Anti-corrosion structure of thermal power plant boiler

Abstract

The utility model relates to the technical field of thermal power plant boiler corrosion prevention, in particular to a thermal power plant boiler corrosion prevention structure which comprises a boiler body, a combustion chamber is arranged at the bottom end of the boiler body, an annular box is arranged on the boiler body, an open groove is formed in the top end of the annular box, a top cover is arranged on the open groove, the top cover is in threaded connection with the open groove, and the top cover is connected with the annular box. A through groove is formed between the interior of the annular box and the interior of the boiler body, the open groove communicates with the through groove, a sealing ring is arranged on the through groove, a plurality of scrapers are arranged between the inner ring of the sealing ring and the inner wall of the boiler body, and the scrapers are arranged in an annular array mode. The multiple scraping plates arranged in the annular array mode are arranged on the inner ring of the sealing ring, dust and other impurities on the inner wall of the boiler body can be stably scraped into the combustion chamber, and therefore the situation that the inner wall of the boiler body is corroded by the dust and other impurities is effectively reduced, corrosion of the inner wall of the boiler body can be effectively prevented, and the safety of the boiler is improved and the service life of the boiler is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler anticorrosion in thermal power plants, in particular to an anticorrosion structure for boilers in thermal power plants. Background Art

[0002] As we all know, in thermal power plants, the combustion of coal can easily cause air pollution and consumption of energy resources. Due to the accumulation of ash and scale inside the boiler, the boiler is heated unevenly, and it will cause varying degrees of corrosion inside the boiler equipment, which will eventually damage the quality of the entire boiler and affect the power generation efficiency of the thermal power plant. Therefore, it is particularly important to analyze the corrosion problem of boiler equipment and do a good job in anti-corrosion work on boiler equipment. Therefore, it is necessary to propose a solution to this technical problem. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides an anti-corrosion structure for a boiler in a thermal power plant.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-corrosion structure of a boiler in a thermal power plant, comprising a boiler body, a combustion chamber is provided at the bottom end of the boiler body, a ring box is provided on the boiler body, a groove is provided at the top of the ring box, a top cover is provided on the groove, the top cover is threadedly connected to the groove, a through groove is provided between the interior of the ring box and the interior of the boiler body, the groove is connected to the through groove, a sealing ring is provided on the through groove, a scraper is provided between the inner ring of the sealing ring and the inner wall of the boiler body, a plurality of the scrapers are provided and arranged in an annular array, a bearing is provided between the bottom end of the sealing ring and the through groove, a baffle is provided on the outer ring of the sealing ring, a splicing mechanism is provided between the baffle and the sealing ring, a plurality of the baffles are provided and arranged in an annular array, an air inlet pipe is provided on one side of the ring box, an air outlet pipe is provided on the other side of the ring, the air inlet pipe and the air outlet pipe are both inclined, and an injection mechanism is provided on the air inlet pipe.

[0007] Furthermore, the utility model is improved in that the splicing mechanism includes a positioning groove and a positioning block, the positioning groove is opened at the top end of the sealing ring, the positioning groove is connected to the outer ring of the sealing ring, the positioning block is installed on one side of the baffle, the positioning block is against the positioning groove, and the positioning block and the positioning groove are both T-shaped structures.

[0008] Furthermore, the utility model is improved in that the jet mechanism includes a nozzle, the nozzle is installed at one end of the air inlet pipe, and the nozzle is located at one side of the through groove.

[0009] Furthermore, the utility model is improved in that flanges are provided on the air inlet pipe and the air outlet pipe.

[0010] Furthermore, the utility model is improved in that sealing rings are provided at both ends of the sealing ring.

[0011] Furthermore, the utility model is improved in that the sealing ring is made of high-silica glass fiber material.

[0012] Furthermore, the utility model is improved in that the inner wall of the boiler body and the outer surface of the scraper are coated with an anti-corrosion coating.

