A boiler slag cleaning device for slag well

Abstract

This utility model discloses a coke-cleaning device for a boiler dry ash machine's slag well, comprising a coke-topping rod positioned between the external steel beam and the furnace wall steel beam. The bottom end of the coke-topping rod passes through a coke-drilling hole, and a hanging hole is provided at the top of the rod. Symmetrical lifting lugs are provided at the top of the rod. A top anchoring point is provided on the bottom surface of the external steel beam, and an upper pull steel wire rope connects the hanging hole and the top anchoring point. A lower anchoring point is provided on the top surface of the furnace wall steel beam, symmetrically positioned on both sides of the coke-drilling hole. A side pull steel wire rope connects the lifting lugs to the lower anchoring point of the furnace wall steel beam via chain hoists and steel wire ropes, achieving a two-point uniform force for coke lifting. The hanging hole of the coke-topping rod is connected to the top anchoring point of the external steel beam via chain hoists and steel wire ropes, enabling adjustment and stability of the coke-topping rod angle.

Description

Technical Field

[0001] This utility model belongs to the field of ash and slag in thermal power generation systems, specifically relating to a coke removal device for boiler dry slag machine slag well. Background Technology

[0002] The dry ash removal system is used in the boiler ash removal system of thermal power generating units. Each boiler is equipped with one air-cooled dry ash removal machine, ensuring that its operating output is not less than the maximum ash removal volume under continuous BMCR conditions. The dry ash removal machine is connected to the boiler ash outlet via an ash well. The ash well is independently supported, and its volume can meet the ash removal volume of the boiler under BMCR conditions for 4 hours. The walls of the ash well are lined with high-alumina refractory castable. A hydraulic shut-off gate is installed at the bottom of the ash well to effectively intercept large ash blocks and pre-crush them, ensuring 100% protection of the conveyor belt's safe operation and improving the cooling effect. The ash crusher is located at the outlet of the air-cooled dry ash removal machine, responsible for crushing large ash blocks to a particle size of no more than 25×25mm, which then falls into the ash bin for transfer.

[0003] Due to the deviation between the actual coal type used in the boiler and the designed coal type, as well as the dynamic changes in boiler combustion adjustments, varying degrees of coking occur on the boiler's heating surfaces. The furnace outlet temperature continues to rise, causing the molten ash from the boiler to drip into the dry ash machine's slag well. Some of this ash adheres to, accumulates, and solidifies on the sloping surface at the end of the dry ash machine's slag well. Over time, the amount of ash accumulates and the ash discharge port gradually shrinks, threatening the safe operation of the boiler.

[0004] Traditional descaling operations involve manual descaling using a handheld descaling rod and brute force. This method is inefficient and exposes workers to a dangerous working environment, threatening their personal safety. Utility Model Content

[0005] The purpose of this invention is to provide a device for cleaning slag from boiler dry ash machine slag wells, in order to solve the problems of low efficiency and poor safety and reliability in the traditional mode of manual slag removal from both ends of boiler dry ash machine slag wells in thermal power generation systems.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A coke-clearing device for a boiler dry ash machine slag well includes a top coke rod installed between the external steel beam and the furnace wall steel beam. The bottom end of the top coke rod passes through a coke-drilling hole, and a hanging hole is provided at the top of the top coke rod. Lifting lugs are symmetrically provided at the top of the top coke rod. A top anchoring point is provided on the bottom surface of the external steel beam. An upper pull steel wire rope is connected between the hanging hole and the top anchoring point. A lower anchoring point is provided on the top surface of the furnace wall steel beam. The lower anchoring points are symmetrically arranged on both sides of the coke-drilling hole. A side pull steel wire rope is connected between the lifting lugs and the lower anchoring point. Chain hoists are respectively installed on the upper pull steel wire rope and the side pull steel wire rope.

[0008] To further realize this utility model, the included angle between the top coke rod and the top surface of the furnace wall steel beam is 45°-90°.

