CN115382857B

CN115382857B - Ash removal device

Info

Publication number: CN115382857B
Application number: CN202211030189.XA
Authority: CN
Inventors: 周岩; 张礼; 李锡华; 刘健; 王江涛; 张志鹏
Original assignee: Beijing Aerospace Maiwei Technology Co ltd
Current assignee: Beijing Aerospace Maiwei Technology Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-09-08
Anticipated expiration: 2042-08-26
Also published as: CN115382857A

Abstract

The invention provides an ash removal device, comprising: the inner shell, the supporting part, the stationary ring and the movable ring; the inner shell is provided with a first air inlet and a first air outlet, and the supporting part is fixedly arranged in the inner shell; the static ring comprises an air inlet section and an air outlet section, the air inlet section is a hollow cylinder body, a first air inlet through hole is formed in the outer wall of the air inlet section, the air inlet section is arranged in the first air outlet in a penetrating mode, two ends of the air inlet section are fixedly connected with the supporting part and the air outlet section respectively, and the air outlet section is provided with an air outlet through hole which can be communicated with an inner cavity of the air inlet section; the movable ring is a hollow cylinder body, a second air inlet through hole is formed in the outer wall of the movable ring, the movable ring is located in the inner shell and is rotatably connected to the supporting component, the movable ring is sleeved on the air inlet section, a first electromagnetic coil is arranged on the stationary ring, and a second electromagnetic coil is arranged on the movable ring. The dust removing device can ensure the dust removing effect on the premise of reducing the scouring force to the surface of the equipment, is high in safety, and can avoid damage to the surface of the equipment.

Description

Ash removal device

Technical Field

The invention relates to the technical field of equipment ash removal, in particular to an ash removal device.

Background

In industrial production, a large amount of dust is often accumulated on the surface of the equipment, which can have a serious influence on the working efficiency of the equipment, for example, the accumulated dust on the heating surface inside the boiler can seriously reduce the heat conduction effect of the heating surface, so that the surface of the equipment needs to be frequently subjected to dust removal.

Common ash removal modes are gas pulse ash removal, air shock wave ash removal and steam ash removal. The gas pulse ash removal is to mix air and combustible gas in a proper proportion in a special container, and to perform ash removal by impacting and flushing a heat exchange surface by shock waves generated by deflagration after ignition. The air shock wave ash removal is to lead compressed air with a certain pressure into a shock wave generator, start the shock wave generator after the pressure reaches a certain preset value, and enable high-pressure gas to instantaneously contact with low-pressure gas in a boiler to generate shock waves, wherein the shock waves enter the boiler through a nozzle pipe, and the generated vibration enables ash and scale on a heating surface of the boiler to fall off. The steam soot blowing is to remove coking and soot deposition on a heating surface by utilizing jet impact force of high-pressure steam. The acoustic wave ash remover converts compressed air into high-power acoustic waves to be sent into a boiler, the acoustic waves and accumulated ash on a heat exchange surface generate resonance, and the accumulated ash falls off under vibration to realize an ash removing function. The gas flows generated by the gas pulse ash removal, the air shock wave ash removal and the steam ash removal are all the effects of scouring the surfaces of equipment to achieve ash removal, and the stronger the ash removal function is, the more serious the scouring of the surfaces of the equipment is. And the gas pulse ash removal and the air shock wave ash removal are both provided with high-pressure storage tanks, so that potential safety hazards exist.

