Novel CFB (circulating fluid bed) boiler diarrhea tube wear-resistant armor

Abstract

The utility model relates to a novel CFB (circulating fluid bed) boiler diarrhea tube abrasion-proof armor, which belongs to the technical field of diarrhea tube protection and comprises an abrasion-proof armor, the abrasion-proof armor comprises an arc-shaped tube, straight plates are fixedly connected to two ends of the arc-shaped tube, and the straight plates are fixedly connected to two ends of the arc-shaped tube. And the outer surface of the end part of one straight plate is fixedly connected with a limiting part. According to the assembled wear-resistant armor, when a single wear-resistant armor is damaged due to thermal expansion of the diarrhea pipe, the wear-resistant armor at the damaged part can be directly disassembled, the diarrhea pipe does not need to be disassembled, the damaged wear-resistant armor is convenient to replace, the operation is simple, convenient and rapid, the use is convenient, and meanwhile, the wear-resistant armor is convenient to disassemble and assemble. Due to the arrangement of the balls in the anti-abrasion armoring, sliding friction caused by thermal expansion of the diarrhea pipe can be changed into rolling friction, abrasion of the diarrhea pipe is reduced, the diarrhea pipe is well protected, the service life of the diarrhea pipe is prolonged, and therefore normal operation of a boiler is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of protection of loose pipes, and in particular relates to a novel anti-wear armor for loose pipes of CFB boilers. Background Art

[0002] The boiler slagging tube, also known as the slagging tube, Feston tube, anti-slagging tube, or pre-tube, is a crucial component of industrial boilers. Its primary function is to discharge flue gas from the boiler combustion chamber outlet. Its structural characteristics cause ash particles in the flue gas to solidify as the temperature drops, thereby reducing the formation of slagging on the superheater. This not only protects the superheater from slagging blockage but also maintains smooth flue gas flow and reduces residual rotational kinetic energy in the flue gas.

[0003] After searching, the invention patent application with the Chinese publication number CN110500575A discloses a diarrhea pipe sheath. The diarrhea pipe sheath includes a sheath body, an upper mounting plate, a lower mounting plate and a compensator. The upper and lower ends of the sheath body are respectively connected to the upper mounting plate and the lower mounting plate; the compensator is sleeved on the outside of the sheath body, and the compensator separates the outer wall of the sheath body into an upper section of the sheath body and a lower section of the sheath body. The diarrhea pipe sheath provided by the present invention has sufficient expansion margin when it is heated and expanded during boiler operation, and can expand freely upward and downward along the compensator without encountering resistance, thereby effectively preventing the diarrhea pipe sheath from deformation, and further effectively avoiding the problem of exposed wear of the pipe row, reducing the impact on the direction of the flue gas, and improving the stability of the boiler unit operation.

[0004] However, the above patent is directly mounted on the outer surface of the diarrheal pipe. When the sheath is damaged due to the thermal expansion of the diarrheal pipe, the diarrheal pipe needs to be removed first before the sheath can be repaired and replaced. The operation is relatively cumbersome and affects the normal operation of the boiler. Based on this, a new type of CFB boiler diarrheal pipe anti-wear armor is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a new CFB boiler tube anti-wear armor with a simple structure and reasonable design in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A new type of anti-wear armor for CFB boiler tubes includes anti-wear armor, which includes an arc-shaped tube. Both ends of the arc-shaped tube are fixedly connected to straight plates, one of the straight plates has an outer surface fixedly connected to a limiting portion, and the other straight plate is adapted to the limiting portion. The bottoms of the arc-shaped tube and the straight plate are fixedly connected to a plug-in portion.

[0008] As a further optimization solution of the present invention, the arc of the arc tube is greater than one hundred and ninety degrees.

[0009] As a further optimized solution of the present invention, the plug-in portion is compatible with the arc tube and the straight plate.

[0010] As a further optimization solution of the present invention, the length of the limiting portion is smaller than the length of the straight plate.

[0011] As a further optimization solution of the present invention, it further includes balls, which are installed on the inner surface of the straight plate. The balls are arranged in an equidistant array on the inner surface of the straight plate.

[0012] As a further optimization solution of the present invention, the balls are further mounted on the inner surface of the arc-shaped tube, and the balls are arranged in an equidistant array along the inner surface of the arc-shaped tube.

[0013] The beneficial effect of the present invention is that: the present invention uses an assembled anti-wear armor, and when a single anti-wear armor is damaged due to the thermal expansion of the diarrhea pipe, the anti-wear armor at the damaged part can be directly removed without removing the diarrhea pipe, which is convenient for replacing the damaged anti-wear armor, and the operation is simple, fast and easy to use. At the same time, due to the setting of the balls inside the anti-wear armor, the sliding friction of the diarrhea pipe caused by thermal expansion can be changed into rolling friction, which reduces the wear of the diarrhea pipe, provides good protection for the diarrhea pipe, and extends the service life of the diarrhea pipe, thereby ensuring the normal operation of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a set of anti-wear armor assembly-type integral three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the anti-wear armor of the utility model when it is not assembled;

[0016] Figure 3 This is a schematic diagram of the overall front structure of a group of anti-wear armor assembly type of the utility model;

[0017] Figure 4 This is a schematic diagram of a group of anti-wear armor assembly-type overall upward structure of the utility model;

[0018] Figure 5 It is a schematic diagram of the assembly state of two groups of anti-wear armors of the utility model.

