CN216281464U

CN216281464U - Soot blower for SCR reactor

Info

Publication number: CN216281464U
Application number: CN202122914358.3U
Authority: CN
Inventors: 尹晓红; 王新立; 孙坤
Original assignee: Qingdao University of Science and Technology
Current assignee: Qingdao University of Science and Technology
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-04-12
Anticipated expiration: 2031-11-25

Abstract

The utility model provides a soot blower for an SCR (selective catalytic reduction) reactor, which relates to the technical field of soot blowers and comprises a rectifier body, wherein a connecting groove is formed in the middle of the bottom of the rectifier body, an annular sliding groove is formed in the bottom of the rectifier body, which is close to the edge of the outer surface, an annular clamping block is connected inside the annular sliding groove in a sliding manner, a diffusion head is fixed at the bottom of the annular clamping block, a sealing ring is fixed at the top of the diffusion head, and the sealing ring is sleeved on the outer surface of the rectifier body. Resulting in a problem of low cleaning efficiency in practical use.

Description

Soot blower for SCR reactor

Technical Field

The utility model relates to the technical field of soot blowers, in particular to a soot blower for an SCR reactor.

Background

With the development of society, industrial power consumption and civil power consumption are rising year by year, and boilers are indispensable equipment of power plants. Boilers are essentially energy converters which use the heat energy released by the combustion of a fuel, usually pulverized coal, or other heat energy to heat a working fluid, water or other fluid, to a certain parameter, in order to prevent NO in the exhaust gases after the combustion of the coal in the boiler_xThe environment is polluted by (nitrogen oxides) or dust particles, and dust pollutants generated by a boiler need to be treated by a soot blower.

However, the existing soot blower usually adopts the ventilation pipe to be in butt joint with high-pressure air during soot blowing operation, and when the ventilation pipe extends into the reactor, the ventilation pipe can only blow soot locally due to the small air outlet area of the pipeline, so that the cleaning efficiency is not high during actual use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that when high-pressure air in a pipeline flows into the diffusion head, the diffusion head rotates under the blowing of the high-pressure air by rotationally connecting the diffusion head to the outer surface of the pipeline, so that the high-pressure air can be dispersedly sprayed out, the blowing area is larger, and the problem that the cleaning efficiency is low in practical use because only local soot blowing can be carried out due to the fact that the air outlet area of the traditional pipeline is small is solved.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a soot blower for SCR reactor, includes the rectifier body, the bottom of rectifier body is located the middle part and has seted up the spread groove, the bottom of rectifier body is close to surface edge and has seted up annular spout, the inside sliding connection of annular spout has annular fixture block, the bottom of annular fixture block is fixed with the diffusion head, the top of diffusion head is fixed with the sealing washer, the sealing washer registrates on the surface of rectifier body, the inside bottom surface of diffusion head is located the middle part and is fixed with the spliced pole, the top of spliced pole is rotated and is connected the inside at the spread groove, be fixed with the backup pad between the inner wall of diffusion head, the spliced pole runs through in the backup pad, there is the clearance between the inner wall of backup pad and the surface of spliced pole.

Preferably, a plurality of exhaust vents have been seted up along the circumferencial direction equidistance to the surface of diffusion head, the top of backup pad is fixed with a plurality of guide vane along the circumferencial direction equidistance.

Preferably, the outer surface of the rectifier body is sleeved with a guide sleeve, the bottom of the guide sleeve and the outer surface of the rectifier body are both fixed with a butt joint flange plate, and the rectifier body is clamped inside the guide sleeve.

Preferably, a plurality of supporting rods are fixed between the inner walls of the guide sleeves and close to one side edge along the circumferential direction at equal intervals, and a motor is fixed between one ends of the supporting rods.

Preferably, the inside top surface of rectifier body is located the middle part and is fixed with fixed cover, the cross draw-in groove has been seted up to one side of fixed cover, the inside bottom surface of rectifier body is located the middle part and is connected with the pivot through the bearing rotation, the top of pivot and the output of motor all are fixed with the cross fixture block.

Preferably, two the equal block of cross fixture block is in the inside of cross draw-in groove, the surface of pivot is fixed with a plurality of entrainment blades along the circumferencial direction equidistance, a plurality of air outlets have been seted up along the circumferencial direction equidistance in the bottom of rectifier body, a plurality of openings have been seted up at the top of rectifier body.

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

1. when the device is used, the rectifier body is connected with an external high-pressure pipeline and a guide sleeve through a butt flange, when high-pressure air flows into the rectifier body through a through hole in the top of the rectifier body, the entrainment blades scatter high-pressure air flowing at high speed under the rotation of the motor, so that the high-pressure air flows smoothly when passing through an air outlet in the bottom of the rectifier body, when the high-pressure air flowing smoothly flows into the diffusion head, the high-pressure air is in contact with the guide blades on the supporting plate, and the acting force of the high-pressure air acting on the guide blades pushes the diffusion head to rotate, so that the high-pressure air can have larger cleaning force when being sprayed out of the diffusion head.

