Leaf-shaped protruding plate sheet of air preheater

Abstract

The utility model discloses an air preheater leaf-shaped protruding plate, which relates to the field of air preheaters and comprises a plate body, clamping strips are evenly arranged on the front side wall and the rear side wall of the plate body, the clamping strips on the front side and the rear side are arranged in a staggered mode, and positioning strips are arranged on the upper side and the lower side of the front side wall of the plate body. According to the scheme, the sheet bodies, the clamping strips, the positioning strips and the like are arranged to be matched, the sheet bodies can be conveniently meshed and fixed by the device in pairs, loosening and deviation are avoided, heat exchange operation between the sheet bodies in pairs is facilitated, and the heat exchange efficiency is improved; through cooperation of the leaf-shaped protruding plates, the partition plates, the flow guide strips and the like, the device can conveniently conduct heat exchange operation, countercurrent flow heat exchange is adopted, the heat exchange efficiency of the air pre-heater is greatly improved, and air pre-heating treatment is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of air preheaters, in particular to a leaf-shaped raised plate piece of an air preheater. Background Art

[0002] Air preheater is a heat exchange device that uses the waste heat from boiler exhaust to heat the air required for combustion. The existing air preheaters are mainly rotary and tubular. The rotary air preheater has the advantages of high heat transfer surface density, light weight, and countercurrent heat exchange. It is widely used in 600MW and above coal-fired power generation units. The traditional plate heat exchanger has a compact structure, high heat transfer efficiency, and a small footprint. However, the heat exchange plates are connected by stacking each other, which is prone to loosening and displacement during use, resulting in loose plates and gaps that affect heat exchange and reduce heat exchange efficiency. For this reason, we propose leaf-shaped raised plates for air preheaters. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an air preheater with leaf-shaped raised plates, which effectively solves the problem that the heat exchange plates are connected in a stacked manner, which is prone to loosening and deviation during use, resulting in gaps between the plates, affecting heat exchange and reducing heat exchange efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air preheater leaf-shaped raised plate, comprising a plate body, the front and rear side walls of the plate body are evenly provided with snap-in strips, the snap-in strips on the front and rear sides are staggered, the upper and lower sides of the front side wall of the plate body are provided with positioning strips, the opposite side walls of the two groups of positioning strips are provided with grooves, the opposite side walls of the inner cavities of the two groups of grooves are evenly provided with springs, the opposite side walls of the two groups of springs are provided with snap-in blocks, the opposite side walls of the two groups of snap-in blocks are provided with pull rods, the other ends of the two groups of pull rods respectively penetrate the opposite side walls of the two groups of positioning strips, and the upper and lower side walls of the snap-in strips are provided with fixing grooves.

[0005] Preferably, the front and rear side walls of the inner cavity of the plate body are evenly provided with leaf-shaped protrusion plates, and the inner wall of the plate body is provided with a partition plate, which separates the front and rear sides of the inner cavity of the plate body into an air channel and a smoke channel, and the upper and lower sides of the front side wall of the partition plate are provided with guide strips, and the outer wall of the leaf-shaped protrusion plate is evenly provided with protrusions.

[0006] Preferably, the front and rear side walls of the inner cavity of the plate body are evenly provided with spoiler strips, the spoiler strips are located at the upper and lower sides of the leaf-shaped raised plate, and the outer walls of the spoiler strips are evenly provided with heat-conducting fins.

[0007] Preferably, the opposite side walls of the two groups of the clamping blocks are inclined, and the upper and lower ends of the clamping strip are chamfered.

[0008] Preferably, the opposite side walls of the two groups of the clamping blocks are provided with receiving grooves, the opposite ends of the two groups of the pull rods are provided with pull rings, and the opposite side walls of the two groups of the pull rings are provided with magnetic blocks.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The leaf-shaped raised plate of the air preheater can be matched with the plate body, the clamping strip and the positioning strip to facilitate the engagement and fixing of the plate bodies in pairs, thereby avoiding loosening and deviation, facilitating the heat exchange operation between the plate bodies in pairs and improving the heat exchange efficiency;

[0011] 2. The leaf-shaped raised plate of the air preheater can facilitate heat exchange operation by arranging leaf-shaped raised plates, partition plates and guide strips, etc., and adopts countercurrent heat exchange, which greatly improves the heat exchange efficiency of the air preheater and facilitates air preheating.