Disclosure of Invention

The invention aims to provide an ash removing device which can ensure the ash removing effect on the premise of reducing the scouring force on the surface of equipment, has high safety and can avoid damaging the surface of the equipment.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

an ash removal apparatus comprising: the inner shell, the supporting part, the stationary ring and the movable ring;

the inner housing has a first gas inlet allowing external gas to enter the inside of the inner housing and a first gas outlet for discharging gas from the inside of the inner housing, the support member being fixedly provided inside the inner housing;

the static ring comprises an air inlet section and an air outlet section, the air inlet section is a hollow cylinder, a first air inlet through hole is formed in the outer wall of the air inlet section, the air outlet section is positioned outside the inner shell and corresponds to the first air outlet, the air inlet section is arranged in the first air outlet in a penetrating mode, two ends of the air inlet section are fixedly connected with the supporting component and the air outlet section respectively, and the air outlet section is provided with an air outlet through hole capable of being communicated with an inner cavity of the air inlet section;

the movable ring is a hollow cylinder body, a second air inlet through hole is formed in the outer wall of the movable ring, the movable ring is located in the inner shell and is rotatably connected to the supporting component, the movable ring is sleeved on the air inlet section, the axes of the movable ring and the movable ring are coincident, a first electromagnetic coil is arranged on the stationary ring, the movable ring is provided with a second electromagnetic coil, the first electromagnetic coil is electrically connected with an external power supply through a frequency modulation device, so that when the external power supply supplies power to the first electromagnetic coil, the movable ring can be driven to rotate through electromagnetic force, and gas entering the inner shell can sequentially pass through the second air inlet through hole and the first air inlet through hole, and after the gas containing sound waves is formed under the shearing action of the second air inlet through hole and the first air inlet through hole, the gas is discharged out of the inner shell through the air outlet through the air inlet through the air outlet through the shearing action of the first air inlet through hole.

Preferably, the filter device is further included;

the filtering device is a cylinder and is detachably connected to the supporting component, the filtering device is sleeved on the movable ring, the axis of the filtering device is coincident with the axis of the movable ring, so that gas entering the inner shell can flow through the filtering device, and after being filtered by the filtering device, the gas enters the inner cavity of the movable ring through the second air inlet through hole.

Preferably, the number of the first air inlet through holes is at least two, and the at least two first air inlet through holes are uniformly distributed along the circumferential direction of the air inlet section;

and/or the number of the second air inlet through holes is at least two, and the at least two second air inlet through holes are uniformly distributed along the circumferential direction of the movable ring.

Preferably, the device further comprises a first flow guiding component;

the first flow guiding component is positioned in the air inlet section and fixedly connected to the supporting component, the first flow guiding component is conical in shape gradually reducing towards the direction away from the supporting component, and the axis of the conical shape is coincident with the axis of the air inlet section.

Preferably, the first connecting ring is further included;

the first connecting ring is sleeved on the outer wall of the supporting component and fixedly connected to the inner wall of the inner shell, so that the first connecting ring and the supporting component jointly divide the interior of the inner shell into a first space corresponding to the first air inlet and a second space corresponding to the first air outlet, and the movable ring is positioned in the second space;

the first connecting ring is provided with a first channel, and the first space is communicated with the second space through the first channel.

Preferably, the first connecting ring is annular, the number of the first channels is at least two, and at least two first channels are uniformly distributed along the circumferential direction of the first connecting ring.

Preferably, the device further comprises a second flow guiding component;

the second flow guiding component is positioned in the first space and fixedly connected to the supporting component, the second flow guiding component is conical in shape tapering towards the direction away from the supporting component, and the axis of the conical shape is coincident with the axis of the first connecting ring.

Preferably, the device further comprises an outer shell;

the outer shell is provided with a second air inlet and a second air outlet, the inner shell is fixedly arranged in the outer shell, a second channel with two ends respectively connected with the second air inlet and the second air outlet is formed between the outer wall of the inner shell and the inner wall of the outer shell, and external air can enter the second channel through the second air inlet and is discharged through the second air outlet;

the stationary ring is located inside the outer case, and the exhaust through hole on the exhaust section corresponds to the second exhaust port, so that the sound wave-containing gas exhausted from the exhaust through hole can be exhausted to the outside of the outer case through the second exhaust port.

Preferably, the device further comprises a second connecting ring;

the second connecting ring is sleeved on the outer wall of the support inner shell and fixedly connected to the inner wall of the outer shell, and the second channel is arranged on the second connecting ring.

