Novel pipe through boiler furnace sealing box

Abstract

The utility model discloses a novel pipeline passes through boiler hearth sealing box, including tightly setting the sealing box of hearth pipe row outside wall, the inside wall of hearth pipe row is provided with the steel sheet, the outside middle part of sealing box is provided with the gas supply pipe of through -going, and the gas supply pipe through -going hearth pipe row extends the wear -resisting steel sheet, the wear -resisting steel sheet covers and seals between the gas supply pipe and hearth pipe row inside, the sealing box inner chamber is densely filled with refractory castable, the refractory castable covers and seals between the gas supply pipe and hearth pipe row outside, prevents the air leakage. The novel pipeline passes through boiler hearth sealing box, through the sealing box and the refractory castable in it can seal between the outside of hearth pipe row and gas supply pipe, through the wear -resisting steel sheet can seal between the inside of hearth pipe row and gas supply pipe, avoid appearing the air leakage condition, through the cooperation of the compacting plate and push -pushing subassembly, can compact the refractory castable in sealing box, avoids the hollowing out and leads to the sealing failure.

Description

Technical Field

[0001] This utility model relates to the field of boiler soot blowing technology, specifically a novel sealing box for pipes passing through the boiler furnace. Background Technology

[0002] Boiler sootblowers are essential equipment in the boiler industry, primarily used to remove ash buildup on boiler heating surfaces, thus improving boiler thermal efficiency and saving energy. Currently, boiler sootblower terminals need to extend into the boiler from various locations, requiring openings in the boiler wall for pipe penetration. However, gaps exist between the sootblower's end openings and the boiler wall, resulting in poor sealing and hot air leakage from the furnace, affecting boiler thermal efficiency and polluting the external environment. Although these gaps are sealed after installation, the problem frequently recurs with long-term boiler operation. Therefore, we have designed a novel pipe-through-boiler-furnace sealing box. Utility Model Content

[0003] The purpose of this utility model is to overcome or at least partially solve the above problems by proposing a novel sealing box for pipes penetrating boiler furnaces.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a novel pipe-through boiler furnace sealing box, comprising a sealing box tightly disposed on the outer wall of the furnace tube bank, the inner wall of the furnace tube bank being provided with a steel plate, a gas supply pipe being disposed through the middle of the outer side of the sealing box, and the gas supply pipe extending through the furnace tube bank to extend out to a wear-resistant steel plate, the wear-resistant steel plate covering and sealing the gas supply pipe and the inner side of the furnace tube bank, the inner cavity of the sealing box being densely filled with refractory castable, the refractory castable covering and sealing the gas supply pipe and the outer side of the furnace tube bank to prevent air leakage.

[0005] In a preferred embodiment, the outer wall of the wear-resistant steel plate is provided with angle steel on all four sides and is connected to the furnace tube bank.

[0006] In a preferred embodiment, the sealing box is made of 5mm thick 12Cr1MoVG heat-resistant steel by welding.

[0007] In a preferred embodiment, the top of the sealed box has an opening.

[0008] In a preferred embodiment, a compaction plate is provided on the side of the sealed box away from the furnace tube bank. The side of the compaction plate is fitted with the inner wall of the sealed box and is sleeved on the gas supply pipe. A pushing assembly is provided on the outer side of the sealed box. The pushing assembly extends into the sealed box and is connected to the compaction plate. Under the action of the pushing assembly, the compaction plate can be pushed to move and further compact the refractory castable.

[0009] In a preferred embodiment, the pushing assembly includes a push plate that is slidably sleeved on an air supply pipe on the outside of the sealing box. At least three push rods are arranged in a circumferential array on the side of the push plate near the sealing box, and one end of each push rod passes through the sealing box and is connected to a compaction plate.

