An ammonia injection grid for SCR denitration system

Abstract

The utility model relates to the technical field of ammonia spraying grids, and in particular refers to an ammonia spraying grid for an SCR denitrification system, comprising a smoke pipe, a placement groove is opened on the side of the smoke pipe, an ammonia spraying grid pipe is arranged inside the placement groove, a sealing plate is fixedly provided on the side of the ammonia spraying grid pipe, a fixing ring is fixedly provided on one side of the sealing plate, a first sealing gasket is fixedly provided on the side of the fixing ring, a sealing seat is provided on the side of the first sealing gasket, a sealing ring is fixedly provided on the side of the sealing plate, a second sealing gasket is fixedly provided on the inner side of the sealing ring, the inner side of the second sealing gasket is fitted with the side of the sealing seat, and two connecting boxes are fixedly provided on the side of the ammonia spraying grid pipe. The beneficial effect of the utility model is that when the device is disassembling and assembling the ammonia spraying grid pipe, it only needs to press the push plate and move the ammonia spraying grid pipe to complete the disassembly and assembly of the ammonia spraying grid pipe, thereby improving the disassembly and assembly efficiency of the ammonia spraying grid pipe and thus improving the maintenance efficiency of the ammonia spraying grid pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia injection grids, in particular to an ammonia injection grid for an SCR denitration system. Background Art

[0002] The SCR denitrification system is a technology used to reduce the emission of nitrogen oxides in industrial flue gas. It sprays ammonia water through the ammonia grid to atomize the ammonia water so that the atomized ammonia water is fully mixed with the nitrogen oxides in the flue gas, thereby improving the cleaning efficiency of nitrogen oxides.

[0003] Upon checking, the disclosure (announcement) number: CN217092917U discloses an ammonia spraying grid for an SCR denitration system, including a flue and an ammonia spraying grid pipe, one side of the flue is provided with a plurality of evenly distributed sleeves, the outer end of the sleeve is provided with a connecting flange 1, the other side of the flue is provided with a socket matching the sleeve, the sleeve is penetrated with the ammonia spraying grid pipe, one end of the ammonia spraying grid pipe extends to the side of the sleeve and is connected to the connecting flange 2, the other end of the ammonia spraying grid pipe extends into the flue and is connected to the socket, and the ammonia spraying grid pipe is located in the flue and is close to the connecting flange 2. A butterfly valve is provided on the side of the ammonia spraying grid pipe. The claim of this technology discloses that "the utility model adopts an ammonia spraying grid for an SCR denitration system with the above-mentioned structure to prevent the ammonia spraying grid nozzle from being blocked by dust accumulation and ensure the normal operation of the SCR denitration system, and the ammonia spraying grid pipe is easy to disassemble and assemble, maintain and use".

[0004] When an existing ammonia injection grid for an SCR denitrification system is in use, the device fixes flange one and flange two together by a plurality of bolts, thereby fixing the ammonia injection grid pipe and the flue together. When the ammonia injection grid pipe needs to be separated from the flue, the plurality of bolts need to be removed to separate the ammonia injection grid pipe from the flue, which reduces the disassembly and assembly speed of the ammonia injection grid pipe, thereby reducing the maintenance efficiency of the ammonia injection grid pipe.

[0005] In order to solve the above problems, the present application proposes an ammonia injection grid for an SCR denitration system. Utility Model Content

[0006] To solve the problems raised in the above background technology. The utility model provides an ammonia spraying grid for an SCR denitration system, which can be disassembled and assembled by pressing a push plate and moving the ammonia spraying grid pipe, thereby improving the disassembly and assembly efficiency of the ammonia spraying grid pipe and thus improving the maintenance efficiency of the ammonia spraying grid pipe.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ammonia injection grid for an SCR denitration system, comprising a smoke pipe, a placement groove is provided on the side of the smoke pipe, an ammonia injection grid pipe is provided inside the placement groove, a sealing plate is fixedly provided on the side of the ammonia injection grid pipe, a fixing ring is fixedly provided on one side of the sealing plate, a first sealing gasket is fixedly provided on the side of the fixing ring, a sealing seat is provided on the side of the first sealing gasket, a sealing ring is fixedly provided on the side of the sealing plate, a second sealing gasket is fixedly provided on the inner side of the sealing ring, and the inner side of the second sealing gasket is aligned with the side of the sealing seat. Fitting, two connecting boxes are fixedly provided on the side of the ammonia injection grid pipe, push rods are provided inside the two connecting boxes, return springs are provided at one end of the two push rods, pressure plates are fixedly provided on the sides of the two push rods, limit blocks are fixedly provided on the sides of the two pressure plates, two limit seats are fixedly provided on the side of the sealing seat, movable grooves are opened on one side of the two limit seats, the interiors of the two movable grooves are respectively fitted with the sides of the two pressure plates, limiting grooves are opened inside the two limit seats, and the sides of the two limit blocks are respectively fitted with the interiors of the two limit grooves.

