Structure for slagging of ignition air duct

Abstract

The utility model provides a structure for slag tapping of an ignition air duct, and relates to the technical field of fluidized bed boilers, a bed material collecting mechanism and an air chamber baffle plate are arranged in an internal channel of an air chamber wall body, the bed material collecting mechanism is positioned below the air chamber baffle plate, and the bed material collecting mechanism comprises a bed material collecting seat and a bed material moving assembly; one end of the bed material collecting base is correspondingly connected with a transverse pipeline of a brake releasing mechanism penetrating through the inner wall of the air chamber wall, and the bed material moving assembly is transversely and slidably connected to the bed material collecting base and the transverse pipeline. Through the arrangement of the air chamber blocking piece, the bed material collecting base and the bed material moving assembly, bed materials entering the air chamber are isolated by the air chamber blocking piece and fall on the bed material collecting base, the moving block of the bed material moving assembly can drag the bed materials in the arc-shaped groove to the transverse pipeline as much as possible, and then the bed materials are discharged from the discharging channel which is opened in the inclined direction; therefore, the bed material in the air channel is cleaned, the air inlet channel is prevented from being blocked by the bed material, and safe operation of boiler fluidization is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluidized bed boiler technical field, concretely is a structure for igniting slagging of air flue. BACKGROUND

[0002] Circulating fluidized bed boiler is a kind of boiler type based on fluidized bed technology, is widely used in industrial and energy field, and its basic principle is to form fluidized bed in boiler, so that solid particles are suspended under the action of airflow, flow like liquid, this design can realize higher combustion efficiency at lower temperature, and can handle multiple types of fuel, including coal, petroleum, natural gas and biomass etc.

[0003] The air cap in the air flue is the air distribution device of the boiler, and the existing air cap in the air flue will be abraded to cause wear and tear, falling off, and after the air cap is broken and falls off, a large amount of bed material will enter the inside of the air chamber, block the air inlet channel, cause a series of problems such as poor fluidization of the boiler and coking, and in severe cases, the unit will be forced to shut down. UTILITY MODEL CONTENT

[0004] The utility model discloses a structure for igniting slagging of air flue to solve the above-mentioned problems in the prior art that the air cap in the air flue is abraded to cause wear and tear, falling off, and after the air cap is broken and falls off, a large amount of bed material will enter the inside of the air chamber, block the air inlet channel, cause a series of problems such as poor fluidization of the boiler and coking, and in severe cases, the unit will be forced to shut down.

[0005] To achieve the above object, the utility model provides the following technical scheme: a structure for igniting slagging of air flue, including air chamber wall body, bed material collecting mechanism and air chamber baffle, the bed material collecting mechanism and air chamber baffle are installed in the inside passage of air chamber wall body, the bed material collecting mechanism is located below the air chamber baffle, the bed material collecting mechanism includes bed material collecting seat and bed material moving assembly, one end of the bed material collecting seat corresponds to connect the transverse pipe way of the gate releasing mechanism that penetrates in the inner wall of air chamber wall body, the bed material moving assembly is transversely slidably connected in the bed material collecting seat and transverse pipe way.

[0006] Preferably, the upper surface of the bed material collecting seat is provided with a downward arc-shaped groove, the bed material moving assembly includes a moving block, the size of the arc-shaped groove is the same as the inner diameter size of the transverse pipe way of the gate releasing mechanism, and both are matched with the outer diameter of the moving block.

[0007] Preferably, the arc-shaped groove of the bed material collecting seat is provided with an upper inclined surface above the end away from the air inlet of the air chamber, the other side of the upper inclined surface is provided with a positioning seat, and the air chamber baffle is installed on the positioning seat.

[0008] Preferably, the wind chamber baffle has an inclined surface with the same angle as the upper inclined surface, and the surface of the wind chamber baffle is provided with a ventilation hole.

[0009] Preferably, the arc-shaped groove of the bed material collecting seat is provided with an upper partition piece at one end near the air inlet of the wind chamber, and the other end of the upper partition piece is connected to the falling residue blocking piece.

