Soot blower for horizontal flue of boiler

Abstract

The utility model discloses a soot blower for a horizontal flue of a boiler, and relates to the technical field of soot blowing of boilers. The multiple auxiliary gas branch pipes are fixed to the top of the auxiliary gas main pipe and communicate with the auxiliary gas main pipe; the circumferential blowing device can be inserted into a top opening of the auxiliary gas branch pipe in an up-down sliding manner; the sealing assembly is detachably fixed to the top opening of the auxiliary gas branch pipe and connected to the outer side of the circumferential blowing device in a sleeving mode; the fan is mounted in the auxiliary gas branch pipe and drives the circumferential blowing device to rotate under the driving of wind power; the limiting device is fixed at the bottom of the fan; the supporting device is fixed in the auxiliary gas branch pipe; according to the utility model, the circumferential blowing device rotates to continuously blow soot in the circumferential direction of the soot blowing device, and through continuous blowing, flue gas disturbance is improved to take away fly ash, so that the fly ash is prevented from being accumulated in a large quantity.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler soot blowing, in particular to a boiler horizontal flue soot blowing device. Background Art

[0002] When the pulverized coal boiler is in operation, the raw coal is ground into pulverized coal through the pulverized coal pipeline and transported to the pulverized coal burner. When the pulverized coal leaves the burner, it burns in the furnace. Under the action of the induced draft fan, the flue gas is discharged into the atmosphere from the furnace - horizontal flue at the flame angle - rear heating surface - desulfurization system - preheater - dust collector - low-temperature economizer - desulfurization system - chimney. As the boiler continues to run, the grinding efficiency of the pulverizer grinding parts decreases, the burner wears and burns, and the burner performance decreases. In addition, there is a shortage of coal, and the coal combustion of the boiler unit is complex and changeable, which often deviates greatly from the designed coal type, resulting in incomplete combustion of pulverized coal and increased dust content in the flue gas. Ash accumulation is very likely to occur in the horizontal flue at the flame angle of the boiler, the horizontal flue at the denitrification inlet, and the outlet of the low-temperature economizer.

[0003] When the soot blowing is finished, there will still be a certain amount of dust in the flue. At this time, after the soot blowing of the hood is finished, the floating smoke and dust will enter the inside of the hood through the air outlet of the hood, thereby blocking the hood and causing the hood to fail to blow normally during the next soot blowing.

[0004] Therefore, it is necessary to invent a boiler horizontal flue soot blowing device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a sootblowing device for a horizontal flue of a boiler, so as to solve the problem proposed in the above-mentioned background technology that after the sootblowing is completed, there will still be a certain amount of dust in the flue. At this time, after the sootblowing device finishes sootblowing, the floating smoke will enter the interior of the sootblowing device through the air outlet of the sootblowing device, thereby blocking the sootblowing device, causing the sootblowing device to fail to blow normally during the next sootblowing.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a boiler horizontal flue soot blowing device, comprising:

[0007] Auxiliary gas main pipe;

[0008] Auxiliary gas branch pipes, a plurality of which are provided and fixed on the top of the auxiliary gas main pipe and connected to the auxiliary gas main pipe;

[0009] A circumferential blowing device, which can be inserted into the top opening of the auxiliary air branch pipe by sliding up and down;

[0010] A sealing assembly, which is detachably fixed at the top opening of the auxiliary air branch pipe and sleeved on the outer side of the circumferential blowing device;

[0011] A fan, which is installed inside the auxiliary air branch pipe and drives the circumferential air blowing device to rotate under the drive of wind;

[0012] A limiting device, wherein the limiting device is fixed to the bottom of the fan;

[0013] The supporting device is fixed inside the auxiliary gas branch pipe and sleeved on the outside of the limiting device.