[0008] As a preferred ammonia injection grid for an SCR denitrification system of the utility model, one side of the sealing seat is fixedly connected to the side of the smoke pipe, a sealing groove is provided inside the sealing seat, the inside of the sealing groove fits with the side of the first sealing gasket, and the sealing seat facilitates limiting the fixing ring and the sealing ring.

[0009] As a preferred ammonia injection grid for an SCR denitration system of the utility model, a fixing hole is opened inside the fixing ring, and the inside of the fixing hole is fixedly connected to the side of the ammonia injection grid pipe, and the fixing ring is convenient for fixing the first sealing gasket.

[0010] As a preferred ammonia injection grid for an SCR denitrification system of the utility model, one side of the two return springs is fixedly connected to one end of the two push rods respectively, and the other sides of the two return springs are fixedly connected to the inside of the two connecting boxes respectively, so that the push rods can easily drive the pressure plate to move.

[0011] As a preferred ammonia injection grid for an SCR denitrification system of the utility model, the other ends of the two push rods are provided with a pressing pad, one side of the two pressing pads is respectively fixedly connected to the other ends of the two push rods, and the pressing pad facilitates improving the comfort when pressing the push rods.

[0012] As a preferred ammonia injection grid for an SCR denitration system of the utility model, one side of the two connecting boxes is provided with a movable groove, the interiors of the two movable grooves are respectively fitted with the side surfaces of the two pressure plates, and the connecting box is convenient for limiting the push rod.

[0013] As a preferred ammonia injection grid for an SCR denitrification system of the utility model, a fixing seat is fixed inside the smoke pipe, a mounting groove is opened inside the fixing seat, the inside of the mounting groove fits with the side of the ammonia injection grid pipe, and the fixing seat facilitates improving the stability of the ammonia injection grid pipe in the smoke pipe.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The sealing performance of the connection between the sealing seat and the fixing ring is improved by the first sealing gasket, and the sealing performance of the connection between the sealing ring and the sealing seat is improved by the second sealing gasket, so that the sealing plate and the sealing seat have a higher sealing performance, thereby preventing smoke from leaking through the connection between the sealing seat and the sealing plate. When the ammonia spraying grid pipe needs to be disassembled for maintenance, the two push rods are pressed at the same time, thereby driving the two limit blocks to approach each other, so that the limit blocks are separated from the limit grooves. At this time, the ammonia spraying grid pipe is moved to the right to remove the ammonia spraying grid pipe. When the ammonia spraying grid pipe needs to be installed, the ammonia spraying grid pipe is passed through the sealing seat into the interior of the smoke pipe, and the two push rods are pressed at the same time to drive the two The limit blocks are close to each other, so that the limit blocks can pass through the movable groove and move the ammonia injection grid pipe to the left, so that the limit block enters the interior of the movable groove, and the push rod is released. The push rod is squeezed by the reset spring, so that the two push rods move away from each other, thereby driving the two limit blocks to move away from each other, so that the limit blocks enter the limit groove, so that the limit blocks and the limit seats are fixed together, so that the ammonia injection grid pipe and the smoke pipe are fixed together, so that when the device disassembles and assembles the ammonia injection grid pipe, it only needs to press the push plate and move the ammonia injection grid pipe to complete the disassembly and assembly of the ammonia injection grid pipe, thereby improving the disassembly and assembly efficiency of the ammonia injection grid pipe, thereby improving the maintenance efficiency of the ammonia injection grid pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the sealing seat of the utility model;

[0019] Figure 3 This is a schematic diagram of the split structure of the sealing seat of the utility model;

[0020] Figure 4 For this utility model Figure 3 Schematic diagram of the structure at point A.

[0021] In the figure:

[0022] 1. Smoke pipe; 2. Ammonia spraying grid pipe; 3. Sealing plate; 4. Fixing ring; 5. First sealing gasket; 6. Sealing seat; 7. Sealing ring; 8. Second sealing gasket; 9. Connecting box; 10. Push rod; 11. Return spring; 12. Pressing plate; 13. Limiting block; 14. Limiting seat; 15. Pressing pad; 16. Fixing seat. DETAILED DESCRIPTION

[0023] 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.

