A cleaning device for the anode duct of a wet electrostatic precipitator

Abstract

The utility model relates to the wet type electrostatic dust collector anode pipe cleaning field, concretely relates to a kind of cleaning device for wet type electrostatic dust collector anode pipe, including connecting rod and fixed disc, both ends of the connecting rod are provided with lifting ring, two lifting rings are connected by connecting rope;Connecting rod has external thread, fixed disc has through-hole, the fixed disc is sleeved on connecting rod and is fixed by nut thread, the fixed disc is between two lifting rings;The outer edge of the fixed disc is provided with several blades for cleaning dirt in anode pipe. The utility model not only greatly improves cleaning efficiency, but also can prolong the service life of anode pipe. At the same time, by reducing equipment downtime maintenance frequency and consumable waste, the operation and maintenance cost of cleaning system is reduced comprehensively.

Description

Technical Field

[0001] This utility model relates to the field of cleaning anode tubes of wet electrostatic precipitators, specifically to a cleaning device for anode tubes of wet electrostatic precipitators. Background Technology

[0002] The anode tubes of the wet electrostatic precipitator adopt a regular hexagonal honeycomb arrangement structure, with an inscribed circle diameter of not less than 350 mm, a tube wall thickness of ≥3 mm, and a single tube length of up to 6 meters. This structure improves dust removal efficiency by increasing the specific surface area, but its complex geometry leads to complicated hydrodynamic characteristics, accelerating the deposition of dust and acid mist on the tube wall surface.

[0003] During operation, particulate matter and sulfuric acid mist become charged under the influence of an electric field and adsorb onto the surface of the anode tube, accumulating over a long period to form a dense composite scale layer (mainly composed of SiO2, CaCO3, and sulfate crystals). In existing cleaning processes, scale on the tube surface can be efficiently removed by high-pressure water washing (pressure ≥8MPa), but due to the fluid stagnation effect at the bottom, the scale thickness can reach 3-5mm and the adhesion is significantly enhanced.

[0004] Current solutions to this problem rely on manual scraping with a scraper for mechanical stripping. However, this is limited by the spacing of the internal working channels and the 6-meter-long depth of the anode tubes, requiring operators to endure continuous bending over and bearing the risk of scratching the tube walls. More seriously, the bottom scale removal cycle shortens as the equipment's operating cycle increases, leading to higher annual maintenance costs and a higher proportion of unplanned downtime. This constitutes a core technical bottleneck restricting the stable operation of wet scrubbing systems.

[0005] The current operation and maintenance strategy generally adopts the "replacement instead of repair" approach of periodically replacing anode tubes. However, this approach has significant drawbacks: on the one hand, it requires frequent shutdown operations, with each replacement cycle taking about 2 to 3 days, which increases the unplanned downtime of the equipment; on the other hand, the replacement cost of a single anode tube is as high as 32,000 yuan, and the annual maintenance cost accounts for a relatively high proportion of the total operating cost of the equipment. At the same time, the metal material recycling rate of discarded anode tubes is low, resulting in serious resource waste.

[0006] To overcome the bottlenecks in existing technologies, this invention proposes an anode tube scaling removal device, which can improve scaling removal efficiency, reduce annual maintenance costs, and reduce metal resource consumption, effectively solving the technical problem of cleaning anode tubes in wet electrostatic precipitators. Utility Model Content

[0007] The purpose of this invention is to provide a cleaning device for the anode tube of a wet electrostatic precipitator, which solves the problem of high maintenance costs caused by the troublesome cleaning of the anode tube of the current wet electrostatic precipitator.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A cleaning device for the anode tube of a wet electrostatic precipitator includes a connecting rod and a fixing plate. Both ends of the connecting rod are provided with lifting rings, which are connected by a connecting rope. The connecting rod has external threads, and the fixing plate has through holes. The fixing plate is sleeved on the connecting rod and threadedly fixed by a positioning nut. The fixing plate is located between the two lifting rings. The outer edge of the fixing plate is provided with several blades for cleaning dirt inside the anode tube.

[0010] Furthermore, each fixed plate includes an upper clamping plate and a lower clamping plate, and the blade is disposed between the upper clamping plate and the lower clamping plate; both the upper clamping plate and the lower clamping plate are provided with connecting holes, and the blade is provided with an elongated hole; bolts pass through the connecting holes of the upper clamping plate, the elongated hole, and the connecting hole of the lower clamping plate in sequence, and the blade is connected between the upper clamping plate and the lower clamping plate by means of a nut.

[0011] Furthermore, the upper and lower clamping plates are both hexagonal in cross-section, and each straight edge is provided with a blade; the corresponding edges of two adjacent blades are stacked, and the blades located in odd positions are stacked on the top surface of the blades located in even positions, or the blades located in even positions are stacked on the top surface of the blades located in odd positions.

