Double-layer sight glass connecting pipe structure of a burner

Abstract

The application discloses a double-layer sight glass connecting pipe structure of a burner and relates to the technical field of burner auxiliary equipment. The double-layer sight glass connecting pipe structure comprises a mounting connecting pipe and a sight glass assembly. The mounting connecting pipe is connected with the inside of the burner. The sight glass assembly comprises a sight glass and a sight glass mounting pipe. The sight glass mounting pipe is connected with the mounting connecting pipe. The sight glass is mounted in the sight glass mounting pipe. The sight glass is arranged perpendicularly to the axis of the sight glass mounting pipe. The sight glass is provided with two layers of sight glasses. The two layers of sight glasses are arranged at intervals. The two-layer sight glass structure has high impact resistance. Even if slight deflagration occurs inside, the two layers of sight glasses are not prone to breakage at the same time, the observation process is ensured to be continuous, and the number of shutdown maintenance times is reduced. Meanwhile, a buffer cavity is formed between the two layers of sight glasses, the influence of temperature fluctuation inside the burner on the sight glass is reduced, the glass is prevented from being fogged and scaled, and the observation clarity is ensured.

Description

Technical Field

[0001] This application relates to the technical field of burner auxiliary equipment, and in particular to a burner double-layer sight glass pipe structure. Background Technology

[0002] In order to monitor the internal flame pattern, fuel combustion status and material reaction in real time during the operation of combustion equipment such as burners and incinerators, it is necessary to install a sight glass pipe assembly on the equipment shell to achieve visual observation of the internal working conditions.

[0003] Existing burner sight glass connector assemblies typically use quartz glass fixed to the connector thread, allowing operators to observe the combustion conditions inside the burner through the glass. However, if a slight deflagration occurs inside the burner during operation, the resulting impact can easily cause the glass to break, making it impossible to observe the inside of the burner. This necessitates stopping the machine to replace the glass, affecting production efficiency. Utility Model Content

[0004] This application proposes a double-layer sight glass connector structure for a burner, which can mitigate the impact force of slight deflagration on the glass and prevent the glass from breaking.

[0005] This application provides a burner double-layer sight glass connector structure, which adopts the following technical solution: A burner double-layer sight glass connector structure includes a mounting connector and a sight glass assembly. The mounting connector is connected to the interior of the burner. The sight glass assembly includes a sight glass and a sight glass mounting tube, and the sight glass mounting tube is connected to the mounting connector. The sight glass is installed inside the sight glass mounting tube and is perpendicular to the axis of the sight glass mounting tube. The sight glass has two layers, which are spaced apart and form a buffer cavity between them.

[0006] By adopting the above technical solution, the double-layer sight glass structure has strong impact resistance. Even if a slight internal deflagration occurs, it is not easy for both layers of glass to break simultaneously, ensuring continuous observation and reducing the number of downtime maintenance. At the same time, a buffer cavity is formed between the two layers of sight glass, which can reduce the impact of internal temperature fluctuations of the burner on the sight glass, reduce fogging and scaling of the glass, and ensure clear observation.

[0007] Preferably, the sight glass assembly further includes a mounting flange, which is sleeved on the sight glass mounting tube; there are two sets of mounting flanges, and the two layers of sight glass are respectively clamped and fixed by the two sets of mounting flanges, and the sight glass is clamped and fixed on the sight glass mounting tube by tightening the mounting flanges with fastening bolts.

[0008] By adopting the above technical solution, the sight glass is firmly fixed by using the cooperation of mounting flanges and fastening bolts; two sets of mounting flanges are respectively fitted on the sight glass mounting tube and clamp the two layers of sight glass, and then the locking force of the fastening bolts is used to make the sight glass stably installed in the sight glass mounting tube, so as to avoid the glass displacement caused by vibration or impact during the operation of the burner.

[0009] Preferably, sealing gaskets are provided on the contact surfaces of the two layers of sight glass with the two sets of mounting flanges, as well as on the contact surfaces of the two sets of mounting flanges themselves.

[0010] By adopting the above technical solution, sealing gaskets are set on the contact surfaces of the sight glass and the mounting flange, as well as adjacent mounting flanges. The sealing gaskets can fill the tiny gaps on the contact surfaces through their own deformation. On the one hand, this prevents toxic and harmful fumes inside the burner from leaking out of the gaps, protecting the safety of operators and the environment; on the other hand, it prevents external dust, moisture and other impurities from entering the sight glass assembly and prevents impurities from adhering to the surface of the sight glass and affecting the clarity of observation.

[0011] Preferably, the sealing gasket is made of NAS material by injection molding, and the sealing gasket has a temperature resistance range of -20°C to 250°C.

[0012] By adopting the above technical solutions, NAS materials can adapt to high-temperature environments below 250°C, have a slow aging rate, a long service life, and can reduce the risk of leakage.

[0013] Preferably, it also includes a switching valve, which is located between the installation pipe and the sight glass mounting pipe, and connects the installation pipe and the sight glass mounting pipe in series. The switching valve is used to isolate toxic and harmful flue gas in the burner during maintenance.

