Anti-blocking ammonia spraying grid

Abstract

The utility model provides an anti-blocking ammonia spraying grid, and belongs to the technical field of ammonia spraying grids. The anti-blocking ammonia spraying grid comprises an ammonia spraying grid. The ammonia spraying grid comprises an ammonia inlet pipe, an ammonia conveying pipe, an ammonia spraying pipe, an elastic part and a top cover, one end of the ammonia conveying pipe is communicated with the ammonia inlet pipe, the bottom end of the ammonia spraying pipe is fixedly communicated with the ammonia conveying pipe, the bottom end of the elastic part is connected with the ammonia spraying pipe, and during use, ammonia in the ammonia spraying pipe can push the top cover upwards, so that the ammonia spraying pipe can spray ammonia in the ammonia spraying pipe. The top cover can stretch the elastic piece, then ammonia gas can be sprayed out from the top end of the ammonia spraying pipe, when ammonia gas is stopped being conveyed into the ammonia inlet pipe, the pressure in the ammonia spraying pipe is reduced, the top cover can move downwards under the action of the elastic piece, then the top cover can cover the ammonia spraying pipe, and then the top cover can block the ammonia spraying pipe; and therefore, collapsed and falling dust can be prevented from entering the ammonia spraying pipe, the ammonia spraying pipe is not prone to being blocked, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ammonia injection grid, in particular to a kind of anti-blocking type ammonia injection grid. BACKGROUND

[0002] In the denitration treatment of coal-fired flue gas, ammonia and flue gas need to be transported into the inside of denitration reaction equipment, and the ammonia injection grid is usually installed in the flue inlet of the denitration reaction equipment, ammonia is injected into the flue of the denitration reaction equipment by the ammonia injection grid, so that ammonia and flue gas can be mixed and enter the inside of the denitration reaction equipment. The installation of the ammonia injection grid is usually upward, so as to ensure the same direction as the flue gas flow. However, the structure of the ammonia injection pipe of the traditional ammonia injection grid is relatively simple, and the ammonia injection pipe lacks certain ash and blockage prevention structure. When the accumulated ash inside the flue or the denitration reaction equipment collapses and falls, the accumulated ash will fall into the inside of the ammonia injection pipe, which may easily cause the blockage of the ammonia injection pipe, and the practicability is relatively low. CONTENT OF THE INVENTION

[0003] In order to make up for the above shortcomings, the present application provides an anti-blocking type ammonia injection grid, which aims to improve the problem that the ammonia injection pipe is easily blocked and the practicability is relatively low.

[0004] The present application provides an anti-blocking type ammonia injection grid, which comprises an ammonia injection grid.

[0005] The ammonia injection grid comprises an ammonia inlet pipe, an ammonia conveying pipe, an ammonia injection pipe, an elastic member and a top cover. One end of the ammonia conveying pipe is in communication with the ammonia inlet pipe. The bottom end of the ammonia injection pipe is fixedly communicated with the ammonia conveying pipe. The bottom end of the elastic member is connected with the ammonia injection pipe. The top cover is conical. The top cover is slidably arranged on the top end of the ammonia injection pipe. The lower surface of the top cover is provided with a positioning rod, which is slidably inserted into the inner wall of the ammonia injection pipe. The lower surface of the top cover is fixedly connected with the top end of the elastic member.

[0006] In a specific embodiment, the pipe body of the ammonia inlet pipe is provided with a first valve. The pipe body of the ammonia inlet pipe is fixedly communicated with an air pipe. The pipe body of the air pipe is communicated with a second valve.

[0007] In a specific embodiment, the ammonia conveying pipe is provided with a plurality of ammonia conveying pipes. The plurality of ammonia conveying pipes are uniformly arranged. One end of each of the plurality of ammonia conveying pipes is fixedly communicated with the ammonia inlet pipe.

[0008] In a specific embodiment, one end of each of the plurality of ammonia conveying pipes is communicated with a communication pipe. The plurality of ammonia conveying pipes are communicated with each other through the communication pipe.

[0009] In a specific embodiment, the pipe body of the communication pipe is provided with an L-shaped fixing frame, the frame body of the L-shaped fixing frame is provided with fixing holes, and the fixing holes are evenly arranged.

[0010] In a specific embodiment, the ammonia injection pipe is provided with a plurality of ammonia injection pipes, the pipe body of the ammonia injection pipe is fixedly connected with a plurality of ammonia injection pipes, and the ammonia injection pipes are evenly arranged.