[0010] In a preferred embodiment, the pushing assembly further includes a threaded sleeve that is rotatably disposed on the outside of the push plate, the outer wall of the air supply pipe is provided with a thread that matches the threaded sleeve, and the threaded sleeve is screwed onto the outer wall of the air supply pipe by the thread.

[0011] In a preferred embodiment, the outer circumferential array of the threaded sleeve is provided with at least two handles.

[0012] In a preferred embodiment, the threaded sleeve and the push plate are rotatably connected together by a bearing.

[0013] Compared with the prior art, this utility model provides a novel sealing box for pipes passing through the boiler furnace. The sealing box and the refractory castable inside can seal the outer side of the furnace tube bank and the gas supply pipe. The wear-resistant steel plate can seal the inner side of the furnace tube bank and the gas supply pipe, thus preventing air leakage. The refractory castable inside the sealing box can be compacted by the cooperation of the compaction plate and the pushing component, thus preventing air voids and sealing failure. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the sealing box of this utility model after installation.

[0015] In the diagram: 1. Furnace tube bank; 2. Sealing box; 3. Gas supply pipe; 4. Wear-resistant steel plate; 5. Refractory castable; 6. Opening; 7. Compactor plate; 8. Push plate; 9. Push rod; 10. Threaded sleeve; 11. Handle; 12. Angle steel. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this description, those skilled in the art can make creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0018] This utility model discloses a novel sealing box for pipes penetrating boiler furnaces, which solves the technical problems of the prior art. The overall concept is as follows:

[0019] Example 1:

[0020] Please see Figure 1A novel pipe-through-boiler furnace sealing box includes a sealing box 2 tightly installed on the outer wall of the furnace tube bank 1. A steel plate 4 is installed on the inner wall of the furnace tube bank 1. An air supply pipe 3 is installed through the middle of the outer side of the sealing box 2, and the air supply pipe 3 extends through the furnace tube bank 1 to the wear-resistant steel plate 4. The wear-resistant steel plate 4 covers and seals the air supply pipe 3 and the inner side of the furnace tube bank 1. While ensuring the sealing of the inner side of the furnace tube bank 1, the wear-resistant steel plate 4 is also used to maintain the stability of the air supply pipe 3 and prevent wear on the boiler furnace wall pipes when the soot blower is working. The inner cavity of the sealing box 2 is densely filled with refractory castable 5. Hollow areas should be avoided to prevent sealing failure. The refractory castable 5 covers and seals the air supply pipe 3 and the outer side of the furnace tube bank 1 to prevent air leakage.

[0021] In practice, angle steel 12 is provided around the outer wall of the wear-resistant steel plate 4 and connected to the furnace tube bank 1. This arrangement facilitates the installation and fixing of the wear-resistant steel plate 4 and the furnace tube bank 1.

[0022] In practice, the sealing box 2 is made of 5mm thick 12Cr1MoVG heat-resistant steel by welding.

[0023] In practice, the top of the sealing box 2 is provided with an opening 6 to facilitate the filling of refractory castable 5 into the sealing box 2. A sealing cover can also be installed outside the opening 6. After filling, the sealing cover can be tightly closed and fixed before compaction.

[0024] In specific implementation, a compaction plate 7 is also provided on the side of the sealed box 2 away from the furnace tube bank 1. The side of the compaction plate 7 is attached to the inner wall of the sealed box 2 and is fitted onto the gas supply pipe 3. A pushing component is provided on the outside of the sealed box 2. The pushing component extends into the sealed box 2 and is connected to the compaction plate 7. Under the action of the pushing component, the compaction plate 7 can be pushed to move and further compact the refractory castable 5 to prevent the refractory castable 5 from filling with voids.

[0025] In specific implementation, the pushing assembly includes a push plate 8 that is slidably sleeved on the air supply pipe 3 on the outside of the sealing box 2. At least three push rods 9 are arranged in a circumferential array on the side of the push plate 8 near the sealing box 2. One end of the push rod 9 passes through the sealing box 2 and is connected to the compaction plate 7. When the push plate 8 is moved by the action of external force, the push plate 8 can push the compaction plate 7 through the push rod 9. The compaction plate 7 can compact the refractory castable 5 in the sealing box 2.

