Boiler water-cooled wall cleaning device

Abstract

This utility model discloses a boiler water-cooled wall cleaning device, which is installed on the water-cooled wall. The water-cooled wall includes the inner wall of the boiler and a number of water-cooled pipes distributed on the inner wall of the boiler. The cleaning device includes an air pipe, a connecting pipe, and an air cap. The air pipe is used to transport compressed air. The connecting pipe is embedded in the inner wall of the boiler, and one end of the connecting pipe is connected to the air pipe. The air cap includes an installation plate, a partition, and a guide shroud. The installation plate, the partition, and the guide shroud are all set on the side of the inner wall of the boiler with water-cooled pipes. A number of partitions are provided, and the partitions are distributed in a vortex shape between the guide shroud and the installation plate. The installation plate is connected to the guide shroud through the partitions. An air supply space is defined between the guide shroud and the installation plate. Two adjacent partitions define an air blowing channel. The installation plate is connected to the other end of the connecting pipe. The connecting pipe, the air supply space, and the air blowing channel are connected in sequence. The air blowing channel is used to blow out airflow to clean the dust on the water-cooled pipes.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler cleaning devices, and in particular to a boiler water-cooled wall cleaning device. Background Technology

[0002] Boilers are commonly used in power plants. The inner wall of a boiler is generally designed as a water-cooled wall, which consists of the inner wall of the boiler and several water-cooled pipes distributed on the inner wall of the boiler.

[0003] When a boiler is in operation, it will produce a large amount of dust, slag, coal ash and other substances. The dust, slag and coal ash attached to the upper part of the water-cooled tubes of the water-cooled wall cannot fall off freely and will remain on the water-cooled tubes. Over time, these dust, slag and coal ash and other substances will cause corrosion, rust or perforation of the water-cooled tubes, affecting their use and causing safety hazards. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a boiler water-cooled wall cleaning device capable of removing dust, slag, coal ash, and other substances from the boiler water-cooled wall.

[0005] According to an embodiment of the present invention, a boiler water-cooled wall cleaning device is installed on a water-cooled wall, which includes an inner wall of a boiler and a plurality of water-cooled pipes distributed on the inner wall of the boiler. The cleaning device includes an air pipe, a connecting pipe, and an air cap. The air pipe is used to transport compressed air. The connecting pipe is embedded in the inner wall of the boiler, and one end of the connecting pipe is connected to the air pipe. The air cap includes an mounting plate, a partition, and a guide shroud. The mounting plate, the partition, and the guide shroud are all disposed on the side of the inner wall of the boiler with water-cooled pipes. A plurality of partitions are provided, and the partitions are distributed in a vortex shape between the guide shroud and the mounting plate. The mounting plate is connected to the guide shroud through the partitions. An air supply space is defined between the guide shroud and the mounting plate. Two adjacent partitions define an air blowing channel. The mounting plate is connected to the other end of the connecting pipe. The connecting pipe, the air supply space, and the air blowing channel are connected in sequence. The air blowing channel is used to blow out airflow to clean the dust on the water-cooled pipes.

[0006] It has at least the following beneficial effects: The air caps are distributed on the water-cooled walls, and multiple air-blowing channels are defined by baffles. The air blown from the air caps can cover a larger area of ​​the water-cooled walls, effectively stripping and blowing away dust, slag, coal ash, and other substances adhering to the upper part of the water-cooled tubes. This avoids the risk of pipe corrosion, rust, or perforation caused by long-term accumulation. At the same time, the airflow is evenly diffused through the air-blowing channels formed by the guide shroud and the mounting plate, improving the cleaning coverage area and ultimately extending the service life of the water-cooled walls and reducing safety hazards. In addition, the baffles are distributed in a vortex shape between the guide shroud and the mounting plate, which allows the air-blowing channels to blow air in an inclined direction, so that even the space blocked by the baffles can be blown by the air, making the dust removal more complete and thorough.

[0007] According to some embodiments of the present invention, the flow guide includes a connecting ring, a flow guide ring, and a baffle plate. The baffle plate, the flow guide ring, and the connecting ring are coaxially arranged. The baffle plate is located closer to the mounting plate than the connecting ring. The diameter of the connecting ring is larger than the diameter of the baffle plate. The connecting ring is connected to the baffle plate through the flow guide ring. The flow guide ring has a flow guide cone surface with the cone apex facing the mounting plate. The flow guide cone surface is used to guide the airflow out from the air blowing channel.

[0008] According to some embodiments of this utility model, the baffle plate is provided with several pressure relief holes.

[0009] According to some embodiments of this utility model, a plurality of air caps are provided, and the plurality of air caps are evenly distributed on the water-cooled wall, with connecting pipes corresponding to the air caps one by one.

[0010] According to some embodiments of the present invention, a clamping fixture is included, and one end of the connecting tube and the air tube are connected by the clamping fixture.

[0011] According to some embodiments of this utility model, a solenoid valve is provided on the air pipe.

[0012] According to some embodiments of this utility model, a bellows is included, one end of which is connected to the air outlet of the solenoid valve, and the other end of which is connected to one end of the connecting pipe.

