CN215784214U - Subsonic spraying device for resisting erosive wear of boiler of thermal power plant - Google Patents
Subsonic spraying device for resisting erosive wear of boiler of thermal power plant Download PDFInfo
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- CN215784214U CN215784214U CN202122389827.4U CN202122389827U CN215784214U CN 215784214 U CN215784214 U CN 215784214U CN 202122389827 U CN202122389827 U CN 202122389827U CN 215784214 U CN215784214 U CN 215784214U
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Abstract
The utility model discloses a subsonic spraying device for resisting erosive wear of a boiler in a thermal power plant, which comprises a spraying box body, wherein a mixing cavity and a combustion-supporting cavity are sequentially arranged in the spraying box body from top to bottom, an oxygen storage tank and an acetylene fuel storage tank are arranged at the bottom of the inner wall of the combustion-supporting cavity, and a spiral mixing bin and a mixing fan are arranged at the bottom of the inner wall of the mixing cavity. The whole is safe and reliable, and the practical value is high.
Description
Technical Field
The utility model relates to the technical field of boiler spraying, in particular to a subsonic spraying device for erosion wear resistance of a boiler in a thermal power plant.
Background
The subsonic flame spraying adopts combustible gas as a heat source to melt special composite alloy powder to form particles, and atomized particle flow is sprayed to the surface of a workpiece at the speed of 250m/s through special injection-suction type air inlet to form a coating. The subsonic spraying has the characteristics of high spraying speed, good bonding strength, low porosity, no deformation of workpieces and the like, and has strong corrosion resistance and wear resistance. The anti-cavitation corrosion-resistant pressure-bearing component is mainly applied to the inner walls of anti-cavitation corrosion-resistant pressure-bearing components of steam turbine cylinder bodies, pumps and heaters. In order to prolong the service life of the boiler of the thermal power plant, the scouring resistance and the wear resistance of the boiler are improved by adopting a subsonic spraying mode before the boiler is put into use.
The proportion regulation and control of current spraying device coating is inconvenient, and just the fuel contacts with coating powder when the spraying for coating powder and fuel mix inadequately, and the boiler surface produces the granule arch easily after the spraying, influences the spraying quality.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a subsonic spraying device for erosion and wear resistance of a boiler in a thermal power plant, and aims to solve the problems that the existing spraying device in the background art is inconvenient in paint proportion regulation and control, fuel is contacted with paint powder during spraying, the paint powder and the fuel are not fully mixed, and the sprayed boiler surface is easy to generate particle protrusions to influence the spraying quality.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a subsonic speed spraying device for resistant erosive wear of boiler of thermal power plant, includes the spraying box, the hybrid chamber and the combustion-supporting chamber have been seted up in proper order to the inside top-down of spraying box, the bottom of combustion-supporting intracavity wall is equipped with oxygen storage tank and acetylene fuel storage tank, the bottom of hybrid chamber inner wall is equipped with spiral blending bunker and compounding fan, the fixed spiral water conservancy diversion frame that is provided with in inside of spiral blending bunker, the fixed intercommunication in one side of spiral blending bunker has the combustion improver import, the fixed intercommunication in one end of combustion improver import and the air outlet of compounding fan, the fixed intercommunication of air outlet of compounding fan has the three-way pipe, the front in combustion-supporting chamber articulates there is lower cabinet door, the outside fixed mounting of lower cabinet door has controller and touch-control display screen.
Preferably, the top end of the oxygen storage tank and the top end of the acetylene fuel storage tank are respectively and fixedly communicated with two ends of the three-way pipe, electromagnetic valves are fixedly installed at the joint of the oxygen storage tank and the three-way pipe and the joint of the acetylene fuel storage tank and the three-way pipe, and the two electromagnetic valves are electrically connected with the controller.
Preferably, one side of the top end of the spiral mixing bin, which is close to the combustion improver inlet, is provided with a coating inlet, the top end of the spraying box body is fixedly provided with a spraying powder storage tank, the bottom end of the spraying powder storage tank is fixedly communicated with the top end of the coating inlet, an electromagnetic flow-limiting valve is fixedly mounted at the joint of the spraying powder storage tank and the coating inlet, and the electromagnetic flow-limiting valve is electrically connected with the controller.