[0009] The advantages of this utility model compared to the prior art are as follows:

[0010] This invention connects the lifting lugs of the top coke rod to the lower anchoring point of the furnace wall steel beam using a chain hoist and steel wire rope, so as to achieve the effect of uniform force on the coke at two points. The hanging hole of the top coke rod is connected to the top anchoring point of the external steel beam using a chain hoist and steel wire rope, so as to achieve the function of adjusting and controlling the angle of the top coke rod and stabilizing the angle of the top coke rod.

[0011] This invention breaks away from the traditional method of manual coking by hand, reducing the risk to workers, improving work efficiency, and making the device simple to manufacture, easy to install and use, and with a wide range of applications. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] The meanings of the symbols in the attached diagram are as follows: 1. Steel beam outside the furnace; 2. Steel beam of the furnace wall; 3. Top coke rod; 4. Coke drilling hole; 5. Hanging hole; 6. Lifting lug; 7. Top anchor point; 8. Upper pull wire rope; 9. Lower anchor point; 10. Side pull wire rope; 11. Chain hoist; 12. Coke block. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] like Figure 1 As shown, a coke removal device for a boiler dry slag machine slag well includes a top coke rod 3 installed between an external steel beam 1 and a furnace wall steel beam 2. The bottom end of the top coke rod 3 passes through a coke-drilling hole 4. The angle between the top coke rod 3 and the top surface of the furnace wall steel beam 2 is 45°-90°. A hanging hole 5 is provided at the top of the top coke rod 3. Lifting lugs 6 are symmetrically arranged at the top of the top coke rod 3. A top anchoring point 7 is provided on the bottom surface of the external steel beam 1. An upward steel wire rope 8 is connected between the hanging hole 5 and the top anchoring point 7. A lower anchoring point 9 is provided on the top surface of the furnace wall steel beam 2. The lower anchoring points 9 are symmetrically arranged on both sides of the coke-drilling hole 4. A side steel wire rope 10 is connected between the lifting lugs 6 and the lower anchoring point 9. Chain hoists 11 are respectively installed on the upward steel wire rope 8 and the side steel wire rope 10.

[0016] During operation, the top pull wire rope 8 and the side pull wire rope 10 are loosened by the chain hoist 11 until the bottom end (free end) of the top coke rod 3 contacts the coke lumps accumulated on the slag well slope surface inside the furnace. The chain hoist 11 on the top pull wire rope 8 is adjusted to pull the top pull wire rope 8, thereby adjusting the angle of the top coke rod 3 to an appropriate angle. The chain hoist 11 on the side pull wire rope 10 is adjusted to tighten the force to achieve the purpose of top coke. Then, the chain hoists 11 of the two side pull wire ropes 10 are tightened evenly at the same time. The side pull wire rope 10 shortens and drives the top coke rod 3 to push into the coke hole 4. At the same time, the top pull wire rope 8 is loosened synchronously with the downward movement of the top coke rod 3 to ensure that the angle of the top coke rod 3 does not change significantly. The top coke rod 3 pushes and squeezes the coke lumps, thereby achieving the effect of removing slag and coke accumulation on the slag well slope surface of the dry slag machine.

Claims

1. A slag bin decoking device for a boiler slag tap, characterized by: The system includes a top coke rod (3) set between the outer steel beam (1) and the furnace wall steel beam (2). The bottom end of the top coke rod (3) is inserted into the coke punching hole (4). The top of the top coke rod (3) is provided with a hanging hole (5). The top of the top coke rod (3) is symmetrically provided with lifting lugs (6). The bottom surface of the outer steel beam (1) is provided with a top anchor point (7). The hanging hole (5) and the top anchor point (7) are connected by an upper pull wire rope (8). The top surface of the furnace wall steel beam (2) is provided with a lower anchor point (9). The lower anchor points (9) are symmetrically provided on both sides of the coke punching hole (4). The lifting lug (6) and the lower anchor point (9) are connected by a side pull wire rope (10). Chain hoists (11) are respectively installed on the upper pull wire rope (8) and the side pull wire rope (10).

2. A slag tap hole of a boiler slag tap machine according to claim 1, characterized in that: The angle between the top coke rod (3) and the top surface of the furnace wall steel beam (2) is 45°-90°.

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