[0014] Optionally, the circumferential blowing device includes:

[0015] An air outlet device, the air outlet device can slide up and down through the sealing assembly;

[0016] A polygonal column, which is fixed to the air outlet device and extends downward to the lower part of the supporting device;

[0017] A limiting plate, wherein the limiting plate is fixed to the bottom of the polygonal column;

[0018] A tension spring is sleeved on the outside of the polygonal column, and two ends of the tension spring are respectively fixedly connected to the air outlet device and the fan.

[0019] Optionally, the air outlet device includes:

[0020] A lifting ring, the lifting ring being slidable up and down through the sealing assembly;

[0021] A blowing through hole, wherein a plurality of the blowing through holes are provided and are arranged in a circular array on the upper part of the lifting ring;

[0022] A top plate is fixed on the top of the lifting ring and is fixedly connected to the polygonal column and the tension spring.

[0023] Optionally, the sealing assembly includes:

[0024] A snap-fit ​​sleeve, which is detachably fixed at the top opening of the auxiliary gas branch pipe;

[0025] The sealing rings are provided with two sealing rings, which are respectively bonded to the inner surface and the outer surface of the clamping sleeve and are in contact with the lifting ring and the auxiliary gas branch pipe.

[0026] Optionally, a polygonal through hole penetrating from top to bottom is opened in the middle of the fan, and the polygonal through hole is adapted to the polygonal column.

[0027] Optionally, the limiting device includes:

[0028] A hanging column, wherein the hanging column is fixed to the bottom of the fan;

[0029] A rotating disk fixed to the bottom of the sling and inserted into the top of the supporting device;

[0030] The balls are provided in plurality and evenly distributed in a ring array and rotatably mounted on the outer side of the rotating disk.

[0031] Optionally, the supporting device comprises:

[0032] A frame plate, which is fixed inside the auxiliary gas branch pipe and contacts the raised limit plate;

[0033] A sleeve, which is sleeved on the outer side of the rotating disk and contacts the ball bearing;

[0034] A lower pressure ring is detachably fixed at the top opening of the sleeve and contacts the ball.

[0035] Technical effects and advantages of the utility model:

[0036] 1. The utility model continuously blows soot in the circumferential direction of the soot blowing device through the rotation of the circumferential air blowing device. Through continuous blowing, the smoke disturbance is increased to take away the fly ash, thereby preventing a large amount of fly ash from accumulating.

[0037] 2. The utility model uses the tension of the tension spring to pull the lifting ring down, so that after the soot blowing device finishes soot blowing, the sealing component will block the air blowing hole to prevent the drifting smoke and dust from entering the soot blowing device through the air outlet of the soot blowing device, thereby blocking the soot blowing device. At the same time, the tension of the tension spring blocks the pressure inside the auxiliary air branch pipe to reach a certain height, and the lifting ring rises to open the air blowing hole, so that the wind can be blown out normally.

[0038] 3. The utility model can open the auxiliary gas main pipe, and the gas inside the auxiliary gas main pipe flows normally, and the internal pressure of the auxiliary gas branch pipe cannot be increased. The flow of gas is ensured without blowing, and the soot blowing device is prevented from being burned by excessive temperature inside the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0040] Figure 2 This is a schematic diagram of the internal structure of the auxiliary gas branch pipe of the utility model;

[0041] Figure 3 This is a schematic diagram of the structure of the limit device of the utility model;

[0042] Figure 4 This is a schematic diagram of the polygonal through hole structure of the utility model;

[0043] Figure 5 This is a schematic diagram of the structure of the circumferential blowing device of the utility model.

