Thermal power plant flue gas ammonia escape on-line monitoring device

Abstract

The utility model relates to the technical field of ammonia escape online monitoring, and discloses a thermal power plant flue gas ammonia escape online monitoring device, one end of a monitoring pipeline is connected with a filter box, one side of the filter box is provided with a connector, and the upper surface of the filter box is clamped with a box plate; a first filter screen and a second filter screen are arranged on the lower surface of the box plate from left to right; a placing plate is arranged below the bottom plate, connecting plates are symmetrically arranged on the end face of the lower surface of the placing plate, and moving wheels are symmetrically arranged on the lower surfaces of the connecting plates. A first filter screen and a second filter screen are arranged in the filter box, so that gas entering the filter box can be subjected to double filtration treatment, and meanwhile, when the filter box is disassembled, only a box plate needs to be moved upwards, that is, a positioning pin is moved out of a positioning hole; furthermore, the first filter screen and the second filter screen can be taken out from the interior of the filter box to be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia escape online monitoring, in particular to an online monitoring device for ammonia escape from flue gas in a thermal power plant. Background Art

[0002] Ammonia in the flue gas of thermal power plants mainly comes from ammonia that is not completely reacted during the ammonia-based denitrification process, and ammonia generated by the conversion of ammonia elements contained in coal at high temperatures. The presence of ammonia in flue gas has a certain impact on the environment and power plant operation. The presence of ammonia that does not participate in the reaction in the flue gas at the outlet of the denitrification reaction tower is called ammonia escape. The purpose of online monitoring of ammonia escape is to prevent excessive injection of ammonia, which will cause economic waste to customers and prevent secondary pollution caused by excessive emissions of ammonia.

[0003] A Chinese patent discloses an online monitoring device for ammonia escape from flue gas in a thermal power plant (authorization announcement number CN217237975U). This patented technology can efficiently filter impurities in smoke by setting a filtering mechanism and two filters with different mesh apertures. The connecting cylinder can then be disassembled by rotating the connecting cylinder by a fixed frame, thereby facilitating replacement or cleaning of the filter, avoiding filter blockage, and enhancing the filtering effect of the device on smoke.

[0004] However, there are still some shortcomings in this patent. Although this patent can filter impurities in smoke, it can be seen from the drawings of this patent that when removing the filter screen, the connection tube needs to be removed to clean the filter screen. This disassembly method is inefficient and affects the subsequent ammonia escape monitoring work. Therefore, those skilled in the art provide an online monitoring device for ammonia escape in flue gas of a thermal power plant to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to provide an online monitoring device for ammonia escape from flue gas in a thermal power plant to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An online monitoring device for flue gas ammonia escape in a thermal power plant, comprising a bottom plate, a high-temperature sampling pump arranged on the upper surface of the bottom plate, and a monitoring pipeline installed on one side of the high-temperature sampling pump, one end of the monitoring pipeline is connected to a filter box, one side of the filter box is installed with a connector, and the upper surface of the filter box is clamped with a box plate, and the lower surface of the box plate is respectively provided with a first filter screen and a second filter screen from left to right;

[0008] A placing plate is arranged below the bottom plate, a connecting plate is symmetrically arranged at the end surface of the lower surface of the placing plate, and moving wheels are symmetrically arranged on the lower surface of the connecting plate.

[0009] As a further solution of the utility model: the upper surface of the placement plate is symmetrically provided with grooves, the interior of the grooves is symmetrically provided with electric telescopic rods, and the telescopic ends of the electric telescopic rods are provided with positioning plates on the lower surface of the bottom plate.

[0010] As a further solution of the utility model: a clamping plate is symmetrically arranged on the lower surface of the bottom plate, and a positioning groove which is engaged with the clamping plate is opened on the upper surface of the positioning plate.

[0011] As a further solution of the utility model: two electric telescopic rods are symmetrically arranged inside the groove, and the positioning plate is arranged inside the groove.

[0012] As a further solution of the utility model: positioning pins are symmetrically arranged on the lower surface of the box plate, and positioning holes that engage with the positioning pins are opened on the upper surface of the filter box.