Preferably, the fixed intercommunication in one side that the combustion improver import was kept away from to spiral blending bunker has the material passageway that spouts that extends to the spraying box outside, the one side of spouting the material passageway is equipped with the spray tube, the one end fixed mounting that the spraying box was kept away from to the spray tube has the spray gun, the fixed threaded connection head that is provided with in one end of spray gun, threaded connection has thermal-insulated splashproof cover on the threaded connection head.
Preferably, the outer side of the mixing cavity is hinged with an upper cabinet door, the surface of the upper cabinet door is fixedly provided with three barometers, and the three barometers are respectively and fixedly communicated with the oxygen storage tank, the acetylene fuel storage tank and the spiral mixing bin through pipelines.
Preferably, four corners of the bottom of the spraying box body are fixedly provided with universal wheels.
Preferably, the mixing fan and the touch display screen are both electrically connected with the controller, and the controller is electrically connected with the power supply through an external switch.
Compared with the prior art, the utility model has the beneficial effects that: this subsonic speed spraying device has increased spiral blending bunker, can pour into fuel and coating powder into blending bunker in advance and carry out the spiral and mix before the spraying, under the effect of spiral water conservancy diversion frame and compounding fan, can make the two intensive mixing, the easy granule arch that appears in boiler surface after effectively having avoided the spraying, the poor problem of spraying unevenness quality, coating can be regulated and control according to the condition of spraying is nimble, operation convenient to use is quick, whole safe and reliable, practical value is high.
Drawings
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a cross-sectional view of the spiral mixing silo of the present invention;
fig. 4 is an enlarged view of part a of the present invention.
In the figure: 1. spraying a box body; 2. a nozzle; 3. a spray gun; 4. spraying a powder storage tank; 5. a controller; 6. a touch display screen; 7. a universal wheel; 8. a lower cabinet door; 9. the upper cabinet door is arranged; 10. a barometer; 11. an oxygen storage tank; 12. an acetylene fuel storage tank; 13. a combustion-supporting chamber; 14. an electromagnetic valve; 15. a material spraying channel; 16. a spiral mixing bin; 17. a mixing fan; 18. an electromagnetic current limiting valve; 19. a mixing chamber; 20. a three-way pipe; 21. a spiral flow guiding frame; 22. a coating inlet; 23. a combustion improver inlet; 24. a heat-insulating splash shield; 25. a threaded connector.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-4, the utility model provides a subsonic spraying device for resisting scouring and wear of a boiler in a thermal power plant, which comprises a spraying box body 1, wherein a mixing cavity 19 and a combustion-supporting cavity 13 are sequentially arranged in the spraying box body 1 from top to bottom, an oxygen storage tank 11 and an acetylene fuel storage tank 12 are arranged at the bottom of the inner wall of the combustion-supporting cavity 13, a spiral mixing bin 16 and a mixing fan 17 are arranged at the bottom of the inner wall of the mixing cavity 19, a spiral guide frame 21 is fixedly arranged in the spiral mixing bin 16, a combustion improver inlet 23 is fixedly communicated with one side of the spiral mixing bin 16, one end of the combustion improver inlet 23 is fixedly communicated with an air outlet of the mixing fan 17, an air outlet of the mixing fan 17 is fixedly communicated with a three-way pipe 20, a lower cabinet door 8 is hinged to the front surface of the combustion-supporting cavity 13, a controller 5 and a touch display screen 6 are fixedly arranged on the outer side of the lower cabinet door 8, and the mixing fan 17 and the touch display screen 6 are both electrically connected with the controller 5, controller 5 is through external switch and power electric connection, before the spraying, pours into fuel and coating powder into spiral blending bunker 16 in advance and carries out the spiral and mix, under the effect of spiral water conservancy diversion frame 21 and compounding fan 17, fuel can advance with the coating powder spiral, can make the two intensive mixing, and it is protruding effectively to have avoided the easy granule that appears in spraying back boiler surface, and the problem of spraying unevenness quality difference.
