Dense-thin separation burner with blending device

Abstract

The invention relates to the field of combustors, in particular to a rich-lean separation combustor with a blending device, which comprises a combustor shell, a guide sheet is fixedly mounted on the inner side wall of the combustor shell, an elastic steel sheet extends from the end part of the guide sheet, the elastic steel sheet is bent, an adjusting thread bushing is connected to the edge of the rear end of the elastic steel sheet, and the adjusting thread bushing is connected to the inner side wall of the combustor shell. A ball sleeve is slidably installed on the outer surface of the adjusting threaded sleeve, a ball seat is installed on the outer surface of the ball sleeve in an attached mode, the ball seat is embedded in the rear end of the burner shell in a penetrating mode, an adjusting threaded column is connected to the rear end of the ball sleeve, the adjusting threaded sleeve is screwed to the outer surface of the adjusting threaded column, and an ejection piece is arranged at the corner of the burner shell. According to the invention, the concentration and the lightness of the separated pulverized coal can be adjusted, the use requirement is effectively met, and meanwhile, the service life of the burner is also ensured.

Description

Technical Field

[0001] The present invention relates to the field of burners, and in particular to a rich-lean separation burner with a dispensing device. Background Art

[0002] The rich-lean separation burner is an advanced combustion device. When the pulverized coal air flow enters the bent part of the rich-lean separation burner, due to the inertia of the fluid, the pulverized coal particles will be subjected to a force towards the outside, and this force is the centrifugal force. Under the action of the centrifugal force, the heavier pulverized coal particles will be thrown to the outside of the bent pipe, while the lighter pulverized coal particles and air will remain more inside. Therefore, at the outlet of the burner, the pulverized coal is divided into a rich phase and a lean phase.

[0003] However, since the bending angle of the bent part of the existing rich-lean separation burner is constant, that is, the intensity of the centrifugal force caused is constant, the rich and lean degrees of the separated pulverized coal during use are constant and cannot be adjusted according to requirements, so it is difficult to meet the usage requirements. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the background art, and to propose a rich-lean separation burner with a dispensing device.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a rich-lean separation burner with a dispensing device, including a burner housing, a guide vane is fixedly installed on the inner side wall of the burner housing, an elastic steel sheet extends from the end of the guide vane, the elastic steel sheet is bent, a regulating threaded sleeve is connected to the rear end edge of the elastic steel sheet, a ball sleeve is slidably installed on the outer surface of the regulating threaded sleeve, a ball seat is fitted on the outer surface of the ball sleeve, the ball seat is embedded through the rear end of the burner housing, a regulating threaded column is connected to the rear end of the ball sleeve, the regulating threaded sleeve is screwed tightly on the outer surface of the regulating threaded column, a top member is provided at the corner of the burner housing, the top member presses tightly against the elastic steel sheet, and a fixing member is installed at the rear end of the burner housing, and the fixing member presses tightly against the ball sleeve.

[0006] Preferably, a connecting frame is rotatably installed on the outer surface of the regulating threaded column, the end of the connecting frame is fixed to the ball sleeve, and a first handwheel is coaxially fixedly installed at the end of the regulating threaded column.

[0007] Preferably, a fixing block extends from the side edge of the guide vane, the end of the fixing block is fixed to the inner wall of the burner housing, a connecting shaft is embedded through the end of the regulating threaded sleeve, and both ends of the connecting shaft are rotatably installed with shaft seats, and the end of the shaft seat is fixed to the elastic steel sheet.

[0008] Preferably, the fixing member includes a first threaded ring installed at the rear end of the burner housing. A first threaded post is screwed tightly inside the first threaded ring. Both ends of the first threaded post extend out from the inside of the first threaded ring. One end of the first threaded post is connected to a push ear bracket, and the push ear bracket is inclined. A fixing ear is installed through the side surface of the ball seat, and the end of the fixing ear abuts against the outer surface of the ball sleeve. One end of the push ear bracket is connected to the fixing ear.