[0011] In a specific embodiment, the inside of the pipe wall of the ammonia injection pipe is provided with a connecting groove, the connecting groove is provided with two connecting grooves, the elastic member is connected to the inside of the connecting groove, and the bottom end of the elastic member is fixedly connected to the bottom wall of the connecting groove.

[0012] In a specific embodiment, the top end of the ammonia injection pipe is provided with the top cover, the lower surface of the top cover is provided with two positioning rods, the two positioning rods are symmetrically arranged, the two positioning rods are slidably inserted into the inside of the pipe wall of the ammonia injection pipe, and the lower surface of the top cover is fixedly connected to the top end of the two elastic members.

[0013] In a specific embodiment, the inside of the pipe wall of the ammonia injection pipe is provided with a positioning groove, the positioning groove is provided with two positioning grooves, the two positioning grooves are symmetrically arranged, the rod body of the two positioning rods is slidably inserted into the inside of the two positioning grooves, the bottom end of the two positioning rods is provided with a limiting plate, and the limiting plate is slidably arranged in the inside of the positioning groove.

[0014] In a specific embodiment, the lower surface of the top cover is provided with a dispersing block, the dispersing block is slidably inserted into the inside of the ammonia injection pipe, and the dispersing block is provided in an inverted conical shape.

[0015] The utility model discloses a kind of advantages, which is a kind of anti-blocking ammonia injection grid, when using, ammonia gas in the ammonia injection pipe will push top cover upwards, top cover will stretch elastic member, and then ammonia gas can be sprayed from the top end of ammonia injection pipe, when stopping to deliver ammonia gas to the inside of ammonia injection pipe, the pressure in the ammonia injection pipe reduces, and top cover will move downwards under the action of elastic member, and then top cover can be covered above ammonia injection pipe, and then top cover can be blocked to ammonia injection pipe, and then prevent dust falling from collapse from entering the inside of ammonia injection pipe, so that ammonia injection pipe is not easy to block, and it is high in practicality. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings below only show some of the embodiments of the present application, and should not be considered as limiting the scope. For those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 is a first perspective view of the anti-blocking ammonia injection grid provided by the embodiments of the present application;

[0018] Figure 2 is a second perspective view of the anti-blocking ammonia injection grid provided by the embodiments of the present application;

[0019] Figure 3 is a schematic view of the structure of the ammonia injection pipe and the top cover provided by the embodiments of the present application;

[0020] Figure 4 is a schematic view of the structure of the connecting groove and the limiting plate provided by the embodiments of the present application;

[0021] Figure 5 is a schematic view of the structure of the top cover provided by the embodiments of the present application.

[0022] In the figure, 100 is the ammonia injection grid, 110 is the ammonia inlet pipe, 111 is the first valve, 120 is the ammonia conveying pipe, 130 is the ammonia injection pipe, 131 is the connecting groove, 132 is the positioning groove, 140 is the elastic member, 150 is the top cover, 151 is the positioning rod, 1511 is the limiting plate, 152 is the dispersing block, 160 is the air pipe, 161 is the second valve, 170 is the communication pipe, 171 is the L-shaped fixing bracket, and 172 is the fixing hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described below in combination with the drawings in the embodiments of the present application.

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Please refer to Figure 1 The present application provides an anti-blocking ammonia injection grid, which comprises an ammonia injection grid 100.

[0026] Please refer to Figures 1-4The ammonia spraying grid 100 comprises an ammonia inlet pipe 110, an ammonia conveying pipe 120, an ammonia spraying pipe 130, an elastic member 140 and a top cover 150. The pipe body of the ammonia inlet pipe 110 is provided with a first valve 111. One end of the ammonia inlet pipe 110 is connected with a pipe line for providing ammonia gas. The pipe body of the ammonia inlet pipe 110 is fixedly connected with an air pipe 160. The air pipe 160 is connected with a pipe line for providing air. The pipe body of the air pipe 160 is connected with a second valve 161.

[0027] In the embodiment, one end of the ammonia conveying pipe 120 is connected with the ammonia inlet pipe 110. A plurality of ammonia conveying pipes 120 are arranged uniformly. One end of each of the plurality of ammonia conveying pipes 120 is fixedly connected with the ammonia inlet pipe 110. The other end of each of the plurality of ammonia conveying pipes 120 is connected with a connecting pipe 170. The plurality of ammonia conveying pipes 120 are connected with each other through the connecting pipe 170. The pipe body of the connecting pipe 170 is provided with an L-shaped fixing bracket 171. The bracket body of the L-shaped fixing bracket 171 is provided with a plurality of fixing holes 172 arranged uniformly.