[0013] According to some embodiments of the present invention, a tapered converging tube is included, the large end of which is connected to the other end of a bellows via a flange, and the small end of which is connected to one end of a connecting tube via a clamping fixture.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the boiler water-cooled wall cleaning device installed on the water-cooled wall according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of a boiler water-cooled wall cleaning device installed on a single water-cooled wall according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the boiler water-cooled wall cleaning device according to an embodiment of the present utility model; Figure 4 for Figure 3 The diagram shows the structure of the air cap of the boiler water-cooled wall cleaning device; Figure 5 for Figure 4 An exploded view of the hood is shown; Figure 6 for Figure 4 A half-sectional view of the hood is shown; Figure 7 This is a schematic diagram of the partition distribution of the boiler water-cooled wall cleaning device according to an embodiment of the present invention.

[0016] Figure label: Trachea 100, solenoid valve 110; Connecting pipe 200; 300 wind cap, 310 mounting plate, 320 partition plate, 330 guide shroud, 331 connecting ring, 332 guide ring, 333 baffle plate, 333 pressure relief hole, 333a air delivery space, 340 air blowing channel; Clamping fixture 400; 500 corrugated pipe; 600mm tapered converging tube; Water-cooled wall 700, boiler inner wall 710, water-cooled tube 720. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] Reference Figures 1 to 7This utility model discloses a boiler water-cooled wall cleaning device, installed on a water-cooled wall 700. The water-cooled wall 700 includes a boiler inner wall 710 and a plurality of water-cooled pipes 720 distributed on the boiler inner wall 710. The cleaning device includes an air pipe 100, a connecting pipe 200, and an air cap 300. The air pipe 100 is used to transport compressed air; the connecting pipe 200 is embedded in the boiler inner wall 710, and one end of the connecting pipe 200 is connected to the air pipe 100; the air cap 300 includes a mounting plate 310, a partition plate 320, and a guide shroud 330, all of which are disposed on the boiler inner wall 710. On one side of the water-cooled pipe 720, there are several partitions 320. The partitions 320 are distributed in a vortex shape between the guide shroud 330 and the mounting plate 310. The mounting plate 310 is connected to the guide shroud 330 through the partitions 320. The air delivery space 340 is defined between the guide shroud 330 and the mounting plate 310. Two adjacent partitions 320 define an air blowing channel 350. The mounting plate 310 is connected to the other end of the connecting pipe 200. The connecting pipe 200, the air delivery space 340 and the air blowing channel 350 are connected in sequence. The air blowing channel 350 is used to blow out airflow to clean the dust on the water-cooled pipe 720.

[0021] It has at least the following beneficial effects: The air caps 300 are distributed on the water-cooled wall 700, and the air caps 300 define multiple air blowing channels 350 through the baffles 320. The air blown out by the air caps 300 can cover a larger area of ​​the water-cooled wall 700, thereby effectively stripping and blowing away dust, slag, coal ash, and other substances attached to the upper part of the water-cooled pipe 720, avoiding the risk of pipe corrosion, rust, or perforation caused by long-term accumulation. At the same time, the air blowing channels 350 formed by the guide shroud 330 and the mounting plate 310 achieve uniform airflow diffusion, improve the cleaning coverage, and ultimately achieve the technical effect of extending the service life of the water-cooled wall and reducing safety hazards. In addition, the baffles 320 are distributed in a vortex shape between the guide shroud 330 and the mounting plate 310, which allows the air blowing channels 350 to blow air in an inclined direction, so that the space blocked by the baffles 320 can also be blown by the air, making the dust cleaning more complete and thorough.

[0022] In some embodiments, the vent cap 300 is made of high-temperature and corrosion-resistant materials to ensure the durability of the air outlet device and prevent corrosion; the air pipe 100 is supplied with air by a high-pressure blower, which is a high-frequency vortex blower to ensure the blower pressure; in addition, a PLC and a human-machine interface device are used to control the operation of the solenoid valve and the high-pressure blower to ensure the operating status of the equipment. The so-called human-machine interface device can be a computer with a display, and the electrical connection of each electrical control component is conventional technology.

[0023] The air cap 300 is connected to the connecting pipe 200 using a quick-connect method. A high-temperature one-way valve is used at the connection between the air cap 300 and the connecting pipe 200. The high-temperature one-way valve is used to ensure that the furnace temperature does not extend out along the connecting pipe 200 when the high-pressure blower is stopped or not in operation.

[0024] Reference Figure 6 The flow deflector 330 includes a connecting ring 331, a flow guide ring 332, and a baffle 333. The baffle 333, the flow guide ring 332, and the connecting ring 331 are coaxially arranged. The baffle 333 is located closer to the mounting plate 310 than the connecting ring 331. The diameter of the connecting ring 331 is larger than the diameter of the baffle 333. The connecting ring 331 is connected to the baffle 333 through the flow guide ring 332. The flow guide ring 332 has a flow guide cone surface with its cone apex facing the mounting plate 310. The flow guide cone surface is used to guide the airflow out of the blowing channel 350.

