Rotary air preheater

Abstract

The utility model relates to the technical field of air pre-heaters, in particular to a rotary air pre-heater which comprises an air pre-heater rotor which is rotatably arranged, a partition mounting frame is mounted in the air pre-heater rotor, and the rotary air pre-heater further comprises a plurality of heat storage assemblies which are mounted in the air pre-heater rotor through the partition mounting frame. Each heat storage assembly comprises a plurality of heat storage units and a mounting frame used for mounting the heat storage units; the heat storage unit comprises a first heat storage sheet and a second heat storage sheet which are detachably mounted up and down; the device can be quickly mounted in the rotor of the air pre-heater through the arranged heat storage assembly, and is convenient to disassemble, assemble, repair and maintain; according to the heat storage assembly, through the fixed double-layer structure of the first heat storage pieces and the second heat storage pieces, the heat deformation resistance can be improved, meanwhile, the problem that adjacent plate bodies are overlapped and stacked is avoided, circulation can be kept, accumulated dust is reduced, and the dust blowing and cleaning effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air preheaters, in particular to a rotary air preheater. Background Art

[0002] Air preheater is a device used to improve the heat exchange performance of boilers and reduce energy consumption. Air preheaters are generally divided into three types: plate type, rotary type and tube type. Rotary air preheater has the advantages of high heat transfer efficiency and small size.

[0003] The heat storage fins in the rotary air preheater currently have the following problems: the existing wavy heat storage fins are prone to deformation during the heat exchange process, causing the multi-layer heat storage fins to be easily misaligned, overlapped, or stacked, resulting in changes in the gaps between the heat storage fins. This in turn makes it easy for flue gas and fly ash to accumulate, causing blockage, resulting in a decrease in the heat exchange capacity of the heat storage fins and affecting the performance of the air preheater.

[0004] Therefore, considering the need to overcome the problem of non-circulation caused by thermal deformation stacking of traditional corrugated heat storage plates, we propose a rotary air preheater. Utility Model Content

[0005] The purpose of the present invention is to solve the deficiencies mentioned in the above background technology and to provide a rotary air preheater.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A rotary air preheater comprises a rotatably arranged air preheater rotor, a partition mounting frame being installed inside the air preheater rotor, and further comprising:

[0008] A plurality of heat storage assemblies are installed inside the air preheater rotor through the partition mounting frame, each of the heat storage assemblies includes a plurality of heat storage units and a mounting frame for mounting the heat storage units;

[0009] The heat storage unit includes a first heat storage sheet and a second heat storage sheet which are detachably mounted up and down.

[0010] Preferably, the first heat storage plate is provided with a plurality of limiting convex plates, and the surface of the first heat storage plate is provided with a plurality of arranged and distributed inclined grooves between adjacent limiting convex plates, and the inclined grooves are used to increase the flowability and heat transfer area.

[0011] Preferably, the limiting convex plate is in an S-shaped structure inclined at 90 degrees, and the limiting convex plate includes two arc protrusions arranged symmetrically with respect to the center.

[0012] Preferably, the second heat storage plate is provided with a corrugated plate and two centrally symmetrically arranged clamping blocks, and the two clamping blocks are used to clamp the corresponding arc protrusions on both sides.

[0013] Preferably, the installation frame adopts a fan-shaped structure, and the heat storage unit is inserted into the installation frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The rotary air preheater can be quickly installed in the air preheater rotor through the heat storage component provided, which is convenient for disassembly, assembly, inspection and maintenance; the heat storage component has a double-layer structure of fixed first heat storage plates and second heat storage plates, which is conducive to improving the resistance to thermal deformation and avoiding the problem of overlapping and stacking of adjacent plates. It can maintain fluidity, reduce dust accumulation, and also help improve the effect of soot blowing and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

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

[0018] Figure 2 This is the installation diagram of the heat storage component of the utility model;

[0019] Figure 3 This is a schematic diagram of the heat storage component of the utility model;

[0020] Figure 4 This is one of the schematic diagrams of the heat storage unit of the present utility model;

[0021] Figure 5 This is the second schematic diagram of the heat storage unit of the present utility model;

[0022] Figure 6 It is a side view of the heat storage unit of the present utility model.