[0013] As a further solution of the utility model: a sealing gasket is also provided on the lower surface of the box plate, and the material of the sealing gasket is rubber.

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

[0015] 1. An online monitoring device for ammonia escape from flue gas in a thermal power plant. A first filter screen and a second filter screen are arranged inside a filter box, so that the gas entering the filter box can be double-filtered. At the same time, when disassembling, it is only necessary to move the box plate upward, that is, the positioning pin is moved out from the inside of the positioning hole, and then the first filter screen and the second filter screen can be taken out from the inside of the filter box for replacement. The arrangement has a simple structure and is easy to operate, and can achieve the purpose of double filtering the flue gas in the thermal power plant, so as to facilitate the subsequent monitoring of ammonia escape.

[0016] 2. An online monitoring device for ammonia escape from flue gas in a thermal power plant. The device can be moved to a monitoring position by moving wheels symmetrically arranged on the lower surface of a connecting plate, and the positioning plate can be moved inside the groove by starting the electric telescopic rods symmetrically arranged inside the groove, thereby adjusting the position of the bottom plate, so as to facilitate the connection of the connector to the ammonia emission pipeline to facilitate the monitoring of ammonia escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an online monitoring device for flue gas ammonia escape in a thermal power plant;

[0018] Figure 2 This is a structural schematic diagram of a positioning plate in an online monitoring device for flue gas ammonia escape in a thermal power plant;

[0019] Figure 3The present invention is a schematic diagram of the structure of the first filter in an online monitoring device for flue gas ammonia escape in a thermal power plant.

[0020] In the figure: 1. high-temperature sampling pump; 11. monitoring pipeline; 2. bottom plate; 3. placement plate; 31. connecting plate; 311. moving wheel; 32. positioning plate; 321. electric telescopic rod; 322. positioning groove; 323. groove; 4. filter box; 41. connecting head; 42. box plate; 43. first filter screen; 44. second filter screen; 45. positioning pin; 451. positioning hole; 46. sealing gasket. DETAILED DESCRIPTION

[0021] See also Figures 1 to 3 In an embodiment of the utility model, an online monitoring device for ammonia escape from flue gas in a thermal power plant includes a base plate 2, a high-temperature sampling pump 1 arranged on the upper surface of the base plate 2, and a monitoring pipe 11 installed on one side of the high-temperature sampling pump 1, one end of the monitoring pipe 11 is connected to a filter box 4, a connector 41 is installed on one side of the filter box 4, and a box plate 42 is clamped on the upper surface of the filter box 4, and a first filter screen 43 and a second filter screen 44 are respectively arranged on the lower surface of the box plate 42 from left to right. This arrangement utilizes the first filter screen 43 and the second filter screen 44 to perform double filtering treatment on smoke, and the first filter screen 43 and the second filter screen 44 can be easily disassembled through the box plate 42 to facilitate maintenance thereof.

[0022] A placement plate 3 is provided below the base plate 2, and a connecting plate 31 is symmetrically provided at the end surface of the lower surface of the placement plate 3, and moving wheels 311 are symmetrically provided on the lower surface of the connecting plate 31. This arrangement utilizes the moving wheels 311 to facilitate moving the device to the monitoring position, and at the same time, the height of the base plate 2 is adjusted to connect the connector 41 to the ammonia exhaust pipeline.

[0023] exist Figure 2 In the middle: the upper surface of the placement plate 3 is symmetrically provided with grooves 323, and the interior of the grooves 323 is symmetrically provided with electric telescopic rods 321, and the telescopic end of the electric telescopic rod 321 is provided with a positioning plate 32 on the lower surface of the base plate 2, and the lower surface of the base plate 2 is symmetrically provided with a card plate, and the upper surface of the positioning plate 32 is provided with a positioning groove 322 that engages with the card plate, and the electric telescopic rod 321 is symmetrically provided with two positioning plates 321 inside the groove 323, and the positioning plate 32 is arranged inside the groove 323. This setting utilizes the card plate to be embedded in the interior of the positioning groove 322 to achieve the purpose of installing the base plate 2 and the positioning plate 32, and at the same time, the electric telescopic rod 321 can be used to move the positioning plate 32 inside the groove 323, so as to adjust the position of the connecting head 41.

