CN218718797U

CN218718797U - Rotary air preheater air seal structure

Info

Publication number: CN218718797U
Application number: CN202223100788.2U
Authority: CN
Inventors: 宋峰; 翟云飞; 宋雅莉; 陈章; 杭云
Original assignee: Ma'anshan Dangtu Power Generation Co ltd
Current assignee: Ma'anshan Dangtu Power Generation Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-03-24
Anticipated expiration: 2032-11-22

Abstract

The utility model provides a rotary air heater atmoseal structure, relate to air heater technical field, including a jib, the outside of a jib is provided with the atmoseal bottom plate, the outside of atmoseal bottom plate is provided with the seal receptacle, the outer wall one side of seal receptacle has linked up 2114 packing, 2114 packing is located a jib outer wall both sides, the top of 2114 packing is provided with the packing gland, the top of packing gland is provided with the gasket, the top of gasket is run through and is provided with the M8 bolt, the top of atmoseal bottom plate is provided with the support, the outside of a jib is provided with 64 packing rings, the top of 64 packing rings is provided with M64 nut, the junction of a jib and support is provided with first steel sheet, the connection cross-section of a jib and support is provided with the packing ring, the outside of packing ring is run through and is provided with the pin, air leakage between the air heater structure has effectively been reduced, it drives the dust and to air heater inside pipeline jam problem to have reduced to leak out simultaneously, and economic benefits has been improved.

Description

Rotary air preheater air seal structure

Technical Field

The utility model relates to an air heater technical field especially relates to a rotary air heater atmoseal structure.

Background

Air preheaters, generally referred to as air preheaters for short, are generally applied to coal-fired utility boilers and can be divided into a pipe box type boiler and a rotary type boiler, wherein the rotary type boilers are divided into a fan cover rotary type boiler and a heating surface rotary type boiler, the utility boilers usually adopt the heating surface rotary type preheaters, and the air preheaters are generally applied to boilers in a two-bin type, a three-bin type and a four-bin type.

In the prior art, due to the fact that coal is replaced, the air leakage rate of the air preheater is high in the rotation process of the rotor, the air sealing performance is poor when the air leakage rate is over 10%, dust is easily driven to cause partial pipelines inside the preheater to be blocked, and meanwhile air short circuit can be formed, so that coal consumption of a coal-fired power station boiler is increased, efficiency is reduced, and economic benefits are affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the air seal performance is poor because the coal type is changed, the air seal rate of the air preheater is larger in the rotor rotation process, more than 10%, the air seal performance is poor, the dust is easily driven to cause the blockage of the internal part pipeline of the preheater, and the air short circuit is formed, thereby causing the coal consumption of the coal-fired power plant boiler to increase, the efficiency is reduced, the economic benefit is influenced, and the rotary air preheater air seal structure is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a rotation air heater atmoseal structure, includes a jib, the outside of jib is provided with the atmoseal bottom plate, the outside of atmoseal bottom plate is provided with the seal receptacle, the outer wall one side of seal receptacle has linked up 2114 packing, 2114 packing is located a jib outer wall both sides, the top of 2114 packing is provided with packing gland, packing gland's top is provided with the gasket, the top of gasket is run through and is provided with the M8 bolt, the top of atmoseal bottom plate is provided with the support, the outside of jib is provided with 64 packing rings, the top of 64 packing rings is provided with M64 nut, the junction of jib and support is provided with first steel sheet, the connection cross-section of jib and support is provided with the packing ring, the outside of packing ring is run through and is provided with the pin.

Preferably, the M8 bolt is made of medium carbon steel, and the support hanger rod and the pin are made of 45 steel.

Preferably, the 2114 packing is made of flexible graphite.

Preferably, the bottom of the air seal bottom plate is provided with an air seal base, and one side of the outer wall of the air seal base is provided with a rotor.

Preferably, a chain plate assembly is arranged on one side of the outer portion of the supporting suspension rod, a primary air side fan-shaped plate is arranged on the outer portion of the chain plate assembly, and the supporting suspension rod is located on two sides of the rotor.