[0044] In the figure: 100, auxiliary gas main pipe;

[0045] 200, auxiliary gas branch;

[0046] 300, circumferential air blowing device; 310, air outlet device; 311, lifting ring; 312, air blowing hole; 313, top plate; 320, polygonal column; 330, limit plate; 340, tension spring;

[0047] 400, sealing assembly; 410, snap-fit ​​sleeve; 420, sealing ring;

[0048] 500, fan; 510, polygonal through hole;

[0049] 600, limit device; 610, hanging column; 620, rotating plate; 630, ball bearing;

[0050] 700, supporting device; 710, frame plate; 720, sleeve; 730, lower pressure ring. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0052] The utility model provides Figure 1-5 A boiler horizontal flue soot blowing device is shown, comprising:

[0053] Auxiliary gas main pipe 100;

[0054] Auxiliary gas branch pipes 200, a plurality of auxiliary gas branch pipes 200 are provided and fixed on the top of the auxiliary gas main pipe 100, and communicated with the auxiliary gas main pipe 100;

[0055] A circumferential blowing device 300, which can be slidably inserted into the top opening of the auxiliary air branch pipe 200;

[0056] A sealing assembly 400, which is detachably fixed at the top opening of the auxiliary air branch pipe 200 and sleeved on the outer side of the circumferential blowing device 300;

[0057] The fan 500 is installed inside the auxiliary air branch pipe 200 and drives the circumferential air blowing device 300 to rotate under the driving force of wind;

[0058] A limiting device 600, the limiting device 600 is fixed to the bottom of the fan 500;

[0059] The supporting device 700 is fixed inside the auxiliary gas branch pipe 200 and sleeved on the outside of the limiting device 600.

[0060] The circumferential blowing device 300 is rotated to continuously blow soot in the circumference of the soot blowing device, and the smoke disturbance is increased through continuous blowing to remove the fly ash, thereby preventing a large amount of fly ash from accumulating;

[0061] The valve at the upper end of the auxiliary gas main pipe 100 can be opened, and the gas inside the auxiliary gas main pipe 100 flows normally, and the pressure inside the auxiliary gas branch pipe 200 cannot be increased, so that the flow of gas is ensured without blowing, and the soot blowing device is prevented from being burned by excessively high temperature inside the furnace;

[0062] The fan 500 is arranged to drive the fan 500 to rotate when the gas flows in the auxiliary gas branch pipe 200, so that the fan 500 drives the circumferential blowing device 300 to rotate.

[0063] In some embodiments of the present invention, the circumferential blowing device 300 includes:

[0064] The air outlet device 310 can slide up and down through the sealing assembly 400;

[0065] A polygonal column 320, which is fixed on the air outlet device 310 and extends downward to the lower part of the supporting device 700;

[0066] A limiting plate 330, the limiting plate 330 is fixed to the bottom of the polygonal column 320;

[0067] The tension spring 340 is sleeved on the outside of the polygonal column 320, and the two ends of the tension spring 340 are respectively fixedly connected to the air outlet device 310 and the fan 500.

[0068] The polygonal column 320 and the limiting plate 330 guide the lifting and lowering of the air outlet device 310 and limit the lifting and lowering height of the air outlet device 310 to prevent the air outlet device 310 from being separated from the auxiliary air branch pipe 200 under the action of pressure.

[0069] In some embodiments of the present invention, the air outlet device 310 includes:

[0070] A lifting ring 311, the lifting ring 311 can slide up and down through the sealing assembly 400;

[0071] A plurality of air blowing holes 312 are provided and are arranged in a circular array on the upper portion of the lifting ring 311;

[0072] The top plate 313 is fixed on the top of the lifting ring 311 and is fixedly connected to the polygonal column 320 and the tension spring 340 .

[0073] The lifting ring 311 is pulled down by the tension of the tension spring 340, so that after the soot blowing device is finished, the sealing component 400 blocks the blowing hole 312 to prevent the floating smoke from entering the soot blowing device through the air outlet of the soot blowing device, thereby blocking the soot blowing device. At the same time, the lifting ring 311 rises after the pressure inside the auxiliary air branch pipe 200 reaches a certain height due to the tension of the tension spring 340, and the blowing hole 312 is opened, so that the wind can be blown out normally.

[0074] The top plate 313 is provided to ensure the normal installation and use of the polygonal column 320 and the tension spring 340 , and the tension spring 340 drives the lifting ring 311 to adjust normally.