The top end of an oxygen storage tank 11 and the top end of an acetylene fuel storage tank 12 are respectively fixedly communicated with two ends of a three-way pipe 20, electromagnetic valves 14 are fixedly installed at the joint of the oxygen storage tank 11 and the three-way pipe 20 and the joint of the acetylene fuel storage tank 12 and the three-way pipe 20, the two electromagnetic valves 14 are electrically connected with a controller 5, a coating material inlet 22 is arranged at one side of the top end of a spiral mixing bunker 16 close to a combustion improver inlet 23, a spraying powder storage tank 4 is fixedly arranged at the top end of a spraying box body 1, the bottom end of the spraying powder storage tank 4 is fixedly communicated with the top end of the coating material inlet 22, an electromagnetic flow-limiting valve 18 is fixedly installed at the joint of the spraying powder storage tank 4 and the coating material inlet 22, the electromagnetic flow-limiting valve 18 is electrically connected with the controller 5, before spraying, fuel and coating powder are injected into the spiral mixing bunker 16 for spiral mixing, under the action of a spiral guide frame 21 and a mixing fan 17, the fuel can advance with the coating powder spiral, can make the two intensive mixing, has effectively avoided the easy granule arch that appears in spraying back boiler surface, and the spraying unevenness quality is poor problem.
The fixed intercommunication in one side that combustion improver import 23 was kept away from to spiral blending bunker 16 has the material passageway 15 that spouts that extends to spraying box 1 outside, one side of spouting material passageway 15 is equipped with spray tube 2, the one end fixed mounting that spraying box 1 was kept away from to spray tube 2 has spray gun 3, the fixed threaded connection head 25 that is provided with of one end of spray gun 3, threaded connection head 25 goes up threaded connection has thermal-insulated splashproof 24, can enough insulate against heat to the staff, can play certain guard action again, whole safe and reliable, practical value is high.
The outside of blending chamber 19 articulates there is last cabinet door 9, and the fixed surface of going up cabinet door 9 installs three barometer 10, and three barometer 10 is respectively through pipeline and oxygen storage tank 11, acetylene fuel storage tank 12 and the fixed intercommunication of spiral blending bunker 16, can be in the spraying process real-time supervision oxygen storage tank 11, acetylene fuel storage tank 12 and the inside atmospheric pressure change of spiral blending bunker 16, improves the security that spraying device used.
Four corners of spraying 1 bottom of box are all fixed and are provided with universal wheel 7, remove to use convenient more fast.
When the embodiment of the application is used: directly pushing the spraying box body 1 to be close to a boiler, taking down the spraying gun 3, connecting a heat-insulating splash guard 24 at a muzzle of the spraying gun 3 in a threaded manner, then setting the flow velocity of an electromagnetic flow-limiting valve 18 through a touch display screen 6, then switching on two electromagnetic valves 14, at the moment, oxygen and acetylene fuel can enter a spiral mixing bin 16 from an oxygen storage tank 11 and an acetylene fuel storage tank 12 through a three-way pipe 20 under the drive of a mixing fan 17 respectively, before spraying, injecting the fuel and coating powder into the spiral mixing bin 16 in advance for spiral mixing, under the action of a spiral guide frame 21 and the mixing fan 17, the fuel and the coating powder can spirally advance to be fully mixed, mixed air flow enters a spraying pipe 2 through a spraying channel 15 and is sprayed out by the spraying gun 3, and a worker only needs to hold the spraying gun 3 to uniformly spray the surface of the boiler according to a normal spraying flow, effectively avoided spraying back boiler surface to appear the granule arch easily, the poor problem of spraying unevenness quality, coating can be regulated and control in a flexible way according to the condition of spraying, and operation convenient to use is quick, is equipped with the thermal-insulated splashproof of detachable 24 in the exit of spray gun 3, can enough insulate against heat to the staff, can play certain guard action again, whole safe and reliable, practical value is high.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a subsonic spraying device for resistant erosive wear of boiler of thermal power plant, includes spraying box (1), its characterized in that: a mixing cavity (19) and a combustion-supporting cavity (13) are sequentially arranged in the spraying box body (1) from top to bottom, an oxygen storage tank (11) and an acetylene fuel storage tank (12) are arranged at the bottom of the inner wall of the combustion-supporting cavity (13), a spiral mixing bin (16) and a mixing fan (17) are arranged at the bottom of the inner wall of the mixing cavity (19), a spiral flow guide frame (21) is fixedly arranged inside the spiral mixing bin (16), one side of the spiral mixing bin (16) is fixedly communicated with a combustion improver inlet (23), one end of the combustion improver inlet (23) is fixedly communicated with an air outlet of the mixing fan (17), an air outlet of the mixing fan (17) is fixedly communicated with a three-way pipe (20), the front of combustion-supporting chamber (13) is articulated to have lower cabinet door (8), the outside fixed mounting of lower cabinet door (8) has controller (5) and touch-control display screen (6).
