A corrugated heat transfer plate for a preheater that is resistant to damage from thermal expansion and contraction

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By designing a wavy heat transfer plate that is anti-heat expansion and contraction in the preheater, the elastic deformation and sliding structure buffer temperature changes are used to buffer the problem of deformation and poor heat transfer performance caused by thermal expansion and contraction of the heat transfer plate, and the stronger thermal conductivity and stability are achieved.

CN222703893UActive Publication Date: 2025-04-01JIANGSU JINRUICHI ENVIRONMENTAL TECH CO LTD

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Patent Information

Application Number: CN202420571530.0
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-03-23
Publication Date: 2025-04-01
Estimated Expiration: 2034-03-23

AI Technical Summary

Technical Problem

Due to the fixed structure, the heat transfer plate used in the existing preheaters is prone to thermal expansion and contraction when the ambient temperature changes, resulting in deformation, reducing heat transfer effect and stability, and poor heat transfer performance.

Method used

A corrugated heat transfer plate sheet that is damaged by thermal expansion and contraction is designed. By providing a connecting rod, a first spring, a connecting rod, a fixed rod, a clamp, a first support column and a heat conduction sheet, an elastic deformation and sliding structure is formed to buffer the deformation caused by temperature changes, and maintain thermal conductivity and stability.

Benefits of technology

It effectively prevents the heat transfer plate from damaging its thermal conductivity due to thermal expansion and contraction, improves heat transfer performance and stability, and reduces the risk of deformation due to external force impact.

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Abstract

The utility model discloses a corrugated heat transfer plate for a preheater that is resistant to damage due to thermal expansion and contraction, comprising an outer plate body constituting the heat plate, an inner plate body installed between the outer plate body and the outer plate body, a connecting rod and a connecting cross rod, wherein the connecting rod is respectively installed between the second and fourth combination plates and between the fourth and fourth combination plates, and first springs are fixedly installed at both ends of the connecting rod, the connecting cross rod is respectively installed at the upper and lower ends of the connecting rod, and the connecting cross rods are arranged at equal distances inside the outer plate body and the inner plate body, and connecting vertical rods are installed inside the outer plate body and the inner plate body. The corrugated heat transfer plate for a preheater that is resistant to damage due to thermal expansion and contraction has a movable anti-deformation space inside the heat transfer plate, and when the external temperature of the heat transfer plate is too high or too low, the plate will not damage its heat conduction function due to thermal expansion and contraction, and the heat conduction performance of the heat transfer plate is stronger, and the plate is more stable and not easily deformed by external force impact.

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Description

Technical Field

[0001] The utility model relates to the technical field of heat transfer plates for preheaters, in particular to a corrugated heat transfer plate for preheaters which is resistant to damage caused by thermal expansion and contraction. Background Art

[0002] The preheater is installed in the boiler to preheat the air before entering the boiler to a certain temperature in advance, so as to improve the combustion conditions and increase the combustion efficiency of the fuel inside the boiler, while reducing heat loss and pollutant emissions, and increasing the stability of the boiler operation. The preheater exerts its heat conduction effect through the corrugated heat transfer plates;

[0003] However, the heat transfer plates currently used in preheaters are fixed structures. When the ambient temperature outside the plates is too high or too low, the plates are very likely to expand and contract due to heat, resulting in deformation, which reduces their own heat transfer effect. In addition, the heat transfer plates themselves have low stability and are prone to collision and deformation. In addition, the current heat transfer plates have poor heat transfer performance, which affects the use effect of the machine. Therefore, we propose a corrugated heat transfer plate for a preheater that is resistant to damage due to thermal expansion and contraction, so as to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide a corrugated heat transfer plate for a preheater which is resistant to damage due to thermal expansion and contraction, so as to solve the problem that the heat transfer plates currently used in preheaters are fixed structures when the ambient temperature outside the plates is too high or too low, the plates are very likely to expand and contract due to thermal expansion and contraction, resulting in deformation, thereby reducing their own heat transfer effect, and the heat transfer plates have low stability and are prone to collision and deformation, and the current heat transfer plates have poor heat transfer performance, thereby affecting the use effect of the machine.