[0012] 3. The leaf-shaped raised plate of the air preheater can be easily connected and fixed to the plate body by arranging the clamping block, the positioning strip and the clamping strip, which is beneficial to improve the loading and unloading efficiency and facilitate the connection of the plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached picture:

[0015] Figure 1 This is a schematic diagram of the structure of the leaf-shaped raised plate of the air preheater of the utility model;

[0016] Figure 2 This is a structural schematic diagram of the clamping strip of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the plate body of the utility model;

[0018] Figure 4 It is a schematic cross-sectional structure diagram of the leaf-shaped raised plate of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the leaf-shaped raised plate of the utility model;

[0020] Figure 6 This is a schematic cross-sectional view of the positioning strip of the utility model;

[0021] In the figure: 100, plate body; 101, clamping strip; 102, positioning strip; 103, spring; 104, clamping block; 105, pull rod; 106, leaf-shaped protrusion plate; 107, partition plate; 108, guide strip; 109, spoiler strip; 110, thermal fin; 111, pull ring; 112, magnetic block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Depend on Figure 1-6 It is given that the leaf-shaped raised plate of the air preheater of the utility model, the front and rear side walls of the plate body 100 are evenly fixedly connected with the snap-in strips 101, which are staggered and fitted to facilitate heat conduction, and at the same time, the plate body 100 is conveniently fixedly connected by the snap-in strips 101, and the front and rear side snap-in strips 101 are staggered, and the upper and lower sides of the front side wall of the plate body 100 are fixedly connected with positioning strips 102, which are convenient for positioning and plugging the snap-in strips 101 to avoid misalignment, and the opposite side walls of the two groups of positioning strips 102 are provided with grooves The opposite side walls of the two groups of groove cavities are evenly fixedly connected with springs 103, and the springs 103 are used to facilitate the pushing and clamping of the clamping blocks 104. The opposite side walls of the two groups of springs 103 are fixedly connected with clamping blocks 104, and the positioning strip 102 is conveniently clamped and fixed through the clamping blocks 104. The opposite side walls of the two groups of clamping blocks 104 are fixedly connected with pull rods 105, and the pull rods 105 are used to facilitate the movement of the clamping blocks 104. The other ends of the two groups of pull rods 105 respectively penetrate the opposite side walls of the two groups of positioning strips 102, and the upper and lower side walls of the clamping strip 101 are provided with fixed grooves.

[0024] In this embodiment: the plate bodies 100 are placed in pairs and stacked, so that the snap-in strips 101 are staggered and snap-fitted. The staggered snap-fitting of the snap-in strips 101 can increase the heat exchange area, which is convenient for the heat exchange efficiency between the plate bodies 100. The elastic force of the spring 103 facilitates the movement of the snap-in block 104, and the snap-in block 104 is moved to snap into the inner cavity of the fixing groove, which is convenient for limiting the snap-in strips 101. The device can facilitate the engagement and fixation of the plate bodies 100 in pairs to avoid loosening and deviation, which is beneficial to the heat exchange operation between the plate bodies 100 and improves the heat exchange efficiency.

[0025] The front and rear side walls of the inner cavity of the plate body 100 are evenly fixedly connected with leaf-shaped protrusion plates 106, which facilitate heat exchange. The leaf-shaped protrusion plates 106 can withstand a large medium pressure difference without deformation, thereby improving the practicability of the device. The inner wall of the plate body 100 is fixedly connected with a partition plate 107, which facilitates the separation of the inner cavity of the plate body 100. The partition plate 107 is made of heat-conducting material. The partition plate 107 separates the front and rear sides of the inner cavity of the plate body 100 into an air channel and a smoke channel. The upper and lower sides of the front side wall of the partition plate 107 are fixedly connected with guide strips 108, which facilitate the diversion of air through the guide strips 108, so that the air can easily pass through the leaf-shaped protrusion plates 106 for heat exchange.

[0026] In this embodiment: the flue gas enters the flue gas channel from the upper side of the plate body 100, and the heat enters and is conducted to the plate body 100 for heat exchange. The leaf-shaped protrusion plate 106 is provided to facilitate heat conduction. The leaf-shaped protrusion structure enhances turbulence and strengthens heat transfer. After the heat exchange, the flue gas is discharged from the lower side, and the air enters the air channel from the lower right side. The air is guided by the guide strip 108 so that the air passes through the leaf-shaped protrusion plate 106 for heat exchange. The air after heat exchange is guided by the upper guide strip 108 and then discharged from the upper left side of the plate body 100 to realize countercurrent heat exchange between the flue gas and the air, so that the end difference of the plate body 100 is very small, which can make the device convenient for heat exchange operations. The countercurrent heat exchange is adopted, which greatly improves the heat exchange efficiency of the air preheater and facilitates the preheating of the air.