[0013] Furthermore, the utility model is improved in that a damping pad is provided on the outer side of the positioning block.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides an anti-corrosion structure for a thermal power plant boiler, which has the following beneficial effects:

[0016] The anti-corrosion structure of the boiler of this thermal power plant is that the gas from the inlet pipe blows the baffle and then passes through the through groove and is discharged from the outlet pipe. The sealing ring has a stable rotation angle on the bearing. A plurality of scrapers arranged in a circular array are provided on the inner ring of the sealing ring, which can stably scrape the ash and other impurities on the inner wall of the boiler body into the combustion chamber, thereby effectively reducing the corrosion of the inner wall of the boiler body by impurities such as ash, and can effectively prevent the corrosion of the inner wall of the boiler body, thereby improving the safety and life of the boiler. The scraper is only driven to rotate by air, which saves energy consumption. By rotating the top cover, the top cover is threaded away from the slot opened at the top of the ring box, so that it is convenient for personnel to maintain and clean the dust on the baffle and maintain the bearings and sealing rings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0019] Figure 3 For this utility model Figure 1 A half-section top view of the enlarged structure of the middle ring box;

[0020] Figure 4 For this utility model Figure 1 Enlarged front view of the middle ring box.

[0021] In the figure: 1. boiler body; 2. combustion chamber; 3. ring box; 4. top cover; 5. sealing ring; 6. scraper; 7. bearing; 8. baffle; 9. air inlet pipe; 10. air outlet pipe; 11. positioning block; 12. nozzle; 13. flange. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model is an anti-corrosion structure of a boiler in a thermal power plant, comprising a boiler body 1, a combustion chamber 2 being provided at the bottom end of the boiler body 1, a ring box 3 being provided on the boiler body 1, a slot being provided at the top end of the ring box 3, a top cover 4 being provided on the slot, the top cover 4 being threadedly connected to the slot, a through slot being provided between the inside of the ring box 3 and the inside of the boiler body 1, the slot being connected to the through slot, a sealing ring 5 being provided on the through slot, a scraper 6 being provided between the inner ring of the sealing ring 5 and the inner wall of the boiler body 1, the scraper 6 being provided in plurality and arranged in an annular array, a shaft being provided between the bottom end of the sealing ring 5 and the through slot Bearing 7, the outer ring of the sealing ring 5 is provided with a baffle 8, and a splicing mechanism is provided between the baffle 8 and the sealing ring 5. The baffle 8 is provided in plurality and arranged in a ring array. An air inlet pipe 9 is provided on one side of the ring box 3, and an air outlet pipe 10 is provided on the other side of the ring. The air inlet pipe 9 and the air outlet pipe 10 are both inclinedly arranged, and an injection mechanism is provided on the air inlet pipe 9. In this embodiment, the boiler body 1 is operated through the combustion chamber 2. Impurities such as ash generated during the operation will accumulate on the inner wall of the boiler body 1. Affected by the high temperature and high pressure environment, the inner wall of the boiler body 1 is prone to corrosion, affecting the safe operation and life of the boiler. At this time, through The air inlet pipe 9 is connected to the pipeline of the air supply equipment, and the air outlet pipe 10 is connected to the exhaust pipe. The gas is transported to the air inlet pipe 9 through the air supply equipment, such as an air pump and other devices. The gas is sprayed into the through groove through the jet mechanism of the air inlet pipe 9, so that the outer ring of the sealing ring 5 is provided with a plurality of baffles 8 arranged in an array and is impacted by the gas, driving the sealing ring 5 to rotate. The sealing ring 5 can stably rotate in the through groove through the bearing 7. An annular cavity can be formed between the outer ring of the sealing ring 5 and the through groove through the sealing ring 5. After the gas blows the baffle 8, it passes through the through groove and is discharged from the air outlet pipe 10. The stable rotation angle of the sealing ring 5 on the bearing 7 is The scraper 6 arranged in a circular array can stably scrape the ash and other impurities on the inner wall of the boiler body 1 into the combustion chamber 2, thereby effectively reducing the corrosion of the inner wall of the boiler body 1 by impurities such as ash, and can effectively prevent the corrosion of the inner wall of the boiler body 1, thereby improving the safety and life of the boiler. The scraper 6 is only driven to rotate by air, which saves energy consumption and solves the maintenance inconvenience caused by the traditional mechanical drive method and the problem of being inconvenient to use in a high temperature environment. By rotating the top cover 4, the top cover 4 leaves the groove opened at the top of the ring box 3 through the thread, so that it is convenient for personnel to maintain and clean the dust on the baffle 8 and maintain the bearing 7 and the sealing ring 5.

[0024] In the present solution, the splicing mechanism includes a positioning groove and a positioning block 11. The positioning groove is opened at the top end of the sealing ring 5. The positioning groove is connected to the outer ring of the sealing ring 5. The positioning block 11 is installed on one side of the baffle 8. The positioning block 11 is against the positioning groove. The positioning block 11 and the positioning groove are both T-shaped structures. By having the T-shaped positioning block 11 against the positioning groove, the baffle 8 can be stably assembled on the outer ring of the sealing ring 5, thereby facilitating the cleaning and replacement of the baffle 8.