Preferably, the second connecting ring is annular, the number of the second channels is at least two, and at least two second channels are uniformly distributed along the circumferential direction of the second connecting ring.

According to the ash removing device, the gas entering the inner shell can sequentially pass through the second air inlet through hole and the first air inlet through hole, and the gas containing sound waves is discharged to the inner shell through the air outlet through hole after being formed under the shearing action of the second air inlet through hole and the first air inlet through hole, so that the ash removing effect can be ensured on the premise of reducing the scouring force on the surface of equipment, the safety is high, and meanwhile, the damage to the surface of the equipment can be avoided.

Drawings

FIG. 1 is a schematic view of an embodiment of an ash handling apparatus according to the present invention;

FIG. 2 is a schematic view of the stationary ring of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of the ring of FIG. 1;

FIG. 5 is a schematic view of the filtration device of FIG. 1;

FIG. 6 is a schematic view of section A-A of FIG. 1.

In the figure: 1-an inner housing; 2-a support member; 3-stationary ring; 4-moving ring; 5-a first air inlet; 6-a first exhaust port; 7-an air inlet section; 8-an exhaust section; 9-a first air inlet through hole; 10-exhaust through holes; 11-a second air inlet through hole; 12-a filtration device; 13-filtration pores; 14-a first flow directing member; 15-a first space; 16-a second space; 17-a first channel; 18-a first connection ring; 19-a second flow directing member; 20-an outer shell; 21-a second air inlet; 22-a second exhaust port; 23-a second channel; 24-a second connection ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following describes the ash removal device of the present invention in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1, 2, 3, 4, an ash removal device comprises: an inner housing 1, a support member 2, a stationary ring 3 and a movable ring 4. The inner housing 1 has a first gas inlet 5 allowing external gas to enter the inside of the inner housing 1 and a first gas outlet 6 for discharging gas from the inside of the inner housing 1, and the support member 2 is fixedly provided inside the inner housing 1. The stationary ring 3 comprises an air inlet section 7 and an air outlet section 8, the air inlet section 7 is a hollow cylinder body, a first air inlet through hole 9 is formed in the outer wall of the air inlet section 7, the air outlet section 8 is located at a position, corresponding to the first air outlet 6, outside the inner shell 1, of the air inlet section 7, the air inlet section 7 is arranged in the first air outlet 6 in a penetrating mode, two ends of the air inlet section 7 are fixedly connected with the supporting part 2 and the air outlet section 8 respectively, and an air outlet through hole 10 which can be communicated with an inner cavity of the air inlet section 7 is formed in the air outlet section 8. In actual manufacturing, the exhaust section 8 and the intake section 7 may be integrally formed. The moving ring 4 is a hollow cylinder, a second air inlet through hole 11 is formed in the outer wall, the moving ring 4 is located in the inner shell 1 and is rotatably connected to the supporting component 2, the moving ring 4 is sleeved on the air inlet section 7, the axes of the two are coincident, a first electromagnetic coil (not shown) is arranged on the stationary ring 3, a second electromagnetic coil (not shown) is arranged on the moving ring 4, the first electromagnetic coil is electrically connected with an external power supply through a frequency modulation device (not shown), so that when the external power supply supplies power to the first electromagnetic coil, the moving ring 4 can be driven to rotate through the action of electromagnetic force, and air entering the inner shell 1 can sequentially pass through the second air inlet through hole 11 and the first air inlet through hole 9, and after the air containing sound waves is formed under the shearing action of the second air inlet through hole 11 and the first air inlet through hole 9, the air is discharged out of the inner shell 1 through an air outlet through the air outlet through hole 10.