Preferably, a middle beam side fan-shaped plate is arranged on the other side of the outer portion of the supporting and hanging rod, bearing seats are arranged on two sides of the rotor, hole ends are formed in the surfaces of the bearing seats, and second steel plates are arranged at the tops of the hole ends.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. the utility model discloses in, the outside through a jib is provided with the atmoseal bottom plate, the outside of atmoseal bottom plate is provided with the seal receptacle, adopt seal weld airtight between seal receptacle and the atmoseal bottom plate, effectively reduce structure hourglass wind nature, the outer wall one side at the seal receptacle has linked up the 2114 packing, the 2114 packing is located a jib outer wall both sides, the top of 2114 packing is provided with the packing gland, gasket and the M8 bolt mating reaction that the gasket top that sets up run through the setting at packing gland top are under, effectively fasten packing gland and 2114 packing, the leakproofness has been ensured, the top of atmoseal bottom plate is provided with the support, under the M64 nut mating reaction of 64 packing ring and 64 packing ring top setting of propping up the outside setting of jib, effectively play the fixed action to a jib, first steel sheet at a jib and support junction setting, the packing ring that props up jib and support connection cross-section setting, the outside pin mating reaction that runs through the setting of packing ring, air leakage between the air heater structure has effectively been reduced, it drives the dust to have fallen to leak wind and has improved economic benefits to the inside pipeline jam problem of air heater.

Drawings

FIG. 1 is a schematic cross-sectional view of an air seal structure of a rotary air preheater according to the present invention;

FIG. 2 is an enlarged schematic view of the Z-position in the structure diagram 1 of the air seal of the rotary air preheater according to the present invention;

FIG. 3 is an enlarged schematic view of the X-position in the structure diagram 1 of the air seal of the rotary air preheater according to the present invention;

FIG. 4 is a schematic cross-sectional view of a center sill of an air seal structure of a rotary air preheater according to the present invention;

fig. 5 is an enlarged schematic structural diagram of a location C in the structure diagram 4 of the air seal of the rotary air preheater of the present invention.

Illustration of the drawings: 1. a boom is supported; 2. a sealing seat; 3. an M8 bolt; 4. a gasket; 5. 2114 packing; 6. packing gland; 7. an M64 nut; 8. 64 washers; 9. a support; 10. a first steel plate; 11. a gasket; 12. a pin; 13. a second steel plate.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations set forth in the following description of the specific embodiments.

Example 1

As shown in fig. 1-5, the utility model provides a technical solution: the utility model provides a rotary air heater atmoseal structure, including a jib 1, the outside of a jib 1 is provided with the atmoseal bottom plate, the outside of atmoseal bottom plate is provided with seal receptacle 2, the outer wall one side of seal receptacle 2 links up 2114 packing 5, 2114 packing 5 is located a 1 outer wall both sides of jib, the top of 2114 packing 5 is provided with packing gland 6, packing gland 6's top is provided with gasket 4, the top of gasket 4 is run through and is provided with M8 bolt 3, the top of atmoseal bottom plate is provided with support 9, the outside of a jib 1 is provided with 64 packing rings 8, the top of 64 packing rings 8 is provided with M64 nut 7, the junction of a jib 1 and support 9 is provided with first steel sheet 10, the connection cross-section of a jib 1 and support 9 is provided with packing ring 11, the outside of packing ring 11 is run through and is provided with pin 12.

In this embodiment, an air seal bottom plate is arranged outside a support boom 1, a seal seat 2 is arranged outside the air seal bottom plate, 2114 packing 5 is connected to one side of the outer wall of the seal seat 2, the 2114 packing 5 is located on two sides of the outer wall of the support boom 1, a packing gland 6 is arranged at the top of the 2114 packing 5, under the action of an M8 bolt 3 which penetrates through the top of a gasket 4 and the top of the gasket 4 which are arranged at the top of the packing gland 6, the packing gland 6 and the packing 2114 are structurally sealed, a support 9 is arranged at the top of the air seal bottom plate, a 64 gasket 8 is arranged outside the support boom 1, under the action of an M64 nut 7 which is arranged at the top of the 64 gasket 8, the height of a sector plate is conveniently adjusted, a first steel plate 10 is arranged at the joint of the support boom 1 and the support 9, a boom hole at the primary air position on the air seal base is sealed through the first steel plate 10, and a gasket 11 which is arranged at the joint section of the support boom 1 and the support 9 is connected with a pin 12 which penetrates through the outside the gasket 11 for spot welding.

Example 2

As shown in fig. 1-5, the material of M8 bolt 3 is medium carbon steel, the material of a jib 1 and a pin 12 is 45 steel, the material of 2114 packing 5 is flexible graphite, the bottom of an air seal bottom plate is provided with an air seal base, the outer wall one side of the air seal base is provided with a rotor, the outside one side of the jib 1 is provided with a chain plate component, the outside of the chain plate component is provided with a primary air side fan-shaped plate, the jib 1 is located on two sides of the rotor, the outside opposite side of the jib 1 is provided with a middle beam side fan-shaped plate, the two sides of the rotor are both provided with bearing seats, the surface of the bearing seat is provided with a hole end, and the top of the hole end is provided with a second steel plate 13.