[0012] Furthermore, the blade is trapezoidal, and the two ends of the blade are rounded.

[0013] Furthermore, both the upper and lower clamping plates are provided with multiple clearance holes.

[0014] Furthermore, positioning nuts are provided at the top of the upper clamping plate and the bottom of the lower clamping plate.

[0015] Furthermore, an anti-loosening nut is provided on the inner side of the lifting ring.

[0016] By adopting the above technical solution, the beneficial technical effects of this utility model are:

[0017] This invention places blades on the outer edge of a fixed disc, which is then placed inside the hexagonal honeycomb-shaped anode tubes of a wet electrostatic precipitator. Both ends of a connecting rope are connected to lifting rings and pass through adjacent anode tubes. Technicians move the device within the anode tubes by pulling the connecting ropes, allowing the blades to remove dirt adhering to the inner wall of the anode tubes. This invention significantly improves cleaning efficiency and extends the lifespan of the anode tubes. Furthermore, by reducing equipment downtime for maintenance and minimizing material waste, it comprehensively reduces the operating costs of the cleaning system. Attached Figure Description

[0018] Figure 1This is a schematic diagram of a cleaning device for the anode tube of a wet electrostatic precipitator.

[0019] Figure 2 This is a schematic diagram of the present invention in the anode tube of a wet electrostatic precipitator.

[0020] Figure 3 This is a schematic diagram showing the connection between the fixed disc and the blade.

[0021] Figure 4 This is a schematic diagram of the blade.

[0022] Figure 5 This is an exploded view of the upper clamping plate, the blade, and the lower clamping plate. Detailed Implementation

[0023] like Figure 1 and Figure 3 As shown, a cleaning device for the anode tube of a wet electrostatic precipitator is disclosed. The anode tube 1 of the wet electrostatic precipitator is arranged in a hexagonal honeycomb pattern. The cleaning device includes a connecting rod 2 and a fixing plate 3. There are two fixing plates 3, both of which are mounted on the connecting rod 2. The connecting rod 2 has external threads, and the fixing plate 3 has through holes 4. The fixing plate 3 is sleeved on the connecting rod 2 and fixed by a positioning nut. Both ends of the connecting rod 2 are provided with lifting rings 5, and the two lifting rings 5 ​​are connected by a connecting rope 6. The fixing plate 3 is located between the two lifting rings 5. The outer edge of the fixing plate 3 is provided with several blades 7 for cleaning dirt inside the anode tube. When cleaning the dirt inside the anode tube 1 of the wet electrostatic precipitator, first tie one end of the connecting rope 6 to a lifting ring 5, then put the other end of the connecting rope 6 and one end of the lifting ring 5 with the connecting rope 6 into the anode tube 1 of the wet electrostatic precipitator. The connecting rope 6 is threaded up from the adjacent anode tube 1 of the wet electrostatic precipitator and tied to another lifting ring 5. By pulling the connecting rope 6, the technician moves the fixed plate 3 with the blade 7 along the anode tube 1 of the wet electrostatic precipitator, thus cleaning the dirt on the inner wall of the anode tube 1 of the wet electrostatic precipitator.

[0024] Two fixed discs 3 are symmetrically arranged on the connecting rod 2, ensuring the device remains horizontal during cleaning of the anode tube 1 of the wet electrostatic precipitator. This prevents the single fixed disc 3 from tilting due to uneven force on one side, effectively avoiding damage to the tube wall caused by tilting of the fixed disc 3. Furthermore, it significantly improves cleaning speed and quality. During cleaning of the inner wall of the anode tube, mechanical balance counteracts the eccentric torque, effectively avoiding the risk of tube wall damage due to uneven force on one side, greatly improving equipment safety and cleaning accuracy.

[0025] Each of the lifting rings 5 ​​has an anti-loosening nut 8 on its inner side, with two anti-loosening nuts 8 symmetrically arranged. The two anti-loosening nuts 8 are subjected to equal and opposite forces, achieving the purpose of double-nut friction anti-loosening. When either anti-loosening nut 8 tends to loosen due to external force, the other anti-loosening nut 8 generates a reverse braking torque by means of pre-tightening friction, effectively suppressing rotational displacement, thereby achieving a long-lasting and stable anti-loosening effect.

