Novel CFB (circulating fluid bed) boiler water-cooled wall four-tube abrasion-proof armor

Abstract

The utility model relates to a novel CFB (circulating fluid bed) boiler water-cooled wall four-tube anti-abrasion armor, which belongs to the technical field of boiler pipeline anti-abrasion and comprises an anti-abrasion assembly, the anti-abrasion assembly comprises an arc-shaped protective tube, one end of the protective tube is fixedly connected with a welding part, and the other end of the protective tube is fixedly connected with a steel wire. The top of the protection pipe is fixedly connected with an inserting part, the end, not fixedly connected with the welding part, of the protection pipe is matched with the welding part, the two anti-abrasion assemblies on the same horizontal plane are welded and assembled through the welding part, and the inner surface of the protection pipe is attached to the outer surfaces of four water cooling wall pipes. According to the utility model, through the arrangement of the assembled anti-abrasion assembly, the four pipes of the water-cooled wall are well protected, and the four pipes of the water-cooled wall are prevented from being abraded by fly ash, so that a pipeline can be connected with the pipe clamp through the anti-abrasion assembly, the pipeline is further prevented from being abraded by the pipe clamp, the four pipes of the water-cooled wall are well protected, and the service life of the water-cooled wall is prolonged. And the service life of the four pipes of the water cooling wall is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler pipeline anti-wear, and particularly relates to a new type of anti-wear armor for four pipes of the water-cooled wall of a CFB boiler. Background Technique

[0002] The four pipes of the water-cooled wall in a CFB boiler usually refer to four main heating surface parts: the water-cooled wall (including the extended water-cooled screen), the superheater, the reheater, and the economizer. The metal pipe fittings of these components play an important role in transferring heat during the operation of the boiler, and at the same time, they also face challenges such as wear and corrosion. The leakage of the four pipes refers to the leakage phenomenon that occurs in the metal pipe fittings of the above-mentioned parts. If this situation is not handled in a timely manner, it may affect the normal operation and safety of the boiler.

[0003] Currently, during the operation of a CFB boiler, the wear problem of the four pipes of the water-cooled wall is particularly prominent because they not only have to withstand the high-temperature and high-pressure working environment but also resist the erosion and wear of the bed material medium. To extend the service life of these components, anti-wear and anti-corrosion technologies are usually adopted. For example, the supersonic arc spraying technology is used to improve the wear resistance and corrosion resistance of the pipe wall. In addition, by optimizing the design and material selection of the water-cooled wall pipes, the frictional resistance and thermal deviation can be reduced, thereby reducing the leakage risk. However, due to the long-term use of the four pipes of the water-cooled wall, during the operation of the boiler, fly ash particles will flow with the flue gas and cause wear to the inner wall of the pipeline. This kind of wear is common in the area of the rear shaft low-temperature superheater and the economizer; the friction during the operation of the pipeline and the pipe clamp will cause mechanical wear, especially in the area of the pipeline welding joint or where the pipe rows are dense; both will cause wear to the four pipes of the water-cooled wall. Based on this, a new type of anti-wear armor for the four pipes of the water-cooled wall of a CFB boiler is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a new type of anti-wear armor for four pipes of the water-cooled wall of a CFB boiler with a simple structure and reasonable design in order to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions:

[0006] A new type of anti-wear armor for four pipes of the water-cooled wall of a CFB boiler includes an anti-wear component. The anti-wear component includes a protection pipe. The protection pipe is set to be arc-shaped, and a welding part is fixedly connected to one side. A plug-in part is fixedly connected to the top of the protection pipe. The side of the protection pipe not fixedly connected to the welding part is adapted to the welding part. Two anti-wear components on the same horizontal plane are welded and assembled through the welding part. The inner surface of the protection pipe is attached to the outer surface of the four pipes of the water-cooled wall.

[0007] As a further optimized scheme of the utility model, the length of the welding part is less than the length of the protection pipe.

[0008] As a further optimized solution of the utility model, the insertion part is adapted to the protective tube.

[0009] As a further optimized solution of the utility model, it further includes an anti-collision mechanism. The anti-collision mechanism includes a rotating shaft installed on the outer surface of the protective tube. A sleeve is connected to the rotating part of the rotating shaft. A sliding rod is slidably connected inside the sleeve. A protective plate is fixedly connected to the free end of the sliding rod. A damping spring is fixedly connected to one side of the sliding rod where the protective plate is located. The end of the damping spring far from the protective plate is fixedly connected to the protective tube.

