A baffle structure for preventing condensation corrosion in a low temperature section of a boiler

Abstract

The utility model discloses a prevent the condensation corrosion of boiler low temperature section's fender structure, the fender structure is located the casing of boiler, the fender structure includes the splicing frame of casing connection, the splicing frame detachably is provided with condensation adsorption subassembly, the condensation adsorption subassembly includes the cooling pipe of through in splicing frame and the heat conduction rod of setting up on cooling pipe, a plurality of metal heat conduction filaments are provided on the heat conduction rod surface, the heat conduction rod surface still is provided with acid liquor adsorption groove, condensation adsorption subassembly can carry out heat exchange to the flue gas in boiler, and the heat conduction rod can improve the heat exchange speed, and metal heat conduction filament can increase the contact area, and in the condensation time, acidic gas will become acid liquor and be adsorbed by heat conduction filament, and be collected by acid liquor adsorption groove. To reduce the acidity content of acidic gas. By replacing condensation adsorption subassembly, the structural strength of low temperature section is improved indirectly, thereby improving the overall service life of boiler.

Description

Technical Field

[0001] This application relates to the field of boilers, and in particular to a protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler. Background Technology

[0002] Boilers are core thermal energy equipment in modern industrial production and centralized heating systems, undertaking crucial energy conversion tasks. During boiler operation, the high-temperature flue gas generated by combustion gradually releases heat as it flows through the furnace and various heating surfaces (heat exchangers), causing its temperature to continuously decrease. When the flue gas temperature drops below the dew point temperature of the acidic gases it contains (especially SO2 / SO3 generated from the combustion of sulfur in the fuel, as well as water vapor) (commonly known as the "acid dew point"), the acidic components in the flue gas will condense from a gaseous state into a liquid acid.

[0003] The tail section of the boiler, due to the low temperature of the internal working fluid (water or air) and the high heat exchange intensity, has a metal wall temperature that is closest to or even lower than the acid dew point temperature of the flue gas. This area is the most prone to acid condensation, known as the "low-temperature section".

[0004] Existing boilers often have a protective plate in the low-temperature section to cover and fix the refractory insulation layer or directly form the flue wall. However, when the temperature of the flue gas sidewall exposed in this area is below the acid dew point, the condensed acidic liquid will continuously adhere to the surface of the protective plate, causing rapid pitting corrosion, ulceration corrosion, and even perforation of the protective plate and the components it protects. This type of damage is commonly referred to as "low-temperature dew point corrosion" or "condensation corrosion." This weakens the structural strength of the low-temperature section, leading to reduced boiler efficiency and operational safety, and ultimately shortening the overall service life of the boiler. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a protective plate structure to prevent condensation corrosion in the low-temperature section of a boiler.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] A protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler is disclosed. The protective plate structure is disposed on the boiler shell and includes a splicing frame connected to the shell. A condensation adsorption component is detachably disposed on the splicing frame. The condensation adsorption component includes a cooling pipe penetrating through the splicing frame and a heat-conducting rod sleeved on the cooling pipe. Multiple metal heat-conducting wires are disposed on the surface of the heat-conducting rod, and an acid adsorption groove is also formed on the surface of the heat-conducting rod.

[0008] Preferably, the splicing frame has a through hole through which the cooling pipe and the heat-conducting rod pass, and a sleeve is fixed on the heat-conducting rod, the sleeve being threadedly connected to the through hole.

[0009] Preferably, the sleeve is fixed with a rotating handle on the outer side of the splicing frame.

[0010] Preferably, the length of the metal heat-conducting wire is greater than the radius of the sleeve.

[0011] Preferably, the splicing frame is further provided with a receiving assembly, which includes a receiving seat detachably disposed on the splicing frame. One end of the receiving seat is located inside the splicing frame, and the other end is located outside the splicing frame. A receiving ring is disposed on the receiving seat located inside the splicing frame. The receiving ring is sleeved on the heat-conducting rod. The length of the metal heat-conducting wire is greater than the radius of the receiving ring. The receiving seat is also provided with a receiving groove.

[0012] Preferably, the receiving ring and the receiving seat are connected by a torsion spring.

[0013] Preferably, the receiving seat is further provided with an abutment rod that restricts the receiving ring from rotating in one direction.

[0014] Preferably, the cooling pipe includes a cooling section and a bending section, which are fixedly connected by bolts and flanges.

[0015] Preferably, the acid adsorption tank includes a transverse tank and a longitudinal tank, which intersect each other.

