Fan-shaped plate adjusting structure suitable for air pre-heater anti-blocking technology

Abstract

The utility model provides a fan-shaped plate adjusting structure suitable for an air pre-heater anti-blocking technology. The fan-shaped plate adjusting structure comprises a fan-shaped plate, an extension rod connected to the outer side of the fan-shaped plate, a support connected to a fixing structure outside the axial range of an air pre-heater, and an adjusting structure connected between the extension rod and the support. The support is provided with an open hole, and one end of the adjusting structure penetrates through the open hole and is fixedly connected with the end face of the extension rod. According to the sector plate adjusting structure suitable for the air pre-heater anti-blocking technology, the adjusting mechanism is moved out of the axial range of the air pre-heater, and the problem that in the prior art, the installation position of the adjusting mechanism is limited is solved.

Description

Technical Field

[0001] This application relates to the technical field of air preheater related equipment, specifically to a sector plate adjustment structure applicable to air preheater anti-clogging technology. Background Technology

[0002] In industrial sectors such as thermal power generation, air preheaters are important auxiliary equipment in boiler systems. They are mainly used to recover heat from boiler flue gas to preheat combustion air, thereby improving boiler thermal efficiency. Rotary air preheaters are widely used due to their compact structure and high heat transfer efficiency.

[0003] However, during high-temperature operation, the rotary air preheater exhibits a mushroom-shaped deformation, with the rotor center typically warmer than the periphery, causing the rotor to bulge upwards. This deformation dynamically alters the sealing gap between the rotor seals and the fan-shaped plates. Excessive gap can lead to significant flue gas leakage into the air side (hot-end air leakage), severely reducing the air preheater's heat exchange efficiency and the boiler's overall economy, and potentially increasing the power consumption of the induced draft fan and forced draft fan.

[0004] To address the aforementioned air leakage problem, existing technologies typically incorporate adjustment mechanisms on the sector plates, enabling real-time adjustment of the plates as the rotor deforms. For example, patent CN221592940U discloses an air preheater sealing device that uses an adjusting rod to adjust the vertical displacement of a single sector plate. However, currently, the installation positions of these adjustment mechanisms are mostly located within the axial range of the air preheater. Due to the influence of the flue and air duct, the adjustment mechanisms can only be installed on the truss beams in the intermediate gaps. This significant limitation in location leads to complex structural design, difficult installation and commissioning, and compromised operational reliability. Furthermore, the flexibility and effectiveness of these adjustments may be insufficient when dealing with complex operating conditions. Utility Model Content

[0005] The purpose of this utility model is to provide a sector plate adjustment structure applicable to air preheater anti-blocking technology. By moving the adjustment mechanism from the axial range of the air preheater to outside the axial range, the problem of limited installation position of the adjustment mechanism in the prior art is solved.

[0006] This application is achieved through the following technical solution, specifically:

[0007] A sector plate adjustment structure applicable to air preheater anti-clogging technology is characterized in that it includes: a sector plate, an extension rod connected to the outside of the sector plate, a bracket connected to a fixed structure outside the axial range of the air preheater, and an adjustment structure connected between the extension rod and the bracket; the bracket is provided with an opening, and one end of the adjustment structure passes through the opening and is fixedly connected to the end face of the extension rod.

[0008] In this design, an extension rod is connected to the outside of the sector plate, and an adjustment structure connects the extension rod to a bracket of a fixed structure installed outside the axial range of the air preheater. An opening in the bracket allows the adjustment structure to pass through and be fixedly connected to the extension rod. This allows the installation position of the adjustment mechanism to be moved from within the axial range of the sector plate to outside the axial range. The extension rod then transmits the adjustment action to the sector plate, thereby adjusting its vertical height. This structure effectively overcomes the problem of limited installation position in existing technologies. The adjustment mechanism is not affected by flues or ducts, improving the convenience of installation and commissioning.

[0009] As an improvement to the adjustment structure in this application, the adjustment structure includes an adjustment rod and a base movably connected to the lower part of the adjustment rod, the base being fixed to the end face of the extension rod.

[0010] Furthermore, the adjusting rod includes a lead screw, and the adjusting structure also includes a nut fixed to the bracket, with the lead screw passing through the nut and the opening of the bracket and connected to the base.

[0011] Furthermore, the adjustment structure includes any one of a hydraulic cylinder, a pneumatic cylinder, or an electric push rod.

[0012] Furthermore, the base includes, but is not limited to, any one of a hinged base and a sliding base.