[0028] In the embodiment, the bottom end of the ammonia spraying pipe 130 is fixedly connected with the ammonia conveying pipe 120. A plurality of ammonia spraying pipes 130 are arranged uniformly.

[0029] In the embodiment, the bottom end of the elastic member 140 is connected with the ammonia spraying pipe 130. A connecting groove 131 is formed in the inner wall of each of the plurality of ammonia spraying pipes 130. Two connecting grooves 131 are formed in each of the plurality of ammonia spraying pipes 130. The inner wall of each of the two connecting grooves 131 is connected with an elastic member 140. The bottom end of each of the two elastic members 140 is fixedly connected with the bottom wall of the connecting groove 131. The two elastic members 140 are springs.

[0030] In the embodiment, the top cover 150 is conical. The top cover 150 is arranged on the top end of the ammonia spraying pipe 130. The lower surface of the top cover 150 is provided with a positioning rod 151. The positioning rod 151 is slidably inserted into the inner wall of the ammonia spraying pipe 130. The top end of each of the plurality of ammonia spraying pipes 130 is arranged with a top cover 150. The lower surface of each of the plurality of top covers 150 is provided with two positioning rods 151 arranged symmetrically. The inner wall of the ammonia spraying pipe 130 is provided with a positioning groove 132. Two positioning grooves 132 are formed in the inner wall of the ammonia spraying pipe 130. The rod body of each of the two positioning rods 151 is slidably inserted into the inner wall of the ammonia spraying pipe 130. The bottom end of each of the two positioning rods 151 is provided with a limiting plate 1511. The limiting plate 1511 is slidably arranged in the positioning groove 132. The limiting plate 1511 can prevent the positioning rod 151 from being separated from the inner wall of the ammonia spraying pipe 130.

[0031] In the embodiment, the lower surface of the top cover 150 is fixedly connected with the top end of the elastic member 140, the lower surface of the top cover 150 is fixedly connected with the top end of the two elastic members 140, the lower surface of the plurality of top covers 150 is provided with a dispersion block 152, the dispersion block 152 is slidingly inserted into the inside of the ammonia injection pipe 130, and the dispersion block 152 is provided in an inverted conical shape.

[0032] In the application, the first valve 111 can be closed, the second valve 161 can be opened, the pipeline for conveying air from the outside to the inside of the air pipe 160, the air enters the inside of the ammonia injection pipe 130 through the ammonia inlet pipe 110 and the ammonia conveying pipe 120, as the pressure in the inside of the ammonia injection pipe 130 increases, the air pushes the top cover 150 upwards, the top cover 150 stretches the elastic member 140 upwards, and then the air can be discharged through the ammonia injection pipe 130, and then the air can clean the inside of the ammonia inlet pipe 110, the ammonia conveying pipe 120 and the ammonia injection pipe 130.

[0033] Specifically, the working principle of the anti-blocking ammonia injection grid: when in use, the ammonia injection grid 100 can be fixed in the flue inlet of the denitration reaction equipment, the ammonia inlet pipe 110 is fixedly penetrated in the flue, the first valve 111 and the second valve 161 are located outside the flue, the second valve 161 is closed, the first valve 111 is opened, ammonia gas can enter the inside of the plurality of ammonia conveying pipes 120 through the ammonia inlet pipe 110, the ammonia gas enters the inside of the ammonia injection pipe 130 through the ammonia conveying pipe 120, as the ammonia gas is continuously input, the ammonia gas pushes the top cover 150 upwards, the top cover 150 stretches the elastic member 140, and then the ammonia gas can be sprayed from the top end of the ammonia injection pipe 130, and when the ammonia gas passes through the dispersion block 152, the dispersion block 152 can disperse the ammonia gas, and then the ammonia gas can be dispersed into the flue of the denitration reaction equipment, when the ammonia gas is stopped from being conveyed into the inside of the ammonia inlet pipe 110, the pressure in the inside of the ammonia injection pipe 130 decreases, the top cover 150 moves downwards under the action of the elastic member 140, and then the top cover 150 covers the top of the ammonia injection pipe 130, and then the top cover 150 can block the ammonia injection pipe 130, and then the falling dust can be prevented from entering the inside of the ammonia injection pipe 130, and then the ammonia injection pipe 130 is not easy to be blocked, and the practicability is high.