2. According to the utility model, the diffusion head is rotatably connected to the bottom of the rectifier body through the matching of the connecting column and the connecting groove as well as the annular chute and the annular fixture block, the guide blades are fixed on the supporting plate, the supporting plate is fixedly connected with the diffusion head, and a gap is reserved between the supporting plate and the connecting column, so that high-pressure air can flow into the diffusion head after acting on the guide blades and finally flows out of the air outlet hole, the diffusion head is sealed through the sealing ring when being connected with the rectifier body, the high-pressure air in the diffusion head is prevented from leaking from an interface, the bottom of the rectifier body is provided with the plurality of air outlets, and the high-pressure air can be dispersed when acting on the guide blades, so that the diffusion head is uniformly stressed and stably rotated.

Drawings

FIG. 1 is a schematic sectional perspective view of a soot blower for an SCR reactor according to the present invention;

FIG. 2 is a schematic cross-sectional perspective view of a rectifier body in a soot blower for an SCR reactor according to the present invention;

FIG. 3 is a schematic cross-sectional perspective view of a diffusion head in a soot blower for an SCR reactor according to the present invention;

fig. 4 is an enlarged view of the utility model at a in fig. 1.

Illustration of the drawings: 1. a rectifier body; 2. a guide sleeve; 3. butting flanges; 4. a diffusion head; 5. an air outlet; 6. connecting columns; 7. an annular chute; 8. connecting grooves; 9. an air outlet; 10. a motor; 11. a strut; 12. a rotating shaft; 13. sucking the blade; 14. a port; 15. fixing a sleeve; 16. a cross clamping groove; 17. a cross-shaped fixture block; 18. a seal ring; 19. an annular fixture block; 20. a guide blade; 21. and a support plate.

Detailed Description

In order that the above objects, features and advantages of the present invention can be 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 thus the present invention is not limited to the specific embodiments of the present disclosure.

Embodiment 1, as shown in fig. 1 to 4, the present invention provides a soot blower technical solution for an SCR reactor: including rectifier body 1, rectifier body 1's bottom is located the middle part and has seted up spread groove 8, rectifier body 1's bottom is close to surface edge and has seted up annular spout 7, the inside sliding connection of annular spout 7 has annular fixture block 19, the bottom of annular fixture block 19 is fixed with diffusion head 4, diffusion head 4's top is fixed with sealing washer 18, sealing washer 18 registrates on rectifier body 1's surface, diffusion head 4's inside bottom surface is located the middle part and is fixed with spliced pole 6, spliced pole 6's top is rotated and is connected the inside at spread groove 8, be fixed with backup pad 21 between diffusion head 4's the inner wall, spliced pole 6 runs through in backup pad 21, there is the clearance between backup pad 21's inner wall and spliced pole 6's the surface.

The whole embodiment 1 achieves the effect that when the device is used, the rectifier body 1 is firstly connected with an external high-pressure pipeline and a guide sleeve 2 through a butt flange 3, when the high-pressure gas flows to the inside of the rectifier body 1 through the port 14 at the top of the rectifier body 1, the entrainment blades 13 scatter the high-pressure air flowing at a high speed by the rotation of the motor 10 so as to smoothly flow while passing through the air outlet 9 at the bottom of the rectifier body 1, when the high pressure air flowing gently flows to the inside of the diffusion head 4 and contacts with the guide blades 20 on the support plate 21, the action force of the high pressure air on the guide blades 20 pushes the diffusion head 4 to rotate, thereby make high-pressure air have bigger cleaning power when spouting diffusion head 4, solved the air-out area of traditional pipeline less can only blow the soot cleaning to the part, lead to the problem that clean efficiency is not high when in-service use.

Embodiment 2, as shown in fig. 1-4, the outer surface of the diffusion head 4 is provided with a plurality of air outlets 5 at equal intervals along the circumferential direction, the top of the supporting plate 21 is fixed with a plurality of guide vanes 20 at equal intervals along the circumferential direction, the outer surface of the rectifier body 1 is sleeved with a guide sleeve 2, the bottom of the guide sleeve 2 and the outer surface of the rectifier body 1 are both fixed with a butt-joint flange 3, the rectifier body 1 is clamped inside the guide sleeve 2, a plurality of support rods 11 are fixed between the inner walls of the guide sleeve 2 near one side edge along the circumferential direction at equal intervals, a motor 10 is fixed between one ends of the plurality of support rods 11, the top surface of the interior of the rectifier body 1 at the middle part is fixed with a fixed sleeve 15, one side of the fixed sleeve 15 is provided with a cross-shaped clamping slot 16, the bottom surface of the interior of the rectifier body 1 at the middle part is rotatably connected with a rotating shaft 12 through a bearing, the top of the rotating shaft 12 and the output end of the motor 10 are both fixed with a cross-shaped clamping block 17, two cross fixture blocks 17 all block in the inside of cross draw-in groove 16, the surface of pivot 12 is fixed with a plurality of entrainment blades 13 along the circumferencial direction equidistance, and a plurality of air outlets 9 have been seted up along the circumferencial direction equidistance in the bottom of rectifier body 1, and a plurality of openings 14 have been seted up at the top of rectifier body 1.