[0010] As a further optimized solution of the utility model, the anti-collision mechanisms are arranged in an array along the outer surface of the protective tube. The protective plate is arranged in an arc shape, and the distance between both ends of the protective plate is smaller than the outer diameter of the protective tube.

[0011] As a further optimized solution of the utility model, a buffer spring is fixedly connected inside the sleeve, and the other end of the buffer spring is fixedly connected to the sliding rod.

[0012] The beneficial effects of the utility model are as follows: Through the setting of the assembled anti-wear component of the utility model, good protection for the four tubes of the water-cooled wall is achieved, preventing the wear caused by fly ash to the four tubes of the water-cooled wall, enabling the pipeline to be connected to the pipe clamp through the anti-wear component, thereby preventing the wear caused by the pipe clamp to the pipeline, providing good protection for the four tubes of the water-cooled wall, and extending the service life of the four tubes of the water-cooled wall. Description of the Drawings

[0013] Figure 1 is the three-dimensional assembled structure schematic diagram of the anti-wear component of the utility model;

[0014] Figure 2 is the three-dimensional unassembled structure schematic diagram of the anti-wear component of the utility model;

[0015] Figure 3 is the front structure schematic diagram of the assembled anti-wear component of the utility model;

[0016] Figure 4 is the top structure schematic diagram of the assembled anti-wear component of the utility model;

[0017] Figure 5 is the front middle-sectioned structure schematic diagram of the unassembled anti-wear component of the utility model;

[0018] Figure 6 is the three-dimensional structure schematic diagram of the anti-collision mechanism of the utility model.

[0019] In the figure: 1. Anti-wear component; 101. Protective tube; 102. Welding part; 103. Insertion part; 201. Rotating shaft; 202. Sleeve; 203. Sliding rod; 204. Buffer spring; 205. Protective plate; 206. Damping spring. DETAILED DESCRIPTION

[0020] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example

[0022] like Figures 1 - 5 As shown, a novel CFB boiler water-cooled wall four-tube anti-wear armor includes an anti-wear component 1, and the anti-wear component 1 includes a protective tube 101. The protective tube 101 is arranged in an arc shape, and one end is fixedly connected with a welding part 102, and the top of the protective tube 101 is fixedly connected with a plug-in part 103. The end of the protective tube 101 that is not fixedly connected with the welding part 102 is matched with the welding part 102. Two anti-wear components 1 on the same horizontal plane are welded and assembled through the welding part 102. The inner surface of the protective tube 101 is fitted with the outer surface of the four water-cooled wall tubes. The length of the welding part 102 is less than the length of the protective tube 101. The plug-in part 103 is matched with the protective tube 101. When the upper and lower anti-wear components 1 are connected, the bottom of the protective tube 101 of the upper anti-wear component 1 can be inserted into the plug-in part 103 of the lower anti-wear component 1 for welding.

[0023] When in use, the anti-wear component 1 is installed on the four tubes. It is necessary to ensure that the fitting surface of the anti-wear component 1 is parallel to the four tubes arranged side by side. When installing, first fit the first anti-wear component 1 with the tube wall of the four tubes, and then fit the end of the second anti-wear component 1 that is not fixedly connected with the welding part 102 with the end of the first anti-wear component 1 that is fixedly connected with the welding part 102, and then the two anti-wear components 1 can be welded by welding, and then the protective tube 101 of the third anti-wear component 1 is inserted into the plug-in part 103 of the first anti-wear component 1, and then the protective tube 101 of the fourth anti-wear component 1 is inserted into the plug-in part 103 of the second anti-wear component 1, and at the same time, the protective tube 101 of the fourth anti-wear component 1 that is not fixedly connected with the welding part 103 of the fourth anti-wear component 1 is One end of the connecting portion 102 is fixedly connected to one end of the welding portion 102 of the third anti-wear component 1, and the first anti-wear component 1 and the third anti-wear component 1 can be welded by welding, and the second anti-wear component 1 and the fourth anti-wear component 1 can be welded, and the third anti-wear component 1 and the fourth anti-wear component 1 can be welded, and this process is repeated until the anti-wear components 1 are installed outside the tube walls of the four tubes, thereby achieving good protection for the four water-cooled wall tubes and preventing the wear of the four water-cooled wall tubes caused by fly ash. At the same time, the pipeline can be connected to the pipe clamp through the anti-wear component 1, thereby preventing the wear of the pipeline caused by the pipe clamp, providing good protection for the four water-cooled wall tubes and extending the service life of the four water-cooled wall tubes.