In actual use, only need aim at target equipment with exhaust through-hole 10, make the gas that contains the sound wave that discharges in the exhaust through-hole 10 carry out the ash removal to target equipment, and then realized carrying out the purpose of ash removal to target equipment through the sound wave, compared with prior art, need not set up high-pressure storage tank, that is to say the gas that contains the sound wave that discharges from exhaust through-hole 10 need not form great impact force to equipment surface just can guarantee the ash removal effect, not only the security is high, can also avoid causing the damage to equipment surface simultaneously. The rotation principle of the moving ring 4 is the same as that of the motor rotor, and since the first electromagnetic coil is electrically connected with an external power supply through a frequency modulation device (not shown), the power supply current of the external power supply to the first electromagnetic coil can be adjusted through the frequency modulation device during actual use, the rotation speed of the moving ring 4 is adjusted, and then the frequency of sound waves is adjusted.

In actual manufacture, as shown in fig. 2 and 3, the number of the first air inlet through holes 9 is at least two, and at least two first air inlet through holes 9 are uniformly distributed along the circumferential direction of the air inlet section 7. And/or, as shown in fig. 4, the number of the second air intake through holes 11 is at least two, and at least two second air intake through holes 11 are uniformly arranged along the circumferential direction of the moving ring 4. The first air intake through hole 9 and the second air intake through hole 11 may be long holes, but are not limited thereto, and may be any shape capable of achieving the object of the invention.

Further, as shown in fig. 1, the filter device 12 is further included; the filtering device 12 is a cylinder and is detachably connected to the supporting part 2, the filtering device 12 is sleeved on the movable ring 4, and the axis of the filtering device is coincident with the axis of the movable ring 4, so that the gas entering the inner shell 1 can flow through the filtering device 12, and after being filtered by the filtering device 12, the gas enters the inner cavity of the movable ring 4 through the second air inlet through hole 11. In this way, the gas can be prevented from passing through the first and second air intake through holes 9 and 11 in the presence of impurities, and thus the first and second air intake through holes 9 and 11 are prevented from being blocked. In actual production, as shown in fig. 5, a plurality of filter holes 13 are provided in the filter device 12, so that the filter device 12 filters gas through the filter holes 13.

Preferably, as shown in fig. 1, a first flow guiding member 14 is also included. The first flow guiding member 14 is located inside the air inlet section 7 and is fixedly connected to the support member 2, the first flow guiding member 14 has a conical shape tapering away from the support member 2, and the axis of the conical shape coincides with the axis of the air inlet section 7. In practical manufacturing, the axis of the exhaust through hole 10 may coincide with the axis of the air inlet section 7 as shown in the figure, so that the shape of the first flow guiding member 14 is tapered toward the direction away from the supporting member 2 means that the shape of the first flow guiding member 14 is tapered toward the exhaust through hole 10, so that the air containing sound waves in the air inlet section 7 can flow into the exhaust through hole 10 under the guiding action of the first flow guiding member 14.

As an alternative embodiment, as shown in fig. 1 and 6, a first connection ring 18 is further included. The first connecting ring 18 is sleeved on the outer wall of the supporting member 2 (which may be magnetic steel), and is fixedly connected to the inner wall of the inner housing 1, so that the first connecting ring 18 and the supporting member 2 jointly partition the interior of the inner housing 1 into a first space 15 corresponding to the first air inlet 5 and a second space 16 corresponding to the first air outlet 6, and the movable ring 4 is located in the second space 16. The first connecting ring 18 is provided with a first passage 17, and the first space 15 communicates with the second space 16 through the first passage 17. This ensures both the stability of the support member 2 in the inner housing 1 and the smooth flow of the gas in the inner housing 1. Specifically, the first connecting ring 18 may be formed integrally with the inner housing 1 by casting.

Specifically, the first connecting ring 18 is annular in shape, the number of the first passages 17 is at least two, and at least two first passages 17 are uniformly distributed along the circumferential direction of the first connecting ring 18. This ensures that the inlet gas can enter the second space 16 in multiple directions around the ring 4, thereby allowing the gas to uniformly pass through the second inlet holes 11 from multiple directions around the ring 4. Further, as shown in fig. 1, a second flow guiding member 19 is also included. The second flow guiding member 19 is located in the first space 15 and fixedly connected to the support member 2, the second flow guiding member 19 being shaped as a cone tapering away from the support member 2 and having an axis coinciding with the axis of the first connection ring 18. The gas thus introduced into the first space 15 can be introduced into the plurality of first passages 17 uniformly by the guiding action of the second guide member 19.