[0034] It should be noted that the specific model and specification of the elastic member 140, the first valve 111 and the second valve 161 need to be selected and determined according to the actual specification of the device, and the specific selection and calculation method adopts the existing technology in the art, and therefore will not be described in detail.

[0035] The above merely provides an example of the present application, and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0036] The above merely provides an example of the present application, and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0036] The above merely provides an example of the present application, and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

Claims

1. A clog-resistant ammonia injection grille, characterized in that, include An ammonia injection grid (100) includes an ammonia inlet pipe (110), an ammonia delivery pipe (120), an ammonia injection pipe (130), an elastic element (140), and a top cover (150). One end of the ammonia delivery pipe (120) is connected to the ammonia inlet pipe (110), the bottom end of the ammonia injection pipe (130) is fixedly connected to the ammonia delivery pipe (120), the bottom end of the elastic element (140) is connected to the ammonia injection pipe (130), the top cover (150) is conical, the top cover (150) is slidably mounted on the top end of the ammonia injection pipe (130), a positioning rod (151) is provided on the lower surface of the top cover (150), the positioning rod (151) is slidably inserted into the inside of the pipe wall of the ammonia injection pipe (130), and the lower surface of the top cover (150) is fixedly connected to the top end of the elastic element (140).

2. The anti-clogging ammonia injection grille according to claim 1, characterized in that, The ammonia inlet pipe (110) is equipped with a first valve (111), and the ammonia inlet pipe (110) is fixedly connected to an air pipe (160), and the air pipe (160) is connected to a second valve (161).

3. The anti-clogging ammonia injection grille according to claim 1, characterized in that, A plurality of ammonia delivery pipes (120) are provided, and the plurality of ammonia delivery pipes (120) are evenly arranged, and one end of each plurality of ammonia delivery pipes (120) is fixedly connected to the ammonia inlet pipe (110).

4. The anti-clogging ammonia injection grille according to claim 1, characterized in that, A connecting pipe (170) is connected to one end of each of the ammonia delivery pipes (120) away from the ammonia inlet pipe (110), and the ammonia delivery pipes (120) are interconnected through the connecting pipe (170).

5. The anti-clogging ammonia injection grille according to claim 4, characterized in that, The connecting pipe (170) is provided with an L-shaped fixing bracket (171). The L-shaped fixing bracket (171) has fixing holes (172) on its frame. Several fixing holes (172) are provided and are evenly arranged.

6. The anti-clogging ammonia injection grille according to claim 3, characterized in that, The ammonia injection pipe (130) is provided in a plurality of manner, and the pipe bodies of the plurality of ammonia delivery pipes (120) are all fixedly connected to the plurality of ammonia injection pipes (130), and the plurality of ammonia injection pipes (130) are evenly arranged.

7. The anti-clogging ammonia injection grille according to claim 6, characterized in that, A connecting groove (131) is provided inside the wall of each of the ammonia injection pipes (130). There are two connecting grooves (131). The elastic element (140) is connected inside the two connecting grooves (131). The bottom end of the elastic element (140) is fixedly connected to the bottom wall of the connecting groove (131).

8. The anti-clogging ammonia injection grille according to claim 7, characterized in that, Each of the ammonia injection pipes (130) has a top cover (150) that is slidably covered at its top. Each of the top covers (150) has two positioning rods (151) on its lower surface. The two positioning rods (151) are symmetrically arranged and are slidably inserted into the inside of the pipe wall of the ammonia injection pipe (130). The lower surface of the top cover (150) is fixedly connected to the top of the two elastic elements (140).

9. The anti-clogging ammonia injection grille according to claim 7, characterized in that, The ammonia injection pipe (130) has a positioning groove (132) inside its pipe wall. There are two positioning grooves (132) and they are arranged symmetrically. The rods of the two positioning rods (151) are slidably inserted into the two positioning grooves (132). The bottom end of each of the two positioning rods (151) is provided with a limiting plate (1511), which slides inside the positioning groove (132).

10. The anti-clogging ammonia injection grille according to claim 1, characterized in that, A dispersion block (152) is provided on the lower surface of several of the top covers (150). The dispersion block (152) is slidably inserted into the interior of the ammonia spray pipe (130). The dispersion block (152) is configured as an inverted cone shape.

Images