In this embodiment, the material of M8 bolt 3 is medium carbon steel, the material of propping up jib 1 and pin 12 is 45 steel, the material of 2114 packing 5 is flexible graphite, be provided with the atmoseal base in the bottom of atmoseal bottom plate, outer wall one side of atmoseal base is provided with the rotor, be provided with the link joint subassembly in the outside one side of propping up jib 1, the link joint subassembly can be retrieved and recycled again, be provided with the fan-shaped board of wind side in the outside of link joint subassembly, prop up jib 1 and be located the rotor both sides, be provided with centre sill side fan-shaped board at the outside opposite side of propping up jib 1, the rotor both sides all are provided with the bearing frame, the hole end has been seted up on the surface of bearing frame, the top of hole end is provided with second steel sheet 13, the hole end that the last jib of wind and centre sill produced is sealed through second steel sheet 13.

The working principle of the embodiment is as follows: when the air seal device is used, firstly, a worker installs the support hanger rod 1 through the connecting end arranged on the air seal base plate, namely, the support hanger rod 1 is drilled and ground again on the air seal base plate, the cut steel is taken out after the hole is drilled, the damage to the air preheater caused by the cut steel falling into the rotary air preheater is avoided, then the sealing seat 2 is connected with the support hanger rod 1, the structural air leakage of a gap generated between the support hanger rod 1 and the air seal base plate when the rotary air preheater operates is avoided, then the sealing seat 2 is connected with the sealing base plate in a sealing welding manner, then the 2114 packing 5 is filled in the gap between the sealing seat 2 and the support hanger rod 1, and then the 2114 packing 5 is acted through the packing gland 6, then fix under the effect of bolt M83 and gasket 4, further improve the leakproofness between seal receptacle 2 and the gas seal bottom plate, later set up support 9 in the outer wall side of a jib 1, later fix support 9 and a jib 1 through M64 nut 7 and 64 packing ring 8, simultaneously seal the jib hole of last wind department of gas seal base through first steel sheet 10, the hole end that the last jib of wind and intermediate beam produced is sealed through second steel sheet 13, later can adjust the height of sector plate through M64 nut 7, later through the cooperation of packing ring 11 and pin 12, connect the link plate subassembly in the spot welding technology, the link plate subassembly can utilize original part again simultaneously, concrete implementation process finishes.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a rotary air preheater atmoseal structure, includes boom (1), its characterized in that: the outside of propping up jib (1) is provided with the atmoseal bottom plate, the outside of atmoseal bottom plate is provided with seal receptacle (2), the outer wall one side of seal receptacle (2) has linked up 2114 packing (5), 2114 packing (5) are located jib (1) outer wall both sides, the top of 2114 packing (5) is provided with packing gland (6), the top of packing gland (6) is provided with gasket (4), the top of gasket (4) is run through and is provided with M8 bolt (3), the top of atmoseal bottom plate is provided with support (9), the outside of propping up jib (1) is provided with 64 packing ring (8), the top of 64 packing ring (8) is provided with M64 nut (7), the junction of propping up jib (1) and support (9) is provided with first steel sheet (10), the connection cross-section of propping up jib (1) and support (9) is provided with packing ring (11), the outside of packing ring (11) is run through and is provided with pin (12).

2. A rotary air preheater air seal configuration according to claim 1, wherein: the M8 bolt (3) is made of medium carbon steel, and the support hanging rod (1) and the pin (12) are made of 45 steel.

3. A rotary air preheater air seal configuration according to claim 1, wherein: the 2114 packing (5) is made of flexible graphite.

4. A rotary air preheater air seal configuration according to claim 1, wherein: the bottom of the air seal bottom plate is provided with an air seal base, and one side of the outer wall of the air seal base is provided with a rotor.

5. A rotary air preheater air seal configuration according to claim 4, wherein: a chain plate assembly is arranged on one side of the outer portion of the supporting suspension rod (1), a primary air side fan-shaped plate is arranged on the outer portion of the chain plate assembly, and the supporting suspension rod (1) is located on two sides of the rotor.

6. A rotary air preheater air seal configuration according to claim 5, wherein: the outer other side of the support suspender (1) is provided with a middle beam side fan-shaped plate, the two sides of the rotor are both provided with bearing seats, the surface of each bearing seat is provided with a hole end, and the top of each hole end is provided with a second steel plate (13).