[0013] As an improvement to the bracket in this application, the bracket includes a right-angled triangular bracket, the first right-angled side of the right-angled triangular bracket is connected to the fixed structure, a limiting plate parallel to the extension rod is installed on the second right-angled side, and the opening is formed on the limiting plate.

[0014] Furthermore, the fixed structure is detachably connected to the first right-angled side.

[0015] The beneficial effects of this application are as follows:

[0016] The solution proposed in this application connects an extension rod to the outside of the sector plate, and connects the extension rod to a bracket of a fixed structure installed outside the axial range of the air preheater via an adjustment structure. An opening in the bracket allows the adjustment structure to pass through and be fixedly connected to the extension rod, thereby moving the installation position of the adjustment mechanism from within the axial range of the sector plate to outside the axial range. The extension rod transmits the adjustment action to the sector plate, thus adjusting its vertical height. This structure effectively overcomes the problem of limited installation position in existing technologies, and the adjustment mechanism is not affected by flues or ducts, improving the convenience of installation and commissioning.

[0017] In addition to the technical problems solved by this utility model, the technical features constituting the technical solution, and the advantages brought about by the technical features of these technical solutions as described above, other technical problems that this utility model can solve, other technical features contained in the technical solution, and the advantages brought about by these technical features will be further explained in detail with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a sector plate adjustment structure applicable to air preheater anti-clogging technology in an embodiment of this application;

[0019] Figure 2 This diagram illustrates a top view of the sector plate adjustment structure in a conventional air preheater.

[0020] Figure 3 This illustration shows a top view of a fan-shaped plate adjustment structure applicable to air preheater anti-clogging technology in an embodiment of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Fan-shaped plate; 2. Extension rod; 3. Bracket; 4. Adjustment structure; 41. Adjustment rod; 42. Base; 31. Opening; 32. First right-angled side; 33. Second right-angled side; 34. Limiting plate. Detailed Implementation

[0023] Figure 2 A top view of the sector plate adjustment structure in a prior art air preheater is shown. Figure 2 It can be seen that the traditional adjustment mechanism is installed within the axial range of the air preheater. Due to the influence of the flue and air duct, the adjustment mechanism can only be installed on the truss beam in the middle gap. The location is very limited, and the position of the sector plate cannot be flexibly adjusted. This results in a complex structural design, difficult installation and commissioning, and affected operational reliability. Furthermore, when dealing with complex operating conditions, its adjustment flexibility and effectiveness may be insufficient.

[0024] The following will be combined with the appendix Figure 1 and 3 The embodiments of the technical solution of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] In view of the problems existing in the background technology or products, Figure 1 This paper shows a schematic diagram of a sector plate adjustment structure applicable to air preheater anti-clogging technology in an embodiment of this application. Figure 3A top view of a sector plate adjustment structure applicable to air preheater anti-clogging technology is shown in an embodiment of this application. (See attached image.) Figure 1 and 3 As shown, this application embodiment provides a sector plate adjustment structure applicable to air preheater anti-clogging technology, including: a sector plate 1, an extension rod 2 connected to the outside of the sector plate 1, a bracket 3 connected to a fixed structure outside the axial range of the air preheater, and an adjustment structure 4 connected between the extension rod 2 and the bracket 3; the bracket 3 is provided with an opening 31, and one end of the adjustment structure 4 passes through the opening 31 and is fixedly connected to the end face of the extension rod 2.

[0026] Specifically, the extension rod 2 transmits the adjusting force to the sector plate 1. The extension rod 2 can be fixed to the sector plate 1 by welding, bolting, or other reliable methods to ensure effective force transmission. The extension rod can be of any form, such as a flat plate, round tube, round steel, or square tube. Outside the axial range of the air preheater, a fixed structure is provided, such as the frame of the air preheater body or other support structure, and the bracket 3 is fixed to this fixed structure. The bracket 3 supports the adjusting structure 4 and provides its installation position. The bracket 3 has an opening 31 that allows the adjusting structure 4 to pass through. The adjusting structure 4 is a key component for adjusting the height of the sector plate 1; one end passes through the opening 31 on the bracket 3 and is fixedly connected to the end face of the extension rod 2. By adjusting the adjusting structure 4, the vertical position of the sector plate 1 can be precisely controlled, thereby optimizing the airflow distribution of the air preheater and improving the anti-clogging effect.

[0027] In one implementation, the adjustment structure 4 includes an adjustment rod 41 and a base 42 movably connected to the lower part of the adjustment rod 41, the base 42 being fixed to the end face of the extension rod 2.