[0009] Preferably, a lower connecting seat extends from the rear end edge of the fixing ear. One end of the push ear bracket is rotatably connected to the inside of the lower connecting seat. The other end of the push ear bracket is rotatably installed with an upper connecting seat. The upper connecting seat is fixed to one end of the first threaded post. The other end of the first threaded post is coaxially and fixedly installed with a second handwheel.

[0010] Preferably, a support frame is fixedly installed on the side surface of the first threaded ring. The end of the support frame is fixed to the burner housing. A receiving groove is opened at the rear end of the burner housing. The fixing ear is located inside the receiving groove. An ear hole is opened through the side surface of the ball seat, and the fixing ear fits inside the ear hole.

[0011] Preferably, guide edges extend from the upper and lower end surfaces inside the receiving groove. Guide grooves are opened on the upper and lower end surfaces of the fixing ear. The guide edges fit inside the guide grooves.

[0012] Preferably, the top member includes a plurality of rod sleeves evenly distributed and embedded through the corners of the burner housing. A rack rod is slidably installed through the inside of each of the plurality of rod sleeves. A top piece rack is fixedly installed at the end of the rack rod, and the top piece rack abuts against the elastic steel sheet.

[0013] Preferably, a ring frame is fixedly installed at the lower edge of the burner housing. A second threaded ring is embedded at the end of the ring frame. A second threaded post is screwed tightly inside the second threaded ring. Both ends of the second threaded post penetrate out from the inside of the second threaded ring.

[0014] Preferably, a door frame is fixedly installed at one end of the second threaded post. An arc-shaped top seat is fixedly installed at the end of the door frame. A plurality of top pressing columns are evenly distributed and embedded at the upper end of the arc-shaped top seat. A column sleeve is embedded through the lower end of the rod sleeve. The top pressing columns are slidably installed inside the column sleeve. The end of the top pressing column abuts against the rack rod. The other end of the second threaded post is coaxially and fixedly installed with a third handwheel.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By rotating the first threaded column, the first threaded column can drive the push ear frame to move by means of the thread between the first threaded column and the first threaded ring, and then drive the fixed ear to move. At this time, the guide edge slides in the guide groove to guide the fixed ear so that the fixed ear can be disengaged from the ball sleeve, allowing the ball sleeve to move without the top pressure of the fixed ear. Subsequently, the adjusting threaded column is rotated so that the adjusting threaded sleeve screwed onto the adjusting threaded column can slide down in the ball sleeve to push the end of the elastic steel sheet, thereby changing the bending angle of the elastic steel sheet, that is, changing the intensity of the centrifugal force, and thus changing the centrifugal separation effect of the pulverized coal air flow, enabling the concentration and dilution degree after pulverized coal separation to be adjusted, effectively meeting the usage requirements.

[0017] 2. By rotating the second threaded column, the second threaded column can drive multiple tightening columns to move synchronously by means of the thread between the second threaded column and the second threaded ring, so as to disengage from the support rod, allowing multiple support rods to move without the top pressure of the tightening columns. Subsequently, the multiple support rods are pushed and adjusted so that the top piece racks on the multiple support rods can all be tightly pressed against the elastic steel sheet from the outside, thereby increasing the stress intensity of the elastic steel sheet and avoiding deformation due to long-term impact of the pulverized coal air flow, effectively ensuring the service life of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Structural schematic diagram of a concentration-dilution separation burner with a dispensing device according to the present invention;

[0019] Figure 2 Another perspective schematic diagram of a concentration-dilution separation burner with a dispensing device according to the present invention;

[0020] Figure 3 For a concentration-dilution separation burner with a dispensing device according to the present invention Figure 2 Enlarged view of A;

[0021] Figure 4 Schematic diagram of the fixed ear of a concentration-dilution separation burner with a dispensing device according to the present invention;

[0022] Figure 5 Internal view of the burner housing of a concentration-dilution separation burner with a dispensing device according to the present invention;

[0023] Figure 6 For a concentration-dilution separation burner with a dispensing device according to the present invention Figure 5 Enlarged view of B;

[0024] Figure 7 Schematic diagram of the support rod of a concentration-dilution separation burner with a dispensing device according to the present invention.