[0025] In some embodiments, the baffle 333 is provided with a plurality of pressure relief holes 333a. It is understood that the pressure relief holes 333a can both relieve pressure to reduce the impact of wind on the baffle 333 and blow out gas to clean the dust that falls into the groove formed by the connecting ring 331 and the baffle 333.

[0026] In some embodiments, a plurality of air caps 300 are provided, and the plurality of air caps 300 are evenly distributed on the water-cooled wall 700, with connecting pipes 200 corresponding to the air caps 300 one by one. It should be noted that multiple air caps 300 should be provided on the water-cooled wall 700 to ensure the coverage of the airflow and make cleaning more thorough.

[0027] In some embodiments, a clamping fixture 400 is included, through which one end of the connecting pipe 200 and the air pipe 100 are connected. It is understood that the clamping fixture 400 facilitates the installation of the connecting pipe 200 and the air pipe 100 and serves as an intermediate connector between the connecting pipe 200 and the air pipe 100.

[0028] In some embodiments, a solenoid valve 110 is provided on the air pipe 100. It is understood that the solenoid valve 110 is used to control the air volume.

[0029] In some embodiments, a bellows 500 is included, one end of which is connected to the air outlet of the solenoid valve 110, and the other end of which is connected to one end of the connecting pipe 200. It should be noted that the bellows 500 serves as a flexible connection to prevent the air pipe 100 from causing excessive rigid interference to the water-cooled wall 700.

[0030] In some embodiments, a tapered converging tube 600 is included. The large end of the tapered converging tube 600 is connected to the other end of the bellows 500 via a flange, and the small end of the tapered converging tube 600 is connected to one end of the connecting tube 200 via a clamping fixture 400. The tapered converging tube 600 can further increase the blowing pressure, enabling the gas exiting the air cap 300 to spray and clean the dust on the water-cooled wall 700.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A boiler water-cooled wall cleaning device, characterized in that, Installed on a water-cooled wall (700), the water-cooled wall (700) includes a boiler inner wall (710) and a plurality of water-cooled pipes (720) distributed on the boiler inner wall (710). The cleaning device includes: Air tube (100) is used to deliver compressed air; A connecting pipe (200) is embedded in the inner wall (710) of the boiler, and one end of the connecting pipe (200) is connected to the gas pipe (100). The vent cap (300) includes a mounting plate (310), a baffle plate (320), and a flow guide (330). The mounting plate (310), the baffle plate (320), and the flow guide (330) are all disposed on the side of the inner wall (710) of the boiler with water-cooled pipes (720). A plurality of baffle plates (320) are provided, and the plurality of baffle plates (320) are distributed in a vortex shape between the flow guide (330) and the mounting plate (310). The mounting plate (310) passes through the baffle plates (320). The air guide (330) is connected, and an air delivery space (340) is defined between the air guide (330) and the mounting plate (310). Two adjacent partitions (320) define an air blowing channel (350). The mounting plate (310) is connected to the other end of the connecting pipe (200). The connecting pipe (200), the air delivery space (340) and the air blowing channel (350) are connected in sequence. The air blowing channel (350) is used to blow out airflow to clean the dust on the water cooling pipe (720).

2. A boiler water wall cleaning device according to claim 1, characterised in that, The air deflector (330) includes a connecting ring (331), a flow guide ring (332), and a baffle plate (333). The baffle plate (333), the flow guide ring (332), and the connecting ring (331) are coaxially arranged. The baffle plate (333) is located closer to the mounting plate (310) than the connecting ring (331). The diameter of the connecting ring (331) is larger than the diameter of the baffle plate (333). The connecting ring (331) is connected to the baffle plate (333) through the flow guide ring (332). The flow guide ring (332) has a flow guide cone surface with its cone apex facing the mounting plate (310). The flow guide cone surface is used to guide the airflow out of the air blowing channel (350).

3. A boiler water wall cleaning device according to claim 2, characterised in that, The baffle plate (333) is provided with several pressure relief holes (333a).

4. The boiler water-cooled wall cleaning device according to claim 3, characterized in that, A plurality of air caps (300) are provided, and the plurality of air caps (300) are evenly distributed on the water-cooled wall (700), and the connecting pipes (200) are provided one to one corresponding to the air caps (300).

5. The boiler water-cooled wall cleaning device according to any one of claims 1 to 4, characterized in that, Includes a clamping fixture (400), one end of the connecting pipe (200) and the air pipe (100) are connected through the clamping fixture (400).

6. The boiler water-cooled wall cleaning device according to claim 5, characterized in that, A solenoid valve (110) is installed on the air pipe (100).

7. The boiler water-cooled wall cleaning device according to claim 6, characterized in that, Includes a bellows (500), one end of which is connected to the air outlet of the solenoid valve (110), and the other end of which is connected to one end of the connecting pipe (200).

8. The boiler water-cooled wall cleaning device according to claim 7, characterized in that, It includes a tapered converging tube (600), the large end of which is connected to the other end of the bellows (500) via a flange, and the small end of which is connected to one end of the connecting tube (200) via the clamping fixture (400).

Images