[0010] Preferably, the bed material collecting seat is provided with an end piece at one end away from the horizontal pipeline, the end piece is provided with a groove matching the outer diameter of the moving block in the sliding direction of the moving block, and the moving block is provided with a support at a position corresponding to the falling residue blocking piece in the direction close to the horizontal pipeline; when the falling residue blocking piece rotates to the maximum position, the falling residue blocking piece matches the inner diameter formed by the upper partition piece and the arc-shaped groove with the outer diameter of the moving block.

[0011] Preferably, the releasing mechanism comprises a discharging channel and a residue discharging pipeline end piece, the discharging channel is obliquely arranged below the horizontal pipeline, the bed material moving assembly further comprises a moving rod, one end of the moving rod is fixed to one side of the moving block close to the horizontal pipeline, and the other end of the moving rod is fixed to the residue discharging pipeline end piece, and the residue discharging pipeline end piece is transversely and slidingly connected to the horizontal pipeline.

[0012] Preferably, the residue discharging pipeline end piece comprises a connecting seat and a positioning ring, the other end of the moving rod is fixed to the connecting seat, the positioning ring is movably sleeved on the port of the connecting seat, and the positioning ring is screw-connected to the port of the horizontal pipeline.

[0013] Preferably, the residue discharging pipeline end piece further comprises a movable rod, the port of the horizontal pipeline is provided with a hole, one end of the movable rod is fixedly connected to the connecting seat, and the other end of the movable rod is insertedly connected to the hole in the port of the horizontal pipeline.

[0014] Compared with the prior art, the bed material collecting seat and the bed material moving assembly are arranged, the bed material in the wind chamber is isolated by the wind chamber baffle and falls in the bed material collecting seat, the moving block of the bed material moving assembly can drag all the bed material in the arc-shaped groove to the horizontal pipeline, and then the bed material is discharged from the obliquely opened discharging channel, so that the bed material in the air duct is cleaned, even if the bed material enters the interior of the wind chamber due to the falling of the air cap, the bed material can also avoid blocking the air inlet channel, and the safe operation of the fluidized bed boiler is ensured.

[0015] 1. The bed material collecting seat and the bed material moving assembly are arranged, the bed material in the wind chamber is isolated by the wind chamber baffle and falls in the bed material collecting seat, the moving block of the bed material moving assembly can drag all the bed material in the arc-shaped groove to the horizontal pipeline, and then the bed material is discharged from the obliquely opened discharging channel, so that the bed material in the air duct is cleaned, even if the bed material enters the interior of the wind chamber due to the falling of the air cap, the bed material can also avoid blocking the air inlet channel, and the safe operation of the fluidized bed boiler is ensured.

[0016] 2. The utility model discloses a support and the setting of the falling slag baffle, the support on the moving block contacts the falling slag baffle first, in the process of moving, the contact position of falling slag baffle is with the slope transition of support, can rotate the falling slag baffle to the upper slope, and the movable end of falling slag baffle is abutted at the positioning groove between the upper slope and the arc groove as the maximum opening angle of falling slag baffle, the isolation of falling slag baffle in this state, temporarily prevent the bed material from falling in the arc groove during the operation of cleaning slag, guarantee that the bed material does not fall in the arc groove under the condition of cleaning slag the side of moving block far from the horizontal pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the wind chamber wall body inside and outside structure schematic diagram of the utility model.

[0018] Figure 2 It is the wind chamber baffle and bed material collection mechanism position schematic diagram of the utility model.

[0019] Figure 3 It is the wind chamber baffle installation structure schematic diagram of the utility model.

[0020] Figure 4 It is the upper isolation piece and falling slag baffle structure schematic diagram of the utility model.

[0021] Figure 5 It is the falling slag baffle and moving block position schematic diagram of the utility model.

[0022] Figure 6 It is the release mechanism connection structure schematic diagram of the utility model.