[0025] In this embodiment, the jet mechanism includes a nozzle 12, which is installed at one end of the air inlet pipe 9. The nozzle 12 is located on one side of the through groove. Through the nozzle 12 of the jet mechanism, gas can be sprayed into the through groove more stably, thereby blowing the baffle 8 more stably.

[0026] In this solution, flanges 13 are provided on the air inlet pipe 9 and the air outlet pipe 10, and the flanges 13 facilitate the air inlet pipe 9 and the air outlet pipe 10 to be connected to external pipes. The flanges 13 can improve the connection strength and sealing between the air inlet pipe 9 and the air outlet pipe 10 and the external pipes.

[0027] In this solution, sealing rings are provided at both ends of the sealing ring 5, and the sealing rings can improve the sealing performance between the sealing ring 5 and the through groove to prevent hot air leakage.

[0028] In this solution, the sealing ring is made of high-silica glass fiber material, which has good ablation resistance and cutting performance, can be used for ultra-high temperature fire insulation at 1000 degrees, and can ensure the high temperature resistance of the sealing ring.

[0029] In this solution, the inner wall of the boiler body 1 and the outer surface of the scraper 6 are coated with an anti-corrosion coating, and the anti-corrosion performance of the inner wall of the boiler body 1 and the scraper 6 can be improved by the anti-corrosion coating.

[0030] In this solution, a damping pad is provided on the outer side of the positioning block 11, and the damping pad can make the positioning block 11 more firmly fixed in the positioning groove, so that the baffle 8 is fixed more firmly.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-corrosion structure of a thermal power plant boiler, comprising a boiler body (1), wherein a combustion chamber (2) is provided at the bottom end of the boiler body (1), characterized in that: The boiler body (1) is provided with a ring box (3), the top of the ring box (3) is provided with a groove, the groove is provided with a top cover (4), the top cover (4) is threadedly connected to the groove, a through groove is provided between the inside of the ring box (3) and the inside of the boiler body (1), the groove is connected to the through groove, a sealing ring (5) is provided on the through groove, a scraper (6) is provided between the inner ring of the sealing ring (5) and the inner wall of the boiler body (1), and the scraper (6) is provided with a plurality of scrapers arranged in an annular array. A bearing (7) is provided between the bottom end of the sealing ring (5) and the through groove, a baffle (8) is provided on the outer ring of the sealing ring (5), a splicing mechanism is provided between the baffle (8) and the sealing ring (5), a plurality of baffles (8) are provided and arranged in a ring array, an air inlet pipe (9) is provided on one side of the ring box (3), and an air outlet pipe (10) is provided on the other side of the ring, the air inlet pipe (9) and the air outlet pipe (10) are both arranged obliquely, and an air jet mechanism is provided on the air inlet pipe (9).

2. The anti-corrosion structure of a thermal power plant boiler according to claim 1, characterized in that: The splicing mechanism comprises a positioning groove and a positioning block (11); the positioning groove is arranged at the top end of the sealing ring (5); the positioning groove is connected to the outer ring of the sealing ring (5); the positioning block (11) is installed on one side of the baffle (8); the positioning block (11) abuts against the positioning groove; the positioning block (11) and the positioning groove both present a T-shaped structure.

3. The anti-corrosion structure of a thermal power plant boiler according to claim 2, characterized in that: The jet mechanism comprises a nozzle (12), wherein the nozzle (12) is installed at one end of the air inlet pipe (9), and the nozzle (12) is located at one side of the through groove.

4. The anti-corrosion structure of a thermal power plant boiler according to claim 3, characterized in that: Flanges (13) are provided on the air inlet pipe (9) and the air outlet pipe (10).

5. The anti-corrosion structure of a thermal power plant boiler according to claim 4, characterized in that: Sealing rings are provided at both ends of the sealing ring (5).

6. The anti-corrosion structure of a thermal power plant boiler according to claim 5, characterized in that: The sealing ring is made of high-silica glass fiber material.

7. The anti-corrosion structure of a thermal power plant boiler according to claim 6, characterized in that: The inner wall of the boiler body (1) and the outer surface of the scraper (6) are both coated with an anti-corrosion coating.

8. The anti-corrosion structure of a thermal power plant boiler according to claim 7, characterized in that: A damping pad is provided on the outer side of the positioning block (11).

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