Novel air pre-heater sealing device

Abstract

The utility model discloses a novel air pre-heater sealing device which comprises a connecting pipe, connecting assemblies are symmetrically arranged on the two sides of the connecting pipe, an air conveying pipe is installed on the outer side of one connecting assembly, the air conveying pipe is connected with the connecting assemblies through fixing assemblies, and the fixing assemblies are connected with the air pre-heater. A sealing assembly is arranged at the connecting position of the gas conveying pipe and the connecting assembly and comprises a support installed on the connecting assembly. Through the arrangement of the sealing assembly, after the gas conveying pipe is connected, a worker can install a sealing plate on a support, a sealing cavity is formed through the gas conveying pipe, the support and the sealing plate, then the worker injects sealing liquid into the formed sealing cavity through a liquid inlet, and the connecting position is sealed through the liquid; therefore, smoke leakage in the using process can be avoided, the sealing performance and stability of connection are guaranteed, and sealing liquid can be discharged through the liquid outlet in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of air preheater sealing devices, in particular to a new type of air preheater sealing device. Background Technique

[0002] The gas preheater, also simply referred to as the air preheater, is a preheating device that improves the heat exchange performance of the boiler and reduces heat loss. The function of the gas preheater is to transfer the heat carried in the flue gas discharged from the tail flue of the boiler to the air before entering the boiler through the heat sink, and preheat the air to a certain temperature.

[0003] In the existing air preheater during use, the flue gas pipeline is connected to the air preheater through a flange. During long-term use, the connection between the pipeline and the air preheater is prone to looseness, resulting in flue gas leakage and reducing the sealing performance and stability during use. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a new type of air preheater sealing device.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A new type of air preheater sealing device includes a connecting pipe, and connecting components are symmetrically arranged on both sides of the connecting pipe. An air delivery pipe is installed outside one group of the connecting components, and the air delivery pipe is connected to the connecting component through a fixing component. A sealing component is provided at the connection between the air delivery pipe and the connecting component. The sealing component includes a bracket installed on the connecting component. A sealing plate is arranged on the side of the bracket away from the connecting component. A liquid inlet is installed at the top of the bracket, and a liquid outlet is installed at the bottom of the bracket.

[0007] Preferably, the sealing plate is a split symmetrical mechanism, and the sealing plate is connected to the bracket through installation bolts.

[0008] Preferably, the connecting component includes flange plates symmetrically installed on the connecting pipe, and connecting holes are equidistantly arranged on the flange plates.

[0009] Preferably, the fixing component includes fixing bolts passing through one group of the flange plates and the air delivery pipe, and fixing nuts are rotatably connected to the outside of the fixing bolts.

[0010] Preferably, a sealing gasket is arranged between the sealing plate and the bracket, and the installation bolts pass through the sealing gasket.

[0011] Preferably, sealing gaskets are installed at the connection between the two sealing plates and at the connection between the sealing plate and the air delivery pipe.

[0012] Preferably, grooves are provided at the convex ends of the fixing bolts and the mounting bolts.

[0013] Preferably, threaded holes for connecting the mounting bolts are provided on the bracket.

[0014] The beneficial technical effects are as follows:

[0015] By providing a sealing assembly, after the gas transmission pipe is connected, the staff can install the sealing plate on the bracket. A sealed cavity is formed by the gas transmission pipe, the bracket and the sealing plate. Then, the staff injects sealing liquid into the formed sealed cavity through the liquid inlet, and seals the connection part through the liquid, so as to avoid the leakage of flue gas during use and ensure the sealing performance and stability of the connection. During use, the sealing liquid can be discharged through the liquid drain port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is a schematic structural diagram of a preferred embodiment of a novel air preheater sealing device according to the present invention;

[0017] Figure 2 FIG. 2 is a main sectional view of a preferred embodiment of a novel air preheater sealing device according to the present invention;

[0018] Figure 3 FIG. 3 is a Figure 2 magnified view of part A in a preferred embodiment of a novel air preheater sealing device according to the present invention.

[0019] The reference numerals are explained as follows:

[0020] 1. connecting pipe; 2. connecting assembly; 201. flange; 202. connecting hole; 3. gas transmission pipe; 4. fixing assembly; 401. fixing bolt; 402. fixing nut; 5. sealing assembly; 501. bracket; 502. sealing plate; 503. liquid inlet; 504. liquid drain port; 6. sealing gasket; 7. mounting bolt; 8. groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the technical solutions of the present invention clearer and more definite for those skilled in the art, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. However, the embodiments of the present invention are not limited thereto.

[0022] As Figures 1 - 3As shown in the figure, a new air preheater sealing device provided in this embodiment includes a connecting pipe 1. Connecting components 2 are symmetrically arranged on both sides of the connecting pipe 1. An air delivery pipe 3 is installed outside one set of the connecting components 2. The air delivery pipe 3 is used for delivering flue gas, and the air delivery pipe 3 is connected to the connecting component 2 through a fixing component 4. A sealing component 5 is provided at the connection between the air delivery pipe 3 and the connecting component 2. The sealing component 5 includes a bracket 501 installed on the connecting component 2. The bracket 501 can support a sealing plate 502. A sealing plate 502 is arranged on the side of the bracket 501 away from the connecting component 2. The sealing plate 502 can seal one side of the bracket 501. A liquid inlet 503 is installed at the top of the bracket 501. Sealing liquid enters the sealing cavity through the liquid inlet 503. A liquid outlet 504 is installed at the bottom of the bracket 501. The sealing liquid is discharged from the sealing cavity through the liquid outlet 504.