[0023] Figure 7 It is the release pipeline end piece structure schematic diagram of the utility model.

[0024] Figure 8 It is the arc groove and moving block distribution schematic diagram of the utility model.

[0025] Figure 9 It is the end position distribution schematic diagram of the utility model.

[0026] In the drawing: 1, wind chamber wall body, 2, bed material collection mechanism, 21, bed material collection seat, 211, arc groove, 212, upper slope, 213, positioning seat, 214, positioning groove, 22, end, 221, recess, 23, upper isolation piece, 231, falling slag baffle, 24, bed material moving assembly, 241, moving block, 242, moving rod, 243, support, 3, wind chamber baffle, 4, release mechanism, 41, horizontal pipeline, 42, blanking channel, 43, release pipeline end piece, 431, connecting seat, 432, positioning ring, 433, movable rod. DETAILED DESCRIPTION

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] One embodiment provided by this utility model: as follows Figure 1 As shown, a structure for ash discharge in an ignition duct includes a wind chamber wall 1, a bed material collection mechanism 2, a wind chamber baffle 3, and a discharge gate mechanism 4.

[0029] like Figure 1 As shown, the bed material collection mechanism 2 and the air chamber baffle 3 are installed at the manhole of the water-cooled air chamber in the internal channel of the air chamber wall 1. The bed material collection mechanism 2 includes a bed material collection seat 21, an end 22, an upper isolation component 23, and a bed material moving assembly 24. The end 22 and the bed material collection seat 21 are embedded inside the air chamber wall 1 to reduce the space occupied in the air chamber channel. The air chamber baffle 3 occupies a large area in the channel cross-section, reducing obstruction to the bed material and ensuring that most of the fallen bed material reaches the position of the air chamber baffle 3.

[0030] like Figure 2 and Figure 3 As shown, the bed material collection mechanism 2 is located below the air chamber baffle 3. The upper surface of the bed material collection seat 21 has a downward-facing arc-shaped groove 211. An upper inclined surface 212 is provided above the end of the arc-shaped groove 211 away from the air inlet of the air chamber. A positioning seat 213 is provided on the other side of the upper inclined surface 212, and the air chamber baffle 3 is mounted on the positioning seat 213. The air chamber baffle 3 has an inclined surface with the same angle as the upper inclined surface 212, and ventilation holes are provided on its surface. Air entering the air chamber channel passes through the air chamber baffle 3 and is normally delivered through the ventilation holes. The bed material is isolated by the air chamber baffle 3 and slides down the inclined air chamber baffle 3 and the upper inclined surface 212 into the arc-shaped groove 211. The inclined air chamber baffle 3 and the upper inclined surface 212 can slow down the speed of the bed material falling and improve the accuracy of the bed material falling into the arc-shaped groove 211.

[0031] like Figure 4 and Figure 5 As shown, an upper isolator 23 is installed above the arc-shaped groove 211 of the bed material collection seat 21, near the air inlet of the air chamber. The other end of the upper isolator 23 is connected to the slag baffle 231. During normal operation, the movable end of the slag baffle 231 hangs freely, forming a channel between the upper isolator 23 and the upper inclined surface 212. The bed material enters the arc-shaped groove 211 through this channel along the inclined surface. The upper isolator 23 forms a barrier to prevent the bed material from falling out during the sliding process.