[0005] To achieve the above object, the utility model provides the following technical solution: a corrugated heat transfer plate for a preheater that is resistant to damage due to thermal expansion and contraction, comprising: an outer plate body constituting the heat plate and an inner plate body installed between the outer plate body and the outer plate body;

[0006] Also includes:

[0007] A connecting rod, which is respectively installed between the second combined plate and the fourth combined plate and between the fourth combined plate and the fourth combined plate, and both ends of the connecting rod are fixedly installed with a first spring;

[0008] Connecting cross bars, which are respectively installed at the upper and lower ends of the connecting rods, and the connecting cross bars are arranged at equal distances inside the outer plate body and the inner plate body, and connecting vertical bars are installed inside the outer plate body and the inner plate body;

[0009] A fixing rod, wherein the fixing rod is installed inside the outer plate body and the inner plate body respectively, and a clamping block is installed inside the upper and lower ends of the fixing rod, and a second spring is fixedly arranged between the clamping blocks, and the clamping block and the fixing rod constitute a sliding structure;

[0010] The first support column is fixedly connected to the inside of the outer plate body and the inner plate body respectively, and the upper and lower ends of the first support column are fixedly connected to the second support column, and the first support column and the second support column are vertically connected, a cavity is formed between the first support column and the second support column, and a heat conductive sheet is fixedly installed inside the cavity.

[0011] Preferably, the inner panel bodies are arranged at equal intervals and installed inside the outer panel body, and the outer panel body includes a first combined panel and a second combined panel, and the inner panel body includes a third combined panel and a fourth combined panel, the second combined panel is installed between the first combined panel and the first combined panel, and the fourth combined panel is arranged between the third combined panel and the third combined panel.

[0012] Preferably, the connecting rod is slidably connected to the grooves of the second and fourth combination plates respectively through the first spring, and the connecting rod is in a cylindrical structure, and the outer end of the first spring is fixedly connected to the second and fourth combination plates.

[0013] Preferably, both ends of the connecting cross bar and the connecting vertical bar are configured as cylindrical structures, and the left and right parts of the connecting cross bar are respectively slidably connected to the inside of the first combined plate and the third combined plate.

[0014] Preferably, the middle portion of the connecting vertical rod is fixedly connected to both the second combined board and the fourth combined board, and the connecting vertical rod is slidably connected to the inside of the first combined board and the third combined board respectively.

[0015] Preferably, the fixing rod is slidably connected inside the outer plate body and the inner plate body, the clamping block is slidably connected inside the through groove opened in the fixing rod, and the clamping block is active through the second spring and is respectively engaged with the semicircular grooves opened inside the first combination plate and the third combination plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the preheater that is protected from damage due to thermal expansion and contraction uses a corrugated heat transfer plate, and a movable anti-deformation space is reserved inside the heat transfer plate. When the external temperature of the heat transfer plate is too high or too low, the plate will not damage its heat conduction function due to thermal expansion and contraction, and the heat conduction performance of the heat transfer plate is stronger, and the plate is more stable and not easily deformed due to external force impact;

[0017] 1. A connecting rod, a first spring and a connecting cross bar are provided to divide the heat transfer plate into several equal parts. When the temperature outside the heat transfer plate is too high or too low, elastic deformation will occur inside the heat transfer plate. At this time, the distance between the outer plate body and the inner plate body changes. The distance between the outer plate body and the inner plate body is eliminated by the movement of the connecting rod and the deformation of the first spring. The connecting cross bar can prevent the outer plate body from being disconnected from the inner plate body, thereby ensuring the normal operation of the heat transfer plate.

[0018] 2. A fixing rod and a clamping block are provided. When the heat transfer plate is deformed and its upper and lower parts move, the fixing rod slides inside the plate, and the clamping block changes the connection position with the groove inside the plate through the push of the second spring elastic force, thereby eliminating the deformation distance and preventing the separation of the plate components, thereby improving the stability and good thermal conductivity of the heat transfer plate;

[0019] 3. A first support column, a second support column and a heat conductive sheet are provided, and the first support column and the second support column jointly support the components of the heat transfer plate, thereby improving the supporting capacity and anti-collision performance of the plate, and improving the safety of the heat transfer plate in use. The filling of the heat conductive sheet is utilized to enhance the thermal conductivity of the heat transfer plate, and improve the working efficiency of the preheater. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of the connecting crossbar of the utility model;

[0023] Figure 4 It is a schematic diagram of the side cross-sectional structure of the outer plate body of the utility model;

[0024] Figure 5 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0025] In the figure: 1, outer plate; 2, inner plate; 3, first combination plate; 4, second combination plate; 5, third combination plate; 6, fourth combination plate; 7, connecting rod; 8, first spring; 9, connecting cross bar; 10, connecting vertical bar; 11, fixing rod; 12, block; 13, second spring; 14, first support column; 15, second support column; 16, cavity; 17, heat conducting sheet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 The utility model provides a technical solution: a corrugated heat transfer plate for a preheater that is resistant to damage due to thermal expansion and contraction, comprising: an outer plate body 1, an inner plate body 2, a first combination plate 3, a second combination plate 4, a third combination plate 5, a fourth combination plate 6, a connecting rod 7, a first spring 8, a connecting cross bar 9, a connecting vertical bar 10, a fixing rod 11, a block 12, a second spring 13, a first support column 14, a second support column 15, a cavity 16 and a heat conducting sheet 17.