[0024] Example 1

[0025] like Figure 1-Figure 4 As shown;

[0026] An ammonia injection grid for an SCR denitration system comprises a smoke pipe.

[0027] After checking the publication (announcement) number: CN217092917U discloses an ammonia spraying grid for SCR denitration system. In order to solve the existing problems existing in this prior art, as disclosed in the background technology above, "the existing ammonia spraying grid for SCR denitration system is used. The device fixes flange one and flange two together by a plurality of bolts, so that the ammonia spraying grid pipe and the flue are fixed together. When the ammonia spraying grid pipe needs to be separated from the flue, the plurality of bolts need to be removed to separate the ammonia spraying grid pipe from the flue, which reduces the disassembly and assembly speed of the ammonia spraying grid pipe, thereby reducing the maintenance efficiency of the ammonia spraying grid pipe." In terms of combined use, this problem is obviously a problem that is present and difficult to solve. Therefore, in order to solve this technical problem, a limit block and a limit seat are added to this application document;

[0028] More specifically:

[0029] like Figures 1 to 4 As shown:

[0030] In combination with the above content: an ammonia injection grid for an SCR denitration system, comprising a smoke pipe 1, a placement groove is provided on the side of the smoke pipe 1, an ammonia injection grid pipe 2 is provided inside the placement groove, a sealing plate 3 is fixedly provided on the side of the ammonia injection grid pipe 2, a fixing ring 4 is fixedly provided on one side of the sealing plate 3, a first sealing gasket 5 is fixedly provided on the side of the fixing ring 4, a sealing seat 6 is provided on the side of the first sealing gasket 5, a sealing ring 7 is fixedly provided on the side of the sealing plate 3, a second sealing gasket 8 is fixedly provided on the inner side of the sealing ring 7, the inner side of the second sealing gasket 8 is fitted with the side of the sealing seat 6, and the side of the ammonia injection grid pipe 2 Two connecting boxes 9 are fixedly provided, and push rods 10 are provided inside the two connecting boxes 9. Reset springs 11 are provided at one end of the two push rods 10. Pressure plates 12 are fixedly provided on the sides of the two push rods 10. Limit blocks 13 are fixedly provided on the sides of the two pressure plates 12. Two limit seats 14 are fixedly provided on the sides of the sealing seat 6. Movable grooves are provided on one side of the two limit seats 14. The interiors of the two movable grooves are respectively fitted with the sides of the two pressure plates 12. Limiting grooves are provided inside the two limit seats 14. The sides of the two limit blocks 13 are respectively fitted with the interiors of the two limit grooves.

[0031] In this embodiment: the first sealing gasket 5 is used to improve the sealing performance of the connection between the sealing seat 6 and the fixing ring 4, and the second sealing gasket 8 is used to improve the sealing performance of the connection between the sealing ring 7 and the sealing seat 6, so that the sealing plate 3 and the sealing seat 6 have a higher sealing performance, thereby preventing the smoke from leaking through the connection between the sealing seat 6 and the sealing plate 3. When the ammonia spray grid pipe 2 needs to be disassembled for maintenance, the two pressing pads 15 are pressed at the same time, thereby driving the two push rods 10 to approach each other, thereby driving the two pressing plates 12 to approach each other, thereby driving the two limit blocks 13 The two push rods 10 are pressed together to move the two pressure plates 12 closer to each other, thereby driving the two limit blocks 13 to move to the right at the same time, so that the limit block 13 is separated from the limit seat 14, and the ammonia spraying grid tube 2 is continued to be moved to the right to remove the ammonia spraying grid tube 2. When the ammonia spraying grid tube 2 needs to be installed, the ammonia spraying grid tube 2 is passed through the sealing seat 6, so that the ammonia spraying grid tube 2 enters the interior of the smoke pipe 1, and the two push rods 10 are pressed at the same time, thereby driving the two pressure plates 12 closer to each other, thereby driving the two limit blocks 13 The first and second sealing gaskets 5 are moved closer to each other, so that the limit block 13 can pass through the movable groove and move the ammonia injection grid pipe 2 to the left, so that the side of the first sealing gasket 5 fits with the inner side of the sealing seat 6, and the inner side of the second sealing gasket 8 fits with the outer side of the sealing seat 6, so that the connection between the sealing seat 6 and the sealing plate 3 has a higher sealing performance. At this time, the pressure plate 12 and the limit block 13 enter the interior of the movable groove. When the limit block 13 completely enters the movable groove, the push rod 10 is released, and the push rod 10 is squeezed by the reset spring 11, so that the two push rods 10 are moved away from each other, thereby driving the two The pressure plates 12 move away from each other, thereby driving the two limit blocks 13 to move away from each other, so that the limit blocks 13 enter the limit grooves, so that the limit blocks 13 and the limit seats 14 are fixed together, so that the ammonia injection grid tube 2 and the sealing seat 6 are fixed together, so that the ammonia injection grid tube 2 and the smoke pipe 1 are fixed together, so that when the device disassembles and assembles the ammonia injection grid tube 2, it only needs to press the push plate and move the ammonia injection grid tube 2 to complete the disassembly and assembly of the ammonia injection grid tube 2, thereby improving the disassembly and assembly efficiency of the ammonia injection grid tube 2, thereby improving the maintenance efficiency of the ammonia injection grid tube 2.