[0025] In the figure: 1, burner shell; 2, arc top seat; 3, fixing block; 4, guide piece; 5, elastic steel sheet; 6, top sheet frame; 7, rod; 8, ball sleeve; 9, ball seat; 10, adjusting thread sleeve; 11, connecting shaft; 12, shaft seat; 13, connecting and fixing frame; 14, adjusting thread post; 15, guide plate; 16, first handwheel; 17, support frame; 18, upper connecting seat; 19, first thread ring; 20, first thread post; 21, second handwheel; 22, push ear frame; 23, fixing ear; 24, accommodation groove; 25, guide rib; 26, guide groove; 27, ear hole; 28, lower connecting seat; 29, rod sleeve; 30, column sleeve; 31, top pressing column; 32, door frame; 33, second thread post; 34, second thread ring; 35, ring frame; 36, third handwheel; 37, dense-phase nozzle; 38, lean-phase nozzle. Detailed implementation mode

[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variants.

[0027] As Figures 1-7 A dense-lean separation burner with a blending device as shown includes a burner shell 1. A guide piece 4 is fixedly installed on the inner side wall of the burner shell 1. An elastic steel sheet 5 extends from the end of the guide piece 4. The guide piece 4 serves to guide the pulverized coal air flow to the elastic steel sheet 5. The elastic steel sheet 5 is bent and can generate centrifugal force to separate the pulverized coal air flow into a dense pulverized coal air flow and a lean pulverized coal air flow. The rear end edge of the elastic steel sheet 5 is connected with an adjusting thread sleeve 10. The adjusting thread sleeve 10 can push the end of the elastic steel sheet 5 to change the bending amplitude of the elastic steel sheet 5, so as to achieve the purpose of changing the bending angle. A ball sleeve 8 is slidably installed on the outer surface of the adjusting thread sleeve 10. The outer surface of the ball sleeve 8 is fitted with a ball seat 9. The ball sleeve 8 can rotate inside the ball seat 9, enabling the adjusting thread sleeve 10 to adapt to the change in the bending amplitude of the elastic steel sheet 5. The ball seat 9 is penetrated and embedded in the rear end of the burner shell 1. The rear end of the ball sleeve 8 is connected with an adjusting thread post 14. The adjusting thread sleeve 10 is screwed onto the outer surface of the adjusting thread post 14. The adjusting thread post 14 can drive the adjusting thread sleeve 10 to move to push the end of the elastic steel sheet 5. A top piece is arranged at the corner of the burner shell 1 and presses against the elastic steel sheet 5. A fixing piece is installed at the rear end of the burner shell 1 and presses against the ball sleeve 8.

[0028] A connecting and fixing frame 13 is rotatably installed on the outer surface of the adjusting thread post 14. The end of the connecting and fixing frame 13 is fixed to the ball sleeve 8. The connecting and fixing frame 13 serves to support the adjusting thread post 14. The end of the adjusting thread post 14 is coaxially and fixedly installed with a first handwheel 16. The first handwheel 16 serves to facilitate the rotation of the adjusting thread post 14.

[0029] A fixing block 3 extends from the side edge of the guide piece 4. The end of the fixing block 3 is fixed to the inner wall of the burner housing 1. The fixing block 3 serves to support and fix the guide piece 4. The end of the adjusting threaded sleeve 10 is penetrated and inlaid with a connecting shaft 11. The connecting shaft 11 can rotate within the shaft seat 12, enabling the adjusting threaded sleeve 10 to adapt to the change in the bending amplitude of the elastic steel sheet 5. Both ends of the connecting shaft 11 are rotatably installed with shaft seats 12. The end of the shaft seat 12 is fixed to the elastic steel sheet 5. The shaft seat 12 serves to carry the connecting shaft 11.