[0019] In the figure: 1, anti-wear armor; 101, arc tube; 102, straight plate; 103, limit part; 104, plug-in part; 105, ball. DETAILED DESCRIPTION

[0020] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out 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. Technicians 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 Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, a new type of CFB boiler loose tube anti-wear armor includes an anti-wear armor 1, which includes an arc tube 101. Both ends of the arc tube 101 are fixedly connected with straight plates 102. The outer surface of the end of one straight plate 102 is fixedly connected to a limiting portion 103, and the other straight plate 102 is adapted to the limiting portion 103. The bottom of the arc tube 101 and the straight plate 102 are fixedly connected with a plug-in portion 104. The curvature of the arc tube 101 is greater than one hundred and ninety degrees. The part connected to the straight plate 102 is located within the inner diameter of the arc tube 101. In this way, It can provide an expansion gap for the expansion of the diarrhea tube, reduce the failure rate of the anti-wear armor 1 during assembly, the plug-in part 104 is compatible with the arc tube 101 and the straight plate 102, and the length of the limiting part 103 is less than the length of the straight plate 102, which is convenient for the straight plate 102 to be inserted into the plug-in part 104. It also includes balls 105, which are installed on the inner surface of the straight plate 102. The balls 105 are arranged in an equidistant array on the inner surface of the straight plate 102. The balls 105 are also installed on the inner surface of the arc tube 101, and the balls 105 are arranged in an equidistant array along the inner surface of the arc tube 101.

[0023] It should be noted that the anti-wear armor 1 can be assembled by welding or bolt connection. When assembled by bolts, it is only necessary to open bolt holes on the limiting part 103 and the straight plate 102 that is not fixedly connected to the limiting part 103, and at the same time, bolt holes are opened on the plug-in part 104, the arc tube 101 and the bottom of the straight plate 102. The anti-wear armor 1 assembled by welding or bolt connection is set on the outer surface of the diarrhea tube.

[0024] When the anti-wear armor 1 is placed on the outer surface of the diarrhea tube, first install the first group of anti-wear armor 1 at the bottom, fit one anti-wear armor 1 to the plane where the diarrhea tube is installed, and then the plug-in portion 104 fits on the plane. Then insert the straight plate 102 of the other anti-wear armor 1 that is not fixedly connected to the limiting portion 103 into the straight plate 102 of the fixedly connected limiting portion 103 of the anti-wear armor 1 placed on the plane. At this time, the two anti-wear armors 1 can be assembled and fixed by welding or bolting, and then the next group of anti-wear armor 1 is installed above the assembled and fixed anti-wear armor 1. During installation, The plug-in portion 104 of the next group of anti-wear armor 1 is plugged into the straight plate 102 and the arc tube 101, and the group of anti-wear armor 1 is assembled and fixed by welding or bolting. Then, the anti-wear armor 1 of the first group is assembled and fixed with the anti-wear armor 1 of the group by welding or bolting. This process is repeated until the outer surface of the diarrhea tube is installed with the anti-wear armor 1. When the diarrhea tube expands due to heat, the setting of the ball 105 can change the sliding friction generated by the expansion of the diarrhea tube into rolling friction, thereby reducing the wear on the diarrhea tube and extending the service life of the diarrhea tube.

[0025] When the anti-wear armor 1 is damaged due to the thermal expansion of the diarrhea pipe, the anti-wear armor 1 at the damaged part can be directly removed without removing the diarrhea pipe, which is convenient for replacing the damaged anti-wear armor 1. The operation is simple, fast and easy to use.

[0026] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A novel CFB boiler tube wear-resistant armor, comprising a wear-resistant armor (1), characterized in that: The wear-resistant armor (1) comprises an arc-shaped tube (101), both ends of the arc-shaped tube (101) are fixedly connected to straight plates (102), the outer surface of the end of one of the straight plates (102) is fixedly connected to a limiting portion (103), and the other straight plate (102) is adapted to the limiting portion (103), and the bottoms of the arc-shaped tube (101) and the straight plate (102) are fixedly connected to a plug-in portion (104).

2. The novel CFB boiler tube wear-resistant armor according to claim 1 is characterized by: The arc of the arc-shaped tube (101) is greater than one hundred and ninety degrees.

3. The novel CFB boiler tube anti-wear armor according to claim 1 is characterized by: The plug-in portion (104) is compatible with the arc-shaped tube (101) and the straight plate (102).

4. The novel CFB boiler tube wear-resistant armor according to claim 1 is characterized by: The length of the limiting portion (103) is smaller than the length of the straight plate (102).

5. The novel CFB boiler tube wear-resistant armor according to claim 1 is characterized by: The invention also includes balls (105), which are mounted on the inner surface of the straight plate (102). The balls (105) are arranged in an equidistant array on the inner surface of the straight plate (102).

6. The novel CFB boiler tube anti-wear armor according to claim 5 is characterized by: The balls (105) are also mounted on the inner surface of the arc-shaped tube (101), and the balls (105) are arranged in an equidistant array along the inner surface of the arc-shaped tube (101).

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