[0032] In an optional embodiment, one side of the sealing seat 6 is fixedly connected to the side of the smoke pipe 1 , a sealing groove is provided inside the sealing seat 6 , and the inside of the sealing groove fits with the side of the first sealing gasket 5 .

[0033] In this embodiment, the sealing seat 6 is convenient for limiting the position of the fixing ring 4 and the sealing ring 7 .

[0034] In an optional embodiment, a fixing hole is provided inside the fixing ring 4 , and the inside of the fixing hole is fixedly connected to the side surface of the ammonia injection grid pipe 2 .

[0035] In this embodiment: the fixing ring 4 is convenient for fixing the first sealing gasket 5 .

[0036] In an optional embodiment: one side of the two return springs 11 is fixedly connected to one end of the two push rods 10 , respectively, and the other side of the two return springs 11 is fixedly connected to the inside of the two connection boxes 9 , respectively.

[0037] In this embodiment, the push rod 10 is convenient for driving the pressing plate 12 to move.

[0038] In an optional embodiment: a pressing pad 15 is provided at the other end of the two push rods 10 , and one side of the two pressing pads 15 is fixedly connected to the other end of the two push rods 10 .

[0039] In this embodiment, the pressing pad 15 is convenient for improving the comfort when pressing the push rod 10 .

[0040] In an optional embodiment: a movable groove is formed on one side of the two connection boxes 9 , and the interiors of the two movable grooves are respectively fitted with the side surfaces of the two pressing plates 12 .

[0041] In this embodiment: the connection box 9 is convenient for limiting the push rod 10.

[0042] In an optional embodiment, a fixing seat 16 is fixed inside the smoke pipe 1 , a mounting groove is provided inside the fixing seat 16 , and the inside of the mounting groove fits with the side surface of the ammonia injection grid pipe 2 .

[0043] In this embodiment, the fixing seat 16 is convenient for improving the stability of the ammonia injection grid tube 2 in the smoke pipe 1.

[0044] The working principle and use process of the utility model are as follows: the first sealing gasket 5 is used to improve the sealing performance of the connection between the sealing seat 6 and the fixing ring 4, and the second sealing gasket 8 is used to improve the sealing performance of the connection between the sealing ring 7 and the sealing seat 6, so that the sealing plate 3 and the sealing seat 6 have a higher sealing performance, thereby preventing the smoke from leaking through the connection between the sealing seat 6 and the sealing plate 3. When the ammonia spraying grid pipe 2 needs to be disassembled for maintenance, the two pressing pads 15 are pressed at the same time, thereby driving the two push rods 10 to approach each other, thereby driving the two pressing plates 12 to approach each other, thereby driving the two The two limit blocks 13 are close to each other, so that the limit block 13 is separated from the limit groove. At this time, the ammonia spraying grid pipe 2 is moved to the right, thereby driving the connection box 9, the push rod 10, the pressure plate 12 and the limit block 13 to move to the right at the same time, so that the limit block 13 is separated from the limit seat 14, and the ammonia spraying grid pipe 2 is continued to be moved to the right to remove the ammonia spraying grid pipe 2. When the ammonia spraying grid pipe 2 needs to be installed, the ammonia spraying grid pipe 2 is passed through the sealing seat 6, so that the ammonia spraying grid pipe 2 enters the interior of the smoke pipe 1, and the two push rods 10 are pressed at the same time, thereby driving the two pressure plates 12 to move close to each other, thereby driving the two limit The positioning blocks 13 are close to each other, so that the positioning block 13 can pass through the movable groove and move the ammonia injection grid pipe 2 to the left, so that the side of the first sealing gasket 5 fits with the inner side of the sealing seat 6, and the inner side of the second sealing gasket 8 fits with the outer side of the sealing seat 6, so that the connection between the sealing seat 6 and the sealing plate 3 has a higher sealing performance. At this time, the pressure plate 12 and the positioning block 13 enter the interior of the movable groove. When the positioning block 13 completely enters the movable groove, the push rod 10 is released, and the push rod 10 is squeezed by the reset spring 11, so that the two push rods 10 are separated from each other, thereby driving The two pressure plates 12 move away from each other, thereby driving the two limit blocks 13 to move away from each other, so that the limit blocks 13 enter the limit grooves, so that the limit blocks 13 and the limit seats 14 are fixed together, so that the ammonia spraying grid tube 2 and the sealing seat 6 are fixed together, so that the ammonia spraying grid tube 2 and the smoke pipe 1 are fixed together, so that when the device disassembles and assembles the ammonia spraying grid tube 2, it only needs to press the push plate and move the ammonia spraying grid tube 2 to complete the disassembly and assembly of the ammonia spraying grid tube 2, thereby improving the disassembly and assembly efficiency of the ammonia spraying grid tube 2, thereby improving the maintenance efficiency of the ammonia spraying grid tube 2.