[0032] As Figure 6 , Figure 7 , Figure 8 and Figure 9 shown, the release mechanism 4 includes a transverse pipe 41, a discharging channel 42 and a slag discharge pipe end piece 43, one end of the bed material collecting seat 21 is connected to the transverse pipe 41 of the release mechanism 4 penetrating through the inner wall of the wind chamber wall 1. The discharging channel 42 is installed obliquely below the transverse pipe 41. The bed material moving assembly 24 includes a moving block 241 and a moving rod 242, the moving block 241 is transversely and slidingly connected to the arc-shaped groove 211 of the bed material collecting seat 21 and the inside of the transverse pipe 41, the inner diameter of the transverse pipe 41 of the release mechanism 4 is the same size as the size of the arc-shaped groove 211, and both are matched with the outer diameter of the moving block 241. The end head 22 is arranged at the end of the bed material collecting seat 21 away from the transverse pipe 41, and the end head 22 is provided with a cylindrical groove 221 matched with the outer diameter of the moving block 241 in the sliding direction of the moving block 241. One end of the moving rod 242 is fixed to the side of the moving block 241 close to the transverse pipe 41, and the other end is fixed to the slag discharge pipe end piece 43. The slag discharge pipe end piece 43 is installed at the end of the transverse pipe 41 away from the outer wall of the wind chamber wall 1, and the slag discharge pipe end piece 43 is transversely and slidingly connected to the transverse pipe 41. The slag discharge pipe end piece 43 includes a connecting seat 431 and a positioning ring 432, the other end of the moving rod 242 is fixed to the connecting seat 431, the positioning ring 432 is movably sleeved on the port of the connecting seat 431, and the positioning ring 432 is screw-connected to the port of the transverse pipe 41. The slag discharge pipe end piece 43 further includes a movable rod 433, the port of the transverse pipe 41 is provided with a hole, one end of the movable rod 433 is fixedly connected to the connecting seat 431, and the other end is insertedly connected to the hole in the port of the transverse pipe 41.

[0033] The support 243 is arranged at a position corresponding to the slag falling stopper 231 in the direction close to the horizontal pipeline 41. In the normal operation air supply non-cleaning state, the moving block 241 and the support 243 are both located at the groove 221 position of the end head 22, the moving block 241 and the support 243 do not interfere with the slag falling stopper 231, the slag falling stopper 231 freely falls, and the air supply state in the air chamber passage is ensured to isolate the bed material collected into the arc-shaped groove 211. A period of time is needed to clean the bed material collected in the arc-shaped groove 211, so in the cleaning state, the staff loosens the positioning ring 432 of the slag falling pipeline end piece 43 connected at the port position of the horizontal pipeline 41, the connecting seat 431 can be separated from the horizontal pipeline 41, and at the same time, due to the position limitation of the movable rod 433, the connecting seat 431 can only move horizontally outward. At this time, the connecting seat 431 drives the moving rod 242 inside the horizontal pipeline 41 to displace, so that the moving block 241 moves from the original position of the groove 221 of the end head 22 to the direction of the horizontal pipeline 41. The support 243 on the moving block 241 first contacts the slag falling stopper 231, and in the moving process, the contact position of the slag falling stopper 231 transitions with the slope of the support 243, so that the slag falling stopper 231 is turned upward along the slope 212. Finally, the movable end of the slag falling stopper 231 abuts at the positioning groove 214 between the upper slope 212 and the arc-shaped groove 211 to be the maximum opening angle of the slag falling stopper 231. In this state, the slag falling stopper 231 is isolated, temporarily prevents the bed material from falling in the arc-shaped groove 211 during the cleaning operation, and ensures that the bed material will not fall on the side of the moving block 241 away from the horizontal pipeline 41.

[0034] When the slag falling stopper 231 is turned to the maximum position, the inner diameter formed by the slag falling stopper 231, the upper isolation piece 23 and the arc-shaped groove 211 cooperates with the outer diameter of the moving block 241, and the moving block 241 can drag all the bed material in the arc-shaped groove 211 to the horizontal pipeline 41 and then discharge from the obliquely opened discharge passage 42. Thus, the cleaning of the bed material in the air duct is completed, so that even if the air cap falls off and the bed material enters the air chamber, the bed material can also be prevented from blocking the air inlet passage, and the safe operation of the fluidized bed boiler is ensured.