[0014] By adopting the above technical solution, by connecting the valve in series between the installation pipe and the sight glass installation pipe, the toxic and harmful flue gas inside the burner can be directly isolated when the valve is closed during maintenance. This prevents maintenance personnel from coming into contact with toxic gases when disassembling or replacing the sight glass, and at the same time avoids the leakage of flue gas into the external environment and causing pollution, thus providing a safety barrier for maintenance operations.

[0015] Preferably, the switching valve is a manual ball valve.

[0016] By adopting the above technical solution and selecting a manual ball valve as the on / off valve, the manual control method is simple to operate and responds quickly, allowing staff to quickly open and close the valve; at the same time, the ball valve itself has good sealing performance, which can reliably block toxic and harmful fumes, further ensuring maintenance safety and pipeline sealing.

[0017] Preferably, the side wall of the mounting pipe is connected to a cooling air pipe, and the end of the cooling air pipe away from the mounting pipe is connected to a nitrogen source. The cooling air pipe is used to introduce nitrogen into the mounting pipe to absorb heat.

[0018] By adopting the above technical solution, nitrogen gas is introduced into the installation pipe through the cooling air pipe. The nitrogen gas can absorb the heat of the installation pipe and the sight glass assembly, cool the entire assembly, and reduce the formation of water vapor on the sight glass.

[0019] In summary, this application includes at least one of the following beneficial technical effects: 1. The double-layer sight glass structure has strong impact resistance. Even if a slight internal deflagration occurs, it is not easy for both layers of glass to break simultaneously, ensuring continuous observation and reducing the number of downtime maintenance. At the same time, a buffer cavity is formed between the two layers of sight glass, which can reduce the impact of internal temperature fluctuations of the burner on the sight glass, reduce glass fogging and scaling, and ensure clear observation. 2. A sealing gasket is installed at the contact surface between the sight glass and the mounting flange, as well as adjacent mounting flanges. The sealing gasket can fill the tiny gaps at the contact surface through its own deformation. On the one hand, it prevents toxic and harmful flue gas inside the burner from leaking out of the gaps, protecting the safety of operators and the environment; on the other hand, it prevents external dust, moisture and other impurities from entering the inside of the sight glass assembly and prevents impurities from adhering to the surface of the sight glass and affecting the clarity of observation. 3. By connecting the valve in series between the installation pipe and the sight glass installation pipe, the toxic and harmful flue gas inside the burner can be directly isolated when the valve is closed during maintenance. This prevents maintenance personnel from coming into contact with toxic gases when disassembling or replacing the sight glass, and also avoids the leakage of flue gas into the external environment, thus providing a safety barrier for maintenance operations. Attached Figure Description

[0020] Figure 1 This is a partial cross-sectional view of an embodiment of this application; Figure 2 yes Figure 1 Enlarged view of section A.

[0021] Reference numerals: 1. Installation pipe; 2. Sight glass assembly; 21. Sight glass; 22. Sight glass mounting pipe; 23. Mounting flange; 3. Switch valve; 4. Cooling air pipe; 5. Buffer chamber; 6. Fastening bolt; 7. Sealing gasket. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail.

[0023] This application discloses a burner double-layer sight glass nozzle structure.

[0024] refer to Figure 1 A double-layer sight glass pipe structure for a burner includes an installation pipe 1, a sight glass assembly 2, a switching valve 3, and a cooling air pipe 4. The installation pipe 1 is connected to the inside of the burner. The sight glass assembly 2 is located at the end of the installation pipe 1 away from the burner for observing the combustion conditions inside the burner. The switching valve 3 is located between the sight glass assembly 2 and the installation pipe 1 for isolating toxic and harmful flue gases inside the burner during maintenance. The cooling air pipe 4 is connected to the side wall of the installation pipe 1, and nitrogen gas is introduced into the installation pipe 1 through the cooling air pipe 4 to absorb heat.

[0025] refer to Figure 1 and Figure 2 The sight glass assembly 2 includes a sight glass 21, a sight glass mounting tube 22, and a mounting flange 23. The sight glass mounting tube 22 is located at the end of the switch valve 3 away from the mounting tube 1. The switch valve 3 is welded to the mounting tube 1 and the sight glass mounting tube 22 to connect them in series. In this embodiment, the switch valve 3 is a manual ball valve. The sight glass 21 is installed inside the sight glass mounting tube 22, and the sight glass 21 is perpendicular to the axis of the sight glass mounting tube 22. The sight glass 21 has two layers, which are spaced apart, forming a buffer cavity 5 between the two sight glass 21. The mounting flange 23 is sleeved on the sight glass mounting tube 22. There are two sets of mounting flanges 23, which respectively clamp the two sight glass 21. The mounting flange 23 has bolt holes, and the mounting flange 23 is locked by fastening bolts 6 through the bolt holes, thereby fixing the sight glass 21 to the sight glass mounting tube 22.

