Sealing structure of through-wall pipeline at furnace top of waste heat boiler

Abstract

The utility model relates to the technical field of waste heat boiler top through-wall pipeline sealing, and discloses a waste heat boiler top through-wall pipeline sealing structure which comprises a first sealing plate and a wall plate body, a round hole is formed in the first sealing plate, and a through-wall pipeline is inserted in the round hole. The outer side wall, close to the top end, of the through-wall pipeline is connected with an expansion joint body, a second sealing plate is installed at the bottom end of the first sealing plate, and a wall plate lining plate is installed on one side of the top end of the second sealing plate. In the working process, due to the fact that the hole size of the first sealing plate is larger than the outer diameter of the through-wall pipeline, the first sealing plate does not affect up-down expansion movement of the through-wall pipeline, and due to the fact that the first sealing plate is not fixed to the second sealing plate and the wall plate body, when the through-wall pipeline expands in the circumferential direction, the through-wall pipeline can not expand in the circumferential direction. The first sealing plate can freely expand along with the through-wall pipeline, and therefore the overall pipeline expansion capacity is well improved in the working process.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing of a waste heat boiler furnace top through-wall pipeline, in particular to a sealing structure of a waste heat boiler furnace top through-wall pipeline. Background Art

[0002] There are many through-the-wall pipes on the top of the wall panel of the gas turbine waste heat boiler. These pipes expand up, down, left and right as the boiler is heated during operation. Therefore, holes are opened in the through-the-wall pipe parts of the wall to facilitate the smooth expansion of the through-the-wall pipes. In order to prevent the flue gas from eroding the insulation layer and leaking from the holes in the wall, the openings in the wall need to be sealed. Generally, a sealing plate is added to the inner side of the inner lining plate of the boiler roof, and the inner lining plate is clamped with a card plate for sealing.

[0003] However, in actual operation, since the outer dimensions and installation position of the card plate are difficult to control during the manufacturing and installation process, the card plate often directly blocks the sealing plate, causing the sealing plate to expand poorly and deform, or even damage the pipeline, which is not conducive to the sealing and safe operation of the boiler. Utility Model Content

[0004] The purpose of the utility model is to provide a sealing structure for a waste heat boiler furnace top through-wall pipe, so as to solve the problem proposed in the above background technology that the outer dimensions and installation position of the clamping plate are difficult to control, and the situation where the clamping plate directly jams the sealing plate often occurs, causing the sealing plate to expand poorly and deform, and even damage the pipe, which is not conducive to the sealing and safe operation of the boiler.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing structure for a wall-penetrating pipe on the top of a waste heat boiler furnace, comprising a first sealing plate and a wall panel body, a circular hole is opened inside the first sealing plate, a wall-penetrating pipe is inserted inside the circular hole, an outer wall of the wall-penetrating pipe close to the top is connected to an expansion joint body, a second sealing plate is installed at the bottom end of the first sealing plate, and a wall panel lining plate is installed on one side of the top end of the second sealing plate.

[0006] Preferably, the inner diameter of the circular hole inside the first sealing plate is larger than the outer size of the wall-penetrating pipe, and the size is the diameter size.

[0007] Preferably, the first sealing plate is formed by splicing two or more plates, and the top end of the first sealing plate is insulated and pressed by the wall panel body.

[0008] Preferably, the second sealing plate supports the bottom end of the first sealing plate, and the first sealing plate has its own weight.

[0009] Preferably, the size of the second sealing plate is matched with the size of the wall panel lining plate, and the second sealing plate is fixedly connected to the wall panel lining plate.

[0010] Preferably, the first sealing plate and the wall-penetrating pipe are not fixedly connected, and the first sealing plate and the second sealing plate are not fixedly connected.

[0011] Preferably, a hollow space in the opening is formed between the first sealing plate and the wall panel lining plate, and the hollow space in the opening is covered by the second sealing plate.

[0012] Preferably, the expansion joint body and the wall-penetrating pipe are adapted to each other, and the wall-penetrating pipe penetrates and is inserted into the interior of the wall panel body.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the sealing structure of the waste heat boiler furnace top through-wall pipeline not only improves the expansion capacity of the pipeline, but also improves the sealing effect and structural convenience of the sealing structure;

[0014] (1) During operation, since the opening size of the first sealing plate is larger than the outer diameter of the wall-penetrating pipe, the first sealing plate does not affect the upward and downward expansion movement of the wall-penetrating pipe, and since the first sealing plate is not fixed to the second sealing plate and the wall plate body, when the wall-penetrating pipe expands circumferentially, the first sealing plate can expand freely with the wall-penetrating pipe, thereby improving the overall expansion capacity of the pipe during operation;

[0015] (2) During operation, the first sealing plate is held down by the wall panel body and supported by the second sealing plate. In addition, due to its own gravity, when the through-wall pipe expands and moves in the up-and-down direction, the first sealing plate will not move in the up-and-down direction. When the through-wall pipe moves in the left-and-right and other circumferential directions, the first sealing plate will move with it. However, due to the presence of the second sealing plate, the portion of the first sealing plate left in the opening of the wall panel inner lining plate will be covered by the second sealing plate, thereby preventing smoke from entering the opening of the wall panel body and ensuring the sealing and thermal insulation of the wall panel module.

[0016] (3) During on-site installation, it is only necessary to first place the first sealing plate against the wall panel body to insulate the wall-penetrating pipe, and then fix the second sealing plate to the wall panel inner lining plate according to the specified size. It has the characteristics of simple structure, thus greatly improving the overall installation convenience during the work process. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a partial top view of the structure of the utility model.