[0030] The fixing member includes a first threaded ring 19 installed at the rear end of the burner housing 1. A first threaded post 20 is screwed tightly inside the first threaded ring 19. Both ends of the first threaded post 20 extend out from the inside of the first threaded ring 19. The first threaded ring 19 and the first threaded post 20 serve to drive the push ear frame 22 to move. One end of the first threaded post 20 is connected to the push ear frame 22. The push ear frame 22 is inclined. A fixing ear 23 is penetrated and installed on the side of the ball seat 9. The push ear frame 22 serves to push the fixing ear 23. The end of the fixing ear 23 abuts against the outer surface of the ball sleeve 8. The fixing ear 23 can tightly fix the ball sleeve 8, preventing the adjusting threaded sleeve 10 from rotating, thereby ensuring that the elastic steel sheet 5 does not vibrate. One end of the push ear frame 22 is connected to the fixing ear 23.

[0031] A lower connecting seat 28 extends from the rear edge of the fixing ear 23. One end of the push ear frame 22 is rotatably connected to the inside of the lower connecting seat 28. The lower connecting seat 28 serves to connect the fixing ear 23. The other end of the push ear frame 22 is rotatably installed with an upper connecting seat 18. The upper connecting seat 18 is fixed to one end of the first threaded post 20. The upper connecting seat 18 serves to connect the fixing ear 23. The other end of the first threaded post 20 is coaxially and fixedly installed with a second handwheel 21. The second handwheel 21 serves to facilitate the rotation of the first threaded post 20.

[0032] A support frame 17 is fixedly installed on the side of the first threaded ring 19. The end of the support frame 17 is fixed to the burner housing 1. The support frame 17 serves to support and fix the first threaded ring 19. A receiving groove 24 is opened at the rear end of the burner housing 1. The fixing ear 23 is located inside the receiving groove 24. The receiving groove 24 serves to receive the fixing ear 23. An ear hole 27 is penetrated and opened on the side of the ball seat 9. The fixing ear 23 fits inside the ear hole 27. The ear hole 27 can allow the fixing ear 23 to pass through the ball seat 9 to abut against the ball sleeve 8.

[0033] Guide edges 25 extend from both the upper and lower end faces inside the receiving groove 24. Guide grooves 26 are opened on both the upper and lower end faces of the fixing ear 23. The guide edges 25 and the guide grooves 26 serve to guide the fixing ear 23. The guide edges 25 fit inside the guide grooves 26.

[0034] The ejector includes a plurality of rod sleeves 29 evenly distributed and embedded through the corners of the burner housing 1. A support rod 7 is slidably installed through the interior of each of the plurality of rod sleeves 29. The rod sleeves 29 serve to guide the support rod 7. A top piece frame 6 is fixedly installed at the end of the support rod 7. The support rod 7 serves to carry the top piece frame 6. The top piece frame 6 presses against the elastic steel sheet 5. The top piece frame 6 can press against the elastic steel sheet 5 from the outside, thereby increasing the stress intensity of the elastic steel sheet 5 to prevent deformation due to the long-term impact of the pulverized coal air flow.

[0035] A ring frame 35 is fixedly installed at the lower edge of the burner housing 1. A second threaded ring 34 is embedded at the end of the ring frame 35. The ring frame 35 serves to fix the second threaded ring 34. A second threaded post 33 is screwed into the interior of the second threaded ring 34. Both ends of the second threaded post 33 penetrate out of the interior of the second threaded ring 34. The second threaded ring 34 and the second threaded post 33 serve to drive the ejector post 31 to move.