[0026] The double-layer sight glass 21 structure has strong impact resistance. Even if a slight internal deflagration occurs, it is not easy for both layers of glass to break simultaneously, ensuring continuous observation and reducing the number of downtime maintenance. At the same time, a buffer cavity 5 is formed between the two layers of sight glass 21, which can reduce the impact of internal temperature fluctuations of the burner on the sight glass 21, reduce fogging and scaling of the glass, and ensure clear observation.

[0027] Sealing gaskets 7 are provided on the contact surfaces of the two layers of sight glass 21 and the mounting flange 23, as well as on the contact surfaces of the two sets of mounting flanges 23 themselves. The sealing gaskets 7 can fill the tiny gaps in the contact surfaces through their own deformation. On the one hand, this prevents toxic and harmful fumes inside the burner from leaking out of the gaps, protecting the safety of operators and the environment; on the other hand, it prevents external dust, moisture and other impurities from entering the interior of the sight glass assembly 2, and prevents impurities from adhering to the surface of the sight glass 21 and affecting the clarity of observation.

[0028] The sealing gasket 7 is made of NAS material by injection molding. NAS material can adapt to high temperature environments below 250℃ and has excellent properties such as pressure resistance, oil resistance, air tightness and compression resilience.

[0029] The end of the cooling air duct 4 furthest from the installation duct 1 is connected to a nitrogen source. The cooling air duct 4 introduces nitrogen into the installation duct 1. The nitrogen can absorb the heat of the installation duct 1 and the sight glass assembly 2, cool the entire assembly and reduce the formation of water vapor on the sight glass 21.

[0030] The implementation principle of this application embodiment is as follows: the burner double-layer sight glass pipe structure is formed by setting two layers of sight glass 21 arranged at intervals, with a buffer cavity 5 between them; when a slight deflagration occurs inside the burner, the shock wave will be buffered and attenuated in the buffer cavity 5 after passing through the first layer of glass, thereby reducing the impact force on the second layer of glass; this dual protection design ensures that even if one layer of glass breaks, the other layer can still maintain the observation function, effectively extending the service life and reducing the frequency of downtime maintenance.

[0031] Meanwhile, the buffer chamber 5 reduces the impact of internal burner temperature fluctuations on the sight glass 21, reduces fogging and scaling on the glass, and ensures clear observation.

[0032] In addition, the manual ball valve can quickly cut off the flue gas passage during maintenance to ensure operational safety; the cooling air pipe 4 connected to the side wall, after being filled with nitrogen, cools the entire component and reduces the formation of water mist on the sight glass 21.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A burner double-layer sight glass connector structure, characterized in that, The device includes an installation connector (1) and a sight glass assembly (2). The installation connector (1) is connected to the inside of the burner. The sight glass assembly (2) includes a sight glass (21) and a sight glass mounting tube (22). The sight glass mounting tube (22) is connected to the installation connector (1). The sight glass (21) is installed inside the sight glass mounting tube (22). The sight glass (21) is perpendicular to the axis of the sight glass mounting tube (22). The sight glass (21) has two layers, with a gap between the two layers of sight glass (21), forming a buffer cavity (5) between the two layers of sight glass (21).

2. The burner double-layer sight glass nozzle structure according to claim 1, characterized in that, The sight glass assembly (2) also includes a mounting flange (23), which is sleeved on the sight glass mounting tube (22). There are two sets of mounting flanges (23), and the two layers of sight glass (21) are clamped and fixed by the two sets of mounting flanges (23). The sight glass (21) is clamped and fixed on the sight glass mounting tube (22) by tightening the mounting flanges (23) with fastening bolts (6).

3. The burner double-layer sight glass nozzle structure according to claim 2, characterized in that, Sealing gaskets (7) are provided on the contact surfaces of the two layers of sight glass (21) and the two sets of mounting flanges (23), as well as on the contact surfaces of the two sets of mounting flanges (23) themselves.

4. The burner double-layer sight glass nozzle structure according to claim 3, characterized in that, The sealing gasket (7) is made of NAS material by injection molding, and the temperature resistance range of the sealing gasket (7) is -20℃ to 250℃.

5. The burner double-layer sight glass connector structure according to claim 1, characterized in that, It also includes a switch valve (3), which is located between the installation pipe (1) and the sight glass installation pipe (22). The switch valve (3) connects the installation pipe (1) and the sight glass installation pipe (22) in series. The switch valve (3) is used to isolate toxic and harmful flue gas in the burner during maintenance.

6. The burner double-layer sight glass nozzle structure according to claim 5, characterized in that, The switch valve (3) is a manual ball valve.

7. The burner double-layer sight glass nozzle structure according to claim 1, characterized in that, The side wall of the installation pipe (1) is connected to a cooling air pipe (4). The end of the cooling air pipe (4) away from the installation pipe (1) is connected to a nitrogen source. The cooling air pipe (4) is used to introduce nitrogen into the installation pipe (1) to absorb heat.

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