the limiting hole 66, the driving rod 65 is moved to drive the mounting plate 610 on the sliding block 68 in the sliding chute 67 to move, the mounting plate 610 is moved to drive the reset spring 69 on the baffle 6 to move downwards, meanwhile, the mounting plate 610 is moved to drive the movable shaft 64 to slide on the curved groove 63 on the mounting plate 610, meanwhile, the mounting plate 610 is driven to move upwards under the powerful restoring force of the reset spring 69, the driving rod 65 is driven to move upwards the driving rod 65 to drive the toothed plate 7 to move upwards, the toothed plate 7 moves upwards to drive the gear 72 on the retention plate 71 to rotate anticlockwise, the gear 72 rotates to drive the V-shaped rod 74 to move, the V-shaped rod 74 moves to drive the limiting block 75 to move, thereby the fan cap 2 and the central pipeline 3 can be quickly separated, then maintenance is carried out, after the maintenance is finished, the fan cap 2 is only required to be pressed downwards, the fan cap 2 moves to drive the toothed plate 7 to move, the toothed plate 7 moves to drive the gear 72 to rotate, thereby the fan cap 2 can be quickly fixed, thereby a great deal of manpower and material resources are avoided from being wasted in the separation of the fan cap 2 and the central pipeline 3 during maintenance, the fan cap 2 can be quickly fixed after the maintenance is finished, normal working time is avoided from being wasted, meanwhile, wind power on the wind port 4 drives the fan blades 52 on the rotating shaft 51 to rotate, the fan blades 52 rotate to drive the rotating shaft 51 on the clamping ring 5 to rotate, the rotating shaft 51 rotates to drive the circular turntable 53 to rotate, the round turntable 53 rotates to drive the fixed shaft 510 to rotate, the fixed shaft 510 rotates to drive the movable plate 54 to reciprocate, the movable plate 54 moves to drive the L-shaped rod 55 to move, the L-shaped rod 55 moves to drive the movable shaft 57 on the supporting plate 56 to move, the movable shaft 57 moves to drive the supporting rod 58 to move, and the supporting rod 58 moves to drive the cleaning cloth 59 to do reciprocating motion in the tuyere 4 without stopping, so that carbon scraps accumulated on the tuyere 4 can be cleaned rapidly, carbon scraps are prevented from accumulating and accumulating in the tuyere 4 for a long time, the air quantity of the tuyere 4 is reduced, the tuyere 4 is blocked completely by more serious carbon deposition, the fluidized bed boiler cannot be used normally, and the boiler explosion is caused, thereby threatening the personal health of staff.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fluidized bed boiler's wind distribution device, includes air distribution plate (1), installs central pipeline (3) on air distribution plate (1), installs hood (2) on central pipeline (3), has seted up a plurality of wind gap (4), its characterized in that on hood (2): the wind power generation device comprises a locking structure arranged on a wind distribution plate (1), a linkage structure arranged on the locking structure and arranged on a wind cap (2), a rotating structure arranged on the wind cap (2) and arranged on a wind port (4);

the linkage structure comprises a toothed plate (7), a gear (72) is meshed on the toothed plate (7), a V-shaped rod (74) is arranged on the gear (72), a limiting block (75) is arranged on the V-shaped rod (74), a U-shaped clamping plate (76) is arranged on the limiting block (75), a positioning plate (77) is arranged on the hood (2), and the U-shaped clamping plate (76) is in contact with the positioning plate (77).

2. The air distribution device of the fluidized bed boiler according to claim 1, wherein: the utility model provides a rotating structure includes snap ring (5), and snap ring (5) cup joints on hood (2), install backup pad (56) on snap ring (5), cup jointed removal axle (57) on backup pad (56), the one end annular equidistance of removal axle (57) is installed bracing piece (58), install cleaning cloth (59) on bracing piece (58), cleaning cloth (59) are contacted with wind gap (4), install L type pole (55) on the other end of removal axle (57), install fly leaf (54) on L type pole (55), cup jointed fixed axle (510) on fly leaf (54), install circular carousel (53) on fixed axle (510), install axis of rotation (51) on circular carousel (53), axis of rotation (51) rotate and install on snap ring (5), annular equidistance is installed a plurality of flabellums (52) on axis of rotation (51).

3. The air distribution device of the fluidized bed boiler according to claim 1, wherein: the locking structure comprises a partition plate (6), the partition plate (6) is arranged on the air distribution plate (1), a transmission shaft (62) is arranged on the partition plate (6), a connecting rod (61) is rotatably arranged on the transmission shaft (62), a mounting plate (610) is movably arranged on the connecting rod (61), a driving rod (65) is arranged on the mounting plate (610), and the driving rod (65) is in contact with the toothed plate (7).

4. A fluid bed boiler air distribution device according to claim 3, characterized in that: a curved slot (63) is formed in the mounting plate (610), a movable shaft (64) is mounted on the connecting rod (61), and the movable shaft (64) is slidably mounted in the curved slot (63).

5. A fluid bed boiler air distribution device according to claim 3, characterized in that: sliding blocks (68) are arranged on two sides of the mounting plate (610), two sliding grooves (67) are formed in the inner side of the partition plate (6), and the sliding blocks (68) are movably arranged in the two sliding grooves (67) respectively.

6. A fluid bed boiler air distribution device according to claim 3, characterized in that: limiting holes (66) are formed in the partition plates (6), and the driving rods (65) are movably installed in the limiting holes (66).

7. A fluid bed boiler air distribution device according to claim 3, characterized in that: and a return spring (69) is movably arranged on the inner wall of the partition plate (6), and the other end of the return spring (69) is arranged on the mounting plate (610).

8. A fluid bed boiler air distribution device according to claim 3, characterized in that: and a retaining plate (71) is arranged on the partition plate (6), a rotating shaft (73) is arranged on the retaining plate (71), and the rotating shaft (73) is sleeved on the gear (72).