[0036] One end of the second threaded post 33 is fixedly installed with a door frame 32. An arc-shaped top seat 2 is fixedly installed at the end of the door frame 32. The door frame 32 serves to evenly apply the thrust force to the arc-shaped top seat 2. A plurality of ejector posts 31 are evenly distributed and embedded in the upper end of the arc-shaped top seat 2. The arc-shaped top seat 2 serves to carry the ejector posts 31. A column sleeve 30 is embedded through the lower end of the rod sleeve 29. The ejector post 31 is slidably installed inside the column sleeve 30. The column sleeve 30 serves to guide the ejector post 31. The end of the ejector post 31 presses against the support rod 7. The ejector post 31 can press against the support rod 7, thereby fixing the position of the top piece frame 6. A third handwheel 36 is coaxially fixedly installed at the other end of the second threaded post 33. The third handwheel 36 serves to facilitate the rotation of the second threaded post 33.

[0037] During use, the pulverized coal gas stream enters the burner housing 1. When the pulverized coal gas stream passes through the curved elastic steel sheet 5, due to the action of centrifugal force, most of the pulverized coal is separated and concentrated on the outer side and discharged through the dense-phase nozzle 37, while the lean pulverized coal gas stream is located on the inner side and is discharged through the lean-phase nozzle 38 under the guidance of the guide plate 15. If the density of the pulverized coal after separation cannot meet the requirements of use, the first threaded column 20 can be rotated first. The first threaded column 20 drives the push ear frame 22 to move by means of the thread between the first threaded column 20 and the first threaded ring 19, and then drives the fixed ear 23 to move. At this time, the guide edge 25 slides in the guide groove 26 to guide the fixed ear 23 so that the fixed ear 23 can be separated from the ball sleeve 8, allowing the ball sleeve 8 to move without the top pressure of the fixed ear 23. Subsequently, the adjusting threaded column 14 is rotated so that the adjusting threaded sleeve 10 screwed on the adjusting threaded column 14 can slide down in the ball sleeve 8 to push the end of the elastic steel sheet 5 to change the bending angle of the elastic steel sheet 5, that is, to change the intensity of the centrifugal force action, thereby changing the centrifugal separation effect of the pulverized coal gas stream, so that the density of the pulverized coal after separation can meet the requirements of use. During this process, the second threaded column 33 can be rotated so that the second threaded column 33 drives multiple tightening columns 31 to move synchronously by means of the thread between the second threaded column 33 and the second threaded ring 34 to separate from the support rod 7, allowing the multiple support rods 7 to move without the top pressure of the tightening columns 31. Subsequently, the multiple support rods 7 are pushed and adjusted so that the top piece frames 6 on the multiple support rods 7 can all be tightly pressed against the elastic steel sheet 5 from the outside, thereby increasing the stress intensity of the elastic steel sheet 5 to avoid deformation due to long-term impact of the pulverized coal gas stream.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A thick-thin separation burner with a dispensing device, comprising a burner housing (1), characterized in that: On the inner side wall of the burner housing (1), a guide piece (4) is fixedly installed. An elastic steel sheet (5) extends from the end of the guide piece (4). The elastic steel sheet (5) is bent. At the rear edge of the elastic steel sheet (5), an adjusting threaded sleeve (10) is connected. A ball sleeve (8) is slidably installed on the outer surface of the adjusting threaded sleeve (10). A ball seat (9) is fitted on the outer surface of the ball sleeve (8). The ball seat (9) is embedded through the rear end of the burner housing (1). The rear end of the ball sleeve (8) is connected to an adjusting threaded post (14). The adjusting threaded sleeve (10) is screwed onto the outer surface of the adjusting threaded post (14). At the corner of the burner housing (1), a top piece is provided, and the top piece presses against the elastic steel sheet (5). A fixing piece is installed at the rear end of the burner housing (1), and the fixing piece presses against the ball sleeve (8).

2. The intensity-separated burner with a dispensing device according to claim 1, wherein: A connecting and fixing frame (13) is rotatably installed on the outer surface of the adjusting threaded post (14). The end of the connecting and fixing frame (13) is fixed to the ball sleeve (8). At the end of the adjusting threaded post (14), a first handwheel (16) is coaxially fixedly installed.