[0023] The meaning of each number in the figure is:

[0024] 1. Air preheater rotor; 2. Partition mounting frame; 3. Mounting frame;

[0025] 4. Heat storage unit; 41. First heat storage plate; 411. Inclined groove; 412. Position-limiting convex plate; 4121. Arc protrusion; 42. Second heat storage plate; 421. Corrugated plate; 422. Block. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-6 The present invention describes the above technical solution in detail through the following embodiments:

[0028] A rotary air preheater includes a rotatably arranged air preheater rotor 1, a partition mounting frame 2 is installed inside the air preheater rotor 1, and further includes:

[0029] Thermal storage components, such as Figure 2 The structure shown is installed inside the air preheater rotor 1 through a partition mounting frame 2. In this embodiment, each heat storage assembly includes a heat storage unit 4 and a mounting frame 3 for mounting the heat storage unit 4. Figure 2 and Figure 3 As shown in the structure, in order to fit the ring-shaped air preheater rotor 1 structure, the mounting frame 3 of this embodiment adopts a fan-shaped structure, and the heat storage unit 4 is inserted into the mounting frame 3.

[0030] It should be noted that if Figure 4-Figure 6 As shown in the structure, the heat storage unit 4 includes a first heat storage sheet 41 and a second heat storage sheet 42 that can be detachably installed above and below. In order to avoid the problem of misalignment and overlap caused by thermal deformation, a limiting convex plate 412 is provided on the first heat storage sheet 41 in this embodiment. The surface of the first heat storage sheet 41 is provided with arranged and distributed inclined grooves 411 between adjacent limiting convex plates 412. The inclined grooves 411 are used to increase the flowability and heat transfer area. The limiting convex plates 412 in this embodiment are as shown in FIG. Figure 6 In the structure shown, the limiting protrusion 412 is an S-shaped structure inclined at 90°. The limiting protrusion 412 includes two arc protrusions 4121 arranged symmetrically with the center. The arc protrusions 4121 at both ends of the limiting protrusion 412 can leave an anti-overlap space between it and the adjacent heat storage plates. Currently, most air preheaters use rectangular frames to install heat storage plates, and the structure of the present application is also suitable for rectangular frame installation. In order to better fit the fan-shaped structure of the air preheater rotor 1, the arc protrusion 4121 can cooperate with the installed second heat storage plate 42 to prevent the problem of complete overlap after deformation, and always leave a circulation gap, which is also convenient for later cleaning.

[0031] In this embodiment, to increase the heat exchange surface area, a corrugated plate 421 and centrally symmetrically arranged clamping blocks 422 are provided on the second heat storage plate 42, wherein the two clamping blocks 422 are used to clamp the arc protrusions 4121 on both sides at corresponding positions. In this embodiment, to improve the stability of the fan-shaped structure for installing the heat storage component, slots are provided on the frame to facilitate rapid insertion and maintenance of the heat storage component.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one such feature, and "multiple" means more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A rotary air preheater, comprising a rotatably arranged air preheater rotor (1), wherein a partition mounting frame (2) is installed inside the air preheater rotor (1), characterized in that: Also includes: A plurality of heat storage assemblies are installed inside the air preheater rotor (1) via the partition mounting frame (2), each of the heat storage assemblies comprising a plurality of heat storage units (4) and a mounting frame (3) for mounting the heat storage units (4); The heat storage unit (4) comprises a first heat storage plate (41) and a second heat storage plate (42) which are detachably mounted up and down.

2. The rotary air preheater according to claim 1, characterized in that: The first heat storage plate (41) is provided with a plurality of limiting convex plates (412), and a plurality of arranged and distributed inclined grooves (411) are provided on the surface of the first heat storage plate (41) and between adjacent limiting convex plates (412), wherein the inclined grooves (411) are used to increase the flowability and heat transfer area.

3. The rotary air preheater according to claim 2, characterized in that: The limiting convex plate (412) is in an S-shaped structure inclined at 90 degrees, and the limiting convex plate (412) includes two circular arc protrusions (4121) arranged symmetrically with respect to the center.

4. The rotary air preheater according to claim 3, wherein: The second heat storage plate (42) is provided with a wave plate (421) and two centrally symmetrically arranged clamping blocks (422), and the two clamping blocks (422) are used to clamp the corresponding arc protrusions (4121) on both sides.

5. The rotary air preheater according to claim 1, wherein: The installation frame (3) adopts a fan-shaped structure, and the heat storage unit (4) is inserted into the installation frame (3).

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