[0026] In specific implementation, the pressing assembly also includes a threaded sleeve 10 that is rotatably mounted on the outside of the push plate 8 via a bearing. The outer wall of the air supply pipe 3 is provided with a thread that is compatible with the threaded sleeve 10, and the threaded sleeve 10 is screwed onto the outer wall of the air supply pipe 3. At least two handles 11 are arranged in a circumferential array on the outer wall of the threaded sleeve 10. With this arrangement, when the threaded sleeve 10 is driven to rotate by the handles 11, it can move along the axial direction of the air supply pipe 3 while rotating due to the screw connection with the air supply pipe 3, thereby driving the push plate 8 to move and realizing the compaction action of the compaction plate 7.

[0027] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A novel sealing box for pipes penetrating boiler furnaces, characterized in that: It includes a sealing box (2) tightly set on the outer wall of the furnace tube bank (1), the inner wall of the furnace tube bank (1) is provided with a steel plate (4), a gas supply pipe (3) is provided through the middle of the outer side of the sealing box (2), and the gas supply pipe (3) extends through the furnace tube bank (1) to the wear-resistant steel plate (4). The wear-resistant steel plate (4) covers and seals the gas supply pipe (3) and the inner side of the furnace tube bank (1). The inner cavity of the sealing box (2) is densely filled with refractory castable (5). The refractory castable (5) covers and seals the gas supply pipe (3) and the outer side of the furnace tube bank (1) to prevent air leakage.

2. The novel pipe-through-boiler furnace sealing box according to claim 1, characterized in that: Angle steel (12) is provided around the outer wall of the wear-resistant steel plate (4) and is connected to the furnace tube bank (1).

3. A novel pipe-through-boiler furnace sealing box according to claim 1, characterized in that: The sealing box (2) is made of 5mm thick 12Cr1MoVG heat-resistant steel by welding.

4. A novel pipe-through-boiler furnace sealing box according to claim 1, characterized in that: The top of the sealed box (2) is provided with an opening (6).

5. A novel pipe-through-boiler furnace sealing box according to claim 1, characterized in that: A compaction plate (7) is also provided on the side of the sealed box (2) away from the furnace tube bank (1). The side of the compaction plate (7) is attached to the inner wall of the sealed box (2) and is fitted onto the gas supply pipe (3). A pushing component is provided on the outside of the sealed box (2). The pushing component extends into the sealed box (2) and is connected to the compaction plate (7). Under the action of the pushing component, the compaction plate (7) can be pushed to move and further compact the refractory castable (5).

6. A novel pipe-through-boiler furnace sealing box according to claim 5, characterized in that: The pushing assembly includes a push plate (8) that is slidably sleeved on the air supply pipe (3) on the outside of the sealing box (2). At least three push rods (9) are arranged in a circumferential array on the side of the push plate (8) near the sealing box (2). One end of the push rod (9) passes through the sealing box (2) and is connected to the compaction plate (7).

7. A novel pipe-through-boiler furnace sealing box according to claim 6, characterized in that: The pushing assembly also includes a threaded sleeve (10) that is rotatably disposed on the outside of the push plate (8). The outer wall of the air supply pipe (3) is provided with a thread that is compatible with the threaded sleeve (10), and the threaded sleeve (10) is screwed onto the outer wall of the air supply pipe (3) by the thread.

8. A novel pipe-through-boiler furnace sealing box according to claim 7, characterized in that: The outer wall circumferential array of the threaded sleeve (10) is provided with at least two handles (11).

9. A novel pipe-through-boiler furnace sealing box according to claim 7, characterized in that: The threaded sleeve (10) and the push plate (8) are rotatably connected together by a bearing.

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