[0027] The front and rear side walls of the inner cavity of the plate body 100 are evenly fixedly connected with spoiler strips 109, which are located on the upper and lower sides of the leaf-shaped raised plate 106. The outer wall of the spoiler strip 109 is evenly provided with heat-conducting fins 110. The heat-conducting fins 110 facilitate heat conduction, and the heat of the flue gas is conveniently conducted to the air, which is beneficial to preheating the air.

[0028] In this embodiment, the spoiler strips 109 are provided to turbulently disturb the incoming gas, thereby enhancing the turbulence and strengthening the heat exchange, thereby facilitating improving the heat exchange efficiency.

[0029] The opposite side walls of the two groups of clamping blocks 104 are both inclined, and the upper and lower ends of the clamping strip 101 are both chamfered.

[0030] In this embodiment: the inclined setting makes it easier for the snap-in strip 101 to push the snap-in block 104 to move when performing the fitting connection, and the spring 103 is squeezed by the movement of the snap-in block 104. When the snap-in block 104 moves to the fixing groove, the spring 103 pushes the snap-in block 104 to move for snap-fitting and fixing. This can make the device easy to snap-fit ​​and fix, which is beneficial to improving the loading and unloading efficiency and facilitating the connection of the plate body 100.

[0031] The opposite side walls of the two groups of clamping blocks 104 are provided with storage grooves, and the opposite ends of the two groups of pull rods 105 are rotatably connected with pull rings 111, which facilitate the movement of the pull rods 105. The opposite side walls of the two groups of pull rings 111 are fixedly connected with magnetic blocks 112, which facilitate adsorption and fixation.

[0032] In the present embodiment: by providing a pull ring 111, it is convenient to drive the pull rod 105 to move. After installation, the pull ring 111 is rotated to be stored in the inner cavity of the storage groove, so that the magnetic block 112 is adsorbed onto the plate body 100. The pull ring 111 is conveniently adsorbed and fixed by the magnetic block 112 to prevent the pull ring 111 from swinging randomly and causing accidental pulling and releasing of the clamping connection.

Claims

1. A leaf-shaped raised plate for an air preheater, comprising a plate body (100), characterized in that: The front and rear side walls of the plate body (100) are evenly provided with snap-in strips (101), and the snap-in strips (101) on the front and rear sides are staggered. The upper and lower sides of the front side wall of the plate body (100) are both provided with positioning strips (102). The opposite side walls of the two groups of positioning strips (102) are both provided with grooves. The opposite side walls of the inner cavities of the two groups of grooves are evenly provided with springs (103). The opposite side walls of the two groups of springs (103) are both provided with snap-in blocks (104). The opposite side walls of the two groups of snap-in blocks (104) are both provided with pull rods (105). The other ends of the two groups of pull rods (105) respectively penetrate the opposite side walls of the two groups of positioning strips (102). The upper and lower side walls of the snap-in strip (101) are both provided with fixing grooves.

2. The leaf-shaped raised plate of the air preheater according to claim 1, characterized in that: The front and rear side walls of the inner cavity of the plate body (100) are evenly provided with leaf-shaped protruding plates (106), the inner wall of the plate body (100) is provided with a partition plate (107), the partition plate (107) separates the front and rear sides of the inner cavity of the plate body (100) into an air channel and a smoke channel, the upper and lower sides of the front side wall of the partition plate (107) are provided with guide strips (108), and the outer wall of the leaf-shaped protruding plate (106) is evenly provided with protrusions.

3. The leaf-shaped raised plate of the air preheater according to claim 2, characterized in that: The front and rear side walls of the inner cavity of the plate body (100) are evenly provided with spoiler strips (109), the spoiler strips (109) are located on the upper and lower sides of the leaf-shaped raised plate (106), and the outer walls of the spoiler strips (109) are evenly provided with heat-conducting fins (110).

4. The leaf-shaped raised plate of the air preheater according to claim 1, characterized in that: The opposite side walls of the two groups of the clamping blocks (104) are both arranged in an inclined manner, and the upper and lower ends of the clamping strip (101) are both arranged in a chamfered manner.

5. The leaf-shaped raised plate of the air preheater according to claim 1, characterized in that: The opposite side walls of the two groups of the clamping blocks (104) are provided with receiving grooves, the opposite ends of the two groups of the pull rods (105) are provided with pull rings (111), and the opposite side walls of the two groups of the pull rings (111) are provided with magnetic blocks (112).

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