[0028] When using the corrugated heat transfer plate for the preheater to prevent thermal expansion and contraction damage, first Figure 1 , Figure 2 and Figure 3 As shown, the inner plate body 2 is installed between the outer plate body 1 and the outer plate body 1, and the outer plate body 1 and the inner plate body 2 are arranged at equal intervals, the inner plate body 2 is neatly arranged into a number of equal parts, the outer plate body 1 includes a first combination plate 3 and a second combination plate 4, the inner plate body 2 includes a third combination plate 5 and a fourth combination plate 6, and the second combination plate 4 is installed between the first combination plate 3 and the first combination plate 3, the fourth combination plate 6 is arranged between the third combination plate 5 and the third combination plate 5, and the connecting rod 7 is respectively installed between the second combination plate 4 and the fourth combination plate 6 and the fourth combination plate 6 and the first combination plate 6. Between the four combination plates 6, the first spring 8 is fixedly installed at both ends of the connecting rod 7, the outer ends of the first spring 8 are fixedly connected to the second combination plate 4 and the fourth combination plate 6, the connecting rod 7 is slidably connected to the inside of the grooves opened in the second combination plate 4 and the fourth combination plate 6 through the first spring 8, and the shape of the connecting rod 7 is cylindrical, the left and right ends of the connecting cross bar 9 are respectively slidably connected to the inside of the first combination plate 3 and the third combination plate 5, the two ends of the connecting cross bar 9 are cylindrical structures, and the connecting cross bar 9 is installed on the upper and lower sides of the connecting rod 7;

[0029] The corrugated heat transfer plate is fixedly installed inside the preheater. When the temperature outside the heat transfer plate decreases or increases, the plate is deformed due to thermal expansion and contraction. At this time, the distance between the outer plate body 1 and the inner plate body 2 in the horizontal direction changes. When the temperature is too low, the plate shrinks, the outer plate body 1 and the inner plate body 2 move toward each other, and the connecting rod 7 shrinks into the inner plate body 1 and the inner plate body 2. The first spring 8 is squeezed and elastically deformed, which can buffer the moving distance and ensure the overall integrity of the plate. It can still play a buffering role when it expands due to heat. The connecting cross bar 9 slides inside the plate to prevent the plate components from detaching, thereby further improving the stability of the plate.

[0030] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the middle part of the connecting vertical rod 10 is fixedly connected to the second combination plate 4 and the fourth combination plate 6, and the upper and lower ends of the connecting vertical rod 10 are respectively slidably connected to the inside of the first combination plate 3 and the third combination plate 5, the connecting vertical rod 10 and the connecting cross bar 9 have the same shape, the fixing rod 11 is respectively slidably connected to the inside of the outer plate body 1 and the inner plate body 2, the card block 12 is slidably connected to the inside of the through groove opened at the upper and lower ends of the fixing rod 11, and the second spring 13 is fixedly installed between the card block 12 and the card block 12, and the card block 12 is in an active state through the second spring 13 and is respectively engaged with the semicircular grooves opened in the first combination plate 3 and the third combination plate 5, and the grooves are arranged at equal distances;

[0031] When the plate is deformed by temperature change, the distance between the first combined plate 3 and the second combined plate 4 and the distance between the third combined plate 5 and the fourth combined plate 6 changes. At this time, the block 12 is squeezed and slides into the fixed rod 11. The block 12 is squeezed by the fixed rod 11 and elastically deformed. As the plate components move, when the deformation is completed, the second spring 13 pushes the block 12 to re-enter the corresponding groove. The plate continues to perform the heat conduction function. The influence of the deformation cannot change the normal use of the heat transfer plate. The connecting vertical rod 10 and the connecting horizontal rod 9 have the same function, which jointly prevents the separation of the plate and improves the stability of the plate.