[0019] In the figure: 1. first sealing plate; 2. second sealing plate; 3. wall panel lining plate; 4. through-wall pipe; 5. wall panel body; 6. expansion joint body. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-2 The utility model provides an embodiment: a sealing structure for a wall-penetrating pipe on a waste heat boiler furnace top, comprising a first sealing plate 1 and a wall panel body 5. A circular hole is opened inside the first sealing plate 1, a wall-penetrating pipe 4 is inserted inside the circular hole, an outer wall of the wall-penetrating pipe 4 close to the top is connected with an expansion joint body 6, a second sealing plate 2 is installed at the bottom end of the first sealing plate 1, and a wall panel lining plate 3 is installed on one side of the top end of the second sealing plate 2.

[0022] The inner diameter of the circular hole inside the first sealing plate 1 is larger than the outer size of the wall-penetrating pipe 4 , and the size is the diameter size.

[0023] The first sealing plate 1 is formed by splicing two or more plates, and the top of the first sealing plate 1 is insulated and pressed by the wall panel body 5.

[0024] The second sealing plate 2 supports the bottom end of the first sealing plate 1, and the first sealing plate 1 has its own weight.

[0025] The size of the second sealing plate 2 matches the size of the wall panel lining plate 3 , and the second sealing plate 2 is fixedly connected to the wall panel lining plate 3 .

[0026] The first sealing plate 1 and the wall-penetrating pipe 4 are not fixedly connected, and the first sealing plate 1 and the second sealing plate 2 are not fixedly connected.

[0027] A space in the opening is formed between the first sealing plate 1 and the wall panel lining plate 3 , and the space in the opening is covered by the second sealing plate 2 .

[0028] The expansion joint body 6 and the through-wall pipe 4 are adapted to each other, and the through-wall pipe 4 penetrates and is inserted into the interior of the wall panel body 5;

[0029] In order to prevent smoke from entering the wall opening through the circular hole to the greatest extent, the diameter of the circular hole is D1, which is slightly larger than the outer diameter of the wall-penetrating pipe 4, which is D2.

[0030] Furthermore, in order to allow the first sealing plate 1 to move freely with the wall-penetrating pipe 4, the first sealing plate 1, the wall-penetrating pipe 4 and the second sealing plate 2 are not fixed, but the second sealing plate 2 and the wall panel lining plate 3 need to be fixed.

[0031] Working principle: First, the first sealing plate 1 is attached to the wall panel body 5 to insulate the wall-penetrating pipe 4, and then the second sealing plate 2 is fixedly installed with the wall panel lining plate 3 according to the specified size. Since the first sealing plate 1 is not fixed to the second sealing plate 2 and the wall panel body 5, when the wall-penetrating pipe 4 expands circumferentially, the first sealing plate 1 can expand freely with the wall-penetrating pipe 4. When the wall-penetrating pipe 4 expands and moves in the up and down directions, the first sealing plate 1 will not move in the up and down directions. When the wall-penetrating pipe 4 moves circumferentially left and right, the first sealing plate 1 will move with it. However, due to the existence of the second sealing plate 2, the part of the first sealing plate 1 left empty in the opening of the wall panel lining plate 3 will be covered by the second sealing plate 2, thereby preventing smoke from entering the opening position of the wall panel body 5.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A sealing structure for a waste heat boiler furnace top through-wall pipe, comprising a first sealing plate (1) and a wall plate body (5), characterized in that: A circular hole is provided inside the first sealing plate (1), a wall-penetrating pipe (4) is inserted inside the circular hole, an outer wall of the wall-penetrating pipe (4) close to the top is connected to an expansion joint body (6), a second sealing plate (2) is installed at the bottom end of the first sealing plate (1), and a wall panel lining plate (3) is installed on one side of the top end of the second sealing plate (2).

2. The sealing structure of the waste heat boiler furnace top through-wall pipe according to claim 1 is characterized in that: The inner diameter of the circular hole inside the first sealing plate (1) is larger than the outer dimension of the wall-penetrating pipe (4), and the dimension is the diameter.

3. The sealing structure of the waste heat boiler furnace top wall-penetrating pipe according to claim 1 is characterized in that: The first sealing plate (1) is formed by splicing two or more plates, and the top end of the first sealing plate (1) is insulated and pressed by the wall plate body (5).

4. The sealing structure of the waste heat boiler furnace top wall-penetrating pipe according to claim 1 is characterized in that: The second sealing plate (2) supports the bottom end of the first sealing plate (1), and the first sealing plate (1) has its own weight.

5. The sealing structure of the waste heat boiler furnace top wall-penetrating pipe according to claim 1 is characterized in that: The size of the second sealing plate (2) is compatible with the size of the wall panel inner lining plate (3), and the second sealing plate (2) is fixedly connected to the wall panel inner lining plate (3).

6. The sealing structure of the waste heat boiler furnace top wall-penetrating pipe according to claim 1 is characterized in that: The first sealing plate (1) and the wall-penetrating pipe (4) are not fixedly connected, and the first sealing plate (1) and the second sealing plate (2) are not fixedly connected.

7. The sealing structure of the waste heat boiler furnace top wall-penetrating pipe according to claim 1 is characterized in that: An open hole gap is formed between the first sealing plate (1) and the wall panel lining plate (3), and the open hole gap is covered by the second sealing plate (2).

8. The sealing structure of the waste heat boiler furnace top wall-penetrating pipe according to claim 1 is characterized in that: The expansion joint body (6) and the wall-penetrating pipe (4) are adapted to each other, and the wall-penetrating pipe (4) penetrates and is inserted into the interior of the wall panel body (5).

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