[0024] exist Figure 3Middle: The lower surface of the box plate 42 is symmetrically provided with positioning pins 45, and the upper surface of the filter box 4 is provided with positioning holes 451 that engage with the positioning pins 45. This arrangement utilizes the positioning pins 45 to embed into the inside of the positioning holes 451 to achieve the purpose of positioning and installing the filter box 4 and the box plate 42.

[0025] exist Figure 3 Middle: A sealing gasket 46 is also provided on the lower surface of the box plate 42. The sealing gasket 46 is made of rubber. The provision of the sealing gasket 46 can improve the sealing performance of the connection between the box plate 42 and the filter box 4.

[0026] The working principle of the utility model is as follows: when the online monitoring device for ammonia escape from flue gas in a thermal power plant is used, the device is first moved to the monitoring position and locked by the moving wheel 311. After locking, the electric telescopic rod 321 symmetrically arranged inside the groove 323 is started to work, so that the positioning plate 32 moves inside the groove 323, and then the position of the bottom plate 2 can be adjusted, so that the connector 41 is matched with the ammonia emission pipeline to facilitate the monitoring of ammonia escape. The ammonia emission pipe can be connected to the monitoring pipeline 11 through the connector 41. When the smoke dust with ammonia passes through the filter box 4 through the high-temperature sampling pump 1, it can pass through the first filter screen 43 and the second filter screen 44 inside the filter box 4, so that the gas entering the filter box 4 can be double filtered. At the same time, when disassembling, it is only necessary to move the box plate 42 upward, that is, the positioning pin 45 is moved out from the inside of the positioning hole 451, so that the first filter screen 43 and the second filter screen 44 can be taken out from the inside of the filter box 4 to achieve the purpose of replacement.

[0027] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An online monitoring device for flue gas ammonia escape in a thermal power plant, comprising a base plate (2), a high-temperature sampling pump (1) arranged on the upper surface of the base plate (2), and a monitoring pipeline (11) installed on one side of the high-temperature sampling pump (1), characterized in that: One end of the monitoring pipe (11) is connected to a filter box (4), one side of the filter box (4) is provided with a connector (41), and the upper surface of the filter box (4) is clamped with a box plate (42), and the lower surface of the box plate (42) is provided with a first filter screen (43) and a second filter screen (44) from left to right respectively; A placement plate (3) is arranged below the bottom plate (2), a connection plate (31) is symmetrically arranged at the end surface of the lower surface of the placement plate (3), and moving wheels (311) are symmetrically arranged on the lower surface of the connection plate (31).

2. The on-line monitoring device for flue gas ammonia escape in a thermal power plant according to claim 1, characterized in that: The upper surface of the placement plate (3) is symmetrically provided with grooves (323), the interior of the grooves (323) is symmetrically provided with electric telescopic rods (321), and the telescopic ends of the electric telescopic rods (321) are provided with positioning plates (32) on the lower surface of the bottom plate (2).

3. The on-line monitoring device for flue gas ammonia escape in a thermal power plant according to claim 2, characterized in that: A clamping plate is symmetrically arranged on the lower surface of the bottom plate (2), and a positioning groove (322) that is mutually engaged with the clamping plate is provided on the upper surface of the positioning plate (32).

4. The on-line monitoring device for flue gas ammonia escape in a thermal power plant according to claim 2, characterized in that: Two electric telescopic rods (321) are symmetrically arranged inside the groove (323), and the positioning plate (32) is arranged inside the groove (323).

5. The on-line monitoring device for flue gas ammonia escape in a thermal power plant according to claim 1, characterized in that: Positioning pins (45) are symmetrically arranged on the lower surface of the box plate (42), and positioning holes (451) that engage with the positioning pins (45) are opened on the upper surface of the filter box (4).

6. The on-line monitoring device for flue gas ammonia escape in a thermal power plant according to claim 1, characterized in that: A sealing gasket (46) is also provided on the lower surface of the box plate (42), and the sealing gasket (46) is made of rubber.

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