Example two

According to one embodiment, as shown in fig. 1, an outer housing 20 is further included. The outer case 20 has a second air inlet 21 and a second air outlet 22, the inner case 1 is fixedly provided within the outer case 20, and a second passage 23, both ends of which are respectively connected to the second air inlet 21 and the second air outlet 22, is formed between the outer wall of the inner case 1 and the inner wall of the outer case 20, and external air can enter the second passage 23 through the second air inlet 21 and be discharged through the second air outlet 22. The stationary ring 3 is located inside the outer case 20, and the exhaust through holes 10 on the exhaust section 8 correspond to the second exhaust ports 22, so that the sound wave-containing gas exhausted from the exhaust through holes 10 can be exhausted to the outside of the outer case 20 through the second exhaust ports 22. In this way, the pressure of the external air can be prevented from being higher than the pressure of the sound wave-containing gas discharged from the gas discharge through-hole 10, and the discharge of the sound wave-containing gas from the gas discharge through-hole 10 can be blocked. In actual use, the second exhaust port 22 may be aligned with the target device, and the sound wave-containing gas discharged from the exhaust through hole 10 can be discharged from the second exhaust port 22 and impact the surface of the target device to achieve the purpose of ash removal.

Further, as shown in fig. 1 and 6, a second connection ring 23 is also included. The second connecting ring 23 is sleeved on the outer wall of the inner support shell 1 and fixedly connected to the inner wall of the outer shell 20, and the second channel 23 is arranged on the second connecting ring 23. This enables a stable connection between the inner housing 1 and the outer housing 20 while also ensuring a smooth flow of gas between the outer wall of the inner housing 1 and the inner wall of the outer housing 20. In actual manufacture, the second connection ring 23 and the outer housing 20 and the inner housing 1 may be integrally formed by casting. Specifically, the second connecting ring 23 is annular, the number of the second passages 23 is at least two, and the at least two second passages 23 are uniformly distributed along the circumferential direction of the second connecting ring 23.

The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. An ash handling equipment, its characterized in that:

comprising the following steps: an inner shell (1), a supporting part (2), a stationary ring (3) and a movable ring (4);

the inner housing (1) has a first air inlet (5) for allowing external air to enter the inner housing (1) and a first air outlet (6) for discharging air from the inner housing (1), and the support member (2) is fixedly disposed within the inner housing (1);

the static ring (3) comprises an air inlet section (7) and an air outlet section (8), the air inlet section (7) is a hollow cylinder, a first air inlet through hole (9) is formed in the outer wall of the air inlet section, the air outlet section (8) is located at a position, outside the inner shell (1), corresponding to the first air outlet (6), the air inlet section (7) is arranged in the first air outlet (6) in a penetrating mode, two ends of the air inlet section (7) are fixedly connected with the supporting part (2) and the air outlet section (8) respectively, and an air outlet through hole (10) which can be communicated with an inner cavity of the air inlet section (7) is formed in the air outlet section (8);

the movable ring (4) is a hollow cylinder body, a second air inlet through hole (11) is formed in the outer wall of the movable ring (4) is located in the inner shell (1) and rotatably connected to the supporting component (2), the movable ring (4) is sleeved on the air inlet section (7), the axes of the two are coincident, a first electromagnetic coil is arranged on the stationary ring (3), a second electromagnetic coil is arranged on the movable ring (4), the first electromagnetic coil is electrically connected with an external power supply through a frequency modulation device, so that when the external power supply supplies power to the first electromagnetic coil, the movable ring (4) can be driven to rotate through the action of electromagnetic force, and gas entering the inner shell (1) can sequentially pass through the second air inlet through hole (11) and the first air inlet through hole (9), and after the second air inlet through hole (11) and the first air inlet through hole (9) form gas containing sound waves under the shearing action, the gas is discharged out of the inner shell (1) through the air outlet through hole (10).