[0016] In summary, this utility model has the following beneficial technical effects:

[0017] The condensation adsorption assembly facilitates heat exchange with the flue gas inside the boiler. The heat-conducting rods increase the heat exchange rate, and the metal heat-conducting wires increase the contact area. During condensation, acidic gases are converted into acidic liquid, which is adsorbed by the heat-conducting wires and collected in the acid adsorption tank. This reduces the acid content of the acidic gases. By replacing the condensation adsorption assembly, the structural strength of the low-temperature section is indirectly improved, thereby extending the overall service life of the boiler. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a partial structural schematic diagram of the present invention.

[0020] Figure 3 This is a partial cross-sectional structural diagram of the present invention. Figure 1 .

[0021] Figure 4 This is a partial cross-sectional structural diagram of the present invention. Figure 2 .

[0022] Figure 5This is an exploded structural diagram of the heat-conducting rod and cooling pipe in this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Shell; 2. Splicing frame; 21. Through hole; 3. Condensation adsorption assembly; 31. Cooling pipe; 32. Cooling section; 33. Bending section; 34. Heat-conducting rod; 35. Metal heat-conducting wire; 36. Acid adsorption tank; 37. Sleeve; 38. Rotary handle; 4. Material receiving assembly; 41. Material receiving seat; 42. Material receiving ring; 43. Material receiving groove; 44. Abutment rod. Detailed Implementation

[0024] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive. Furthermore, the terms "first," "second," "third," and similar expressions are used for descriptive and distinguishing purposes only and should not be construed as indicating or implying the relative importance of the corresponding components.

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail.

[0026] This application discloses a protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler.

[0027] A protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler is provided. The protective plate structure is installed inside the boiler shell 1 and is mainly located in the low-temperature section of the boiler.

[0028] The protective plate structure includes a splicing frame 2, a condensation adsorption component 3, and a receiving component 4; the front and rear ends of the splicing frame 2 are connected to the shell 1, and the splicing frame 2 is mainly used to support the condensation adsorption component 3 and the receiving component 4.

[0029] The condensation adsorption assembly 3 is detachably mounted on the splicing frame 2. The condensation adsorption assembly 3 includes a through hole 21, a cooling pipe 31, and a heat-conducting rod 34. The through hole 21 penetrates the splicing frame 2, allowing the cooling pipe 31 to pass through it. The cooling pipe 31 includes a cooling section 32 and a bent section 33. The cooling section 32 is located inside the splicing frame 2, and the bent section 33 is located outside the splicing frame 2. The bent section 33 is mainly used to connect two adjacent cooling sections 32. The cooling section 32 is used to improve heat exchange with the heat-conducting rod 34. The heat-conducting rod 34 is fitted onto the cooling section 32 of the cooling pipe 31. Acidic gases within the splicing frame 2 are condensed into the heat-conducting rod 34 through condensation. The cooling section 32 and the bent section 33 are fixedly connected by bolts and flanges. When it is necessary to disassemble the heat-conducting rod 34, the bent section 33 can be separated from the cooling section 32 first, facilitating the disassembly of the heat-conducting rod 34.

[0030] The surface of the heat-conducting rod 34 is provided with multiple metal heat-conducting wires 35. The metal heat-conducting wires 35 can increase the contact area with acidic gas, and the metal material can improve the condensation effect. The surface of the heat-conducting rod 34 is also provided with an acid liquid adsorption tank 36. The condensed acidic liquid will flow along the metal heat-conducting wires 35 to the surface of the heat-conducting rod 34. As the liquid increases, it will enter the acid liquid adsorption tank 36. The acid liquid adsorption tank 36 includes transverse tanks and longitudinal tanks. The transverse tanks and longitudinal tanks intersect each other and are interconnected, which facilitates uniform adsorption of acid liquid.

[0031] A sleeve 37 is fixed to the heat-conducting rod 34, and the sleeve 37 is threadedly connected to the through hole 21. This improves the connection between the heat-conducting rod 34 and the splicing frame 2. The threaded section on the sleeve 37 is not shown in the figure. A handle 38 is fixed to the outer side of the sleeve 37 on the splicing frame 2. The handle 38 allows the heat-conducting rod 34 to be easily removed from the splicing frame 2. The length of the metal heat-conducting wire 35 is greater than the radius of the sleeve 37. Increasing the length of the metal heat-conducting wire 35 increases the contact area with air. Because the metal heat-conducting wire 35 has a certain degree of flexibility, it can also exit through the through hole 21.

[0032] The receiving assembly 4 is also detachably mounted on the splicing frame 2. The receiving assembly 4 includes a receiving seat 41 and a receiving ring 42. The bottom of the receiving ring 42 has an extension section, which is connected to the receiving seat 41 via a torsion spring. The receiving seat 41 is detachably mounted on the splicing frame 2 and located below its corresponding sleeve 37. The receiving ring 42 is sleeved on the heat-conducting rod 34. The length of the metal heat-conducting wire 35 is greater than the radius of the receiving ring 42. The receiving seat 41 also has a receiving groove 43.