[0032] The first support column 14 is fixedly installed inside the outer plate body 1 and the inner plate body 2 respectively, and the upper and lower ends of the first support column 14 are fixedly connected to the second support column 15, and the first support column 14 and the second support column 15 are connected in a vertical state. A cavity 16 is formed inside the first support column 14 and the second support column 15, and the cavity 16 is filled with a heat conductive sheet 17. The first support column 14 and the second support column 15 ensure the stability and firmness of the plate to prevent the plate from being deformed by impact during transportation, installation and use. The heat conductive sheet 17 improves the thermal conductivity of the plate and improves the working efficiency of the preheater.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In addition, the directional terms such as up, down, left, right, front, and back in the text only represent their relative positions rather than absolute positions.

[0034] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A corrugated heat transfer plate for a preheater to prevent damage due to thermal expansion and contraction, comprising: An outer plate body (1) constituting a heat plate and an inner plate body (2) installed between the outer plate body (1); It is characterized by further comprising: A connecting rod (7), the connecting rod (7) being respectively installed between the second assembly plate (4) and the fourth assembly plate (6) and between the fourth assembly plate (6) and the fourth assembly plate (6), and first springs (8) are fixedly installed at both ends of the connecting rod (7); A connecting cross bar (9), the connecting cross bar (9) being respectively mounted on the upper and lower ends of the connecting rod (7), and the connecting cross bars (9) being arranged at equal distances inside the outer plate body (1) and the inner plate body (2), and connecting vertical bars (10) being mounted inside both the outer plate body (1) and the inner plate body (2); A fixing rod (11), the fixing rod (11) being mounted inside the outer plate body (1) and the inner plate body (2), respectively, and a clamping block (12) being mounted inside both upper and lower ends of the fixing rod (11), and a second spring (13) being fixedly arranged between the clamping blocks (12), and the clamping blocks (12) and the fixing rod (11) forming a sliding structure; A first support column (14), the first support column (14) being fixedly connected to the inside of the outer plate body (1) and the inner plate body (2), respectively, and the upper and lower ends of the first support column (14) are fixedly connected to the second support column (15), and the first support column (14) and the second support column (15) are connected in a vertical state, a cavity (16) is formed between the first support column (14) and the second support column (15), and a heat conducting sheet (17) is fixedly installed inside the cavity (16).

2. The corrugated heat transfer plate for a preheater that is resistant to damage due to thermal expansion and contraction according to claim 1, characterized in that: The inner panel bodies (2) are arranged at equal intervals and installed inside the outer panel body (1), and the outer panel body (1) comprises a first combined panel (3) and a second combined panel (4), and the inner panel body (2) comprises a third combined panel (5) and a fourth combined panel (6), the second combined panel (4) being installed between the first combined panel (3) and the fourth combined panel (6) being arranged between the third combined panel (5) and the third combined panel (5).

3. The corrugated heat transfer plate for a preheater that is resistant to damage due to thermal expansion and contraction according to claim 1, characterized in that: The connecting rod (7) is slidably connected to the inside of the grooves provided in the second combined plate (4) and the fourth combined plate (6) respectively via the first spring (8), and the connecting rod (7) is in the shape of a cylindrical structure, and the outer end of the first spring (8) is fixedly connected to both the second combined plate (4) and the fourth combined plate (6).

4. The corrugated heat transfer plate for a preheater that is resistant to damage due to thermal expansion and contraction according to claim 1, characterized in that: Both ends of the connecting cross bar (9) and the connecting vertical bar (10) are arranged as cylindrical structures, and the left and right parts of the connecting cross bar (9) are respectively slidably connected inside the first combined plate (3) and the third combined plate (5).

5. The corrugated heat transfer plate for a preheater that is resistant to damage due to thermal expansion and contraction according to claim 1, characterized in that: The middle portion of the connecting vertical rod (10) is fixedly connected to both the second combined board (4) and the fourth combined board (6), and the connecting vertical rod (10) is slidably connected to the inside of the first combined board (3) and the third combined board (5), respectively.

6. The corrugated heat transfer plate for a preheater that is resistant to damage due to thermal expansion and contraction according to claim 1, characterized in that: The fixing rod (11) is slidably connected inside the outer plate body (1) and the inner plate body (2), the clamping block (12) is slidably connected inside the through slot formed in the fixing rod (11), and the clamping block (12) is engaged with semicircular grooves formed inside the first assembly plate (3) and the third assembly plate (5) in an active state through a second spring (13).