[0026] like Figure 5 As shown, the fixed plate 3 includes an upper clamping plate 3-1 and a lower clamping plate 3-2, and the blade 7 is disposed between the upper clamping plate 3-1 and the lower clamping plate 3-2; both the upper clamping plate 3-1 and the lower clamping plate 3-2 are provided with connecting holes 3-3, such as... Figure 4 As shown, the blade 7 has an elongated hole 3-4. Bolts pass sequentially through the connecting hole 3-3 of the upper clamping plate 3-1, the elongated hole 3-4, and the connecting hole 3-3 of the lower clamping plate 3-2, and the blade 7 is connected between the upper clamping plate 3-1 and the lower clamping plate 3-2 by a nut. The blade 7 can move along the direction of the elongated hole 3-4. When the blade 7 moves outward, it can accommodate a larger wet electrostatic precipitator anode tube 1, and when the blade 7 moves inward, it can accommodate a smaller wet electrostatic precipitator anode tube 1. The elongated hole 3-4 on the blade 7 increases the versatility of the device.

[0027] like Figure 5 As shown, the upper clamping plate 3-1 and the lower clamping plate 3-2 both have hexagonal cross-sections, and each straight edge is provided with a blade 7. The corresponding edges of two adjacent blades 7 are stacked, and the blades 7 located in odd-numbered positions are stacked on the top surface of the blades 7 located in even-numbered positions, or the blades 7 located in even-numbered positions are stacked on the top surface of the blades 7 located in odd-numbered positions. The upper clamping plate 3-1 and the lower clamping plate 3-2 both have hexagonal cross-sections, and a total of six blades 7 are provided on the outer edges of the upper clamping plate 3-1 and the lower clamping plate 3-2, including a first blade 7-2, a second blade 7-3, a third blade 7-4, a fourth blade 7-5, a fifth blade 7-6, and a sixth blade 7-7. The second blade 7-3 is stacked on top of the first blade 7-2 and the third blade 7-4, the fourth blade 7-5 is stacked on top of the third blade 7-4 and the fifth blade 7-6, and the sixth blade 7-7 is stacked on top of the first blade 7-2 and the fifth blade 7-6. The blade 7 is trapezoidal, with rounded corners at both ends. Stacking the two ends of the blade 7 together effectively prevents them from warping up over time, thus affecting the quality of cleaning.

[0028] Both the upper clamping plate 3-1 and the lower clamping plate 3-2 are provided with multiple clearance holes 9. The clearance holes 9 can reduce the weight of the device, making it easier for technicians to drag the device. The top of the upper clamping plate 3-1 and the bottom of the lower clamping plate 3-2 are provided with positioning nuts 10. The positioning nuts 10 can fix the fixed plate 3 in the designated position of the connecting rod 2, ensuring the symmetry of the two fixed plates 3.

[0029] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A cleaning device for use in a wet electrostatic precipitator anode duct, characterized by, The device includes a connecting rod and a fixing plate. Both ends of the connecting rod are provided with lifting rings, and the two lifting rings are connected by a connecting rope. The connecting rod has external threads, and the fixing plate has through holes. The fixing plate is sleeved on the connecting rod and fixed by a positioning nut. The fixing plate is located between the two lifting rings. The outer edge of the fixing plate is provided with several blades for cleaning dirt inside the anode tube.

2. A cleaning device for use in a wet electrostatic precipitator anode duct according to claim 1, wherein, Each fixed plate includes an upper clamping plate and a lower clamping plate, and the blade is disposed between the upper clamping plate and the lower clamping plate; both the upper clamping plate and the lower clamping plate are provided with connecting holes, and the blade is provided with an elongated hole; bolts pass through the connecting holes of the upper clamping plate, the elongated hole, and the connecting hole of the lower clamping plate in sequence, and the blade is connected between the upper clamping plate and the lower clamping plate by means of a nut.

3. A cleaning device for the anode tube of a wet electrostatic precipitator according to claim 2, characterized in that, Both the upper and lower clamping plates have hexagonal cross-sections, and each straight edge is provided with a blade; the corresponding edges of two adjacent blades are stacked, and the blade in the odd position is stacked on the top surface of the blade in the even position, or the blade in the even position is stacked on the top surface of the blade in the odd position.

4. A cleaning device for the anode tube of a wet electrostatic precipitator according to claim 3, characterized in that, The blade is trapezoidal, and the two ends of the blade are rounded.

5. A cleaning device for the anode tube of a wet electrostatic precipitator according to claim 2, characterized in that, Both the upper and lower clamping plates are provided with multiple clearance holes.

6. A cleaning device for the anode tube of a wet electrostatic precipitator according to claim 2, characterized in that, Positioning nuts are provided at the top of the upper clamping plate and the bottom of the lower clamping plate.

7. A cleaning device for the anode tube of a wet electrostatic precipitator according to claim 1, characterized in that, An anti-loosening nut is provided on the inner side of the lifting ring.

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