[0075] In some embodiments of the present invention, the sealing assembly 400 includes:

[0076] A clamping sleeve 410, which is detachably fixed at the top opening of the auxiliary gas branch pipe 200;

[0077] The sealing ring 420 is provided with two sealing rings 420 , and is respectively bonded to the inner surface and the outer surface of the clamping sleeve 410 , and is in contact with the lifting ring 311 and the auxiliary gas branch pipe 200 .

[0078] The provision of the clamping sleeve 410 and the sealing ring 420 can ensure the sealing between the lifting ring 311 and the auxiliary gas branch pipe 200, thereby preventing gas from leaking through the lifting ring 311 and the auxiliary gas branch pipe 200.

[0079] In some embodiments of the present invention, a polygonal through hole 510 penetrating from top to bottom is opened in the middle of the fan 500 , and the polygonal through hole 510 is matched with the polygonal column 320 .

[0080] Among them, the coordination of the polygonal through hole 510 and the polygonal column 320 enables the fan 500 to drive the top plate 313 to rotate when rotating, so that the top plate 313 can drive the lifting ring 311 to rotate synchronously without affecting the lifting of the lifting ring 311.

[0081] In some embodiments of the present invention, the limiting device 600 includes:

[0082] A hanging column 610, the hanging column 610 is fixed to the bottom of the fan 500;

[0083] A rotating disk 620, which is fixed to the bottom of the suspension column 610 and inserted into the top of the supporting device 700;

[0084] The balls 630 are provided in plurality and are evenly distributed in a ring array and rotatably mounted on the outer side of the rotating disk 620 .

[0085] The suspending column 610 and the rotating disk 620 are inserted into the interior of the supporting device 700 to limit the height of the fan 500, thereby preventing the fan 500 from rising and falling during use.

[0086] The arrangement of the ball bearings 630 reduces the friction of the rotating disk 620 during rotation, thereby preventing the rotating disk 620 from affecting the normal rotation of the fan 500 due to the friction.

[0087] In some embodiments of the present invention, the supporting device 700 includes:

[0088] A frame plate 710, the frame plate 710 is fixed inside the auxiliary gas branch pipe 200 and contacts the raised limit plate 330;

[0089] A sleeve 720, which is sleeved on the outer side of the rotating disk 620 and contacts the ball bearing 630;

[0090] The lower pressing ring 730 is detachably fixed at the top opening of the sleeve 720 and contacts the ball 630 .

[0091] The frame plate 710 is provided to limit the positions of the sleeve 720 and the lower pressure ring 730 and ensure the stability of the sleeve 720;

[0092] The sleeve 720 and the lower pressure ring 730 ensure the normal insertion of the rotating disk 620 and limit the height of the rotating disk 620 to ensure that the height of the rotating disk 620 does not change.

[0093] Working method of the utility model:

[0094] When in use, the air pump is started to fill the auxiliary air main pipe 100 and the auxiliary air branch pipe 200 with gas. As the gas is filled into the auxiliary air branch pipe 200, the pressure inside will increase, so that the lifting ring 311 and the top plate 313 rise under the action of the pressure, and drive the blowing hole 312 to separate from the sealing component 400, and drive the polygonal column 320 to rise, and stretch the tension spring 340, so that the polygonal column 320 drives the limit plate 330 to contact the frame plate 710 to limit the rise of the top plate 313;

[0095] After the air blowing hole 312 is opened, the gas will be discharged to blow the soot, and the gas inside the auxiliary air branch pipe 200 will flow, and when flowing, the fan 500 will be driven to rotate (the blades of the fan 500 are the same as the blades of a wind turbine or a windmill, and can rotate normally when the airflow passes through), and the fan 500 will be driven to rotate the top plate 313 and the lifting ring 311 through the polygonal column 320;

[0096] Open the valve at the end of the auxiliary gas main pipe 100 away from the air pump, the gas inside the auxiliary gas main pipe 100 will be discharged, the pressure inside the sleeve 720 will decrease, the tension spring 340 will drive the top plate 313 and the lifting ring 311 to descend, and the sealing ring 420 will block the blowing hole 312.