2. The ash removal apparatus as defined in claim 1, wherein:

also comprises a filtering device (12);

the filtering device (12) is a cylinder and is detachably connected to the supporting component (2), the filtering device (12) is sleeved on the movable ring (4) and the axis is coincident with the axis of the movable ring (4), so that gas entering the inner shell (1) can flow through the filtering device (12), and the gas is filtered by the filtering device (12) and then enters the inner cavity of the movable ring (4) through the second air inlet through hole (11).

3. The ash removal apparatus as defined in claim 1, wherein:

the number of the first air inlet through holes (9) is at least two, and the at least two first air inlet through holes (9) are uniformly distributed along the circumferential direction of the air inlet section (7);

and/or the number of the second air inlet through holes (11) is at least two, and the at least two second air inlet through holes (11) are uniformly distributed along the circumferential direction of the movable ring (4).

4. The ash removal apparatus as defined in claim 1, wherein:

also comprises a first diversion component (14);

the first flow guiding component (14) is positioned in the air inlet section (7) and is fixedly connected to the supporting component (2), the first flow guiding component (14) is conical in shape tapering towards the direction away from the supporting component (2), and the axis of the conical shape is coincident with the axis of the air inlet section (7).

5. The ash removal apparatus as defined in claim 1, wherein:

further comprising a first connection ring (18);

the first connecting ring (18) is sleeved on the outer wall of the supporting component (2) and is fixedly connected to the inner wall of the inner shell (1), so that the first connecting ring (18) and the supporting component (2) jointly divide the interior of the inner shell (1) into a first space (15) corresponding to the first air inlet (5) and a second space (16) corresponding to the first air outlet (6), and the movable ring (4) is positioned in the second space (16);

a first channel (17) is arranged on the first connecting ring (18), and the first space (15) is communicated with the second space (16) through the first channel (17).

6. The ash removal apparatus as defined in claim 5, wherein:

the first connecting rings (18) are annular, the number of the first channels (17) is at least two, and at least two first channels (17) are uniformly distributed along the circumference of the first connecting rings (18).

7. The ash removal apparatus as defined in claim 6, wherein:

also comprises a second diversion component (19);

the second flow guiding component (19) is located in the first space (15) and is fixedly connected to the supporting component (2), the second flow guiding component (19) is conical in shape tapering towards the direction away from the supporting component (2), and the axis of the conical shape is coincident with the axis of the first connecting ring (18).

8. The ash removal apparatus as set forth in any one of claims 1 to 7, wherein:

also comprises an outer shell (20);

the outer shell (20) is provided with a second air inlet (21) and a second air outlet (22), the inner shell (1) is fixedly arranged in the outer shell (20), a second channel (23) with two ends respectively connected with the second air inlet (21) and the second air outlet (22) is formed between the outer wall of the inner shell (1) and the inner wall of the outer shell (20), and external air can enter the second channel (23) through the second air inlet (21) and is discharged through the second air outlet (22);

the stationary ring (3) is located within the outer housing (20), and the exhaust through hole (10) on the exhaust section (8) corresponds to the second exhaust port (22) so that the sound wave-containing gas exhausted from the exhaust through hole (10) can be exhausted to the outside of the outer housing (20) through the second exhaust port (22).

9. The ash removal apparatus as set forth in claim 8, wherein:

also comprises a second connection ring (24);

the second connecting ring (24) is sleeved on the outer wall of the supporting inner shell (1) and fixedly connected to the inner wall of the outer shell (20), and the second channel (23) is arranged on the second connecting ring (24).

10. The ash removal apparatus as set forth in claim 9, wherein:

the second connecting ring (24) is annular, the number of the second channels (23) is at least two, and at least two second channels (23) are uniformly distributed along the circumference of the second connecting ring (24).