[0024] likeFigures 1 - 6 As shown, it also includes an anti-collision mechanism, which includes a rotating shaft 201 installed on the outer surface of the protective tube 101, the rotating part of the rotating shaft 201 is connected to a sleeve 202, a sliding rod 203 is slidably connected in the sleeve 202, a guard plate 205 is fixedly connected to the free end of the sliding rod 203, the guard plate 205 is located on one side of the sliding rod 203 and is fixedly connected to a shock-absorbing spring 206, one end of the shock-absorbing spring 206 away from the guard plate 205 is fixedly connected to the protective tube 101, the anti-collision mechanism is arranged in an array along the outer surface of the protective tube 101, the guard plate 205 is arranged in an arc shape, the distance between the two ends of the guard plate 205 is smaller than the outer diameter of the protective tube 101, a buffer spring 204 is fixedly connected in the sleeve 202, and the other end of the buffer spring 204 is fixedly connected to the sliding rod 203.

[0025] When in use, the anti-collision mechanism installed on the protective tube 101 is in a vertical state with the four tubes in parallel. When the four tubes of the boiler are hit by external objects or personnel, the external objects and personnel will first hit the protective plate 205, causing the protective plate 205 to squeeze the shock-absorbing spring 206, and causing the slide bar 203 to slide into the sleeve 202, squeezing the buffer spring 204, and the shock-absorbing spring 206, the buffer spring 204 and the slide bar 203 absorb the external impact force, and in this process, due to the setting of the rotating shaft 201, the protective plate 205 will swing to both sides to achieve further force unloading operation, thereby achieving good protection for the anti-wear component 1, preventing external objects from hitting the anti-wear component 1, causing the four tubes to bend, and preventing the four tubes from generating a large amount of heat when working, causing burns when people accidentally touch the anti-wear component 1, thereby providing good protection for the people.

[0026] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A new type of four-pipe anti-wear armor for the water-cooled wall of a CFB boiler, comprising an anti-wear component (1), characterized in that: The anti-wear component (1) includes a protective tube (101), the protective tube (101) is arranged in an arc shape, and a welding part (102) is fixedly connected to one side thereof. A plugging part (103) is fixedly connected to the top of the protective tube (101). The side of the protective tube (101) that is not fixedly connected to the welding part (102) is adapted to the welding part (102). Two anti-wear components (1) on the same horizontal plane are welded and assembled through the welding part (102). The inner surface of the protective tube (101) is attached to the outer surface of the four tubes of the water-cooled wall.

2. A novel four-tube anti-wear armor for the water wall of a CFB boiler according to claim 1, characterized in that: The length of the welding part (102) is less than the length of the protective tube (101).

3. A novel four-pipe anti-wear armor for the water-cooled wall of a CFB boiler according to claim 1, characterized in that: The plugging part (103) is adapted to the protective tube (101).

4. A novel four-tube anti-abrasion armor for the water-cooled wall of a CFB boiler according to any one of claims 2 or 3, characterized in that: It further includes an anti-collision mechanism. The anti-collision mechanism includes a rotating shaft (201) installed on the outer surface of the protective tube (101). A sleeve (202) is connected to the rotating part of the rotating shaft (201). A sliding rod (203) is slidably connected in the sleeve (202). A protective plate (205) is fixedly connected to the free end of the sliding rod (203). A damping spring (206) is fixedly connected to one side of the protective plate (205) where the protective plate (205) is located. The end of the damping spring (206) away from the protective plate (205) is fixedly connected to the protective tube (101).

5. A novel four-tube anti-wear armor for the water-cooled wall of a CFB boiler according to claim 4, characterized in that: The anti-collision mechanism is arranged in an array along the outer surface of the protective tube (101). The protective plate (205) is arranged in an arc shape. The distance between the two ends of the protective plate (205) is less than the outer diameter of the protective tube (101).

6. A novel four-tube anti-abrasion armor for the water-cooled wall of a CFB boiler according to claim 4, characterized in that: A buffer spring (204) is fixedly connected in the sleeve (202), and the other end of the buffer spring (204) is fixedly connected to the sliding rod (203).

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