[0035] The above is only the embodiment of the present application, and the common knowledge of specific structure and characteristics in the scheme is not described in detail. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A structure for igniting a slag chute, characterized by: The application relates to a wind chamber wall (1), a bed material collecting mechanism (2) and a wind chamber baffle (3), wherein the bed material collecting mechanism (2) and the wind chamber baffle (3) are installed in an internal passage of the wind chamber wall (1), the bed material collecting mechanism (2) is located below the wind chamber baffle (3), the bed material collecting mechanism (2) comprises a bed material collecting seat (21) and a bed material moving assembly (24), one end of the bed material collecting seat (21) corresponds to a transverse pipeline (41) of a releasing mechanism (4) penetrating an inner wall of the wind chamber wall (1), and the bed material moving assembly (24) is transversely and slidingly connected to the bed material collecting seat (21) and the transverse pipeline (41).

2. A structure for igniting a slag chute according to claim 1, characterized in that: An arc-shaped groove (211) is arranged on an upper surface of the bed material collecting seat (21) and faces downwards, the bed material moving assembly (24) comprises a moving block (241), the arc-shaped groove (211) has the same size as an inner diameter of the transverse pipeline (41) of the releasing mechanism (4), and the arc-shaped groove (211) and the moving block (241) are matched with each other in diameter.

3. A structure for igniting a slag chute according to claim 2, characterized in that: An upper inclined surface (212) is arranged above one end of the arc-shaped groove (211) of the bed material collecting seat (21) and faces away from air inlet of the wind chamber, a positioning seat (213) is arranged on the other side of the upper inclined surface (212), and the wind chamber baffle (3) is installed on the positioning seat (213).

4. A structure for igniting a slag chute according to claim 3, characterized in that: The wind chamber baffle (3) has an inclined surface with the same angle as that of the upper inclined surface (212), and a ventilation hole is arranged on a surface of the wind chamber baffle (3).

5. A structure for igniting a slag chute according to claim 3, wherein: One end of an upper isolation piece (23) is installed above one end of the arc-shaped groove (211) of the bed material collecting seat (21) and faces the air inlet of the wind chamber, and the other end of the upper isolation piece (23) is connected to a slag falling blocking piece (231).

6. A structure for igniting a slag chute according to claim 5, characterized in that: An end head (22) is arranged at one end of the bed material collecting seat (21) and faces away from the transverse pipeline (41), a groove (221) matched with an outer diameter of the moving block (241) is arranged on the moving block (241) in a sliding direction, a supporting piece (243) is arranged on the moving block (241) at a position corresponding to the slag falling blocking piece (231) in a direction close to the transverse pipeline (41), when the slag falling blocking piece (231) rotates to a maximum position, an inner diameter formed by the slag falling blocking piece (231), the upper isolation piece (23) and the arc-shaped groove (211) is matched with an outer diameter of the moving block (241).

7. A structure for igniting a slag chute according to claim 2, characterized in that: The releasing mechanism (4) comprises a discharging passage (42) and a slag discharging pipeline end piece (43), the discharging passage (42) is obliquely arranged below the transverse pipeline (41), the bed material moving assembly (24) further comprises a moving rod (242), one end of the moving rod (242) is fixed to one side of the moving block (241) close to the transverse pipeline (41), the other end of the moving rod (242) is fixed to the slag discharging pipeline end piece (43), and the slag discharging pipeline end piece (43) is transversely and slidingly connected to the transverse pipeline (41).

8. A structure for igniting a slag chute according to claim 7, characterized in that: The slag discharge pipe end piece (43) comprises a connecting seat (431) and a positioning ring (432), the other end of the moving rod (242) is fixed on the connecting seat (431), and the positioning ring (432) is movably sleeved on the port of the connecting seat (431) and is screwed on the port of the transverse pipe (41).

9. A structure for igniting a slag chute according to claim 8, characterized in that: The slag discharge pipe end piece (43) further comprises a movable rod (433), the port of the transverse pipe (41) is provided with a hole, one end of the movable rod (433) is fixedly connected to the connecting seat (431), and the other end is connected to the hole in the port of the transverse pipe (41) in a plug-in manner.

Images