[0028] Specifically, the adjusting rod 41 is the main adjusting component of the adjusting structure 4. The purpose of the movable connection between the adjusting rod 41 and the base 42 is to accommodate the angle changes that may occur in the sector plate 1 during the adjustment process, and to avoid stress concentration caused by rigid connection. Preferably, the base 42 includes, but is not limited to, any one of a hinged base and a sliding base. This base 42 allows the adjusting rod 41 to rotate or move relative to the base 42 within a certain angle range.

[0029] Preferably, the adjusting rod 41 includes a lead screw, and the adjusting structure 4 further includes a nut fixed to the bracket 3. The lead screw passes through the nut and the opening 31 of the bracket 3 and is connected to the base 42. When the lead screw is rotated, since the nut 44 is fixed on the bracket 3 to restrict its axial movement, the rotational motion of the lead screw is converted into axial displacement through the threaded joint, driving the base 42 and the extension rod 2 to rise and fall as a whole, thereby precisely adjusting the vertical height of the sector plate 1.

[0030] Preferably, the adjustment structure 4 includes any one of a hydraulic cylinder, a pneumatic cylinder, or an electric actuator. The hydraulic cylinder, pneumatic cylinder, or electric actuator enables remote control and automated adjustment, improving the efficiency of the sector plate adjustment.

[0031] In one implementation, the bracket 3 includes a right-angled triangular bracket, the first right-angled side 32 of the right-angled triangular bracket is connected to the fixed structure, and a limiting plate 34 parallel to the extension rod 2 is installed on the second right-angled side 33, and the opening 31 is formed on the limiting plate 34.

[0032] Specifically, the design of the right-angled triangular bracket can effectively withstand the working force of the adjustment structure 4 and ensure its stability. When adjusting the height, the right-angled triangular bracket achieves stable support through the right-angle structure formed by its first right-angled side 32 and second right-angled side 33. The limiting plate 34 not only provides an installation positioning reference for the adjustment structure 4, but its vertical arrangement also ensures that the direction of the adjustment force is always consistent with the axis of the extension rod 2, thereby effectively transmitting the adjustment torque to the sector plate 1.

[0033] Preferably, the fixing structure and the first right-angled side 32 are detachably connected. The fixing structure and the first right-angled side 32 can be connected by bolts, snap-fit ​​connections, or other methods that facilitate disassembly. The detachable connection design allows the bracket 3 to be easily removed from the fixing structure, facilitating the adjustment mechanism 4 and the sector plate 1, and also improving the efficiency of maintenance, repair, or replacement.

[0034] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "set", "equipped with", "connected", and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sector-shaped plate adjustment structure applicable to air preheater anti-clogging technology, characterized in that, include: A sector plate (1), an extension rod (2) connected to the outside of the sector plate (1), a bracket (3) connected to a fixed structure outside the axial range of the air preheater, and an adjustment structure (4) connected between the extension rod (2) and the bracket (3); the bracket (3) is provided with an opening (31), and one end of the adjustment structure (4) passes through the opening (31) and is fixedly connected to the end face of the extension rod (2).

2. The sector-shaped plate adjustment structure as described in claim 1, characterized in that, The adjustment structure (4) includes an adjustment rod (41) and a base (42) movably connected to the lower part of the adjustment rod (41), and the base (42) is fixed to the end face of the extension rod (2).

3. The sector plate adjustment structure as described in claim 2, characterized in that, The adjusting rod (41) includes a lead screw, and the adjusting structure (4) also includes a nut fixed on the bracket (3). The lead screw passes through the nut and the opening (31) of the bracket (3) and is connected to the base (42).

4. The sector plate adjustment structure as described in claim 2, characterized in that, The adjustment structure (4) includes any one of a hydraulic cylinder, a pneumatic cylinder, or an electric push rod.

5. The sector-shaped plate adjustment structure as described in any one of claims 2 to 4, characterized in that, The base (42) includes, but is not limited to, any one of a hinged base and a sliding base.

6. The sector plate adjustment structure as described in claim 1, characterized in that, The bracket (3) includes a right-angled triangle bracket, the first right-angled side (32) of the right-angled triangle bracket is connected to the fixed structure, and a limiting plate (34) parallel to the extension rod (2) is installed on the second right-angled side (33), and the opening (31) is opened on the limiting plate (34).

7. The sector plate adjustment structure as described in claim 6, characterized in that, The fixed structure is detachably connected to the first right-angled side (32).

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