[0023] As Figures 1 - 2 shown, the sealing plate 502 is a split symmetrical mechanism, and the sealing plate 502 is connected to the bracket 501 through mounting bolts 7, which facilitates fixing the sealing plate 502 on the bracket 501 through the mounting bolts 7.

[0024] As Figures 1 - 3 shown, the connecting component 2 includes flange plates 201 symmetrically installed on the connecting pipe 1, and connection holes 202 are equidistantly arranged on the flange plates 201, which facilitates connecting the connecting pipe 1 to the air preheater through the connecting component 2 and connecting the air delivery pipe 3 to the connecting pipe 1 through the connecting component 2.

[0025] As Figures 1 - 3 shown, the fixing component 4 includes fixing bolts 401 passing through one set of the flange plates 201 and the air delivery pipe 3. A fixing nut 402 is rotatably connected to the outside of the fixing bolts 401, which facilitates the staff to install the air delivery pipe 3 on one set of the flange plates 201 using the fixing bolts 401 and the fixing nuts 402.

[0026] As Figures 1 - 3 shown, a sealing gasket 6 is arranged between the sealing plate 502 and the bracket 501, and the mounting bolts 7 pass through the sealing gasket 6, which can seal the connection between the sealing plate 502 and the bracket 501 through the sealing gasket 6.

[0027] As Figures 1 - 3 shown, sealing gaskets 6 are installed at the connection between the two sealing plates 502 and at the connection between the sealing plate 502 and the air delivery pipe 3, which facilitates sealing between the sealing plates 502 and at the connection between the sealing plate 502 and the air delivery pipe 3 through the sealing gaskets 6.

[0028] As Figures 1 - 3 shown, grooves 8 are provided at the convex ends of the fixing bolts 401 and the mounting bolts 7, which facilitates the staff to use tools to rotate the fixing bolts 401 and the mounting bolts 7 through the grooves 8.

[0029] As Figures 1 - 2 shown, the bracket 501 is provided with threaded holes for connecting the mounting bolts 7, which facilitates the fixing of the mounting bolts 7 on the bracket 501.

[0030] Working principle of this device: When this device is specifically used, the staff uses bolts and nuts to fix the connecting pipe 1 on the air preheater through one set of connecting components 2, and then uses the fixing bolts 401 and fixing nuts 402 to connect the gas transmission pipe 3 with the other set of connecting components 2. After the connection is completed, the sealing plate 502 is spliced on the outside of the gas transmission pipe 3, and the mounting bolts 7 are used to fix the sealing plate 502 on the bracket 501. A sealed cavity is formed by the gas transmission pipe 3, the bracket 501 and the sealing plate 502. Then, the staff injects sealing liquid into the formed sealed cavity through the liquid inlet 503, and seals the connection points through the liquid, so as to avoid the leakage of flue gas during use and ensure the sealing and stability of the connection. During use, the sealing liquid can be discharged through the liquid outlet 504. During use, the sealing gasket 6 seals between the sealing plates 502 and the connection between the sealing plate 502 and the gas transmission pipe 3, and the connection between the sealing plate 502 and the bracket 501 can also be sealed through the sealing gasket 6.

[0031] The above is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes equivalent substitutions or changes, all belong to the protection scope of the present utility model.

Claims

1. A new type of air preheater sealing device, characterized in that: The invention comprises a connecting pipe (1), connecting components (2) are symmetrically arranged on both sides of the connecting pipe (1), an air supply pipe (3) is installed on the outer side of one group of the connecting components (2), and the air supply pipe (3) is connected to the connecting component (2) through a fixing component (4), a sealing component (5) is provided at the connection point between the air supply pipe (3) and the connecting component (2), and the sealing component (5) comprises a bracket (501) installed on the connecting component (2), a sealing plate (502) is provided on the side of the bracket (501) away from the connecting component (2), a liquid inlet (503) is installed at the top end of the bracket (501), and a liquid discharge port (504) is installed at the bottom end of the bracket (501).

2. A novel air preheater sealing device according to claim 1, characterized in that: The sealing plate (502) is a split-type symmetrical structure, and the sealing plate (502) is connected to the bracket (501) via mounting bolts (7).

3. A new type of air preheater sealing device according to claim 2, characterized in that: The connection assembly (2) comprises a flange (201) symmetrically mounted on the connection pipe (1), and the flange (201) is provided with connection holes (202) at equal intervals.

4. A new type of air preheater sealing device according to claim 3, characterized in that: The fixing assembly (4) comprises a fixing bolt (401) penetrating one set of the flanges (201) and the gas delivery pipe (3), and a fixing nut (402) is rotatably connected to the outer side of the fixing bolt (401).

5. The novel air preheater sealing device according to claim 2 is characterized in that: A sealing gasket (6) is provided between the sealing plate (502) and the bracket (501), and the mounting bolt (7) passes through the sealing gasket (6).

6. A new type of air preheater sealing device according to claim 5, characterized in that: The sealing pads (6) are installed at the connection points between the two groups of sealing plates (502) and at the connection points between the sealing plates (502) and the gas delivery pipe (3).

7. A novel air preheater sealing device according to claim 4, characterized in that: The convex ends of the fixing bolt (401) and the mounting bolt (7) are both provided with grooves (8).

8. The novel air preheater sealing device according to claim 2 is characterized in that: The bracket (501) is provided with a threaded hole for connecting the mounting bolt (7).

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