3. The intensity-separated burner with a dispensing device according to claim 1, characterized in that: A fixing block (3) extends from the side edge of the guide piece (4). The end of the fixing block (3) is fixed to the inner wall of the burner housing (1). A connecting shaft (11) is embedded through the end of the adjusting threaded sleeve (10). Both ends of the connecting shaft (11) are rotatably installed with shaft seats (12). The end of the shaft seat (12) is fixed to the elastic steel sheet (5).

4. The intensity-separating burner with a dispensing device according to claim 1, characterized in that: The fixing piece includes a first threaded ring (19) installed at the rear end of the burner housing (1). A first threaded post (20) is screwed inside the first threaded ring (19). Both ends of the first threaded post (20) extend out from the inside of the first threaded ring (19). One end of the first threaded post (20) is connected to a pushing ear frame (22). The pushing ear frame (22) is inclined. A fixing ear (23) is installed through the side of the ball seat (9). The end of the fixing ear (23) presses against the outer surface of the ball sleeve (8). One end of the pushing ear frame (22) is connected to the fixing ear (23).

5. The intensity-separated burner with a dispensing device according to claim 4, characterized in that: A lower connecting seat (28) extends from the rear edge of the fixing ear (23). One end of the pushing ear frame (22) is rotatably connected to the inside of the lower connecting seat (28). The other end of the pushing ear frame (22) is rotatably installed with an upper connecting seat (18). The upper connecting seat (18) is fixed to one end of the first threaded post (20). A second handwheel (21) is coaxially fixedly installed at the other end of the first threaded post (20).

6. The intensity-separating burner with a dispensing device according to claim 4, characterized in that: A support frame (17) is fixedly installed on the side of the first threaded ring (19). The end of the support frame (17) is fixed to the burner housing (1). A receiving groove (24) is opened at the rear end of the burner housing (1). The fixing ear (23) is located inside the receiving groove (24). An ear hole (27) is opened through the side of the ball seat (9). The fixing ear (23) fits inside the ear hole (27).

7. The intensity-separated burner with a dispensing device according to claim 6, characterized in that: Guide edges (25) extend from both the upper and lower end faces inside the accommodation groove (24). Guide grooves (26) are formed on both the upper and lower end faces of the fixed ear (23), and the guide edges (25) are fitted inside the guide grooves (26).

8. The intensity-separated burner with a dispensing device according to claim 1, wherein: The top member includes a plurality of rod sleeves (29) evenly distributed and penetratingly embedded at the corners of the burner housing (1). A support rod (7) is slidably installed through the inside of each of the plurality of rod sleeves (29). A top piece edge frame (6) is fixedly installed at the end of the support rod (7), and the top piece edge frame (6) presses tightly against the elastic steel sheet (5).

9. The intensity-separated burner with a dispensing device according to claim 8, characterized in that: A ring frame (35) is fixedly installed at the lower edge of the burner housing (1). A second threaded ring (34) is embedded at the end of the ring frame (35). A second threaded column (33) is screwed tightly inside the second threaded ring (34), and both ends of the second threaded column (33) penetrate out of the inside of the second threaded ring (34).

10. The fuel-rich / lean-separated burner with a blending device according to claim 9, characterized in that: One end of the second threaded column (33) is fixedly installed with a door frame (32). An arc-shaped top seat (2) is fixedly installed at the end of the door frame (32). A plurality of top pressing columns (31) are evenly distributed and embedded at the upper end of the arc-shaped top seat (2). A column sleeve (30) is penetrated and embedded at the lower end of the rod sleeve (29). The top pressing columns (31) are slidably installed inside the column sleeve (30), and the ends of the top pressing columns (31) press tightly against the support rod (7). A third handwheel (36) is coaxially fixedly installed at the other end of the second threaded column (33).

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