[0045] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ammonia injection grid for an SCR denitration system, comprising a smoke pipe (1), characterized in that: A placement groove is provided on the side of the smoke pipe (1), an ammonia injection grid pipe (2) is provided inside the placement groove, a sealing plate (3) is fixedly provided on the side of the ammonia injection grid pipe (2), a fixing ring (4) is fixedly provided on one side of the sealing plate (3), a first sealing gasket (5) is fixedly provided on the side of the fixing ring (4), a sealing seat (6) is provided on the side of the first sealing gasket (5), a sealing ring (7) is fixedly provided on the side of the sealing plate (3), a second sealing gasket (8) is fixedly provided on the inner side of the sealing ring (7), the inner side of the second sealing gasket (8) is in contact with the side of the sealing seat (6), and two connection boxes (9) are fixedly provided on the side of the ammonia injection grid pipe (2) The two connection boxes (9) are each provided with a push rod (10) inside, and a return spring (11) is provided at one end of the two push rods (10). The sides of the two push rods (10) are each fixedly provided with a pressure plate (12), and the sides of the two pressure plates (12) are each fixedly provided with a limit block (13). The sides of the sealing seat (6) are each fixedly provided with two limit seats (14), and one side of the two limit seats (14) is provided with a movable groove, and the insides of the two movable grooves are respectively fitted with the sides of the two pressure plates (12). The insides of the two limit seats (14) are each provided with a limit groove, and the sides of the two limit blocks (13) are respectively fitted with the insides of the two limit grooves.

2. The ammonia injection grid for an SCR denitration system according to claim 1, characterized in that: One side of the sealing seat (6) is fixedly connected to the side of the smoke pipe (1), and a sealing groove is provided inside the sealing seat (6), and the inside of the sealing groove is in contact with the side of the first sealing gasket (5).

3. The ammonia injection grid for an SCR denitration system according to claim 1, characterized in that: A fixing hole is provided inside the fixing ring (4), and the inside of the fixing hole is fixedly connected to the side surface of the ammonia injection grid pipe (2).

4. The ammonia injection grid for an SCR denitration system according to claim 1, characterized in that: One side of the two return springs (11) is fixedly connected to one end of the two push rods (10), and the other side of the two return springs (11) is fixedly connected to the inside of the two connection boxes (9).

5. The ammonia injection grid for an SCR denitration system according to claim 1, characterized in that: The other ends of the two push rods (10) are each provided with a pressing pad (15), and one side of the two pressing pads (15) is fixedly connected to the other ends of the two push rods (10) respectively.

6. The ammonia injection grid for an SCR denitration system according to claim 1, characterized in that: A movable groove is provided on one side of the two connection boxes (9), and the interiors of the two movable grooves are respectively fitted with the side surfaces of the two pressing plates (12).

7. The ammonia injection grid for an SCR denitration system according to claim 1, characterized in that: A fixing seat (16) is fixedly provided inside the smoke pipe (1), a mounting groove is provided inside the fixing seat (16), and the inside of the mounting groove fits with the side surface of the ammonia injection grid pipe (2).

Images