[0033] The receiving seat 41 is also provided with an abutment rod 44 that restricts the receiving ring 42 from rotating in one direction. The presence of the torsion spring allows the receiving ring 42 to have a tendency to rotate in the direction of the abutment rod 44.

[0034] During installation, first install the receiving assembly 4 onto the splicing frame 2, then install the condensation adsorption assembly 3 onto the splicing frame 2. Specifically, first push the receiving ring 42 so that it is approximately horizontal with the receiving seat 41, then install the receiving seat 41 onto the splicing frame 2. At this time, the receiving ring 42 will enter the splicing frame 2. Under the action of the torsion spring, the receiving ring 42 will return to its original position until it abuts against the abutment rod 44, with the receiving ring 42 approximately horizontal with the receiving seat 41. At this time, the receiving ring 42 is approximately coaxial with the through hole. Then, the cooling pipe 31 and the heat conduction pipe are inserted into the through hole so that the receiving ring 42 can pass through. Finally, the sleeve 37 is connected to the splicing frame 2 to achieve a seal.

[0035] The implementation principle of this embodiment is as follows: When acidic gas flows inside the shell 1, it also flows through the splicing frame 2 and condenses on the heat-conducting pipe. When there is too much acidic liquid on the heat-conducting pipe, it can be disassembled and replaced with a new one. During the replacement process, the metal heat-conducting wire 35 will first contact the receiving ring 42, which will scrape off some of the acidic liquid on the metal heat-conducting wire 35. Only a small amount of acidic liquid will remain on the metal heat-conducting wire 35, so that when the heat-conducting pipe is disassembled, the metal heat-conducting wire 35 will collide with the inner sidewall of the splicing frame 2, and not too much acidic liquid will stick to the inner sidewall of the splicing frame 2. This improves the service life of the splicing frame 2. The acidic liquid will enter the receiving trough 43 through the receiving ring 42 for collection. When a certain amount is collected, the receiving seat 41 can also be disassembled for cleaning and replacement. Ultimately, this reduces the content of acidic gas inside the shell 1, thereby improving the overall service life of the boiler.

[0036] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods without changing the essential spirit of this utility model. Therefore, the above specific embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as a limitation or restriction on the technical solution of this utility model. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler, the protective plate structure being disposed on the boiler shell (1), characterized in that: The protective plate structure includes a splicing frame (2) connected to the shell (1). The splicing frame (2) is detachably provided with a condensation adsorption assembly (3). The condensation adsorption assembly (3) includes a cooling pipe (31) passing through the splicing frame (2) and a heat-conducting rod (34) sleeved on the cooling pipe (31). The surface of the heat-conducting rod (34) is provided with a plurality of metal heat-conducting wires (35). The surface of the heat-conducting rod (34) is also provided with an acid adsorption groove (36).

2. The protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler as described in claim 1, characterized in that: The splicing frame (2) has a through hole (21) through which the cooling pipe (31) and the heat-conducting rod (34) pass. A sleeve (37) is fixed on the heat-conducting rod (34), and the sleeve (37) is threadedly connected to the through hole (21).

3. The protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler as described in claim 2, characterized in that: The sleeve (37) is fixed with a handle (38) on the outer side of the splicing frame (2).

4. The protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler as described in claim 2, characterized in that: The length of the metal heat-conducting wire (35) is greater than the radius of the sleeve (37).

5. The protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler as described in claim 4, characterized in that: The splicing frame (2) is also provided with a receiving component (4). The receiving component (4) includes a receiving seat (41) detachably provided on the splicing frame (2). One end of the receiving seat (41) is located inside the splicing frame (2), and the other end is located outside the splicing frame (2). A receiving ring (42) is provided on the receiving seat (41) located inside the splicing frame (2). The receiving ring (42) is sleeved on the heat-conducting rod (34). The length of the metal heat-conducting wire (35) is greater than the radius of the receiving ring (42). The receiving seat (41) is also provided with a receiving groove (43).

6. The protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler as described in claim 5, characterized in that: The receiving ring (42) and the receiving seat (41) are connected by a torsion spring.

7. The protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler as described in claim 6, characterized in that: The receiving seat (41) is also provided with an abutment rod (44) that restricts the receiving ring (42) from rotating in one direction.

8. The protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler as described in claim 1, characterized in that: The cooling pipe (31) includes a cooling section (32) and a bent section (33), which are fixedly connected by bolts and flanges.

9. The protective plate structure for preventing condensation corrosion in the low-temperature section of a boiler as described in claim 1, characterized in that: The acid adsorption tank (36) includes a transverse tank and a longitudinal tank, which intersect each other.

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