2. The subsonic spraying device for the erosion wear resistance of a boiler of a thermal power plant according to claim 1, characterized in that: the top end of the oxygen storage tank (11) and the top end of the acetylene fuel storage tank (12) are respectively fixedly communicated with two ends of the three-way pipe (20), electromagnetic valves (14) are fixedly installed at the joint of the oxygen storage tank (11) and the three-way pipe (20) and the joint of the acetylene fuel storage tank (12) and the three-way pipe (20), and the two electromagnetic valves (14) are electrically connected with the controller (5).
3. The subsonic spraying device for the erosion wear resistance of a boiler of a thermal power plant according to claim 1, characterized in that: one side that spiral blending bunker (16) top is close to combustion-supporting agent import (23) is equipped with coating and advances notes mouth (22), the fixed spraying powder storage tank (4) that is provided with in top of spraying box (1), the bottom of spraying powder storage tank (4) and the fixed intercommunication in top of coating advances notes mouth (22), the department of connection fixed mounting that spraying powder storage tank (4) and coating advance notes mouth (22) has electromagnetism restriction valve (18), electromagnetism restriction valve (18) and controller (5) electric connection.
4. The subsonic spraying device for the erosion wear resistance of a boiler of a thermal power plant according to claim 1, characterized in that: the fixed intercommunication in one side that combustion improver import (23) was kept away from in spiral blending bunker (16) has the material passageway (15) of spouting that extends to spraying box (1) outside, the one side of spouting material passageway (15) is equipped with spray tube (2), the one end fixed mounting that spraying box (1) was kept away from in spray tube (2) has spray gun (3), the fixed threaded connection head (25) that is provided with of one end of spray gun (3), threaded connection has thermal-insulated splashproof (24) on threaded connection head (25).
5. The subsonic spraying device for the erosion wear resistance of a boiler of a thermal power plant according to claim 4, characterized in that: the outer side of the mixing cavity (19) is hinged with an upper cabinet door (9), the surface of the upper cabinet door (9) is fixedly provided with three barometers (10), and the three barometers (10) are fixedly communicated with an oxygen storage tank (11), an acetylene fuel storage tank (12) and a spiral mixing bin (16) through pipelines respectively.
6. The subsonic spraying device for the erosion wear resistance of a boiler of a thermal power plant according to claim 1, characterized in that: four corners of the bottom of the spraying box body (1) are fixedly provided with universal wheels (7).
7. The subsonic spraying device for the erosion wear resistance of a boiler of a thermal power plant according to claim 1, characterized in that: the material mixing fan (17) and the touch display screen (6) are both electrically connected with the controller (5), and the controller (5) is electrically connected with the power supply through an external switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122389827.4U CN215784214U (en) | 2021-09-30 | 2021-09-30 | Subsonic spraying device for resisting erosive wear of boiler of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122389827.4U CN215784214U (en) | 2021-09-30 | 2021-09-30 | Subsonic spraying device for resisting erosive wear of boiler of thermal power plant |
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| Publication Number | Publication Date |
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| CN215784214U true CN215784214U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122389827.4U Active CN215784214U (en) | 2021-09-30 | 2021-09-30 | Subsonic spraying device for resisting erosive wear of boiler of thermal power plant |
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| CN (1) | CN215784214U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115976450A (en) * | 2023-03-14 | 2023-04-18 | 淄博市产品质量检验研究院 | Automatic spraying device for metal surface coating |
-
2021
- 2021-09-30 CN CN202122389827.4U patent/CN215784214U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115976450A (en) * | 2023-03-14 | 2023-04-18 | 淄博市产品质量检验研究院 | Automatic spraying device for metal surface coating |
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