[0097] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0098] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A boiler horizontal flue sootblowing device, characterized in that: include: Auxiliary gas main pipe (100); Auxiliary gas branch pipes (200), a plurality of which are provided and fixed on the top of the auxiliary gas main pipe (100) and communicated with the auxiliary gas main pipe (100); A circumferential air blowing device (300), wherein the circumferential air blowing device (300) can be inserted into the top opening of the auxiliary air branch pipe (200) by sliding up and down; A sealing assembly (400), wherein the sealing assembly (400) is detachably fixed at the top opening of the auxiliary air branch pipe (200) and sleeved on the outside of the circumferential air blowing device (300); A fan (500), wherein the fan (500) is installed inside the auxiliary air branch pipe (200) and drives the circumferential air blowing device (300) to rotate under the drive of wind; A limiting device (600), wherein the limiting device (600) is fixed to the bottom of the fan (500); A supporting device (700), wherein the supporting device (700) is fixed inside the auxiliary gas branch pipe (200) and sleeved on the outside of the limiting device (600).

2. The boiler horizontal flue sootblowing device according to claim 1, characterized in that: The circumferential blowing device (300) comprises: An air outlet device (310), wherein the air outlet device (310) can slide up and down and pass through the sealing assembly (400); A polygonal column (320), wherein the polygonal column (320) is fixed on the air outlet device (310) and extends downward to the lower part of the support device (700); A limiting plate (330), wherein the limiting plate (330) is fixed to the bottom of the polygonal column (320); A tension spring (340) is sleeved on the outside of the polygonal column (320), and two ends of the tension spring are respectively fixedly connected to the air outlet device (310) and the fan (500).

3. The boiler horizontal flue sootblowing device according to claim 2, characterized in that: The air outlet device (310) comprises: A lifting ring (311), the lifting ring (311) being able to slide up and down and pass through the sealing assembly (400); A blowing through hole (312), wherein a plurality of the blowing through holes (312) are provided and are opened in an annular array on the upper part of the lifting ring (311); A top plate (313) is fixed to the top of the lifting ring (311) and is fixedly connected to the polygonal column (320) and the tension spring (340).

4. The boiler horizontal flue sootblowing device according to claim 3 is characterized in that: The sealing assembly (400) comprises: A snap-fit ​​sleeve (410), the snap-fit ​​sleeve (410) being detachably fixed at a top opening of the auxiliary gas branch pipe (200); The sealing rings (420) are provided in two numbers and are respectively bonded to the inner surface and the outer surface of the clamping sleeve (410), and are in contact with the lifting ring (311) and the auxiliary gas branch pipe (200).

5. The boiler horizontal flue sootblowing device according to claim 1, characterized in that: A polygonal through hole (510) is provided in the middle of the fan (500) and passes through from top to bottom, and the polygonal through hole (510) is compatible with the polygonal column (320).

6. The boiler horizontal flue sootblowing device according to claim 2, characterized in that: The limiting device (600) comprises: A hanging column (610), wherein the hanging column (610) is fixed to the bottom of the fan (500); A rotating disk (620), the rotating disk (620) being fixed to the bottom of the suspension column (610) and inserted into the top of the supporting device (700); A plurality of rolling balls (630) are provided and evenly distributed in an annular array and rotatably mounted on the outer side of the rotating disk (620).

7. The boiler horizontal flue sootblowing device according to claim 1, characterized in that: The supporting device (700) comprises: a frame plate (710), wherein the frame plate (710) is fixed inside the auxiliary gas branch pipe (200) and is in contact with the raised limit plate (330); A sleeve (720), wherein the sleeve (720) is sleeved on the outside of the rotating disk (620) and is in contact with the ball bearing (630); A lower pressure ring (730) is detachably fixed at the top opening of the sleeve (720) and is in contact with the ball bearing (630).

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