The effect that its whole embodiment 2 reaches does, make diffusion head 4 rotate the bottom of connecting at rectifier body 1 through the cooperation of spliced pole 6 and spread groove 8 and annular spout 7 and annular fixture block 19, because guide vane 20 fixes in backup pad 21, backup pad 21 and diffusion head 4 fixed connection, and leave the gap between backup pad 21 and the spliced pole 6, so high-pressure air can flow to the inside of diffusion head 4 behind acting on guide vane 20, flow out from exhaust vent 5 at last, seal through sealing washer 18 when diffusion head 4 is connected with rectifier body 1, prevent that the inside high-pressure air of diffusion head 4 from the kneck leakage, set up a plurality of air outlets 9 in rectifier body 1's bottom, make high-pressure air can disperse when acting on guide vane 20, make diffusion head 4 atress even, stable in rotation.

The working principle is as follows: when high-pressure air flows into the rectifier body 1 through the through hole 14 at the top of the rectifier body 1, the entrainment blades 13 scatter high-pressure air flowing at high speed under the rotation of the motor 10, so that the high-pressure air flows smoothly when passing through the air outlet 9 at the bottom of the rectifier body 1, when the high-pressure air flowing smoothly flows into the diffusion head 4, the high-pressure air contacts with the guide blades 20 on the support plate 21, the acting force of the high-pressure air on the guide blades 20 pushes the diffusion head 4 to rotate, so that the high-pressure air has larger cleaning force when being jetted out of the diffusion head 4, the plurality of air outlets 9 are arranged at the bottom of the rectifier body 1, so that the high-pressure air can be scattered when acting on the guide blades 20, the stress of the diffusion head 4 is uniform, the rotation is stable, because the guide blades 20 are fixed on the support plate 21, the support plate 21 is fixedly connected with the diffusion head 4, and a gap is reserved between the support plate 21 and the connecting column 6, the high pressure air can flow toward the inside of the diffusion head 4 after acting on the guide vane 20 and finally flow out of the air outlet 5.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes by using the technical contents disclosed in the above description to other fields, but any simple modification, equivalent change and change made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A sootblower for an SCR reactor, comprising a rectifier body (1), characterized in that: the bottom of the rectifier body (1) is provided with a connecting groove (8) at the middle part, an annular sliding chute (7) is arranged at the bottom of the rectifier body (1) near the edge of the outer surface, an annular clamping block (19) is connected inside the annular sliding groove (7) in a sliding manner, a diffusion head (4) is fixed at the bottom of the annular clamping block (19), a sealing ring (18) is fixed at the top of the diffusion head (4), the sealing ring (18) is sleeved on the outer surface of the rectifier body (1), a connecting column (6) is fixed at the middle part of the inner bottom surface of the diffusion head (4), the top of the connecting column (6) is rotatably connected inside the connecting groove (8), a support plate (21) is fixed between the inner walls of the diffusion heads (4), the connecting column (6) penetrates through the support plate (21), a gap exists between the inner wall of the support plate (21) and the outer surface of the connecting column (6).

2. The sootblower for an SCR reactor of claim 1, wherein: a plurality of exhaust vents (5) have been seted up along the circumferencial direction equidistance to the surface of diffusion head (4), the top of backup pad (21) is fixed with a plurality of guide blade (20) along the circumferencial direction equidistance.

3. The sootblower for an SCR reactor of claim 1, wherein: the rectifier comprises a rectifier body (1) and is characterized in that a guide sleeve (2) is sleeved on the outer surface of the rectifier body (1), butt joint flange plates (3) are fixed on the bottom of the guide sleeve (2) and the outer surface of the rectifier body (1), and the rectifier body (1) is clamped inside the guide sleeve (2).

4. A sootblower for an SCR reactor as defined in claim 3, wherein: be close to a side edge between the inner wall of uide bushing (2) and be fixed with a plurality of branches (11) along circumferencial direction equidistance, it is a plurality of be fixed with motor (10) between the one end of branch (11).

5. The sootblower for an SCR reactor of claim 4, wherein: the rectifier comprises a rectifier body (1), and is characterized in that a fixed sleeve (15) is fixed to the middle of the inner top surface of the rectifier body (1), a cross clamping groove (16) is formed in one side of the fixed sleeve (15), a rotating shaft (12) is connected to the middle of the inner bottom surface of the rectifier body (1) in a rotating mode through a bearing, and a cross clamping block (17) is fixed to the top of the rotating shaft (12) and the output end of a motor (10).

6. The sootblower for an SCR reactor of claim 5, wherein: two equal block of cross fixture block (17) is in the inside of cross draw-in groove (16), the surface of pivot (12) is fixed with a plurality of book and inhales blade (13) along the circumferencial direction equidistance, a plurality of air outlets (9) have been seted up along the circumferencial direction equidistance in the bottom of rectifier body (1), a plurality of openings (14) have been seted up at the top of rectifier body (1).